孙彦龙;班连庚;宋瑞华;项祖涛;杜宁;

• 1:中国电力科学研究院

摘要(Abstract)：

并列同型的多台汽轮机组通过带串补线路送出时可能发生次同步谐振(subsynchronous resonance,SSR)。出力不均衡时,各机组轴系扭振行为不一致,在幅值和相位上均有差别。以双机系统为例,对并列多机系统发生SSR时各机组轴系扭振行为的差异进行了研究。时域仿真结果表明,将各机组发电机转速均取作输入信号时,仅采用静止同步补偿器(static var compensator,STATCOM)便可抑制所有机组的轴系扭振,但是抑制速度缓慢;以网侧STATCOM为主、机侧附加励磁阻尼控制(supplementary excitation damping,SEDC)为辅的联合SSR抑制措施可以结合SEDC和STATCOM各自作为SSR抑制措施的优点,快速有效地抑制多机系统SSR。

关键词(KeyWords)： 多机系统;次同步谐振;附加励磁阻尼控制器;静止同步补偿器

Abstract:

Keywords:

基金项目(Foundation): 国家863高技术研究发展计划重大项目(2011AA05A119);; 国家电网公司大电网重大专项资助项目课题(SGCC-MPLG001-2012)~~

作者(Author): 孙彦龙;班连庚;宋瑞华;项祖涛;杜宁;

Email:

DOI: 10.13335/j.1000-3673.pst.2013.05.029

参考文献(References)：

• [1]刘世宇,谢小荣,王仲鸿.我国火电基地串补输电系统的次同步谐振问题[J].电网技术,2008,32(1):5-8.Liu Shiyu,Xie Xiaorong,Wang Zhonghong.SSR problem incompensated transmission system of thermal power bases inChina[J].Power System Technology,2008,32(1):5-8(in Chinese).
• [2]程时杰,曹一家,江全元.电力系统次同步振荡的理论与方法[M].北京:科学出版社,2008:68-96.
• [3]徐政,罗慧群,祝瑞金.电力系统次同步振荡问题的分析方法概述[J].电网技术,1999,23(6):36-39.Xu Zheng,Luo Huiqun,Zhu Ruijin.Review on methods of analysisfor subsynchronous oscillations of power systems[J].Power SystemTechnology,1999,23(6):36-39(in Chinese).
• [4]王忠军,王林川,谢小荣,等.一种综合频率扫描和复转矩系数的次同步谐振风险定量评估方法[J].电网技术,2011,35(7):101-105.Wang Zhongjun,Wang Linchuan,Xie Xiaorong,et al.A methodintegrating frequency scanning and complex torque coefficient toquantitatively evaluate subsynchronous resonance risk[J].PowerSystem Technology,2011,35(7):101-105(in Chinese).
• [5]田旭,姜齐荣,谢小荣.电力系统次同步谐振抑制措施综述[J].电网技术,2010,34(12):74-79.Tian Xu,Jiang Qirong,Xie Xiaorong.Review of measures to mitigateSubsynchronous resonance in power systems[J].Power SystemTechnology,2010,34(12):74-79(in Chinese).
• [6]Bowler C E J,Baker D H,Mincer N A,et al.Operation and test ofthe NAVAJO SSR protective equipment[J].IEEE Transactions onPower Apparatus and Systems,1978,97(4):1030-1035.
• [7]张帆,徐政.附加励磁阻尼控制抑制次同步谐振研究[J].电力系统自动化,2007,31(23):24-29.Zhang Fan,Xu Zheng.Studies on a supplementary excitationdamping controller for mitigating SSR[J].Automation of ElectricPower Systems,2007,31(23):24-29(in Chinese).
• [8]谢小荣,刘世宇,张树卿,等.附加励磁阻尼控制抑制多模态SSR的机理及其关键技术[J].电力系统自动化,2007,31(21):10-14.Xie Xiaorong,Liu Shiyu,Zhang Shuqing,et al.Basic principles andkey issues of depressing multi-mode SSR by supplementary excitationdamping control[J].Automation of Electric Power Systems,2007,31(21):10-14(in Chinese).
• [9]高洵,谢小荣,吴涛,等.大扰动下次同步谐振仿真分析的模型改进及应用[J].电网技术,2012,36(1):96-101.Gao Xun,Xie Xiaorong,Wu Tao,et al.The improved simulationmodel for transient study of subsynchronous resonance during largedisturbance and its engineering practice[J].Power SystemTechnology,2012,36(1):96-101(in Chinese).
• [10]Patil K V,Senthil J,Jiang J,et al.Application of STATCOM fordamping torsional oscillations in series compensated AC systems[J].IEEE Transactions on Energy Conversion,1998,13(3):237-243.
• [11]Padiyar K R,Prabhu N.Design and performance evaluation ofsubsynchronous damping controller with STATCOM[J].IEEETransactions on Power Delivery,2006,21(3):1398-1405.
• [12]周长春,徐政,王冠.多机电力系统扭振相互作用的研究综述[J].电网技术,2004,28(6):1-4.Zhou Changchun,Xu Zheng,Wang Guan.A survey on torsionalinteraction in multi-machine power grid[J].Power SystemTechnology,2004,28(6):1-4(in Chinese).
• [13]Jennings G D,Grad S A,Harley R G,et al.Subsynchrnousresonance of a power station with two identical generating units[J].IEEE Proceeding,1986,133(1):33-43.
• [14]Iravani M R.Torsional oscillations of unequally loaded parallelidentical turbine-generators[J].IEEE Transactions on Power Systems,1989,4(4):1514-1524.
• [15]IEEE Subsynchronous Resonance Working Group.Second benchmarkmodel for computer simulation of subsynchronous resonance[J].IEEETransactions on Power Apparatus and Systems,1985,104(5):1057-1066.
• [16]Agrawal B L,Farmer R G.Effective damping for SSR analysis ofparallel turbine-generators[J].IEEE Transactions on Power Systems,1988,3(4):1441-1448.
• [17]李天云,于海峰,任慧超,等.TLS—ESPRIT算法在次同步谐振在线监测中的应用[J].电力系统保护与控制,2011,39(12):37-41.Li Tianyun,Yu Haifeng,Ren Huichao,et al.Application ofTLS-ESPRIT algorithm in sub-synchronous resonance on-linemonitoring[J].Power System Protection and Control,2011,39(12):37-41(in Chinese).