Journal articles: 'Static Synchronous Series Compensator (SSSC)'

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Akinuli Abimbola, Anthony, Adewale Akinola Olubunmi, Ibrahim Adebisi Oluseun, Taofiki Akinwale Adio, Akindele Afolabi Segun, and Noma-Osaghae Etinosa. "Hybrid voltage regulation of the Nigerian 330 kV grid using static synchronous compensator and static synchronous series compensator." Engineering review 44, no. 3 (2024): 149–68. https://doi.org/10.30765/er.2613.

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Recently, the control of voltage instability through appropriate power factor correction programmes has become a necessity in power systems due to recurring blackouts and cascading outages that interrupt the smooth supply of electricity to customers. The study examined the combined effect of a Static Synchronous Compensator (STATCOM) and a Static Synchronous Series Compensator (SSSC) for voltage stability enhancement of the Nigerian 330 kV, 28-bus power network. Before compensation, several buses in the network experienced voltage magnitudes below the statutory limit. The application of the combined STATCOM-SSSC system improved the voltage magnitudes at these critical buses, bringing them within acceptable levels. The integration of STATCOM-SSSC also minimized the total active and reactive power losses of the system by 12.51% and 6.65%, respectively, resulting in an annual cost saving of 1.55 billion Naira in power exports. The study demonstrated that the hybrid use of STATCOM and SSSC effectively enhanced the voltage stability of the Nigerian 330 kV power grid. The findings highlight the benefits of implementing advanced reactive power compensation techniques to improve the performance and resilience of the Nigerian power system.

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A. Patel, Nilaykumar, and Dr Praghnesh Bhatt. "SSR mitigation in power system with static synchronous series compensator." International Journal of Engineering & Technology 7, no. 3 (2018): 1457. http://dx.doi.org/10.14419/ijet.v7i3.14443.

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Series compensation in transmission line with fixed series capacitor may cause Subsynchronous Resonance (SSR) at certain compensation level. This paper presents the application of static synchronous series compensator (SSSC) to mitigate impact of SSR. For analysis of SSR, IEEE first benchmark model is used and SSSC is located in transmission line at generator end. The linearized state space equation of SMIB system without and with SSSC has been developed to carry out eigenvalue analysis to identify potential modes for SSR. The AVR and PSS in the generator control loop coordinated with SSSC can successfully mitigate SSR. Time domain simulation is also carried out to confirm the results obtained with eigenvalue analysis.

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Patil, Vinoda, and Prof Nandakumar C. "Voltage Stability Improvement In Multi-bus System Using Static Synchronous Series Compensator." International Journal for Research in Applied Science and Engineering Technology 10, no. 6 (2022): 1052–59. http://dx.doi.org/10.22214/ijraset.2022.43928.

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Abstract: Network stability has become a major worry as the power system has become increasingly complicated as a result of open access electricity market activities and increased demand. Voltage unbalance and collapse have become a global issue for a variety of reasons. FACTS devices are used to manage system stability issues. Use of a static synchronous series compensator (SSSC) to enhance the voltage stability of a power system is investigated in this paper. IEEE 9 bus networks are modelled using MATLAB Simulink software to investigate voltage management and reactive power compensation. For a multibus system, the effectiveness of SSSC on voltage stability is examined. Using a static synchronous series compensator enhances voltage stability. Keywords: SSSC, Faults, voltage improvement

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Sujeeth Kumara, K., J. Sathwikab, B. Sruthic, R. Pravachand, and B. Vijay kumare. "The Impact of Serial Controllable Facts Devices on Voltage Stability." Electrical and Automation Engineering 2, no. 1 (2023): 14–25. http://dx.doi.org/10.46632/eae/2/1/3.

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As the world's population continues to grow, the demand for electricity is also increasing rapidly. Ensuring the quality of power supply, voltage stability, unity power factor, and minimizing power losses is essential for delivering power to every user end. In order to achieve this, compensation techniques are needed. This project focuses on Serial controllable Flexible AC Transmission Systems (FACTS) devices, such as Controllable Series Compensator (CSC) and Static Synchronous Series Compensator (SSSC), which have a significant impact on the voltage and power stability of an electric power system (EPS). The mathematical derivation of the voltage dependency of CSC and SSSC is extracted for the single-load infinitive-bus model (SLIB). New analytical equations are developed to compare the impact of CSC and SSSC on voltage stability in a five-bus system. The results of the analysis are expected to reveal that CSC has a crucial role to play in enhancing voltage stability, and its impact is greater than that of SSSC when considering equal CSC and SSSC MVA ratings. When it comes to voltage controllability, SSSC (Static synchronous series compensator) is superior to CSC (Controllable Series Compensator), especially in situations where there are having low voltages or having low loads.

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Zaidan, Majeed Rashid, and Saber Izadpanah Toos. "Emergency congestion management of power systems by static synchronous series compensator." Indonesian Journal of Electrical Engineering and Computer Science 25, no. 3 (2022): 1258–65. https://doi.org/10.11591/ijeecs.v25.i3.pp1258-1265.

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From a transmission system point of view, any overload on the grid lines during operation in situations such as peak load or emergency conditions include line outage or generator outage, is refers to congestion. Generally, the congestion can be managed by controlling power flow. On the other hand, series compensation has a significant role in control power flow; therefore, series compensation equipment like fixed series capacitor (FSC), thyristor-controlled series capacitor (TCSC), and static synchronous series compensator (SSSC) can be used for congestion management. In this paper, an SSSC is used in a transmission line to manage congestion in emergency conditions, line outage and generator outage. The congestion rent contribution method has been used to determine the location of the SSSC in the IEEE 14-bus test system. This technique finds the transmission line 1-2 (from bus 1 to bus 2) is the best location of the SSSC to reduce congestion. After installing an SSSC in the specified line, simulation results show that the power flow has been controlled, leading to reducing the congestion. In other words, the effectiveness of the SSSC can be seen in reducing the total congestion rent, the total generation cost, and network losses.

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Zaidan, Majeed Rashid, and Saber Izadpanah Toos. "Emergency congestion management of power systems by static synchronous series compensator." Indonesian Journal of Electrical Engineering and Computer Science 25, no. 3 (2022): 1258. http://dx.doi.org/10.11591/ijeecs.v25.i3.pp1258-1265.

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From a transmission system point of view, any overload on the grid lines during operation in situations such as peak load or emergency conditions include line outage or generator outage, is refers to congestion. Generally, the congestion can be managed by controlling power flow. On the other hand, series compensation has a significant role in control power flow; therefore, series compensation equipment like fixed series capacitor (FSC), thyristor-controlled series capacitor (TCSC), and static synchronous series compensator (SSSC) can be used for congestion management. In this paper, an SSSC is used in a transmission line to manage congestion in emergency conditions, line outage and generator outage. The congestion rent contribution method has been used to determine the location of the SSSC in the IEEE 14-bus test system. This technique finds the transmission line 1-2 (from bus 1 to bus 2) is the best location of the SSSC to reduce congestion. After installing an SSSC in the specified line, simulation results show that the power flow has been controlled, leading to reducing the congestion. In other words, the effectiveness of the SSSC can be seen in reducing the total congestion rent, the total generation cost, and network losses.

