Journal articles: 'Power Oscillation Damping Controller(PODC)'

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He, Ping, Seyed Arefifar, Congshan Li, Fushuan Wen, Yuqi Ji, and Yukun Tao. "Enhancing Oscillation Damping in an Interconnected Power System with Integrated Wind Farms Using Unified Power Flow Controller." Energies 12, no. 2 (2019): 322. http://dx.doi.org/10.3390/en12020322.

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The well-developed unified power flow controller (UPFC) has demonstrated its capability in providing voltage support and improving power system stability. The objective of this paper is to demonstrate the capability of the UPFC in mitigating oscillations in a wind farm integrated power system by employing eigenvalue analysis and dynamic time-domain simulation approaches. For this purpose, a power oscillation damping controller (PODC) of the UPFC is designed for damping oscillations caused by disturbances in a given interconnected power system, including the change in tie-line power, the changes of wind power outputs, and others. Simulations are carried out for two sample power systems, i.e., a four-machine system and an eight-machine system, for demonstration. Numerous eigenvalue analysis and dynamic time-domain simulation results confirm that the UPFC equipped with the designed PODC can effectively suppress oscillations of power systems under various disturbance scenarios.

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Rajesh, Kumar*1 Dinesh Sharma2 3Amarjit Karla. "THREE PHASE FAULT TRANSIENT CONTROL USING SSSC BASED DAMPING CONTROLLER." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 7 (2017): 899–907. https://doi.org/10.5281/zenodo.834604.

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The main aim of this paper is to control power oscillation which is major concern related to power system operation. In this research work is on SSSC-based power oscillation damping controller, which can damp the power oscillations occurring due to the any change in the transmission line like sudden change in load of line, occurrence of fault, transmission line switching and short circuit. In this work Simulation model of the two machine infinite bus system using SSSC & power oscillation damping controller has been done in MATLAB/SIMULIINK and power system toolbox is used for simulation purpose. These simulation models have been setup into MATLAB based Power System Toolbox (PST) for their transient stability analysis. It is observed that with the proper change of phase of the injection of voltages through SSSC, capacitive & inductive compensation can be provided by which increased and decreased in the active power respectively of transmission line can be done according to the mentioned power demand, but when only the SSSC is used in the line the settling time and amplitude of power oscillations are more as compared when SSSC is used with power oscillation damping controller. When in two machine infinite bus systems 3-phase fault analysis is done then it is observed that that the clearance time is less when the system is provided with SSSC and power oscillation damping controller together.

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Castoldi, Marcelo Favoretto, Sérgio Carlos Mazucato Júnior, Danilo Sipoli Sanches, Carolina Ribeiro Rodrigues, and Rodrigo Andrade Ramos. "Automatic Tuning of PSSs and PODs Using a Parallel Differential Evolution Algorithm." International Journal of Natural Computing Research 4, no. 1 (2014): 1–16. http://dx.doi.org/10.4018/ijncr.2014010101.

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Since Electric Power Systems are constantly subjected by perturbations, it is necessary to insert controllers for damping electromechanical oscillations originally from these perturbations. The Power System Stabilizer (PSS) and Power Oscillation Damper (POD) are two of the most common damping controllers used by the industry. However, just the inclusion of these controllers does not guarantee a satisfactory damping of the system, being necessary a good tune of them. This paper proposes a method for simultaneously tuning different kind of controllers considering several operation conditions at once. A differential evolution technique is used to perform the automatic tuning method proposed, with the great advantage of the parallel computing, since modern computers have more than one core. Simulation results with the benchmark test system New England/New York show the satisfactory performance of the parallel algorithm in a short running time than its non-parallel structure.

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U, M. Netravati, and M. Rajeev P. "POWER OSCILLATION DAMPING CONTROLLER BY STATCOM." COMPUSOFT: An International Journal of Advanced Computer Technology 05, no. 07 (2016): 2183–86. https://doi.org/10.5281/zenodo.14799189.

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This paper describes an approach to design a damping controller of a energy storage type STATCOM (ESTATCOM). The energy storage type STATCOM is an advanced flexible AC transmission system (FACTS) device, which controls both active and reactive power injection/absorption to the power system. It also provides a better power swing damping. Using a linearized block diagram proposed by the author, the present study examines the design of the E-STATCOM damping controller. Several case studies have been performed to evaluate the power swing damping effect of the ESTATCOM a machine infinite bus system. The results of the study show that an E-STATCOM, which control both reactive and active power injection/absorption to power system, has a more significant effect on power swing damping than that controlling the reactive power alone. 

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Narasimha Rao, D., and V. Saritha. "Power System Oscillation Damping Using New Facts Device." International Journal of Electrical and Computer Engineering (IJECE) 5, no. 2 (2015): 198. http://dx.doi.org/10.11591/ijece.v5i2.pp198-204.

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This paper presents about improving stability of the system which can be possible with new FACTS device with more convenient. FACTS devices come under the influence of power electronics equipment. Distributed Power Flow Controller is a FACTS device used for damping low frequency oscillation with new controlling approach. It is valid for a wide range of the operating condition. In this work explain the basic model and its steady state operation, mathematical analysis injection of current control model of the DPFC. Using damping controller used in DPFC facts device as input to implement the task of power oscillation damping .Here this work had a brief study on damping, terminal voltage and excitation voltage at different load conditions, simulation results demonstrate damping low frequency oscillation at nominal, light and heavy loading conditions

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Cai, Guowei, Xiangsong Chen, Zhenglong Sun, Deyou Yang, Cheng Liu, and Haobo Li. "A Coordinated Dual-Channel Wide Area Damping Control Strategy for a Doubly-Fed Induction Generator Used for Suppressing Inter-Area Oscillation." Applied Sciences 9, no. 11 (2019): 2353. http://dx.doi.org/10.3390/app9112353.

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Using a doubly-fed induction generator (DFIG), with an additional active or reactive damping controller, is a new method of suppressing the inter-area oscillation of a power system. However, using active power modulation (APM) may decrease the damping of the shaft oscillation mode of a DFIG and the system damping target cannot be achieved through reactive power modulation (RPM) in some cases. Either single APM or RPM does not consider system damping and torsional damping simultaneously. In this paper, an active-reactive coordinated dual-channel power modulation (DCPM) damping controller is proposed for DFIGs. First, considering the electromechanical parts and control structure of the wind turbine, an electromechanical transient model and an additional damping controller model of DFIGs are established. Then, the dynamic objective function for coordinating the parameters of the additional damping controller is proposed. The ratio between the active power channel and reactive power channel modulation is derived from the parameters optimized by the particle swarm optimization algorithm. Finally, the effectiveness and practicability of the designed strategy is verified by comparing it with a traditional, simple damping controller design strategy. Standard simulation system examples are used in the comparison. Results show that the DCPM is better at maximizing the damping control capability of the rotor-side controller of a DFIG and simultaneously minimizing adverse effects on torsional damping than the traditional strategy.

