Articles de revues : « Coordinated power oscillation damping control »

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Tumiran, Tumiran, Cuk Supriyadi Ali Nandar et Sarjiya Sarjiya. « Power Oscillation Damping Control using Robust Coordinated Smart Devices ». TELKOMNIKA (Telecommunication Computing Electronics and Control) 9, n^o 1 (1 avril 2011) : 65. http://dx.doi.org/10.12928/telkomnika.v9i1.646.

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Hussain, Ali Nasser, F. Malek, Mohd Abdur Rashid, Latifah Mohamed et Ismail Daut. « UPFC Device Application on Power System Oscillations to Improve the Damping Performance ». Advanced Materials Research 694-697 (mai 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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Simon, Likin, Jayashri Ravishankar et K. Shanti Swarup. « Coordinated reactive power and crow bar control for DFIG-based wind turbines for power oscillation damping ». Wind Engineering 43, n^o 2 (13 juillet 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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Hussain, A. N., F. Malek, M. A. Rashid, L. Mohamed et 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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Hu, Pan, Hongkun Chen, Kan Cao, Yuchuan Hu, Ding Kai, Lei Chen et Yi Wang. « Coordinated Control of Multiple Virtual Synchronous Generators in Mitigating Power Oscillation ». Energies 11, n^o 10 (17 octobre 2018) : 2788. http://dx.doi.org/10.3390/en11102788.

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Virtual synchronous generators (VSGs) present attractive technical advantages and contribute to enhanced system operation and reduced oscillation damping in dynamic systems. Traditional VSGs often lack an interworking during power oscillation. In this paper, a coordinated control strategy for multiple VSGs is proposed for mitigating power oscillation. Based on a theoretical analysis of the parameter impact of VSGs, a coordinated approach considering uncertainty is presented by utilizing polytopic linear differential inclusion (PLDI) and a D-stable model to enhance the small-signal stability of system. Subsequently, the inertia and damping of multiple VSGs are jointly exploited to reduce oscillation periods and overshoots during transient response. Simulation, utilizing a two-area four-machine system and a typical microgrid test system, demonstrates the benefits of the proposed strategy in enhancing operation stability and the anti-disturbing ability of multiple VSGs. The results conclusively confirm the validity and applicability of the method.

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Cai, Guowei, Xiangsong Chen, Zhenglong Sun, Deyou Yang, Cheng Liu et 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, n^o 11 (8 juin 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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Yan, Xiangwu, Aazim Rasool, Farukh Abbas, Haaris Rasool et Hongxia Guo. « Analysis and Optimization of the Coordinated Multi-VSG Sources ». Electronics 8, n^o 1 (26 décembre 2018) : 28. http://dx.doi.org/10.3390/electronics8010028.

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The penetration of renewable energy sources (RES) into a grid via inverters causes a stability issue due to the absence of an inertia. A virtual synchronous generator (VSG) is designed to provide an artificial inertia and droop control to the grid-connected inverters. The different power ratings of multiple VSGs create complications in the coordination due to unequal droop or damping coefficient ‘ D ’. The dependency of a factor ‘ D ’ on P − ω droop control under static state and a damping behavior during power oscillation under dynamic state is analyzed by considering three cases on multi-VSGs microgrid system and the equivalent equations of P − ω droop control are derived for all three cases to see the effect of a load on the overall system’s frequency. A master–slave configuration of a VSG is proposed to deliver maximum power during static state, but provides P − ω control during the dynamic state. Simulation results verify the improvement introduced by the proposed VSG control.

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Yao, Zhiqing, Zhenghang Hao, Zhuo Chen et Zhiguo Yan. « Coordinated Stability Control of Wind-Thermal Hybrid AC/DC Power System ». Mathematical Problems in Engineering 2015 (2015) : 1–9. http://dx.doi.org/10.1155/2015/591232.