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AROCKIARAJ, SONASALAM, BAIRAVAN VEERAYAN MANIKANDAN, and ANANTHAN BHUVANESH. "FUZZY LOGIC CONTROLLED STATCOM WITH A SERIES COMPENSATED TRANSMISSION LINE ANALYSIS." REVUE ROUMAINE DES SCIENCES TECHNIQUES — SÉRIE ÉLECTROTECHNIQUE ET ÉNERGÉTIQUE 68, no. 3 (2023): 307–12. http://dx.doi.org/10.59277/rrst-ee.2023.3.10.

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The integration of wind farms with transmission networks exhibits several problems. The sub-synchronous resonance (SSR) plays a vital role in those issues, and it must be reduced. Two effective flexible ac transmission system (FACTS) based voltage control devices, namely static synchronous series compensator (SSSC) and static compensator (STATCOM) are proposed in this paper to mitigate the SSR. Detailed eigenvalue analysis was conducted to prove the successful mitigation of SSR by two controllers in a series of compensated wind farms. To find the dominant control scheme, the eigenvalues of the proposed controllers are compared with PSCAD/EMTDC simulations. Finally, a comparison study is carried out between the two proposed SSR controllers.Further, the fuzzy logic control based on STATCOM and SSSC is also developed to enhance the stability margin of the wind turbine. The results have been validated with the IEEE 1st SSR benchmark system. From the results, it is proven that Fuzzy Logic Controller (FLC) based SSSC exhibits better performance than STATCOM.

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Muhammad, Ali. "Enhancement of Dynamic Performance of Transmission Line using Static Synchronous Series Compensator." International Journal of Engineering Works (IJEW) 6, no. 05 (2019): 164–71. https://doi.org/10.5281/zenodo.2665681.

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Static synchronous series compensator (SSSC) belongs to the facts family. It controls the flow of power in transmission line. The SSSC is a voltage source inverter connected in series with the transmission line and injects the voltage in quadrature with line current. Demand of power is growing day after day. Installation of new transmission lines is difficult because of environmental factors. The power flow capacity of existing transmission line has to be increased which is done by using compensation devices. The main reason behind poor performance of transmission system is the power flow capacity of existing transmission line under dynamic situations subjected to disturbances. FACTS technology opens new opportunities for controlling power and increases the usable capacity. It enhances corresponding power to flow through such lines under normal and contingency conditions. Recently new advancement in FACTS technology has introduced devices for reactive power compensation.  In this paper, a case study is discussed and test system is simulated in MATLAB/Simulink under normal conditions and also under fault conditions to improve the transient stability of the system. A 132kv transmission line coming from Kohat grid station to tall grid station has been selected as a test system which is suspected to overloaded conditions due to which voltage stability could not be maintained especially during the months of June, July and August. Static synchronous series compensator (SSSC) is installed near the Kohat bus. The results of current, voltage, active power and reactive power have been analysed with and without SSSC in the test system. Results shown that the stability of power system, voltage profile and power flow capability enhances by using SSSC. Also by using SSSC the oscillations were damped very quickly as compared to the circuit without using SSSC and the stability is maintained.

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Salim, Nur Ashida, Nur Diyana Shahirah Mohd Zain, Hasmaini Mohamad, Zuhaila Mat Yasin, and Nur Fadilah Ab Aziz. "Multi-machine transient stability by using static synchronous series compensator." International Journal of Power Electronics and Drive Systems (IJPEDS) 11, no. 3 (2020): 1249. http://dx.doi.org/10.11591/ijpeds.v11.i3.pp1249-1258.

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Transient stability in power system is vital to be addressed due to large disturbances that could damage the system such as load changes and voltage increases. This paper presents a multi-machine transient stability using the Static Synchronous Series Compensator (SSSC). SSSC is a device that is connected in series with the power transmission line and produces controllable voltage which contribute to a better performance in the power system stability. As a result, this research has observed a comparison of the synchronization of a three-phase system during single-phase faults before and after installing the SSSC device. In addition, this research investigates the ability of three different types of controllers i.e. Proportional Integral (PI), Proportional Integral Derivation (PID), and Generic controllers to be added to the SSSC improve the transient stability as it cannot operate by itself. This is because the improvement is too small and not able to achieve the desired output. The task presented is to improve the synchronization of the system and time taken for the voltage to stabilize due to the fault. The simulation result shows that the SSSC with an additional controller can improve the stability of a multi-machine power system in a single phase fault.

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Nur, Ashida Salim, Diyana Shahirah Mohd Zain Nur, Mohamad Hasmaini, Mat Yasin Zuhaila, and Fadilah Ab Aziz Nur. "Multi-machine transient stability by using static synchronous series compensator." International Journal of Power Electronics and Drive System (IJPEDS) 11, no. 3 (2020): 1249–58. https://doi.org/10.11591/ijpeds.v11.i3.pp1249-1258.

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Transient stability in power system is vital to be addressed due to large disturbances that could damage the system such as load changes and voltage increases. This paper presents a multi-machine transient stability using the Static Synchronous Series Compensator (SSSC). SSSC is a device that is connected in series with the power transmission line and produces controllable voltage which contribute to a better performance in the power system stability. As a result, this research has observed a comparison of the synchronization of a three-phase system during single-phase faults before and after installing the SSSC device. In addition, this research investigates the ability of three different types of controllers i.e. Proportional Integral (PI), Proportional Integral Derivation (PID), and Generic controllers to be added to the SSSC improve the transient stability as it cannot operate by itself. This is because the improvement is too small and not able to achieve the desired output. The task presented is to improve the synchronization of the system and time taken for the voltage to stabilize due to the fault. The simulation result shows that the SSSC with an additional controller can improve the stability of a multi-machine power system in a single phase fault.

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Masenkane, Mahlomola, and Rudiren Pillay Carpanen. "Damping Subsynchronous Resonance Using a Static Synchronous Series Compensator Based Supplementary Damping Controller." International Journal of Engineering Research in Africa 42 (April 2019): 122–38. http://dx.doi.org/10.4028/www.scientific.net/jera.42.122.

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This paper investigates the effectiveness of a supplementary damping controller around a Static Synchronous Series Compensator (SSSC) in mitigating the torsional oscillations due to interaction of series compensated transmission line with the nearby turbine-generator shafts. The main objective of the controller is to suppress the unstable torsional oscillations with frequencies coinciding with the turbine-generator shaft torsional modes, through modulation of the reactance provided by the SSSC. Detailed simulation studies are done in Power System Computer Aided Design (PSCAD) using a single machine infinite bus (SMIB) power system adopted from the IEEE first benchmark model (FBM) for subsynchronous resonance analysis. The results show that this supplementary damping controller can provide positive damping to the unstable torsional oscillations due to presence of conventional series capacitors in the line or an SSSC or a combination of both the SSSC and conventional series capacitor banks.