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Anarkooli, M. Yousefi, and H. Afrakhteh. "Improvement Model Damping Low Frequency Oscillations Presence UPFC by Cuckoo Optimization Algorithm." Indonesian Journal of Electrical Engineering and Computer Science 3, no. 1 (2016): 67. http://dx.doi.org/10.11591/ijeecs.v3.i1.pp67-79.

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Low frequency oscillation (LFO) is a negative phenomenon repeated for the power system increases the risk of instability. In recent years, power systems stabilizer (PSS) for damping low frequency oscillations is used. With FACTS devices such as integrated power flow controller (UPFC) can control power flow and transient stability increase. So, UPFC low frequency oscillation damping can be used instead of PSS. UPFC through direct control voltage and low frequency oscillation damping can be improved. In this study, a single linear model of synchronous machine connected to an infinite bus Heffron-Philips in the presence of UPFC to improve low frequency oscillation damping is used. The selection of the output feedback parameters for the UPFC controllers is converted to an optimization problem which is solved by cuckoo optimization algorithm (COA). COA, as a new evolutionary optimization algorithm, is used in multiple applications. This optimization algorithm has a strong ability to find the most optimistic results for dynamic stability improvement. The controller UPFC and damping in MATLAB software environment is designed and simulated. The simulation was performed for a variety of loads and for various loads and more effective UPFC controller electromechanical oscillation damping compared to other algorithm types is shown.

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Niamul Islam, Naz, M. A. Hannan, Hussain Shareef, Azah Mohamed, and M. A. Salam. "Comparative Study of Popular Objective Functions for Damping Power System Oscillations in Multimachine System." Scientific World Journal 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/549094.

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Power oscillation damping controller is designed in linearized model with heuristic optimization techniques. Selection of the objective function is very crucial for damping controller design by optimization algorithms. In this research, comparative analysis has been carried out to evaluate the effectiveness of popular objective functions used in power system oscillation damping. Two-stage lead-lag damping controller by means of power system stabilizers is optimized using differential search algorithm for different objective functions. Linearized model simulations are performed to compare the dominant mode’s performance and then the nonlinear model is continued to evaluate the damping performance over power system oscillations. All the simulations are conducted in two-area four-machine power system to bring a detailed analysis. Investigated results proved that multiobjective D-shaped function is an effective objective function in terms of moving unstable and lightly damped electromechanical modes into stable region. Thus, D-shape function ultimately improves overall system damping and concurrently enhances power system reliability.

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Somsai, Kittaya, Nakarin Sripanya, and Chaiyut Sumpavakup. "Power oscillation damping control using PI-neuron network controller for distributed generator grid connection with MVDC." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 4 (2022): 2541. http://dx.doi.org/10.11591/ijpeds.v13.i4.pp2541-2554.

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Distributed generator (DG) connection to the system with the DC grid called medium voltage direct current (MVDC) grid connection has received attention and gradually integrated into the distribution grid. The linear controller, such as the PI controller, usually uses the MVDC grid control for power oscillation damping. The PI controller is limited and does not show satisfactory results when the load and parameters of the system itself are changed. This paper proposes the PI with neuron network (NN) as a feed-forward controller (PINNF) to improve the control of the DG grid connection with the MVDC. The proposed PINNF controller is applied to control the power oscillation damping. Since the NN can estimate the proper feed-forward control signals in each situation to the control system, the proposed PINNF controller performs better than the conventional PI controller. The effectiveness of the proposed PINNF controller is validated using nonlinear dynamic simulations on the MATLAB/Simulink program. Four case tests are presented and discussed in this paper. Results indicate the improvement of power oscillation damping stability and performance in the MVDC grid connection with the proposed PINNF controller.

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Kittaya, Somsai, Sripanya Nakarin, and Sumpavakup Chaiyut. "Power oscillation damping control using PI-neuron network controller for distributed generator grid connection with MVDC." International Journal of Power Electronics and Drive Systems 13, no. 4 (2022): 2541~2554. https://doi.org/10.11591/ijpeds.v13.i4.pp2541-2554.

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Distributed generator (DG) connection to the system with the DC grid called medium voltage direct current (MVDC) grid connection has received attention and gradually integrated into the distribution grid. The linear controller, such as the PI controller, usually uses the MVDC grid control for power oscillation damping. The PI controller is limited and does not show satisfactory results when the load and parameters of the system itself are changed. This paper proposes the PI with neuron network (NN) as a feedforward controller (PINNF) to improve the control of the DG grid connection with the MVDC. The proposed PINNF controller is applied to control the power oscillation damping. Since the NN can estimate the proper feedforward control signals in each situation to the control system, the proposed PINNF controller performs better than the conventional PI controller. The effectiveness of the proposed PINNF controller is validated using nonlinear dynamic simulations on the MATLAB/Simulink program. Four case tests are presented and discussed in this paper. Results indicate the improvement of power oscillation damping stability and performance in the MVDC grid connection with the proposed PINNF controller

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Han, Qi, and Li Zhang. "VSG with additional damping controller for suppressing system low-frequency oscillations." Journal of Physics: Conference Series 2849, no. 1 (2024): 012015. http://dx.doi.org/10.1088/1742-6596/2849/1/012015.

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Abstract With the increasing attention paid to virtual synchronous generator (VSG) control technology in modern power systems, it not only provides necessary inertia and damping for the system but also introduces a new type of low-frequency oscillation mode, which not only retains the characteristics of low-frequency oscillation of synchronous generator (SG) but may also exacerbate this phenomenon. In response to this issue, this article proposes an innovative additional damping controller design aimed at providing effective active oscillation damping for SG without affecting the steady-state output power of VSG. By establishing a connection model between VSG and Single Machine Infinite Bus System (SMIB), this study deeply analyzes the specific impact of additional damping controller parameters on system stability. The simulation experiment results have verified the significant performance of the proposed controller in effectively suppressing low-frequency oscillations in the system.

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Song, Yu, and Shouyuan Wu. "Research on Low-Frequency Oscillation Damping Control of Wind Storage System Based on Pareto and Improved Particle Swarm Algorithm." Applied Sciences 13, no. 18 (2023): 10054. http://dx.doi.org/10.3390/app131810054.

