提高电力系统暂态稳定性的TCSC控制策略
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摘要
可控串联补偿(TCSC)对远距离输电系统的暂态稳定性的影响较大。为保证系统在大扰动后发电机首摆及后续振荡保持稳定,本文结合等面积法则和单摆过程中能量守恒原理,提出了新的TCSC稳定控制策略:在故障清除后TCSC迅速对线路提供强补;而在后续振荡中的每个振荡周期内使TCSC在强补和闭锁状态间切换;由此达到提高首摆的暂态稳定裕度和迅速阻尼振荡的效果。在单机无穷大系统上进行了仿真,结果验证了该控制策略的有效性和优越性。
Thyristor controlled series compensation(TCSC)has a largerimpact on the transient stability of long-distance power transmission systems.To ensure that the generator remains stable in the first and the following swings after a large disturbance,a new TCSC stability control strategy is proposed with the combination of equal area criterion and the energy conservation principle during one single swing.This method can not only improve the transient stability margin of the first swing by compensation after the fault clearance,but also damp oscillations in the following swings quickly by making TCSC switch between on and off states.The simulation results of a one-machine infinitybus system show the effectiveness and superiority of the proposed control strategy.
Thyristor controlled series compensation(TCSC)has a largerimpact on the transient stability of long-distance power transmission systems.To ensure that the generator remains stable in the first and the following swings after a large disturbance,a new TCSC stability control strategy is proposed with the combination of equal area criterion and the energy conservation principle during one single swing.This method can not only improve the transient stability margin of the first swing by compensation after the fault clearance,but also damp oscillations in the following swings quickly by making TCSC switch between on and off states.The simulation results of a one-machine infinitybus system show the effectiveness and superiority of the proposed control strategy.
引文
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[15]柯宁,苏建设,陈陈(Ke Ning,Su Jianshe,Chen Chen).TCSC与SVC用于提高输电系统暂态稳定性的仿真研究(Simulation study of TCSC and SVC to improve transient stability of transmission system)[J].电力系统自动化(Automation of Electric Power Systems),2004,28(1):20-23,40.
[16]汪冰,解大,董惠康,等(Wang Bing,Xie Da,Dong Huikang,et al). TCSC系统暂态稳定控制的动态模拟实验研究(TCSC dynamic system simulation test with transient stability control)[J].电力系统自动化(Automation of Electric Power Systems),2001,27(18):33-36.
[17]罗远翔,杨仁刚,刘铖,等(Luo Yuanxiang,Yang Rengang,Liu Cheng,et al). TCSC提高大容量风电接入系统的稳定性及控制策略(Control strategy of TCSC for stability improvement in power systems integrated with large scale wind farms)[J].电测与仪表(Electrical Measurement&Instrumentation),2014,51(4):35-39.
[18]苏建设,柯宁,陈陈(Su Jianshe,Ke Ning,Chen Chen).提高暂态稳定的励磁与FACTS协调策略设计(Coordinated design of generator excitation and FACTS for transient stability enhancement)[J].中国电机工程学报(Proceed-ings of the CSEE),2003,23(9):6-10.
[19]吴为,汤涌,孙华东(Wu Wei,Tang Yong,Sun Huadong).基于系统加速能量的切机控制措施量化研究(Quanti-tative research of generation capacity tripped based on ac-celeration energy of power system)[J].中国电机工程学报(Proceedings of the CSEE),2014,34(34):6134-6140.
[20]卢锦玲,徐超,程晓悦,等(Lu Jinling,Xu Chao,ChengXiaoyue,et al).基于DFIG的变速风电机组对系统暂态稳定影响(Study on transient stability of power system in-tegrated with variable speed wind turbines based onDIFG)[J].电力系统及其自动化学报(Proceedings of theCSU-EPSA),2016,28(1):68-73.
[2] Gronquist J F,Sethares W A,Alvarado F L,et al. Power oscillation damping control strategies for FACTS devices using locally measurable quantities[J]. IEEE Trans on Power Systems,1995,10(3):1598-1605.
[3] Zhou X,Liang J. Overview of control schemes for TCSC to enhance the stability of power systems[J]. IEE Proceedings-Generation,Transmission and Distribution,1999,146(2):125-130.
[4]宋晓通,戴拥民,武守远,等(Song Xiaotong,Dai Yongmin,Wu Shouyuan,et al).提升台远-塔中-且末通道输送能力的综合方案(Integrated solution for transfer capability enhancement of Taiyuan-Tazhong-Qiemo channel)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2014,26(9):85-90.
[5]王延鹏,蔡兴国(Wang Yanpeng,Cai Xingguo).确定TCSC安装位置和安装容量的方法(Approach to determine the optimal location and parameter setting of TCSC)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2010,22(2):48-53.