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The wind-thermal hybrid power transmission will someday be the main form of transmitting wind power in China but such transmission mode is poor in system stability. In this paper, a coordinated stability control strategy is proposed to improve the system stability. Firstly, the mathematical model of doubly fed wind farms and DC power transmission system is established. The rapid power controllability of large-scale wind farms is discussed based on DFIG model and wide-field optical fiber delay feature. Secondly, low frequency oscillation and power-angle stability are analyzed and discussed under the hybrid transmission mode of a conventional power plant with wind farms. A coordinated control strategy for the wind-thermal hybrid AC/DC power system is proposed and an experimental prototype is made. Finally, real time simulation modeling is set up through Real Time Digital Simulator (RTDS), including wind power system and synchronous generator system and DC power transmission system. The experimental prototype is connected with RTDS for joint debugging. Joint debugging result shows that, under the coordinated control strategy, the experimental prototype is conductive to enhance the grid damping and effectively prevents the grid from occurring low frequency oscillation. It can also increase the transient power-angle stability of a power system.

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Sangeetha, J., et P. Renuga. « Recurrent ANFIS-Coordinated Controller Design for Multimachine Power System with FACTS Devices ». Journal of Circuits, Systems and Computers 26, n^o 02 (3 novembre 2016) : 1750034. http://dx.doi.org/10.1142/s0218126617500347.

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This paper proposes the design of auxiliary-coordinated controller for static VAR compensator (SVC) and thyristor-controlled series capacitor (TCSC) devices by adaptive fuzzy optimized technique for oscillation damping in multimachine power systems. The performance of the coordinated control of SVC and TCSC devices based on feedforward adaptive neuro fuzzy inference system (F-ANFIS) is compared with that of the adaptive neuro fuzzy inference system (ANFIS) structure based on recurrent adaptive neuro fuzzy inference system (R-ANFIS) network architecture. The objective of the coordinated controller design is to tune the parameters of SVC and TCSC fuzzy lead lag compensator simultaneously to minimize the deviation of rotor angle and rotor speed of the generators. The performance of the system is enhanced by optimally tuning the membership functions of fuzzy lead lag controller parameter of the flexible AC transmission system (FACTS) by R-ANFIS controller. The training data for F-ANFIS and R-ANFIS are generated by conventional linear control technique under various operating conditions. The offline trained controller tunes the parameter of lead lag controller in online. The oscillation damping ability of the system is analyzed for three-machine test system by calculating the standard deviation and cost function. The superior performance of R-ANFIS controller is compared with various particle swarm optimization-based feedforward ANFIS controllers available in literature.

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Zhao, Haoran, Zhongwei Lin, Qiuwei Wu et Sheng Huang. « Model predictive control based coordinated control of multi-terminal HVDC for enhanced frequency oscillation damping ». International Journal of Electrical Power & ; Energy Systems 123 (décembre 2020) : 106328. http://dx.doi.org/10.1016/j.ijepes.2020.106328.

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Eriksson, Robert, et Lennart Söder. « Optimal coordinated control of multiple HVDC links for power oscillation damping based on model identification ». European Transactions on Electrical Power 22, n^o 2 (29 décembre 2010) : 188–205. http://dx.doi.org/10.1002/etep.554.

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Pipelzadeh, Yousef, Nilanjan Ray Chaudhuri, Balarko Chaudhuri et Tim C. Green. « Coordinated Control of Offshore Wind Farm and Onshore HVDC Converter for Effective Power Oscillation Damping ». IEEE Transactions on Power Systems 32, n^o 3 (mai 2017) : 1860–72. http://dx.doi.org/10.1109/tpwrs.2016.2581984.

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Sharma, P. R. « Coordinated Control of SVS and CSC for Damping Power System Oscillations ». International Journal on Electrical Engineering and Informatics 2, n^o 2 (30 juin 2010) : 84–101. http://dx.doi.org/10.15676/ijeei.2010.2.2.2.

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Alias, Feba, et Manohar Singh. « Coordinated control among PSS, WTG and BESS for improving Small-Signal Stability ». International Journal of Emerging Electric Power Systems 22, n^o 4 (2 juin 2021) : 505–23. http://dx.doi.org/10.1515/ijeeps-2021-0102.