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Aiming at the low-frequency oscillation problem of high-proportion wind power and energy storage connected to the power system, this paper establishes a system small signal model according to the matrix similarity theory, which lays a foundation for the research on oscillation characteristics, mechanism analysis, and suppression measures. Combined with the different installation positions of the inverter-side converter and the inverter-side POD (Power Oscillation Damper) controller of the energy storage device, the suppression mechanism and damping oscillation ability of the two on low-frequency oscillation were analyzed. Under multiple optimization objectives, the parameters of the damping controller are optimized by Pareto and improved particle swarm algorithms. Finally, through Matlab/Simulink simulation, the effectiveness of the Pareto and improved particle swarm algorithm in suppressing low-frequency oscillation of the system is verified.

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Luo, Ke, and Hai Ying Yu. "Damping Controller Based on Output Prediction Observer and LMI Method." Advanced Materials Research 219-220 (March 2011): 1371–74. http://dx.doi.org/10.4028/www.scientific.net/amr.219-220.1371.

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To damp the inter-area low-frequency oscillation in power systems, a wide-area damping supplementary inter-area controller, based on output prediction observer and LMI method, was designed in this paper. Simulation results of a test system show that the wide-area damping controller can well damp inter-area low-frequency oscillation, and is insensitive to time-delay to some degree.

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Parihar, Vikramsingh R., Roshani S. Nage, Krunal S. Panpaliya, Yogesh P. Khadse, Kaustubh S. Kalkonde, and Dr Soni A. Chaturvedi. "Adaptive Approach for Power Oscillation Damping using STATCOM." Engineering World 6 (December 9, 2024): 225–33. https://doi.org/10.37394/232025.2024.6.24.

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In this paper we had described the designing of a Power Oscillation Damping (POD) controller for a Static Synchronous Compensator (STATCOM) equipped with Energy Storage System (ESS). Various adaptive techniques like fuzzy logic controller, PID controller, algorithm, etc. can be employed to achieve this allowing a fast and adaptive approximation of the low-frequency electromechanical oscillations from locally measured signals during power system disturbances. We developed an approach using variable DC voltage control and constant modulation index method; which are effective in increasing the damping of the system at the concerned frequencies and in case of system parameter uncertainties. A control policy that optimizes active and reactive power inoculation at various connection points of the STATCOM is derived using the simplified model in MATLAB Simulink using impower system toolbox. Signal analysis of the dynamic performance of the proposed control strategy is carried out. To verify the effectiveness of the proposed control method, we carried out simulations and found that the approach provides oscillation damping irrespective of the connection point of the device and also in the presence of system parameter uncertainties.

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Simon, Likin, Jayashri Ravishankar, and K. Shanti Swarup. "Coordinated reactive power and crow bar control for DFIG-based wind turbines for power oscillation damping." Wind Engineering 43, no. 2 (2018): 95–113. http://dx.doi.org/10.1177/0309524x18780385.

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The fault ride through capability and fast controller action makes doubly fed induction generator based wind energy conversion system to actively participate in power oscillation damping. This article describes a coordinated reactive power control from grid side converter along with active crowbar scheme for doubly fed induction generator which can actively participate in power oscillation damping, and thus improve the transient stability margin of entire power system. For a reactive power oscillation damping ( [Formula: see text] power oscillation damping), it is essential that the phase of the modulated output is tightly controlled to achieve a positive damping. Detailed 3 generator 9 bus Western System Coordinating Council system is modeled in PSCAD/EMTDC with the generator dynamics. The dynamics in power flows generator rotor speeds and voltages are analyzed followed by a three-phase fault in the power system. A set of comprehensive case studies are performed to verify the proposed control scheme.

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Hasanvand, Hamed, and Mohammad Reza Zamani. "Robust control of static Var compensator-based power oscillation dampers using polynomial control in power systems." Transactions of the Institute of Measurement and Control 40, no. 5 (2017): 1395–406. http://dx.doi.org/10.1177/0142331216683774.

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A static Var compensator (SVC) installed in a power transmission network can be effectively exploited to enhance the damping of low frequency electromechanical oscillations. The application of robust control theory offers more reliable and robust damping controller to achieve desired damping level considering variations in the operating conditions of power system. This paper presents a new approach to design a robust proportional-integral (PI) controller for stabilizing power system oscillations. The variability in operating conditions is captured using an interval polynomial and then, Kharitonov’s theorem is used to design the desired damping controller. The proposed method is based on plotting the stability boundary locus in the ( kp-ki) plane and then computing the stabilizing values of the parameters of a PI controller. Besides stabilization, computation of stabilizing PI controllers that achieve user specified gain margin (Gm), phase margin (Pm) and bandwidth is studied simultaneously. This novel method enables designers to make the convenient trade-off between stability and performance by choosing the proper margins and bandwidth specifications. In addition, the most appropriate stabilizing input signal is selected using Hankel singular value (HSV) and right half plane-zeros (RHP-zeros) for the SVC-based supplementary damping controller. The effectiveness and robustness of the proposed controller are demonstrated using eigenvalue analysis and time-domain simulation for a 16 machine 68-bus test system. The simulations and analysis are implemented in matrix laboratory environment and power system analysis toolbox.

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Al-Mawsawi, S. Ali Abbas, Anwer Haider, and S. Ahmed Al-gallaf. "Design of Robust UPFC Based Damping Controller Using Biogeography Based Optimization." Indonesian Journal of Electrical Engineering and Computer Science 2, no. 3 (2016): 554. http://dx.doi.org/10.11591/ijeecs.v2.i3.pp554-565.

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In this paper a new optimization algorithm, the biogeography based optimization (BBO) is employed to design a robust power oscillation damping (POD) controller using unified power flow controller (UPFC). The controller that is used to damp low frequency oscillation is designed over a wide range of operating points using two different objective functions. The obtained controllers are then verified through time-domain simulation over different loading conditions with different system uncertainties introduced.

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DOMÍNGUEZ-GARCÍA, J. L., O. GOMIS-BELLMUNT, F. BIANCHI, and A. SUMPER. "PSS CONTROLLER FOR WIND POWER GENERATION SYSTEMS." International Journal of Modern Physics B 26, no. 25 (2012): 1246012. http://dx.doi.org/10.1142/s0217979212460125.

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Small signal stability analysis for power systems with wind farm interaction is presented. Power systems oscillation modes can be excited by disturbance or fault in the grid. Variable speed wind turbines can be regulated to reduce these oscillations, stabilising the power system. A power system stabiliser (PSS) control loop for wind power is designed in order to increase the damping of the oscillation modes. The proposed power system stabiliser controller is evaluated by small signal analysis.

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Arzeha, Nurul Aziah, Mohd Wazir Mustafa, and Rasyidah Mohamad Idris. "Damping Low Frequency Oscillations via FACTS-POD Controllers Tuned by Bees Algorithm." ELEKTRIKA- Journal of Electrical Engineering 17, no. 2 (2018): 6–14. http://dx.doi.org/10.11113/elektrika.v17n2.62.