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Liu, Qing, Yan Yan Chang, and Yan Xu. "Fault Position Identification for Series Compensated Lines with SSSC Based on Improved Wavelet Packet Entropy." Advanced Materials Research 383-390 (November 2011): 5200–5205. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.5200.

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In this paper, the correction factor is introduced to improve the wavelet packet entropy, which is used to analyze the transient fault current of the series compensated line with Static Synchronous Series Compensator (SSSC). The results show that the wavelet packet entropy when the fault point is before SSSC is much larger than that when the fault point is after SSSC. According to this characteristic, the scheme of identifying fault position for series compensated lines with SSSC is put forward. Cooperated this scheme with the distance protection, the measured impedance of distance protection is adjusted adaptively so that the over-reaching and under-reaching of the distance protection due to SSSC can be eliminated effectively.

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Geetanjali, Babarao Raut, and A. Jawadekar U. "Power system Stability Improvement using Static Synchronous Series Compensator (SSSC)." Advancement of Signal Processing and its Applications 4, no. 1 (2021): 1–8. https://doi.org/10.5281/zenodo.4744450.

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Day by day the demand of electric power system is increased and due to this continuous demand in electric power system network is becoming more complex and heavily loaded and leading to voltage instability. This paper presents the enhancement of voltage stability as well as damping power system oscillation in transient mode. In this study FACTS device (SSSC) static synchronous series compensator is used to investigate the effect of this device in controlling active and reactive power as well as damping power system oscillations. The SSSC is equipped with a source of energy in DC link, which can supply or absorb the active and reactive power to or from the line. PI controller is used to tune the circuit. For the simulation reason, the model of multi-machine power system with or without SSSC controller is established in MATLAB/SIMULINK using Sim Power System (SPS) block set.

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Sen, K. K. "SSSC-static synchronous series compensator: theory, modeling, and application." IEEE Transactions on Power Delivery 13, no. 1 (1998): 241–46. http://dx.doi.org/10.1109/61.660884.

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Vijay, Prashant Yadaraju, and Kumar M. Siva. "Performance evaluation of power system with HVDC integration: Impact of SSSC and STATCOM on power system efficiency and stability." i-manager's Journal on Power Systems Engineering 12, no. 1 (2024): 29. http://dx.doi.org/10.26634/jps.12.1.21168.

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This paper presents a comprehensive performance analysis of power systems incorporating High Voltage Direct Current (HVDC) transmission lines, with a focus on the impact of integrating advanced Flexible AC Transmission Systems (FACTS) devices, namely Static Synchronous Series Compensator (SSSC) and Static Synchronous Compensator (STATCOM). This study evaluates key performance parameters, including Total Power Loss (TPL), Voltage deviation (Vdev), transmission efficiency, and corona loss, across three configurations, HVDC alone, HVDC with SSSC, and HVDC with STATCOM. Through simulations conducted using MATLAB or Simulink, the results demonstrate that the addition of SSSC and STATCOM significantly improves system performance by reducing power losses, enhancing voltage stability, and optimizing transmission efficiency. The analysis reveals that HVDC systems with SSSC outperform other configurations in terms of power loss reduction and voltage stability, while STATCOM improves voltage regulation and minimizes deviations. This study highlights the benefits of incorporating SSSC and STATCOM into HVDC systems for enhancing power system efficiency, stability, and operational reliability.

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Thirumalaivasan, R., M. Janaki, and Nagesh Prabhu. "Investigation of SSR Characteristics of Hybrid Series Compensated Power System with SSSC." Advances in Power Electronics 2011 (May 22, 2011): 1–8. http://dx.doi.org/10.1155/2011/621818.

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The advent of series FACTS controllers, thyristor controlled series capacitor (TCSC) and static synchronous Series Compensator (SSSC) has made it possible not only for the fast control of power flow in a transmission line, but also for the mitigation of subsynchronous resonance (SSR) in the presence of fixed series capacitors. SSSC is an emerging controller and this paper presents SSR characteristics of a series compensated system with SSSC. The study system is adapted from IEEE first benchmark model (FBM). The active series compensation is provided by a three-level twenty four-pulse SSSC. The modeling and control details of a three level voltage source converter-(VSC)-based SSSC are discussed. The SSR characteristics of the combined system with constant reactive voltage control mode in SSSC has been investigated. It is shown that the constant reactive voltage control of SSSC has the effect of reducing the electrical resonance frequency, which detunes the SSR. The analysis of SSR with SSSC is carried out based on frequency domain method, eigenvalue analysis and transient simulation. While the eigenvalue and damping torque analysis are based on linearizing the D-Q model of SSSC, the transient simulation considers both D-Q and detailed three phase nonlinear system model using switching functions.

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Et. al., G. Srikanth ,. "Multi Machine Power System Stability Enhancement Using Static Sychronous Series Compensator (SSSC)." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 2 (2021): 1611–18. http://dx.doi.org/10.17762/turcomat.v12i2.1444.

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These days, the requirement for flexible and quick power stream control in the transmission framework is foreseen to increment later on taking into account utility liberation and power wheeling prerequisite. Diminishing the compelling reactance of lines by series remuneration is an immediate approach to build transmission ability. Nonetheless, power move capacity of long transmission lines is restricted by dependability contemplations. On account of the power electronic exchanging abilities as far as control and fast, more focal points have been done in FACTS gadgets regions and presence of these gadgets in transient security during transient flaws bringing about progress in power framework solidness. In this examination, a static synchronous series compensator (SSSC) is utilized to research the impact of this gadget in controlling active and reactive powers just as damping power framework motions in transient mode. The Proportional-Integral Controller (PI) controller is utilized to tune the circuit and to give the zero sign blunder. Static Synchronous Series Compensator (SSSC) is series reactive power remuneration to a power framework. The yield of a SSSC is series infused voltage, which leads or slacks line current by 90°, in this manner copying a controllable inductive or capacitive reactance. SSSC can be utilized to lessen the line impedance and upgrade the active power move ability of the line. With the boundaries and control, the SSSC is discovered successful to direct load voltage during abrupt difference in the heaps. The SSSC additionally furnishes stable activity with dynamic enlistment engine load and mitigates the insecure and swaying conduct that is coming about during the activity of remunerated Alternator with dynamic engine load.

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Adhikari, Manav. "THE COMPARATIVE STUDY OF STATCOM WITH FC-TCR AND SSSC." International Journal of Engineering Technologies and Management Research 2, no. 3 (2020): 1–8. http://dx.doi.org/10.29121/ijetmr.v2.i3.2015.475.

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The Flexible Alternating Current Transmission Systems (FACTS) device deals with the control of power flow, alternating current of transmission line and immediately respond towards the stability problems of the system. The present paper show that how the FACTS devices enhance the different parameter of the power systems like power transfer capacity of line, system stability etc. In MATLAB a simplified transmission system is modeled and the resultant power (PQ) and voltage profiles are studied as an uncompensated system. Now the same transmission system is simulating with FACTS device i.e. Static Synchronous Series Compensator (SSSC), Fixed Capacitor Thyristor Controlled Reactor (FC-TCR) and Static Synchronous Compensator (STATCOM). The result obtained after simulation provide the power and voltage profiles, are analyzed as a compensated system. Finally we found that a compensated system have better voltage profile and power flow w.r.t. an uncompensated system.