[6]肖利武,祁桂刚,黎灿兵,等(Xiao Liwu,Qi Guigang,Li Canbing,et al).多可控串补自适应协调控制设计(Design of adaptive coordination control of multiple TCSC)[J].中国电力(Electric Power),2015,48(4):90-94.
[7]韩光,童陆园,葛俊,等(Han Guang,Tong Luyuan,Ge Jun,et al). TCSC抑制次同步谐振的机理分析(Mechanism analysis of mitigating sub-synchronous resonance by TCSC)[J].电力系统自动化(Automation of Electric Power Systems),2002,26(2):18-21,44.
[8]田旭,姜齐荣,谢小荣(Tian Xu,Jiang Qirong,Xie Xiaorong).电力系统次同步谐振抑制措施综述(Review of measures to mitigate sub-synchronous resonance in power systems)[J].电网技术(Power System Technology),2010,34(12):74-79.
[9]杜宁,刘娟楠,项祖涛,等(Du Ning,Liu Juannan,Xiang Zutao,et al).新疆与西北联网第二通道应用串补的次同步谐振风险及对策研究(Research on problems and corresponding measures of sub-synchronous resonance caused by application of series compensation in the second interconnection between Xinjiang Grid and Northwest China Grid)[J].电网与清洁能源(Power System and Clean Energy),2012,28(9):1-5,12.
[10]徐桂芝,武守远,王宇红,等(Xu Guizhi,Wu Shouyuan,Wang Yuhong,et al).用TCSC装置抑制电力系统低频振荡的研究(Damping low frequency oscillation in power system by TCSC)[J].电网技术(Power System Technology),2004,28(15):45-47,56.
[11]吴艳娟(Wu Yanjuan). FACTS在含大型风电场的电力系统稳定控制中的应用研究(Application Research of FACTS in Stability Control of Power System Integrated with Large-scale Wind Farm)[D].天津:天津大学电气与自动化工程学院(Tianjin:School of Electrical Engineering and Automation,Tianjin University),2013.
[12]罗远翔,杨仁刚,蔡国伟,等(Luo Yuanxiang,Yang Rengang,Cai Guowei,et al).提高系统稳定性的可控串联补偿控制策略(Control strategy for the thyristor controlled series compensation for improving system stability)[J].哈尔滨工程大学学报(Journal of Harbin Engineering University),2014,35(4):488-492.
[13]杨培宏,刘文颖,魏毅立,等(Yang Peihong,Liu Wenying,Wei Yili,et al).发电机励磁与TCSC的非线性协调控制(Nonlinear coordinated control of thyristor controlled series compensation with excitation system of generator)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2014,26(10):51-55.
[14]郑明,王玲(Zheng Ming,Wang Ling). TCSC增强电力系统稳定性的控制策略研究(Control strategies of enhancing stability of interconnected power system with TCSC)[J].电网与清洁能源(Power System and Clean Energy),2011,27(3):25-28.
[15]柯宁,苏建设,陈陈(Ke Ning,Su Jianshe,Chen Chen).TCSC与SVC用于提高输电系统暂态稳定性的仿真研究(Simulation study of TCSC and SVC to improve transient stability of transmission system)[J].电力系统自动化(Automation of Electric Power Systems),2004,28(1):20-23,40.
[16]汪冰,解大,董惠康,等(Wang Bing,Xie Da,Dong Huikang,et al). TCSC系统暂态稳定控制的动态模拟实验研究(TCSC dynamic system simulation test with transient stability control)[J].电力系统自动化(Automation of Electric Power Systems),2001,27(18):33-36.
[17]罗远翔,杨仁刚,刘铖,等(Luo Yuanxiang,Yang Rengang,Liu Cheng,et al). TCSC提高大容量风电接入系统的稳定性及控制策略(Control strategy of TCSC for stability improvement in power systems integrated with large scale wind farms)[J].电测与仪表(Electrical Measurement&Instrumentation),2014,51(4):35-39.
[18]苏建设,柯宁,陈陈(Su Jianshe,Ke Ning,Chen Chen).提高暂态稳定的励磁与FACTS协调策略设计(Coordinated design of generator excitation and FACTS for transient stability enhancement)[J].中国电机工程学报(Proceed-ings of the CSEE),2003,23(9):6-10.
[19]吴为,汤涌,孙华东(Wu Wei,Tang Yong,Sun Huadong).基于系统加速能量的切机控制措施量化研究(Quanti-tative research of generation capacity tripped based on ac-celeration energy of power system)[J].中国电机工程学报(Proceedings of the CSEE),2014,34(34):6134-6140.
[20]卢锦玲,徐超,程晓悦,等(Lu Jinling,Xu Chao,ChengXiaoyue,et al).基于DFIG的变速风电机组对系统暂态稳定影响(Study on transient stability of power system in-tegrated with variable speed wind turbines based onDIFG)[J].电力系统及其自动化学报(Proceedings of theCSU-EPSA),2016,28(1):68-73.