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Power systems are often subject to low frequency electro-mechanical oscillations resulting from electrical disturbances and consequence of the development of interconnection of large power system. Flexible Alternating Current Transmission System (FACTS) devices with Power Oscillation Damping (POD) as the supplemet controller has been recent research interest in damping the oscillation. Bees Algorithm (BA) is applied to optimized the parameters of the FACTS-POD controller. The main objective of optimization is to improve the system stability by moving the electro-mechanical eigenvalues on the s-plane to the left as far as possible. The controller is tested on a 3-machine 9-bus system and simulated in PSAT in MATLAB environment. The system is disturbed by increasing 10% mechanical input to Generator 2 and second disturbance is the system experiencing a three-phase fault. The performance of the system with the FACTS-POD controller is observed in terms of position of electromechanical eigenvalues on s-plane and damping responses of power oscillations where both terms shows significant improvement as compared to the system without FACTS-POD controller.

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Liu, Qi, Jiahui Wu, Haiyun Wang, Hua Zhang, and Jian Yang. "Analysis of DFIG Interval Oscillation Based on Second-Order Sliding Film Damping Control." Energies 16, no. 7 (2023): 3091. http://dx.doi.org/10.3390/en16073091.

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This paper takes advantage of the high control flexibility and fast response time of the interfacing power electronic converter for doubly fed wind turbine grid-connected systems to address inter-area oscillations caused by inadequate system damping in power systems. A reactive-power-coordinated damping controller for a doubly fed induction generator (DFIG) is proposed, and it makes use of second-order sliding-mode technology. The suggested controller improves damping performance by controlling the reactive power. It provides benefits such as a quicker damping rate and resilience to modeling errors and parameter changes. The simulation results indicate the system’s improved performance in inter-area oscillation damping and the robustness of the suggested control technique over a broad range of functional areas.

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SWAMY, PURAMSETTI, and Dr BODDEPALLI RAJANI. "PV- STATCOM FOR POWER OSCILLATION DAMPING USING FUZZY LOGIC CONTROLLER." INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 08, no. 07 (2024): 1–13. http://dx.doi.org/10.55041/ijsrem36318.

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Abstract- Flexible AC Transmission System (FACTS) devices like Static-Synchronous Compensators (STATCOM) have been used to improve the quality and control of power systems. This paper presents a Photovoltaic (PV) system as a STATCOM, termed PV- STATCOM, which utilizes a Fuzzy Logic Controller. The primary purpose of the STATCOM is to achieve Power Oscillation Damping (POD).During the day, when the system experiences oscillations, the PV inverter in the PV- STATCOM temporarily suspends real power generation (for a few tens of seconds) to act as a STATCOM and dampen the oscillations. Once the damping is achieved, the PV inverter's real power generation is gradually restored to its pre-disturbance levels. This allows for faster grid power restoration compared to grid code requirements. At night, when there is no real power generation from the PV array, the PV inverters can use their full capacity to dampen power oscillations. MATLAB simulations indicate that the proposed PV- STATCOM significantly increases power transfer capacity under various oscillation modes. Furthermore, the PV-STATCOM is a more cost-effective solution for POD compared to equivalent STATCOM devices. This method has the potential to provide substantial savings for power generation and distribution companies. Index Terms--Photovoltaic solar power systems, voltage control, reactive power control, power oscillation damping, FACTS, STATCOM, power transmission, PV ramp rate Fuzzy logic controller.

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Pandey, Rajendra K., and Deepak Kumar Gupta. "Integrated multi-stage LQR power oscillation damping FACTS controller." CSEE Journal of Power and Energy Systems 4, no. 1 (2018): 83–91. http://dx.doi.org/10.17775/cseejpes.2016.00510.

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Surinkaew, Tossaporn, Rakibuzzaman Shah, Mithulananthan Nadarajah, and S. M. Muyeen. "Forced oscillation damping controller for an interconnected power system." IET Generation, Transmission & Distribution 14, no. 2 (2020): 339–47. http://dx.doi.org/10.1049/iet-gtd.2019.1115.

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Liu, Cheng, Guowei Cai, Deyou Yang, Zhenglong Sun, and Mingna Zhang. "The Online Identification of Dominated Inter-area Oscillations Interface Based on the Incremental Energy Function in Power System." Open Electrical & Electronic Engineering Journal 10, no. 1 (2016): 88–100. http://dx.doi.org/10.2174/1874129001610010088.

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The online identification of power system dominated inter-area oscillations interface based on the incremental energy function method is proposed in this paper. The dominant inter-area oscillations interface can be obtained by calculating branch oscillation potential energy, which is tie-line concentrated by oscillations energy. To get the oscillation energy caused by the different mechanism (free oscillation and forced oscillation), different fault position, different oscillation source. Power system dominated inter-area oscillations interface can be effectively obtained by proposed method, at the same time, dominated inter-area oscillations clusters also can be obtained. Finally, damping property of power system is effectively improved by configurating series damping controller in the dominant oscillation profile. The accuracy of the dominant oscillation interface identification is verified in this paper. At the same time, the proposed approach can also provides the basis for the configuration of damping control based on line.

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Shivakumar, R., and S. Sowranchana. "Modified Chameleon Swarm Optimization Algorithm to Improve the Power System Stability." IOP Conference Series: Materials Science and Engineering 1295, no. 1 (2023): 012015. http://dx.doi.org/10.1088/1757-899x/1295/1/012015.

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Abstract Power system stability has been difficult due to the occurrence of low frequency oscillation in the modern power system. Oscillation is mainly due to sudden changes of frequency, load, voltage, active power and reactive power. In this paper we provide a damping solution to oscillate the low frequency by using modified chameleon optimization algorithm. Damping performance and stability analysis of system is done by proposed modified chameleon Swarm Algorithm compared with conventional chameleon Swarm algorithm and Genetic algorithm with different operating condition in terms of Real power, Reactive power and Load disturbances. The comparative results confirmed that the proposed controller exhibit higher damping ratio, and better damping of deviations in speed and power angle to improve the stability of the system.

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Hussain, A. N., F. Malek, M. A. Rashid, L. Mohamed, and N. A. Mohd Affendi. "Optimal Coordinated Design of Multiple Damping Controllers Based on PSS and UPFC Device to Improve Dynamic Stability in the Power System." Mathematical Problems in Engineering 2013 (2013): 1–15. http://dx.doi.org/10.1155/2013/965282.