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Majeed, Rashid Zaidan *1 Dr. Ali Mohammed Kathim Al-zohuari2 Saif Tahseen Hussain3 Ghanim Thiab Hasan4 Saber Izadpanah Toos5. "A COMPREHENSIVE STUDY ON VOLTAGE STABILITY MARGIN IMPROVEMENT IN POWER SYSTEM." Global Journal of Engineering Science and Research Management 8, no. 5 (2021): 1–15. https://doi.org/10.5281/zenodo.4764469.

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In a power system, the excessive voltage drop in the buses due to increasing power demand leads to voltage instability consequent voltage collapse. Hence the voltage stability is a critical concern in a power system. In this paper, the application of tap-changing transformer, shunt capacitor, Static Var Compensator (SVC), Static Synchronous Compensator (STATCOM), Thyristor-Controlled Series Capacitor (TCSC), and Static Synchronous Series Compensator (SSSC) for improving voltage stability margin is studied. The Continuation Power Flow (CPF) method has been applied to the IEEE 14-bus test system to determine the Maximum Loading Point (MLP) and demonstrate the effectiveness of these devices on improving voltage stability margin. Simulation results show that these devices can increase the load ability margin of power systems and, as a result, causes voltage stability improvement. Although the performance of shunt compensation devices includes SVC, STATCOM, and shunt capacitor are better than other devices.

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Vijay, Prashant Yadaraju, and Kumar M. Siva. "Performance analysis of power system dynamics with facts controllers: Optimal placement and impact of SSSC and STATCOM." i-manager’s Journal on Electrical Engineering 17, no. 4 (2024): 11. http://dx.doi.org/10.26634/jee.17.4.21138.

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This paper explores the impact of integrating Flexible AC Transmission Systems (FACTS) controllers, specifically the Static Synchronous Series Compensator (SSSC) and the Static Synchronous Compensator (STATCOM), on power system performance. The objective of this study is to evaluate how these controllers can enhance various aspects of power system operation, including voltage regulation, power flow stability, and overall system efficiency. The methodology involves simulating power systems with and without the deployment of SSSC and STATCOM and analyzing their effects on voltage profiles, power flow characteristics, and system losses. The findings reveal that both SSSC and STATCOM significantly improve voltage stability and power flow control, leading to reduced system losses and enhanced operational efficiency. This study introduces a novel approach by comparing the performance enhancements provided by SSSC and STATCOM in different operational scenarios, offering valuable insights into their effectiveness. The results underscore the potential of FACTS technology in advancing power system stability and efficiency, making a substantial contribution to the field of power system optimization.

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Noor Hidayat, Mohammad, Syarifatul Izza, and Ratna Ika Putri. "Analisis Pengaruh Static Synchronous Series Compensator Terhadap Kestabilan Transien Menggunakan Metode Nyquist (Analysis of the Static Synchronous Series Compensator’s Effect on Transient Stability Using the Nyquist Method)." Jurnal Nasional Teknik Elektro dan Teknologi Informasi 9, no. 1 (2020): 79–86. http://dx.doi.org/10.22146/jnteti.v9i1.140.

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Loss of synchronization causes a generator not in steady state condition, causing system instability. In this paper, Nyquist method is used to determine the transient stability of a synchronous generator using the Nyquist curve. The system is unstable if the G(jω) curve is further away from the point -1 + j0, while the gain margin value is below 6 dB and the phase margin has a value below 30°. The response of the system shows that the rotor angle oscillation on the generator is not synchronous, while the power angle experiences irregular transients so that the power angle increases until it cannot return to its steady state position. By using the Static Series Synchronous Compensator (SSSC) filter, the rotor angle oscillation response after 0.1 seconds begins to stabilize at an angle of 50°. The effect of the SSSC filter also affects the bus voltage oscillations from 0.15 seconds to 0.05 seconds and the real power oscillations from 0.13 seconds to 0.06 seconds.

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Brahmachary, Rupali, and Dipu Sarkar. "Small Signal Stability Assessment in Presence of SSSC for a Power System Under Fault Disturbance." International Journal of Smart Grid and Sustainable Energy Technologies 4, no. 1 (2021): 136–39. http://dx.doi.org/10.36040/ijsgset.v4i1.3900.

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The use of FACTS controllers in power grids has resulted in the improvement of stability issues related to the power systems. When the FACTS controllers are used to damp out the power systems oscillation, there series controller inverter like static synchronous series compensator (SSSC) device are the most suitable to resolve the issue. In this paper, importance is given on the optimal operation of the SSSC and to the maintenance of the small signal stability of the system. Here the main focus is to check the system response to stability after the use of SSSC device.

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Dhoble, Prashant. "Active Reactive Power Flow Control Using Static Synchronous Series Compensator (SSSC)." IOSR Journal of Electrical and Electronics Engineering 7, no. 6 (2013): 59–71. http://dx.doi.org/10.9790/1676-0765971.

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Polajžer, B., A. Trupej, and P. Xenos. "Analysis of the Impact of a Modular SSSC on the Operation of Transmission Line Protection Relays using a Hardware-In-the-Loop Configuration." Renewable Energy and Power Quality Journal 20 (September 2022): 629–34. http://dx.doi.org/10.24084/repqj20.386.

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This paper evaluates the impact of a modular Static Synchronous Series Compensator (m-SSSC) on the operation of communication-assisted line distance and differential protection relays. The m-SSSC system incorporates an over-current protection feature to trigger the bypass mode of operation during grid faults. A case study is analyzed for a 220 kV transmission line and an m-SSSC with a reactive power rating of 80 MVAr per phase using a Hardware-In-the-Loop configuration. The obtained results show the impact of the m-SSSC system on the distance protection operation during some cases of high resistive faults. The differential protection operation was not affected by the mSSSC.

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Dutta, Susanta, Provas Kumar Roy, and Debashis Nandi. "Optimal Allocation of Static Synchronous Series Compensator Controllers using Chemical Reaction Optimization for Reactive Power Dispatch." International Journal of Energy Optimization and Engineering 5, no. 3 (2016): 43–62. http://dx.doi.org/10.4018/ijeoe.2016070103.

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Static synchronous series compensator (SSSC) is one of the most effective flexible AC transmission systems (FACTS) devices used for enhancing power system security. In this paper, optimal location and sizing of SSSC are investigated for solving the optimal reactive power dispatch (ORPD) problem in order to minimize the active power loss in the transmission networks. A new and efficient chemical reaction optimization (CRO) is proposed to find the feasible optimal solution of the SSSC based optimal reactive power dispatch (ORPD) problem. The proposed approach is carried out on the standard IEEE 30 bus and IEEE 57 bus test systems. The optimization results obtained by the proposed CRO are analyzed and compared with the same obtained from genetic algorithm (GA), teaching learning based optimization (TLBO), quasi-oppositional TLBO (QOTLBO) and strength pareto evolutionary algorithm (SPEA). The results demonstrate the capabilities of the proposed approach to generate true and well-distributed optimal solutions.