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Abstract The goal towards attaining a sustainable future has led to the rapid increase in the integration of converter control based generators (CCBGs). The low inertia response characteristics of CCBGs and the weak tie lines in interconnected systems pose a huge threat to Small-Signal Stability (SSS). Adequate damping of low-frequency oscillations (LFO) is pivotal in ensuring the maximum power transfer through the critical transmission corridors. These operational issues become more serious with the significant reduction in system inertia as a result of the high penetration of CCBGs. Therefore, appropriate control techniques are an absolute requirement for preventing LFOs from limiting the penetration of CCBGs in interconnected networks. This may also eventually lead to revisions in grid codes mandating CCBGs to provide auxiliary damping control. But, the progressive addition of multiple damping controllers for specific target modes can lead to the drifting of eigenvalues (EVs) associated with other electromechanical modes (EMs) in the system. This is due to the adverse interactions between multiple damping controllers in the uncoordinated control approach and may result in deteriorating SSS. Therefore, this paper proposes a simultaneous coordinated control among Battery Energy Storage System (BESS), Wind Turbine Generators (WTG) and Power System Stabilizer (PSS) for enhancing SSS in networks with high wind penetration by considering both inter-area (IA) and local modes. The performance of the proposed coordinated control is corroborated using IEEE 68 bus system for multiple operating scenarios for which the critical modes in the system have the lowest damping index (DI). The effectiveness of modulating the active power, reactive power and simultaneous modulation of both active and reactive power injected by BESS along with a dual-channel Optimized WTG Damping Controller (DOWDC) and PSS is evaluated. The impact of the different coordinated control strategies on voltage dynamics is also investigated. The simulation results validate the better performance of the proposed coordinated control over uncoordinated control approaches.

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Kumar, Harish, et Ravindra Pratap Singh. « Coordinated control of TCSC and UPFC to aid damping oscillations in the power system ». International Journal of Electronics 106, n^o 12 (2 juillet 2019) : 1938–63. http://dx.doi.org/10.1080/00207217.2019.1636296.

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Gupta, Abhilash Kumar, Kusum Verma et Khaleequr Rehman Niazi. « Robust coordinated control for damping low frequency oscillations in high wind penetration power system ». International Transactions on Electrical Energy Systems 29, n^o 5 (27 février 2019) : e12006. http://dx.doi.org/10.1002/2050-7038.12006.

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Surinkaew, Tossaporn, et Issarachai Ngamroo. « Two-level coordinated controllers for robust inter-area oscillation damping considering impact of local latency ». IET Generation, Transmission & ; Distribution 11, n^o 18 (21 décembre 2017) : 4520–30. http://dx.doi.org/10.1049/iet-gtd.2016.2068.

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Gupta, Abhilash Kumar, Kusum Verma et Khaleequr Rehman Niazi. « Wide area coordinated control for low-frequency oscillations damping in a wind-integrated power system ». Journal of Engineering 2019, n^o 18 (1 juillet 2019) : 4941–45. http://dx.doi.org/10.1049/joe.2018.9315.

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Devarapalli, Ramesh, et Biplab Bhattacharyya. « A novel hybrid AGWO-PSO algorithm in mitigation of power network oscillations with STATCOM ». Numerical Algebra, Control & ; Optimization 11, n^o 4 (2021) : 579. http://dx.doi.org/10.3934/naco.2020057.

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The assimilation of flexible AC transmission (FACTS) controllers to the existing power network outweigh the numerous alternatives in enhancing the damping behavior for the inter-area /intra-area system oscillations of a power network. This paper provides a rigorous analysis in damping of oscillations in a power network. It utilizes a shunt connected voltage source converter (VSC) based FACTS device to enhance the system operating characteristics. A comprehensive system mathematical modelling has been developed for demonstrating the system behavior under different loading conditions. A novel hybrid augmented grey wolf optimization-particle swarm optimization (AGWO-PSO) is proposed for the coordinated design of controllers static synchronous compensator (STATCOM) and power system stabilizers (PSSs). A multi-objective function, comprising damping ratio improvement and drifting the real part to the left-hand side of S-plane of the system poles, has been developed to achieve the objective and the effectiveness of the proposed algorithms have been analyzed by monitoring the system performance under different loading conditions. Eigenvalue analysis and damping nature of the system states under perturbation have been presented for the proposed algorithms under different loading conditions, and the performance evaluation of the proposed algorithms have been done by means of time of execution and the convergence characteristics.