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Unified Power Flow Controller (UPFC) device is applied to control power flow in transmission lines. Supplementary damping controller can be installed on any control channel of the UPFC inputs to implement the task of Power Oscillation Damping (POD) controller. In this paper, we have presented the simultaneous coordinated design of the multiple damping controllers between Power System Stabilizer (PSS) and UPFC-based POD or between different multiple UPFC-based POD controllers without PSS in a single-machine infinite-bus power system in order to identify the design that provided the most effective damping performance. The parameters of the damping controllers are optimized utilizing a Chaotic Particle Swarm Optimization (CPSO) algorithm based on eigenvalue objective function. The simulation results show that the coordinated design of the multiple damping controllers has high ability in damping oscillations compared to the individual damping controllers. Furthermore, the coordinated design of UPFC-based POD controllers demonstrates the superiority over the coordinated design of PSS and UPFC-based POD controllers for enhancing greatly the stability of the power system.

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Salehi, Moslem, and Ali Akbar Motie Birjandi. "Optimal Selection of UPFC Parameters and Input Controlling Signal for Damping Power System Oscillations." Indonesian Journal of Electrical Engineering and Computer Science 2, no. 1 (2016): 61. http://dx.doi.org/10.11591/ijeecs.v2.i1.pp61-68.

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Unified power flow controller (UPFC), as one of the most important FACTS devices, can be used to increase the damping of power system oscillation. The effect rate of this controller on increasing oscillation damping depends on the appropriate selection of input controlling signal, optimal selection of UPFC controlling parameters, and its proper position in power system. In this paper, the capability of different UPFC inputs is studied by utilizing singular value decomposition (SVD) method and the best UPFC input controlling signal is selected. Supplementary control parameters are also optimally selected by PSO algorithm. This method's accuracy is simulated on a single-machine system connected to infinite bus.

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Zhang, Jun, Akihiko Yokoyama, and Toshiro Ide. "Application of Interline Power Flow Controller (IPFC) to Power Oscillation Damping." IEEJ Transactions on Power and Energy 128, no. 10 (2008): 1252–58. http://dx.doi.org/10.1541/ieejpes.128.1252.

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Ghodsi, Mohammad Reza, Alireza Tavakoli, and Amin Samanfar. "Microgrid Stability Improvement Using a Deep Neural Network Controller Based VSG." International Transactions on Electrical Energy Systems 2022 (August 31, 2022): 1–17. http://dx.doi.org/10.1155/2022/7539173.

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In order to support the inertia of a microgrid, virtual synchronous generator control is a suitable control method. However, the use of the virtual synchronous generator control leads to unacceptable transient active power sharing, active power oscillations, and the inverter output power oscillation in the event of a disturbance. This study aims to propose a deep neural network controller which combines the features of a restricted Boltzmann machine and a multilayer neural network. To initialize a multilayer neural network in the unsupervised pretraining method, the restricted Boltzmann machine is applied as a very important part of the deep learning controller. The Lyapunov stability method is used to update the weight of the deep neural network controller. The proposed method performs power oscillation damping and frequency stabilization. The experimental and simulation results are presented to assess the usefulness of the suggested method in damping oscillations and frequency stabilization.

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Ghodsi, Mohammad Reza, Alireza Tavakoli, and Amin Samanfar. "Microgrid Stability Improvement Using a Deep Neural Network Controller Based VSG." International Transactions on Electrical Energy Systems 2022 (August 31, 2022): 17. https://doi.org/10.1155/2022/7539173.

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In order to support the inertia of a microgrid, virtual synchronous generator control is a suitable control method. However, the use of the virtual synchronous generator control leads to unacceptable transient active power sharing, active power oscillations, and the inverter output power oscillation in the event of a disturbance. This study aims to propose a deep neural network controller which combines the features of a restricted Boltzmann machine and a multilayer neural network. To initialize a multilayer neural network in the unsupervised pretraining method, the restricted Boltzmann machine is applied as a very important part of the deep learning controller. The Lyapunov stability method is used to update the weight of the deep neural network controller. The proposed method performs power oscillation damping and frequency stabilization. The experimental and simulation results are presented to assess the usefulness of the suggested method in damping oscillations and frequency stabilization.

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Farzam, Vahid, and Ahad Mokhtarpour. "Inter-Area Oscillation Damping Using an STATCOM based Hybrid Shunt compensation Scheme." International Journal of Power Electronics and Drive Systems (IJPEDS) 7, no. 4 (2016): 1172. http://dx.doi.org/10.11591/ijpeds.v7.i4.pp1172-1180.

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FACTS devices are one of the latest technologies which have been used to improve power system dynamic and stability during recent years. However, widespread adoption of this technology has been hampered by high cost and reliability concerns. In this paper an economical phase imbalanced shunt reactive compensation concept has been introduced and its ability for power system dynamic enhancement and inter-area oscillation damping are investigated. A hybrid phase imbalanced scheme is a shunt capacitive compensation scheme, where two phases are compensated by fixed shunt capacitor (C) and the third phase is compensated by a Static Synchronous Compensator (STATCOM) in shunt with a fixed capacitor (CC). The power system dynamic stability enhancement would be achieved by adding a conventional Wide Area Damping Controller (WADC) to the main control loop of the single phase STATCOM. Two different control methodologies are proposed: a non-optimized conventional damping controller and a conventional damping controller with optomised parameters that are added to the main control loop of the unbalanced compensator in order to damp the inter area oscillations. The proposed arrangement would, certainly, be economically attractive when compared with a full three-phase STATCOM. The proposed scheme is prosperously applied in a 13-bus six-machine test system and various case studies are conducted to demonstrate its ability in damping inter-area oscillations and power system dynamic enhancement.

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Feleke, Solomon, Raavi Satish, Balamurali Pydi, Degarege Anteneh, Almoataz Y. Abdelaziz, and Adel El-Shahat. "Damping of Frequency and Power System Oscillations with DFIG Wind Turbine and DE Optimization." Sustainability 15, no. 6 (2023): 4751. http://dx.doi.org/10.3390/su15064751.