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Mbae, Mutegi, and Nnamdi Nwulu. "Impact of hybrid FACTS devices on the stability of the Kenyan power system." International Journal of Electrical and Computer Engineering (IJECE) 12, no. 1 (2022): 12. http://dx.doi.org/10.11591/ijece.v12i1.pp12-21.

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Flexible alternating current transmission system (FACTS) devices are deployed for improving power system’s stability either singly or as a combination. This research investigates hybrid FACTS devices and studies their impact on voltage, small-signal and transient stability simultaneously under various system disturbances. The simulations were done using five FACTS devices-static var compensator (SVC), static synchronous compensator (STATCOM), static synchronous series compensators (SSSC), thyristor controlled series compensator (TCSC) and unified power flow controller (UPFC) in MATLAB’s power system analysis toolbox (PSAT). These five devices were grouped into ten pairs and tested on Kenya’s transmission network under specific contingencies: the loss of a major generating machine and/or transmission line. The UPFC-STATCOM pair performed the best in all the three aspects under study. The settling times were 3 seconds and 3.05 seconds respectively for voltage and rotor angle improvement on the loss of a major generator at normal operation. The same pair gave settling times of 2.11 seconds and 3.12 seconds for voltage and rotor angle stability improvement respectively on the loss of a major transmission line at 140% system loading. From the study, two novel techniques were developed: A performance-based ranking system and classification for FACTS devices.

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Mutegi, Mbae, and Nwulu Nnamdi. "Impact of hybrid FACTS devices on the stability of the Kenyan power system." International Journal of Electrical and Computer Engineering (IJECE) 12, no. 1 (2022): 12–21. https://doi.org/10.11591/ijece.v12i1.pp12-21.

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, Flexible alternating current transmission system (FACTS) devices are deployed for improving power system’s stability either singly or as a combination. This research investigates hybrid FACTS devices and studies their impact on voltage, small-signal and transient stability simultaneously under various system disturbances. The simulations were done using five FACTS devices-static var compensator (SVC), static synchronous compensator (STATCOM), static synchronous series compensators (SSSC), thyristor controlled series compensator (TCSC) and unified power flow controller (UPFC) in MATLAB’s power system analysis toolbox (PSAT). These five devices were grouped into ten pairs and tested on Kenya’s transmission network under specific contingencies: the loss of a major generating machine and/or transmission line. The UPFC-STATCOM pair performed the best in all the three aspects under study. The settling times were 3 seconds and 3.05 seconds respectively for voltage and rotor angle improvement on the loss of a major generator at normal operation. The same pair gave settling times of 2.11 seconds and 3.12 seconds for voltage and rotor angle stability improvement respectively on the loss of a major transmission line at 140% system loading. From the study, two novel techniques were developed: A performance-based ranking system and classification for FACTS devices.

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Rao, H. V. Gururaja, Nagesh Prabhu, and R. C. Mala. "Emulated reactance and resistance by a SSSC incorporating energy storage device." International Journal of Electrical and Computer Engineering (IJECE) 9, no. 2 (2019): 840. http://dx.doi.org/10.11591/ijece.v9i2.pp840-850.

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Static Synchronous series compensator without energy storage device can exchange only reactive power with the network and can operate in limited operating range in two quadrants only. When energy storage device is connected at the DC bus of SSSC (SSSC – ES), it can also exchange real power with the network. Operating range of SSSC will be much broader and it covers all the four quadrants. However, emulated reactance and resistance by SSSC – ES is likely to affect the performance of a distance protection system. This paper presents a detailed model of an SMIB system with SSSC – ES. Injected voltage by SSSC – ES in all the four quadrants of operation is presented. Impact of operation of SSSC _ ES in different quadrants and various control strategies for SSSC – ES on impedance emulated by SSSC – ES during steady state condition and transient system disturbance is discussed.

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Rao, H. V. Gururaja, Nagesh Prabhu, and R. C. Mala. "Emulated reactance and resistance by a SSSC incorporating energy storage device." International Journal of Electrical and Computer Engineering (IJECE) 9, no. 2 (2019): 840–50. https://doi.org/10.11591/ijece.v9i2.pp840-850.

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Static Synchronous series compensator without energy storage device can exchange only reactive power with the network and can operate in limited operating range in two quadrants only. When energy storage device is connected at the DC bus of SSSC (SSSC – ES), it can also exchange real power with the network. Operating range of SSSC will be much broader and it covers all the four quadrants. However, emulated reactance and resistance by SSSC – ES is likely to affect the performance of a distance protection system. This paper presents a detailed model of an SMIB system with SSSC – ES. Injected voltage by SSSC – ES in all the four quadrants of operation is presented. Impact of operation of SSSC – ES in different quadrants and various control strategies for SSSC – ES on impedance emulated by SSSC – ES during steady state condition and transient system disturbance is discussed.

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Jebaraj, Luke, Charles Christober Asir Rajan, and Kumar Sriram. "Application of Firefly Algorithm in Voltage Stability Environment Incorporating Circuit Element Model of SSSC with Variable Susceptance Model of SVC." Advances in Electrical Engineering 2014 (April 24, 2014): 1–11. http://dx.doi.org/10.1155/2014/349787.

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This paper proposes an application of firefly algorithm (FA) based extended voltage stability margin and minimization of active (or) real power loss incorporating Series-Shunt flexible AC transmission system (FACTS) controller named as static synchronous series compensator (SSSC) combined with static var compensator (SVC). A circuit model of SSSC and variable susceptance model of SVC are utilized to control the line power flows and bus voltage magnitudes, respectively, for real power loss minimization and voltage stability limit improvement. The line quality proximity index (LQP) is used to assess the voltage stability of a power system. The values of voltage profile improvement, real power loss minimization, and the location and size of FACTS devices were optimized by FA. The results are obtained from the IEEE 14- and 30-bus test case systems under different operating conditions and compared with other leading evolutionary techniques such as shuffled frog leaping algorithm (SFLA), differential evolution (DE) and particle swarm optimization (PSO).

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Ginart, Antonio E. "Modular Transformerless Static Synchronous Series Compensator with Self-Balancing for Ultra High Current Using a Paralleling Scheme." Energies 15, no. 13 (2022): 4666. http://dx.doi.org/10.3390/en15134666.