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Manuaba, IBG. « COORDINATION CONTROLLER POWER SYSTEM IN JAVA-BALI 500 KV INTERCONECTED BASED ON BACTERIA FORAGING - PARTICLE SWARM OPTIMIZATION FOR STABILITY IMPROVEMENT ». Kursor 8, n^o 2 (12 décembre 2016) : 87. http://dx.doi.org/10.28961/kursor.v8i2.65.

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Power system stabilizer (PSS) and flexible AC transmission system (FACTS) damping controller to improve the stability of the power system has been widely used. A coordinated control method based on the combined computational evolutionary theory is proposed to overcome some of damping controllers simultaneously so as to keep the allowable level of power system damping. It works by making full use of favorable interaction between the controlling and minimizing adverse interactions so that the power system oscillations can be suppressed effectively. Proportional integral derivative (PID) controller tuning based power system stabilizer types PSS3B (PIDPSS3B), static var compensator (SVC) and automatic voltage regulator (AVR) presented in this paper. PID controller gain parameters such as proportional, integral factor, differential coefficient and get AVR selected and optimized by BF-PSOTVAC. The integral time absolut error (ITAE) standards of optimization design as objective function. The results of simulations show that performance index of system the proposed method is 42.7890. The BF-PSOTVAC method has the capability to damping optimally and suppresses error to minimum.

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Albatran, Saher, Muwaffaq I. Alomoush et Ahmed M. Koran. « Gravitational-Search Algorithm for Optimal Controllers Design of Doubly-fed Induction Generator ». International Journal of Electrical and Computer Engineering (IJECE) 8, n^o 2 (1 avril 2018) : 780. http://dx.doi.org/10.11591/ijece.v8i2.pp780-792.

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Recently, the Gravitational-Search Algorithm (GSA) has been presented as a promising physics-inspired stochastic global optimization technique. It takes its derivation and features from laws of gravitation. This paper applies the GSA to design optimal controllers of a nonlinear system consisting of a doubly-fed induction generator (DFIG) driven by a wind turbine. Both the active and the reactive power are controlled and processed through a back-to-back converter. The active power control loop consists of two cascaded proportional integral (PI) controllers. Another PI controller is used to set the q-component of the rotor voltage by compensating the generated reactive power. The GSA is used to simultaneously tune the parameters of the three PI controllers. A time-weighted absolute error (ITAE) is used in the objective function to stabilize the system and increase its damping when subjected to different disturbances. Simulation results will demonstrate that the optimal GSA-based coordinated controllers can efficiently damp system oscillations under severe disturbances. Moreover, simulation results will show that the designed optimal controllers obtained using the GSA perform better than the optimal controllers obtained using two commonly used global optimization techniques, which are the Genetic Algorithm (GA) and Particle Swarm Optimization (PSO).

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Murali, Duraiswamy, et Marimuthu Rajaram. « Comparison of Damping Performance of Conventional And Neuro–Fuzzy Based Power System Stabilizers Applied in Multi–Machine Power Systems ». Journal of Electrical Engineering 64, n^o 6 (1 novembre 2013) : 366–70. http://dx.doi.org/10.2478/jee-2013-0055.

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Abstract The objective of this paper is to investigate the power system damping enhancement via power system stabilizers (PSSs). However, the conventional power system stabilizers (CPSSs) have certain drawbacks. There are many techniques proposed in the literature for damping improvement of low frequency power system oscillations. In this paper, adaptive neuro-fuzzy inference system (ANFIS) technology has been proposed to coordinate the CPSSs in a multi-machine power system. The time-domain simulations are carried out in Matlab/Simulink environment to validate the effectiveness of the proposed control scheme under different operating conditions.