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Wind power is one of the most promising renewable energy resources and could become a solution to contribute to the present energy and global warming crisis of the world. The commonly used doubly fed induction generator (DFIG) wind turbines have a general trend of increasing oscillation damping. Unless properly controlled, the high penetration of wind energy will increase the oscillation and affect the control and dynamic interaction of the interconnected generators. This paper discusses power oscillation damping control in the automatic generation control (AGC) of two-area power systems with DFIG wind turbines and Matlab code/Simulink interfacing optimization methods. The differential evolution (DE) optimization technique is used to obtain the controller gain parameters. In the optimization process, a step load perturbation (SLP) of 1% has been considered in Area 1 only, and the integral of time weighted absolute error (ITAE) cost function is used. Three different test studies have been examined on the same power system model with non-reheat turbine thermal power plants. In the first case, the power system model is simulated without a controller. In Case Study 2, the system is simulated with the presence of DFIG and without a controller. In Case Study 3, the system is simulated with a PID controller and DFIG. Most of the studies available in the literature do not optimize the appropriate wind penetrating speed gain parameters for the system and do not consider the ITAE as an objective function to reduce area control error. In this regard, the main contribution and result of this paper is—with the proposed PID+DFIG optimized DE—the ITAE objective function error value in the case study without a controller being 6.7865, which is reduced to 1.6008 in the case study with PID+DFIG-optimized DE. In addition, with the proposed controller methods, the dynamic system time responses such as rise time, settling time, overshoot, and undershoot are improved for system tie-line power, change in frequency, and system area controller error. Similarly, with the proposed controller, fast system convergence and fast system oscillation damping are achieved. Generally, it is inferred that the incorporation of DFIG wind turbines in both areas has appreciably improved the dynamic performance and system stability under consideration.

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Jankovic, Njegos, Javier Roldan-Perez, Milan Prodanovic, and Luis Rouco. "Centralised Multimode Power Oscillation Damping Controller for Photovoltaic Plants with Communication Delay Compensation." IEEE Transactions on Energy Conversion 39, no. 1 (2023): 311–21. https://doi.org/10.1109/TEC.2023.3317577.

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Low-frequency oscillations are an inherent phenomena in transmission networks and renewable energy plants should be configured to damp them. Commonly, a centralised controller is used in PV plants to coordinate PV generators via communication channels. However, the communication systems of PV plants introduce delays of a stochastic nature that degrade the performance of centralised control algorithms. Therefore, controllers for oscillation damping may not operate correctly unless the communication channel characteristics are not considered and compensated. In this article, a centralised controller is proposed for the oscillation damping that uses a PV plant with all the realistic effects of communication channels taken into consideration. The communication channels are modelled based on measurements taken in a laboratory environment, considering its stochastic nature. The controller is designed to damp several modes of oscillation by using the open-loop phase shift compensation. Theoretical developments were validated in a laboratory using four converters acting as two PV inverters, a battery and a STATCOM. A centralised controller was implemented on a real-time processing platform with communication infrastructure. Experimental results show the communication channels impose severe restrictions on the performance of centralised POD controllers, highlighting the importance of their accurate modelling and consideration during the controller design stage.

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Hussain, Ali Nasser, F. Malek, Mohd Abdur Rashid, Latifah Mohamed, and Ismail Daut. "UPFC Device Application on Power System Oscillations to Improve the Damping Performance." Advanced Materials Research 694-697 (May 2013): 830–37. http://dx.doi.org/10.4028/www.scientific.net/amr.694-697.830.

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UPFC is considered as an important modern device in the flexible ac transmission systems family that provides the controllability and flexibility for transmission lines. It is also capable of enhancing the stability of the power system by the addition of a supplementary damping controller, which can be installed on any control channel of the UPFC inputs to implement the task of power oscillation damping controller. This paper presents the application of UPFC to enhance damping of low frequency oscillations by the simultaneous coordinated design between power system stabilizer and different UPFC supplementary damping controller in order to identify the design that provided the most robust damping performance in a single machine infinite bus. The parameters of the damping controller were tuned in the individual and coordinated design by using a chaotic particle swarm optimization algorithm that optimized the given eigenvalue-based objective function. The results analysis reveals that the proposed coordinated designs have high ability in damping Low-frequency oscillations and improve the system damping over their individual control responses. In addition, the coordinated design PSS & δE provides superior performance in comparison to the all coordinated designs.

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Uddin, Zeb, Zeb, et al. "A Neural Network-Based Model Reference Control Architecture for Oscillation Damping in Interconnected Power System." Energies 12, no. 19 (2019): 3653. http://dx.doi.org/10.3390/en12193653.

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In this paper, a model reference controller (MRC) based on a neural network (NN) is proposed for damping oscillations in electric power systems. Variation in reactive load, internal or external perturbation/faults, and asynchronization of the connected machine cause oscillations in power systems. If the oscillation is not damped properly, it will lead to a complete collapse of the power system. An MRC base unified power flow controller (UPFC) is proposed to mitigate the oscillations in 2-area, 4-machine interconnected power systems. The MRC controller is using the NN for training, as well as for plant identification. The proposed NN-based MRC controller is capable of damping power oscillations; hence, the system acquires a stable condition. The response of the proposed MRC is compared with the traditionally used proportional integral (PI) controller to validate its performance. The key performance indicator integral square error (ISE) and integral absolute error (IAE) of both controllers is calculated for single phase, two phase, and three phase faults. MATLAB/Simulink is used to implement and simulate the 2-area, 4-machine power system.

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Oni, Oluwafemi Emmanuel, and Omowunmi Mary Longe. "Analysis of Secondary Controller on MTDC Link with Solar PV Integration for Inter-Area Power Oscillation Damping." Energies 16, no. 17 (2023): 6295. http://dx.doi.org/10.3390/en16176295.

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Integration of renewable energy sources is important in limiting the continuous environmental degradation and emissions caused by energy generation from fossil fuels and thus becoming a better alternative for a large-scale power mix. However, an adequate analysis of the interaction with the alternating current (AC) network during network disturbance, especially during inter-area power (IAP) oscillations is needed. Insufficient damping of oscillations can significantly impact the reliability and effective operation of a whole power system. Therefore, this paper focuses on the stability of the modified Kundur two-area four-machine (MKTAFM) system. A robust secondary controller is proposed and implemented on a line commutated converter (LCC)-based multi-terminal high voltage direct current (MTDC) system. The solution consists of a local generator controller and the LCC MTDC (LMTDC) system, voltage-dependent current order limiter, and extinction angle controller. The proposed robust controller is designed for the LMTDC systems to further dampen the inter-area power oscillations. Three operational scenarios were implemented in this study, which are the local generator controller and double circuits AC line, local generator controller with LMTDC controllers, and local generator controller with LMTDC controllers and secondary controller. The simulation result carried out on PSCAD/EMTDC recorded better damping of the inter-area power oscillation with LMTDC. A considerable improvement of 100% damping of the IAP oscillations was observed when a secondary controller was implemented on the LMTDC.

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Li, Jiening, Wencheng Guo, Fanchao Song, Kedong Shu, and Min Huang. "Multi-scale oscillation of pumped storage - wind power coupling system with surge tanks." IOP Conference Series: Earth and Environmental Science 1411, no. 1 (2024): 012047. https://doi.org/10.1088/1755-1315/1411/1/012047.