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A novel modular Transformerless, Self-balanced, Static Synchronous Series Compensator (TSB-SSSC) capable of delivering ultra-high current, with the objective of dynamically balancing the impedance of the transmission power grid, is proposed. Balancing transmission lines is crucial in power optimization and delivery because it increases the power transfer capability without building new power lines. The transformerless SSSC needs to support and control the line current from a few hundred to several thousand amperes. This paper presents how the ultra-high current architecture of the TSB-SSSC is achieved by operating multiple converters with self-balancing capabilities in parallel. The mechanism of self-balancing is based on the intrinsic physics of the capacitor and is enabled by a passive network of capacitor equalizers that keep the capacitor voltage equal during switching disconnection. The second self-balancing system consists of an inductive component that balances possible differences among delay switching caused by the aging of the multiple IGBTs from the different converters that form the SSSC. This work presents the analytical set of equations that describes the system and a complete set of simulations where the effectiveness of self-balancing paralleling topology is shown.

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V. Aleem, Ummeaiman, CH Malla reddy, Spruha S. Pitre, and Samarpita S. Bakshi. "Static Synchronous Series Compensator (SSSC) as Stability Booster of a Power System." International Journal of Engineering Trends and Technology 46, no. 6 (2017): 316–19. http://dx.doi.org/10.14445/22315381/ijett-v46p255.

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Fawzy, Ibram Y., Mahmoud A. Mossa, Ahmed M. Elsawy, and Ahmed A. Zaki Diab. "Enhancing the Performance of Power System under Abnormal Conditions Using Three Different FACTS Devices." International Journal of Robotics and Control Systems 4, no. 1 (2024): 1–32. http://dx.doi.org/10.31763/ijrcs.v4i1.1229.

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In this paper, a comparison between Flexible Alternating Current Transmission System (FACTS) devices including Static Synchronous Compensator (STATCOM), Static Synchronous Series Compensator (SSSC) and Unified Power Flow Controller (UPFC) for providing a better adaptation to changing operating conditions and improving the usage of current systems. The power system using FACTS devices is presented under different conditions such as single phase fault and three phase fault. A digital simulation using Matlab/Simulink software package is carried out to demonstrate the better performance including the voltage and the current of the presented system using FACTS that located between buses B1 and B2 under different faults types. The results obtained investigate that the presented system gives better response with FACTS as compared to not using them under abnormal conditions besides, the UPFC gives better performance of power system under several faults as compared to STATCOM or SSSC as It can absorb reactive power in a manner which significantly reduced the fault current. It is demonstrated that UPFC can reduce the peak fault current at bus B1 ‎to 63.85% of its value without ‎using FACTS devices under line to ground fault and 79.18% under three line to ‎ground fault whereas STATCOM and SSSC reduce it ‎to (75.21, 94.35%) and (75.40, 94.68%), respectively.

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Asper, Hussam, Faisal Shabaan, Tarek Kherbek, and Nabil Mohammed. "Enhancing Loadability of Transmission Lines Using Static Synchronous Series Compensator Devices: A Case Study of the Syrian Network." Energies 17, no. 2 (2024): 390. http://dx.doi.org/10.3390/en17020390.

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In response to global energy demand, the enhancement of transport capacity in electrical transmission lines is deemed essential. The conventional method of constructing new lines is considered costly, time-consuming, and subject to constraints imposed by economic and environmental factors. Among various emerging solutions aimed at enhancing the passive capacity of transmission lines, the technology of flexible AC transmission systems (FACTS) has been demonstrated to be highly effective. This paper proposes the utilization of the static synchronous series compensator (SSSC), a closed-loop control system and a type of FACTS, to alleviate the overloading of transmission lines in the Syrian electrical network. To achieve this objective, the network is first modeled to identify the overloaded transmission lines. Subsequently, the particle swarm optimization (PSO) algorithm is employed for the optimal sizing and allocation of SSSCs within the network. The findings showcase the significant reduction in loads on critically overloaded transmission lines subsequent to the successful implementation of SSSC devices. This serves to validate the improvements made to the existing infrastructure of the Syrian electrical network’s transmission lines, without necessitating the construction of new transmission lines.

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Khavari, Amir Hesam, Zulkurnain Abdul-Malek, and Chin Leong Wooi. "Assessment of Series Compensator for Ferroresonance Damping in Power System." Applied Mechanics and Materials 818 (January 2016): 101–5. http://dx.doi.org/10.4028/www.scientific.net/amm.818.101.

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Nowadays power quality is a critical issue in power system. Moreover the connection of three-phase transformers through underground cables is growing fast in residential, commercial, industrial and rural applications. Due to this increasing situation, the possibilities of having a series connected capacitance and a non-linear inductance, and hence ferroresonance, become more probable. Ferroresonance can also occur in power transformers or reactors by capacitive coupling from neighbouring phases or lines. It is necessary to have a general idea about what would be the best preventive decisions to take in order to avoid unexpected surprises. It is necessary to have an accurate ferroresonance model so that a device that can smoothen the sharp effects of ferroresonance can be found. In this paper, the FACTS device, namely the static synchronous series compensator (SSSC) had been used to mitigate ferroresonance. Results show that using SSSC dramatically decreases and mitigates the ferroresonance shock as well as the instabilities of the network.

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Abdul-Malek, Zulkurnain, Amir Hesam Khavari, Mehdi Moradi, and Chin Leong Wooi. "Assessment of Series Compensator for Ferroresonance Damping in Power System." Applied Mechanics and Materials 818 (January 2016): 74–78. http://dx.doi.org/10.4028/www.scientific.net/amm.818.74.

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Nowadays power quality is a critical issue in power system. Moreover the connection of three-phase transformers through underground cables is growing fast in residential, commercial, industrial and rural applications. Due to this increasing situation, the possibilities of having a series connected capacitance and a non-linear inductance, and hence ferroresonance, become more probable. Ferroresonance can also occur in power transformers or reactors by capacitive coupling from neighbouring phases or lines. It is necessary to have a general idea about what would be the best preventive decisions to take in order to avoid unexpected surprises. It is necessary to have an accurate ferroresonance model so that a device that can smoothen the sharp effects of ferroresonance can be found. In this paper, the FACTS device, namely the static synchronous series compensator (SSSC) had been used to mitigate ferroresonance. Results show that using SSSC dramatically decreases and mitigates the ferroresonance shock as well as the instabilities of the network.

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Sharma, Ojaswani. "Power System Oscillation Damping and Stability Enhancement using Static Synchronous Series Compensator (SSSC)." International Journal for Research in Applied Science and Engineering Technology 8, no. 7 (2020): 1818–28. http://dx.doi.org/10.22214/ijraset.2020.30659.

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Uriondo, Felipe, F. Javier Chivite-Zabalza, Pedro Izurza, et al. "Design of a protection scheme for an SSSC system (static synchronous series compensator)." IET Conference Proceedings 2025, no. 5 (2025): 171–76. https://doi.org/10.1049/icp.2025.1065.

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Benayad, Khadidja, Tarik Zabaiou, and Amar Bouafassa. "Optimal fractional SSSC auxiliary controller for power system low frequency oscillations damping improvement." Bulletin of Electrical Engineering and Informatics 12, no. 5 (2023): 2543–52. http://dx.doi.org/10.11591/eei.v12i5.4952.