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Watanabe, Takao, Junichi Ohishi et Keiichiro Yasuda. « Robust Damping Control of Power Oscillation Incorporating Parametric Resonance ». IEEJ Transactions on Power and Energy 121, n^o 11 (2001) : 1483–89. http://dx.doi.org/10.1541/ieejpes1990.121.11_1483.

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Pandey, R. K., et N. K. Singh. « UPFC control parameter identification for effective power oscillation damping ». International Journal of Electrical Power & ; Energy Systems 31, n^o 6 (juillet 2009) : 269–76. http://dx.doi.org/10.1016/j.ijepes.2009.03.002.

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Watanabe, Takao, Junichi Ohishi et Keiichiro Yasuda. « Robust damping control of power oscillation incorporating parametric resonance ». Electrical Engineering in Japan 142, n^o 1 (23 octobre 2002) : 42–49. http://dx.doi.org/10.1002/eej.10069.

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Hasanvand, Hamed, et 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, n^o 5 (24 janvier 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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Zhong, Jia Chen, Wen Ying Liu et Wei Zheng. « Analysis and Control on Oscillation Characteristics of Smart Grid with Large-Scale Wind Power Integration ». Advanced Materials Research 732-733 (août 2013) : 1342–47. http://dx.doi.org/10.4028/www.scientific.net/amr.732-733.1342.

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To deal with the problem of large-scale wind power integration and its influence on low frequency oscillation characteristics of Gansu power network, this paper built the low frequency oscillation simulation model with large amount of wind power integration, and proposed an index, namely grid structural weakness degree, based on the damping ratio index, to investigate low frequency oscillation characteristics. The simulation shows that the damping ratio decreases as the wind turbine output increases; and when the damping ratio is lower than 3%, or weakness degree lower than 4, it is more likely to cause low frequency oscillation in Gansu power network, and early-warning should be taken. The analysis provides a reference for low frequency oscillation early-warning and control.

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Zeb, Nadia, Bilal Khan, Sahibzada Muhammad Ali, Chaudhry Arshad Mehmood, Rabia Sajjad, Umar Farid et Ayesha Bibi. « Adaptive Controller Based Unified Power Flow Control for Low Power Oscillation Damping ». Asian Journal of Control 20, n^o 3 (7 juillet 2017) : 1115–24. http://dx.doi.org/10.1002/asjc.1582.

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Abido, M. A., et Saleh M. Bamasak. « Oscillation Damping Enhancement via Coordinated Design of PSS and FACTS-Based Stabilizers in a Multi-Machine Power System Using PSO ». International Journal of Swarm Intelligence Research 1, n^o 3 (juillet 2010) : 1–18. http://dx.doi.org/10.4018/jsir.2010070101.

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This paper investigates the enhancement of power system stability via coordinated design of Power System Stabilizers (PSSs), Thyristor Controlled Series Capacitor (TCSC)-based stabilizer, and Static Var Compensator (SVC)-based stabilizer in a multi-machine power system. The design problem of the proposed stabilizers is formulated as an optimization problem. Using the developed linearized power system model, the particle swarm optimization (PSO) algorithm is employed to search for optimal stabilizer settings that maximize the minimum damping ratio of all system oscillating modes. The proposed stabilizers are evaluated on a two-area weakly-connected multi-machine power system with unstable interarea oscillation mode. The nonlinear simulation results and eigenvalue analysis show the effectiveness of the proposed coordinated stabilizers in damping low frequency power system oscillations and enhancing the system stability.

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Narasimha Rao, D., et V. Saritha. « Power System Oscillation Damping Using New Facts Device ». International Journal of Electrical and Computer Engineering (IJECE) 5, n^o 2 (1 avril 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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Lu, Chao, Jingyi Zhang, Xinran Zhang et Yi Zhao. « Wide-area Oscillation Identification and Damping Control in Power Systems ». Foundations and Trends® in Electric Energy Systems 2, n^o 2 (2018) : 133–97. http://dx.doi.org/10.1561/3100000003.