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Abstract Under grid-connected operation, pumped storage - wind power coupling system (PSWPCS) with surge tanks generates the problem of multi-scale oscillation, which leads to the complexity of dynamic response and difficulty of regulation control. Thus, this paper researches the multi-scale oscillation of PSWPCS with surge tanks. Firstly, the mathematical equations of PSWPCS with surge tanks are established. Then, the multi-scale oscillation and effect rules of surge tank area are investigated. Finally, the influence mechanism of multi-scale oscillation is studied. The results indicate that PSWPCS with surge tanks has multi-scale oscillation. The ultra-low frequency damping performance of upstream and downstream surge tanks is stronger than that of single surge tank, and the negative damping characteristics of which changes significantly with the 50% increase of upstream surge tank area. A larger water head of power station and smaller head loss of headrace tunnel are easier to induce the ultra-low frequency oscillation. The pitch angle controller of wind turbine can significantly suppress the low frequency oscillation under larger proportional and smaller integral gain. When proportional and integral gain of phase-locked loop controller are small, the sub-synchronous oscillation will be excited. Smaller stator self-inductance and rotor resistance can improve the system regulation performance.

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Yang, Yanan, Yujun Li, Xiaotian Yuan, Jiapeng Li, and Zhengchun Du. "Damping Torque Analysis of the PMSG-Based WT with Supplementary Damping Control for Mitigating Interarea Oscillations." International Transactions on Electrical Energy Systems 2022 (November 30, 2022): 1–15. http://dx.doi.org/10.1155/2022/2391770.

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This study presents a comprehensive analysis of the impact that a supplementary damping controller of the permanent magnet synchronous generator (PMSG)-based wind turbine (WT) has on low-frequency oscillation (LFO) damping. A reduced mathematical model of an interarea system is first established. Then, an auxiliary damping controller is designed using the PMSG active power control loop, enabling the WT to actively support the interarea LFO mitigation. Based on this, the damping torque analysis (DTA) method is applied to explore the contribution of the PMSG-based WT with an auxiliary damping controller to LFO damping enhancement, whose analytical expressions of the damping torque coefficients reveal the impacts of the control parameters and the operation conditions on the system damping characteristics. It is evident that the installation location of the wind power plant (WPP) plays a leading role in determining whether the damping provided by the PMSG controller is positive or negative. Also, the contribution of damping from the PMSG can be improved by tuning the droop coefficient of the PMSG controller properly. The results indicate that the proposed damping control is always helpful in improving the system damping when the wind power penetration increases. Accordingly, analytical conclusions can serve as guidelines for the control design. Case studies of a two-area test system integrated with a PMSG-based wind farm have been conducted to verify the theoretical analysis.

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Wang, Bao Hua, and Zhong Ke Shi. "Dynamic Adaptive Sliding Mode DC Power Modulation Controller in Parallel AC/DC Transmission System." Advanced Materials Research 433-440 (January 2012): 6783–88. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.6783.

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The effective DC power modulation controller influences the security and stability of AC/DC interconnected power system significantly. Based on the direct feedback linearization model of parallel AC/DC transmission system, the DC power modulation controller is designed by using the dynamical adaptive sliding mode control designing method. Using an adaptive technique to estimate the switching control gain and damping coefficient, the dynamical sliding surface is proposed to eliminate tremble. The proposed adaptive sliding mode control scheme can be implemented without the requirement that the bounds of the uncertainties and the disturbances should be known in advance; meanwhile its design is very simple. The simulation results show that this proposed controller is superior to the nonlinear H∞ DC power modulation controller in damping oscillation and robustness.

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Alshuaibi, Khaled, Yi Zhao, Lin Zhu, et al. "Forced Oscillation Grid Vulnerability Analysis and Mitigation Using Inverter-Based Resources: Texas Grid Case Study." Energies 15, no. 8 (2022): 2819. http://dx.doi.org/10.3390/en15082819.

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Forced oscillation events have become a challenging problem with the increasing penetration of renewable and other inverter-based resources (IBRs), especially when the forced oscillation frequency coincides with the dominant natural oscillation frequency. A severe forced oscillation event can deteriorate power system dynamic stability, damage equipment, and limit power transfer capability. This paper proposes a two-dimension scanning forced oscillation grid vulnerability analysis method to identify areas/zones in the system that are critical to forced oscillation. These critical areas/zones can be further considered as effective actuator locations for the deployment of forced oscillation damping controllers. Additionally, active power modulation control through IBRs is also proposed to reduce the forced oscillation impact on the entire grid. The proposed methods are demonstrated through a case study on a synthetic Texas power system model. The simulation results demonstrate that the critical areas/zones of forced oscillation are related to the areas that highly participate in the natural oscillations and the proposed oscillation damping controller through IBRs can effectively reduce the forced oscillation impact in the entire system.

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Armansyah, Ferdi, Naoto Yorino, and Hiroshi Sasaki. "POWER SYSTEM OSCILLATION DAMPING CONTROL BY ROBUST SVC SUPPLEMENTARY CONTROLLER." IEEJ Transactions on Power and Energy 120, no. 8-9 (2000): 1054–60. http://dx.doi.org/10.1541/ieejpes1990.120.8-9_1054.

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Arif, Jawad, Swakshar Ray, and Balarko Chaudhuri. "Multivariable Self-Tuning Feedback Linearization Controller for Power Oscillation Damping." IEEE Transactions on Control Systems Technology 22, no. 4 (2014): 1519–26. http://dx.doi.org/10.1109/tcst.2013.2279939.

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Mathad, Vireshkumar, and Gururaj Kulkarni. "Artificial-neural-network based unified power flow controller for mitigation of power oscillations." Indonesian Journal of Electrical Engineering and Computer Science 24, no. 3 (2021): 1323. http://dx.doi.org/10.11591/ijeecs.v24.i3.pp1323-1331.

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The series and shunt control scheme of unified power flow controller (UPFC) impacts the performance and stability of the power system during power swing. UPFC is the most versatile and voltage source converter device as it can control the real and reactive power of the transmission system simultaneously or selectively. When any system is subjected to any disturbance or fault, there are many challenges in damping power oscillation using conventional methods. This paper presents the neural network-based controller that replaces the proportional-integral (PI) controller to minimize the power oscillations. The performance of the artificial neural network (ANN) controller is evaluated on IEEE 9 bus system and compared with a conventional PI controller.

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Mathad, Vireshkumar, and Gururaj Kulkarni. "Artificial-neural-network based unified power flow controller for mitigation of power oscillations." Indonesian Journal of Electrical Engineering and Computer Science 24, no. 3 (2021): 1323–31. https://doi.org/10.11591/ijeecs.v24.i3.pp1323-1331.