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This work presents a new controller design to improve inter-area low frequency electromechanical oscillations (LFEOs) damping and enhance the overall stability of the electrical network. The control strategy used the static synchronous series compensator (SSSC) based flexible AC transmission systems (FACTS) series-type device mainly performed for power flow and voltage regulation. Then, a fractional order proportional integral derivative (FOPID) is introduced as an auxiliary controller for the SSSC using the difference of rotor speed deviations of generators as input signal to improve the oscillations damping. Moreover, genetic algorithm (GA) is applied to seek for optimum controller gains. The proposed control approach is examined on two-area four-machine (2A4M) test system. The FOPID performance is compared with the integer order proportional integral derivative (PID). Obtained results show that the proposed SSSC-based FOPID controller achieves high performance for enhancement of inter-area low frequency oscillations damping.

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Asmaa, sobhy sabik, Saeed Osman EL, and Ebrahim El sayed Mohamed. "Improvement Congestion Management in Deregulated Power System Considering Voltage Stability and Loss Minimization." International Journal of Engineering and Advanced Technology (IJEAT) 9, no. 5 (2020): 263–69. https://doi.org/10.35940/ijeat.E9467.069520.

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First of the practical defiance's in unsystematized electrical networks is Congestion management. Two manners of percussions used in Congestion management are frill manners and cost free manners. In this paper work congestion is released by using cost free manners seeing (Flexible AC Transmission Systems) FACTS controller like SVC (Static Var compensator), STATCOM, TCSC (Thyristor controlled series Compensator), and SSSC (Static Synchronous Series Compensators) devices. Manifold-objective functions are presumed for congestion management. Small signal stability, voltage profile, and Real power loss reduction are considered objective functions in this paper. The optimal placement of FACTS controller are institute by using sensitivity founded Eigen value analysis and Continuation Power Flow (CPF). The suggested algorithm has used to define optimal placement of FACTS controller and deciphering optimal power flow (OPF) to advance voltage profile and minimize the real power losses within real and reactive power generation margin. The recital analysis has been implemented for IEEE 39 bus test system using MATLAB/PSAT (toolbox) software. Results display the suggested technique has a competency to advance the “Voltage profile, small signal stability, Loss minimization”.

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JOAIB, A. SHAMALIK, and Y. D. SHAHAKAR PROF. "MULTIMACHINE POWER SYSTEM STABILITY ENHANCEMENT BY USING STATIC SYNCHRONOUS SERIES COMPENSATOR (SSSC) WITH PI CONTROLLER." INTERNATIONAL JOURNAL OF INNOVATIONS IN ENGINEERING RESEARCH AND TECHNOLOGY [IJIERT] 4, no. 12 (2018): 6–10. https://doi.org/10.5281/zenodo.1135414.

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In recent years power electronics devices has seen many advances, due to this advancement in FACTS devices have increased. Now a days FACTs devices are more efficient and more widely used. Facts devices connected in power system offers many advantages which can solve problems of power system control. FACTs devices can help in improving problems like voltage regulation, transfer capacity enhancement and better power flow control. The main purpose of implementing FACTS devices is to increase transmission line capacity of transmission line.

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Kadir, Nasrun, and Muhammad Ruswandi Djalal. "Desain Optimal PID-SSSC Menggunakan Particle Swarm Optimization pada Single Machine Infinite Bus." MEDIA ELEKTRIKA 17, no. 2 (2025): 106. https://doi.org/10.26714/me.v17i2.15284.

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Variasi beban menyebabkan osilasi pada generator, mempengaruhi frekuensi dan sudut rotor. Untuk meningkatkan kestabilan generator, terutama pada saat terjadi perubahan beban, diperlukan peralatan kendali tambahan. Static Synchronous Series Compensator (SSSC) adalah perangkat elektronika daya flexible ac transmission systems (FACTS) devices yang dapat digunakan untuk meningkatkan stabilitas dan pengendalian sistem tenaga. Kontrol Proportional Integral Derivative (PID) adalah metode kontrol konvensional yang tangguh dan sederhana yang saat ini masih banyak digunakan dalam kontrol proses. Untuk mendapatkan kinerja PID-SSSC yang optimal, diperlukan koordinasi yang tepat. Pada penelitian ini diusulkan suatu metode optimasi berbasis kecerdasan buatan yang dikenal dengan metode Particle Swarm Optimization (PSO). Efektifitas PID-SSSC pada penelitian ini diuji pada sistem Single Machine Infinite Bus (SMIB). Hasil analisis menunjukkan implementasi PID-SSSC berbasis PSO memberikan hasil yang optimal untuk menunjang kinerja SMIB khususnya saat terjadi perubahan beban. Hasil optimasi menunjukkan fitness function 0.01117. Proses komputasi PSO dalam melakukan optimasi parameter PID-SSSC konvergen pada iterasi ke 24. Kontribusi PID-SSSC mampu memberikan kestabilan yang optimal pada sistem SMIB sehingga osilasi overshoot yang terjadi dapat diredam saat terjadi variasi perubahan beban.

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Raju, D. Koteswara, Bhimrao S. Umre, A. S. Junghare, and B. Chitti Babu. "Improved Control Strategy for Subsynchronous Resonance Mitigation with Fractional-order PI Controller." International Journal of Emerging Electric Power Systems 17, no. 6 (2016): 683–92. http://dx.doi.org/10.1515/ijeeps-2016-0037.

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Abstract This paper explores a robust Fractional-order PI (FOPI) controller to diminish Subsynchronous Resonance (SSR) using Static Synchronous series compensator (SSSC). The diminution of SSR is accomplished by increasing the network damping with the injection of voltage of subsynchronous component into the line at those frequencies which are proximate to the torsional mode frequency of the turbine-generator shaft. The voltage of subsynchronous frequency component is extracted from the transmission line and further the similar quantity of series voltage is injected by SSSC into the line to make the current of subsynchronous frequency component to zero which is the major source of oscillations in the turbine-generator shaft. The insertion and fine tuning of Fractional-order PI controller in the control scheme of SSSC the subsynchronous oscillations are reduced to 4 % as compared to conventional PI controller. The studied system is modelled and simulated using MATLAB-Simulink and the results are analysed to show the precision and robustness of the proposed control strategy.

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Bhande, Sapana Arun, and Vinod Kumar Chandrakar. "Enhancement of Power System Security by the Intelligent Control of a Static Synchronous Series Compensator." Engineering, Technology & Applied Science Research 13, no. 5 (2023): 11953–58. http://dx.doi.org/10.48084/etasr.6150.

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Improving and maintaining the stability of a power system is a major focus of modern technology and research. However, due to financial issues, environmental concerns, and health risks associated with electric and magnetic fields, the growth of the current transmission system is constrained. Transmission line problems can be resolved by the effective use of reactive power compensation based on Flexible AC Transmission (FACT) devices. The effectiveness of these devices in regulating active and reactive powers as well as dampening oscillations in the transient phase of the power system is examined using a Static Synchronous Series Compensator (SSSC) with Artificial Neural Network (ANN) control. When compared to the traditional Proportional Integral (PI) controller, the suggested ANN controller offers better dynamic performance. For the suggested test system, this study utilized modeling and simulation using the MATLAB/Simulink software. The observations show that by using ANN in disturbed situations, power oscillations are quickly damped and power flow is enhanced.