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Armansyah, Ferdi, Naoto Yorino et Hiroshi Sasaki. « POWER SYSTEM OSCILLATION DAMPING CONTROL BY ROBUST SVC SUPPLEMENTARY CONTROLLER ». IEEJ Transactions on Power and Energy 120, n^o 8-9 (2000) : 1054–60. http://dx.doi.org/10.1541/ieejpes1990.120.8-9_1054.

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Chaudhuri, N. R., A. Domahidi, R. Majumder, B. Chaudhuri, P. Korba, S. Ray et K. Uhlen. « Wide-area power oscillation damping control in Nordic equivalent system ». IET Generation, Transmission & ; Distribution 4, n^o 10 (2010) : 1139. http://dx.doi.org/10.1049/iet-gtd.2009.0478.

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Xiao-ming, M., Z. Yao, G. Lin et W. Xiao-chen. « Coordinated Control of Interarea Oscillation in the China Southern Power Grid ». IEEE Transactions on Power Systems 21, n^o 2 (mai 2006) : 845–52. http://dx.doi.org/10.1109/tpwrs.2006.873116.

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Hao, Yafeng, Jun Liang, Kewen Wang, Guanglu Wu, Tibin Joseph et Ruijuan Sun. « Influence of Active Power Output and Control Parameters of Full-Converter Wind Farms on Sub-Synchronous Oscillation Characteristics in Weak Grids ». Energies 13, n^o 19 (7 octobre 2020) : 5225. http://dx.doi.org/10.3390/en13195225.

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Active power outputs of a wind farm connected to a weak power grid greatly affect the stability of grid-connected voltage source converter (VSC) systems. This paper studies the impact of active power outputs and control parameters on the subsynchronous oscillation characteristics of full-converter wind farms connected weak power grids. Eigenvalue and participation factor analysis was performed to identify the dominant oscillation modes of the system under consideration. The impact of active power output and control parameters on the damping characteristics of subsynchronous oscillation is analysed with the eigenvalue method. The analysis shows that when the phase-locked loop (PLL) proportional gain is high, the subsynchronous oscillation damping characteristics are worsened as the active power output increases. On the contrary, when the PLL proportional gain is small, the subsynchronous oscillation damping characteristics are improved as the active power output increases. By adjusting the control parameters in the PLL and DC link voltage controllers, system stability can be improved. Time-domain results verify the analysis and the findings.

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Kamis, Zalina, Mohd Ruddin Ab. Ghani, Muhammad Nizam Kamaruddin et Hairol Nizam Mohd Shah. « Fuzzy controlled SVC for power system damping ». Indonesian Journal of Electrical Engineering and Computer Science 18, n^o 3 (1 juin 2020) : 1673. http://dx.doi.org/10.11591/ijeecs.v18.i3.pp1673-1678.

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This paper presents the ability of the fuzzy logic-based stabilizer used to generate the supplementary voltage control signal of the SVC to improve the damping of the inter-area mode oscillation in the power system. The base system is symmetrical, consisting of two identical areas connected by a relatively weak tie line. The SVC is chosen to be installed at the tie line midpoint. The active power of the local line will be used as an input signal for the stabilizer. The additional signal is calculated using fuzzy membership function to determine the quantity of reactive power supplied absorbed by SVC. The system oscillation is indicated by a 3-phase-to-ground short circuit occurring at 0.2s of the simulation and subsequently clearing after 100ms. Simulation with the sample power system shows that when subjected to a disturbance, fuzzy logic-based SVC stabilizer provides good damping in inter-area mode oscillation for the system. The effectiveness of the stabilizer applied with and without PSS will also be investigated.

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Zhu, Ya Qing, Min Zhong, Yu Jia Ma, Feng Ping Pan, Ling Ling Shi et Zhi Qiang Pang. « Research on the Relationship between Speed Control System and Electromechanical Oscillations ». Applied Mechanics and Materials 710 (janvier 2015) : 47–52. http://dx.doi.org/10.4028/www.scientific.net/amm.710.47.