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The series and shunt control scheme of unified power flow controller (UPFC) impacts the performance and stability of the power system during power swing. UPFC is the most versatile and voltage source converter device as it can control the real and reactive power of the transmission system simultaneously or selectively. When any system is subjected to any disturbance or fault, there are many challenges in damping power oscillation using conventional methods. This paper presents the neural network-based controller that replaces the proportional-integral (PI) controller to minimize the power oscillations. The performance of the artificial neural network (ANN) controller is evaluated on IEEE 9 bus system and compared with a conventional PI controller.

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Chen, Qin Lei, Chun Lin Guo, Han Chen, Jun Chen, Ya Nan Li, and Wei Yong Jiang. "Design of HVDC Supplementary Subsynchronous Damping Controller." Advanced Materials Research 960-961 (June 2014): 1017–21. http://dx.doi.org/10.4028/www.scientific.net/amr.960-961.1017.

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Supplementary subsynchronous damping controller (SSDC) is an effective countermeasure to damp the subsynchronous oscillation (SSO) caused by HVDC. On the basis of analyzing the mechanism of inducing SSO by HVDC, the principle of damping SSO by SSDC and SSDC design methods are expounded. A SSDC is designed for a practical power plant in China, and the correctness and validity of the SSDC control strategies are proved with time domain electromagnetic simulation results.

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Islam, Naz Niamul, M. A. Hannan, Hussein Shareef, and Azah Mohamad. "Bijective Differential Search Algorithm for Robust Design of Damping Controller in Multimachine Power System." Applied Mechanics and Materials 785 (August 2015): 424–28. http://dx.doi.org/10.4028/www.scientific.net/amm.785.424.

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Low frequency oscillation (LFO) is a serious threat to the interconnection of power system and its safe operation. In this paper, optimum damping performances over LFO is achieved by implementing Bijective Differential Search Algorithm (B-DSA) to large interconnected power system. Conventional two stages lead-lag compensator is optimized as the Power System Stabilizer (PSS) and Linear Time Invariant (LTI) State Space system models are used to conduct stability analysis of power system. The tuning problem of PSS in multimachine system was formulated as a multi-objectives function. The simulations are conducted in 5-AREA 16 Machine test power system for severe system fault in order to verify the robust design of damping controller. The obtained results are compared with standard DSA optimization technique. The findings show the improved damping achieved by B-DSA than DSA algorithm. The settling times achieved using B-DSA based designed PSSs are 3.74sec and 4.57sec for local mode and inter-area mode of oscillations respectively. The successful damping over oscillation modes of LFO justifies the proposed technique is efficient for the improvement of power system security in adverse condition.

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Prabowo, Dwi Agus, and Istiyo Winarno. "Thyristor Controlled Series Capasitor Berbasis Adaptive Fuzzy Logic Controller Sebagai Percepatan Peredaman Osilasi Daya Pada Sistem Tenaga." JEEE-U (Journal of Electrical and Electronic Engineering-UMSIDA) 2, no. 1 (2018): 37–41. http://dx.doi.org/10.21070/jeee-u.v2i1.1514.

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The current population growth is very fast, so also the number of settlements more evenly, with this demand fulfillment demand for electricity is increasingly widespread and more, therebr making electric power generation service providers continue to strive to provide uniform and stable electrical energy. On the other hand there is an impact due to the many loads on the network electricity that can not be estimated its use, rise and fall of the load, therefore the power system stability must be maintained, this makes the stability of the power system the main concern in a operating. Without good dampening the disturbance will be isolated in the system and out of the stability area, so it can lead to worse effects such as total blackout. Thyristor Controlled Series Capacitor (TCSC) is a device that can be used to regulate power inmadance of power system. TCSC has three main components such as inductor, capacitor, and thyristor. The way TCSC works is by setting the angle of ignition, here the adaptive fuzzy controller is used as the best alpha-viewer the system needs. From the comparison simulation, the difference of fuzzy controller with adaptive fuzzy with fuzzy controller can reduce oscillation at 0.68 second average time and with fuzzy oscillation adaptive controller that can be muffled at 0.56 seconds, with this adaptive fuzzy controller capable damping oscillations 0.12 seconds faster in comparison with fuzzy controllers. So with this oscillation damping can reduce the impact of isolated disturbances in the system.

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Li, Jin, Ya Min Pi, and Hui Yuan Yang. "Study on Improving Power System Damping by Using DPFC." Advanced Materials Research 986-987 (July 2014): 1286–90. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.1286.

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In this paper, the series converters of Distributed Power Flow Controller are the main object of study. Its mechanism of suppressing power system oscillations is studied by theoretical analysis and formula derivation, which relies on a single-machine infinite-bus power system, installed the series converters. Then based on the mechanism, adopting the classic PI control and the damping controller, designed the transient stability control loop for the series converters. Finally, simulations performed by PSCAD/EMTDC, the results show that DPFC device can effectively suppress oscillation and improve system stability.

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Zeb, Nadia, Bilal Khan, Sahibzada Muhammad Ali, et al. "Adaptive Controller Based Unified Power Flow Control for Low Power Oscillation Damping." Asian Journal of Control 20, no. 3 (2017): 1115–24. http://dx.doi.org/10.1002/asjc.1582.

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Deng, Jun, Jianbo Wang, Shupeng Li, Haijing Zhang, Shutao Peng, and Tong Wang. "Adaptive Damping Design of PMSG Integrated Power System with Virtual Synchronous Generator Control." Energies 13, no. 8 (2020): 2037. http://dx.doi.org/10.3390/en13082037.

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With the continuous development of wind power capacity, a large number of wind turbines connected by power electronic devices make the system inertia lower, which leads to the problem of system frequency stability degradation. The virtual synchronous generator (VSG) control can make wind turbines possess inertia and damping. However, the stochastic dynamic behavior of wind generation results in the stochastic changing of operating condition; this paper presents an adaptive subsynchronous oscillation (SSO) damping control method for the wind generation with VSG control. Firstly, the small signal model of the permanent magnet synchronous generator (PMSG) with VSG is built, and the model of state space is derived and built. The active power of PMSG is selected as the variable parameter vector to establish a polytopic linear variable parameter system model. Then, based on the hybrid H2/H∞ control method, each vertex state feedback matrix is solved by linear matrix inequality, and a subsynchronous oscillation adaptive damping controller with polytope is obtained. Finally, the 4-machine 2-area system connected to two PMSGs with VSG control is used as the test system for time domain simulation. The simulation results demonstrate that the LPV based adaptive damping controller could provide enough damping under the circumstances of wider changes of wind power outputs.

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Journal articles on the topic 'Power Oscillation Damping Controller(PODC)'

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