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Mehedi, Ibrahim M., Jahin Al Hasan Joy, Md Rafiqul Islam, et al. "Reducing Fault Current by Using FACTS Devices to Improve Electrical Power Flow." Mathematical Problems in Engineering 2021 (September 17, 2021): 1–9. http://dx.doi.org/10.1155/2021/8116816.

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Today, there is a large increase in the demand for electricity. The transmission and distribution networks, however, cannot fulfill unbound demands due to the scarcity of resources. Power lines have losses which make the situation more unfavorable for maximum power transfer. Implementing a flexible AC transmission system (FACTS) is one of the best ways to reduce line losses. This paper proposes a FACTS-based method for minimizing the fault current in the system. Switchgear and protection equipment also perform better when this is done. Moreover, due to the reduced fault current of the switched system, a larger amount of power can be transmitted. Static synchronous series compensator (SSSC), static synchronous compensator (STATCOM), and unified power flow controller (UPFC) are evaluated in this case. With STATCOM and UPFC, fault currents are significantly reduced. Furthermore, STATCOM and UPFC can also reduce the fault currents in the power system in addition to voltage regulation and power flow control. A MATLAB/Simulink model is used to evaluate the model’s feasibility.

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N., Manju Priya, Latha Mercy E., Bharath Kumar M., and S. Ebenezer Ronald. "Renewable Energy Combined Unified Power Flow Control in Transmission Line." Journal of Recent Trends in Electrical Power System 3, no. 2 (2020): 1–9. https://doi.org/10.5281/zenodo.3978406.

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This paper presents a particular inter harmonic control method of using photovoltaic sun powered homestead inverter as Photovoltaic Unified Power Flow Controller (PV-UPFC), for improving stable force move restricts and remunerating the reactive power of the interconnected transmission system. A typical inverter is utilized for both sun based yield DC-AC transformation and UPFC consecutive Voltage Source Converter (VSC) process.By the use of UPFC both real and reactive power can be controlled and voltage profile is maintained. Selective inter harmonic compensation is introduced to improve performance of the line. The approach is based on the Park transform typically adopted for Statcom control. The improvement is obtained by selective interharmonic filter. The Unified Power Flow Controller is a combination of STATCOM (Static Synchronous Compensator) and SSSC (Static Synchronous Series Compensator). It is generally represented by two back to back voltage source converter (VSC) connected through DC capacitor link. A STATCOM is a voltage source converter (VSC) based device, which having voltage source behind a reactor. The voltage source is made from a DC capacitor and thus a STATCOM has little or no active power capability. It is a shunt controlling device. The SSSC is a series controlling FACTS device that is used to control real power flow and improve power oscillation damping on the power grid. It injects voltage in series with the transmission line where it is connected. The proposed system having the advantage that rather than using separate inverters for solar DC-AC conversion and UPFC converter operation, a standard inverter is employed. This can be achieved through connecting the solar farm DC output terminal across the UPFC DC capacitor link there by reducing the number of inverter required. This tends to increase the stable power transfer limits and enhance the transient stability in the power transmission system.

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Zhang, X. P., C. F. Xue, and K. R. Godfrey. "Modelling of the static synchronous series compensator (SSSC) in three-phase Newton power flow." IEE Proceedings - Generation, Transmission and Distribution 151, no. 4 (2004): 486. http://dx.doi.org/10.1049/ip-gtd:20040473.

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B Sharadvithi, K Sreelatha, arnam Amaresh, and C H V Ganesh. "DESIGN AND DEVELOPMENT OF UNIFIED POWER FLOW CONTROLLER USING STATCOM AND VAR COMPENSATORS." Journal of Nonlinear Analysis and Optimization 14, no. 02 (2023): 757–63. https://doi.org/10.36893/jnao.2023.v14i2.121.

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Using MATLAB/SIMULINK, this paper indicates the theory and operation of flexible alternatingcurrent transmission system (facts) devices, namely the unified power flow controller. Two voltage source converters can be connected back to back through a common DC link capacitor in this paper's UPFC. At the point of connection, the VSC-1, referred to as STATCOM, injects a reactive current into the system. The VSC-2 also called the SSSC, injects voltage into the system in series. The unified power flow controller (UPFC) facilitates real-time control of power flow in transmission lines by adjusting line parameters such as node voltages, phase angle, and line impedance, which cover all other FACTS adjustable parameters. Static synchronous compensator (STATCOM), Static VAR Compensator (SVC), phase shifters, and thyristors are all becoming more common as technology develops.

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Kaouk, Hassan, and Panos Xenos. "Modular SSSC for the future power system in the SEERC region." European Energy and Climate Journal 10, no. 4 (2021): 135–37. http://dx.doi.org/10.4337/eecj.2021.04.09.

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Recently, the world has seen disruptive innovation and change regarding the ways that energy is produced and consumed. The power industry is facing systemic challenges in planning and operation of the whole system. Particularly, high penetration levels of Renewable Energy Sources (RES) bring additional design considerations due to their variable nature and their limitations on reactive power or fault level contribution.Modular Static Synchronous Series Compensator (M-SSSC) technology enables dynamic power flow control and real-time congestion management. Its benefits have been proven in several regional deployments stretching globally from the US to Europe. Given the forecast RES uptake and the geographical intricacies of the Southeast European Regional Council (SEERC) region, the M-SSSC technology can support the grid development and operational strategies in both the short-term and the long-term.

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Nagaraju, M., V. V. K. Reddy, and M. Sushama. "Wavelet based performance analysis of AC transmission systems with unified power flow controller under power quality issues." International Journal of Applied Power Engineering (IJAPE) 8, no. 3 (2019): 299. http://dx.doi.org/10.11591/ijape.v8.i3.pp299-308.

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The developments in power quality are fast and difficult to predict. The majority of power quality issues experienced by industrial customers can be attributed to momentary interruptions, voltage sags or swells, transients, harmonic distortion, electrical noise, and flickering lights, among others. A new device may be invented tomorrow solving power quality problems. The FACTS devices could provide fast control of active and reactive power through a transmission line. The unified power-flow controller (UPFC) is a member of the FACTS family with very attractive features. This device can independently control many parameters, so it is the combination of the properties of a static synchronous compensator (STATCOM) and static synchronous series compensator (SSSC).The performance of AC Transmission system with Unified power flow controller under various power quality problems analysis described. The proposed system is formulated and research work is done by wavelet multi resolution analysis using Bior1.5 mother wavelet with MATLAB/SIMULINK software. It is observed that the effectiveness of AC power transmission through Unified power flow controller under power quality problems of sag, swell, transient, temporary faults and capacitive switching.

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Journal articles on the topic 'Static Synchronous Series Compensator (SSSC)'

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