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The system damping of electric power systems is influenced by factors of many aspects. In this paper, we analyzed the impact of speed control system on the damping of the whole system in consideration of the Pole-Zero Analysis. The result shows that simple speed control would damp the oscillation, while the power-frequency control would excite the oscillation. Furthermore, the effect of steam turbine response rate on the system damping is analyzed. The time constant of hydraulic servo-motor would determine the response rate of the steam turbine, and as a result, an inflection point exists on the curve which describes the relationship between hydraulic servo-motor time constant and system damping. The result demonstrates that the characteristics of system damping can be used in parameter debugging of steam turbine.

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Mohamed, Tarek Hassan, Abdel-Moamen Mohammed Abdel-Rahim, Ahmed Abd-Eltawwab Hassan et Takashi Hiyama. « Wide-area Power System Oscillation Damping using Model Predictive Control Technique ». IEEJ Transactions on Power and Energy 131, n^o 7 (2011) : 536–41. http://dx.doi.org/10.1541/ieejpes.131.536.

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Kumkratug. « STATCOM Stabilizer based on Fuzzy Logic Control for Damping Power Oscillation ». American Journal of Applied Sciences 8, n^o 10 (1 octobre 2011) : 1041–44. http://dx.doi.org/10.3844/ajassp.2011.1041.1044.

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Modi, Nilesh, et Tapan K. Saha. « Application of extremum seeking control to design power oscillation damping controller ». Electric Power Systems Research 101 (août 2013) : 49–55. http://dx.doi.org/10.1016/j.epsr.2013.03.012.

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Anarkooli, M. Yousefi, et H. Afrakhteh. « Improvement Model Damping Low Frequency Oscillations Presence UPFC by Cuckoo Optimization Algorithm ». Indonesian Journal of Electrical Engineering and Computer Science 3, n^o 1 (1 juillet 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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Popov, A. Yu. « Minimum of power consumption in the problem of oscillation damping ». Automation and Remote Control 70, n^o 4 (avril 2009) : 721–27. http://dx.doi.org/10.1134/s0005117909040183.

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Deng, Tong Tian, Jia Sheng Wang, Xiao Jun Li, Xi Tian Wang, Jin Fu Liu, Xin Tong Ma, Yue Song Dai et Yu Feng Guo. « The Analysis on the Effect of Speed Regulating System on Low Frequency Oscillation ». Applied Mechanics and Materials 737 (mars 2015) : 220–25. http://dx.doi.org/10.4028/www.scientific.net/amm.737.220.

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With the strengthening of interconnected power grid connection, interval oscillation mode damping continue to improve, interval power oscillation accidents still occur, however, the negative damping mechanism of the classic cannot be satisfactorily explain these phenomena, this paper provides the researches forced oscillation mechanism of the low frequency oscillation, the speed control system is likely to form the forced oscillation source, speed regulation system and low frequency oscillation formed an adverse coupling effect. In this paper, based on the mechanism of their method, speed control system are analyzed, the effect of various parameters on the low frequency oscillation in order to avoid speed regulation system to participate in the low frequency oscillation provides technical support.

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Abdillah, Muhammad, Teguh Aryo Nugroho et Herlambang Setiadi. « LQR Tuning Using AIS for Frequency Oscillation Damping ». IJITEE (International Journal of Information Technology and Electrical Engineering) 3, n^o 4 (24 mars 2020) : 112. http://dx.doi.org/10.22146/ijitee.51192.

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Commonly, primary control, i.e. governor, in the generation unit had been employed to stabilize the change of frequency due to the change of electrical load during system operation. But, the drawback of the primary control was it could not return the frequency to its nominal value when the disturbance was occurred. Thus, the aim of the primary control was only stabilizing the frequency to reach its new value after there were load changes. Therefore, the LQR control is employed as a supplementary control called Load Frequency Control (LFC) to restore and keep the frequency on its nominal value after load changes occurred on the power system grid. However, since the LQR control parameters were commonly adjusted based on classical or Trial-Error Method (TEM), it was incapable of obtaining good dynamic performance for a wide range of operating conditions and various load change scenarios. To overcome this problem, this paper proposed an Artificial Immune System (AIS) via clonal selection to automatically adjust the weighting matrices, Q and R, of LQR related to various system operating conditions changes. The efficacy of the proposed control scheme was tested on a two-area power system network. The obtained simulation results have shown that the proposed method could reduce the settling time and the overshoot of frequency oscillation, which is better than conventional LQR optimal control and without LQR optimal control.

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Xu, Shiyun, Huadong Sun, Baiqing Li, Guangquan Bu, Jun Yi, Jian Zhang, Bing Zhao et Zhanming Chen. « Wide-Area Robust Decentralized Coordinated Control of HVDC Power System Based on Polytopic System Theory ». Mathematical Problems in Engineering 2015 (2015) : 1–9. http://dx.doi.org/10.1155/2015/510216.

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The present study proposes a hierarchical wide-area decentralized coordinated control framework for HVDC power system that is robust to multiple operating conditions. The upper level wide-area coordinated controller is designed in the form of dynamic output feedback control that coordinates the lower level HVDC supplementary controller, PSS, and SVC. In order to enhance the robustness of the designed controller under various operating conditions, the polytopic model is introduced such that the closed-loop control system can be operated under strong damping mode in virtue of the stability criterion based on damping ratio. Simulation results demonstrate that the proposed controller design algorithm is capable of enhancing the system damping over four different conditions.

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Ilango, G. Saravana, C. Nagamani, A. V. S. S. R. Sai et D. Aravindan. « Control algorithms for control of real and reactive power flows and power oscillation damping using UPFC ». Electric Power Systems Research 79, n^o 4 (avril 2009) : 595–605. http://dx.doi.org/10.1016/j.epsr.2008.08.010.

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Du, Chaofan, Lei Zhang, Yuanhui Tang, Jiahao Zhu et Kaifeng Wang. « An Improved Adaptive Passive Coordinated Control for Generator Excitation and STATCOM ». Mathematical Problems in Engineering 2021 (2 août 2021) : 1–12. http://dx.doi.org/10.1155/2021/6674542.

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An improved adaptive backstepping passive coordinated control strategy is proposed to deal with the uncertainty of damping coefficient and mechanical power and external disturbance on the system stability. A nonlinear coordinated controller of generator excitation and STATCOM (static synchronous compensator) is designed to improve its adaptability. The adaptive estimation laws of damping coefficient and mechanical power are designed by using I&I (immersion and invariance) adaptive control to improve the adaptive ability of the controller. Based on the backstepping recursive method, the control law of STATCOM is designed and combines the passivity theory, thus acquiring the control law of generator excitation. In the backstepping design, the derivative of the virtual control input and external disturbance are considered to be uncertain, and the nonlinear damping algorithm is introduced to reduce the “calculation explosion.” Simulation results show that the designed controller improves the stability of the power system and shows strong adaptability and robustness.

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Duan, Zhi, Hai Bao et Hong Shen. « Impacts of TCSC and FSC on the Power-Angle ». Advanced Materials Research 614-615 (décembre 2012) : 1484–88. http://dx.doi.org/10.4028/www.scientific.net/amr.614-615.1484.

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The Characteristics of FSC (Fixed Series Compensation) and TCSC (Thyristor Controlled Series Capacitor) damping power-angle oscillation and increasing the limit of power transmission were analyzed. FSC can damp the power-angle in a certain extent. Based on the linear control combined with Bang-bang control strategy, TCSC can damp power-angle effectively. In the cases of only FSC, only TCSC and their combinations, simulation results demonstrate that TCSC is more effective than FSC in damping power-angle oscillation. A conclusion is made that taking effect and cost into consideration, TCSC and FSC in a certain percentage is appropriate.

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., Shubi Sharda. « EFFICIENT POWER OSCILLATION DAMPING CONTROL BY ADAPTIVE NEURO FUZZY CONTROLLER BASED POWER SYSTEM STABILIZER ». International Journal of Research in Engineering and Technology 05, n^o 09 (25 septembre 2016) : 101–5. http://dx.doi.org/10.15623/ijret.2016.0509015.

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Liu, Cheng, Guowei Cai, Deyou Yang, Zhenglong Sun et 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, n^o 1 (30 septembre 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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