高建瑞;李国杰;汪可友;张华;

• 1:电力传输与功率变换控制教育部重点实验室(上海交通大学)
• 2:国网四川省电力公司电力科学研究院

摘要(Abstract)：

近年来水电机组占比较大的电网发生了多起频率低于0.1Hz的超低频振荡案例。现有的研究分析假定发电机输出电磁功率由负荷频率特性决定,而忽略了实际系统中发电机和与之相连系统的电磁联系,电磁功率的阻尼性质也不够明确。针对此问题,分别基于单机和等值双机系统分析机械功率和电磁功率的阻尼特性。通过对云南超低频振荡的实际同步相量测量装置(phasor measurement unit,PMU)波形进行分析,推导出超低频振荡过程中水力发电机功角波动与频率波动相位基本相同,电磁功率振荡由功角波动产生。理论分析与仿真结果表明,该超低频振荡案例中水电机组具有足够的同步转矩,并不存在非振荡失稳的风险。

关键词(KeyWords)： 超低频振荡;阻尼转矩法;同步转矩;水电机组

Abstract:

Keywords:

基金项目(Foundation): 国家电网公司科技项目(52199717001K);; 国家自然科学基金项目(51477098)~~

作者(Author): 高建瑞;李国杰;汪可友;张华;

Email:

DOI: 10.13335/j.1000-3673.pst.2018.2375

参考文献(References)：

• [1] Gen?o?lu C,T?r O B,Güven N.Damping measures against low frequency inter area oscillations and solutions for Turkey ENTSO-E CESA interconnection[C]//National Conference on Electrical,Electronics and Computer Engineering.Bursa, Turkey:IEEE,2010:153-157.
• [2] Rimorov D,Kamwa I,Joos G.Quasi-Steady-State approach for analysis of frequency oscillations and damping controller design[J].IEEE Transactions on Power Systems,2016,31(4):3212-3220.
• [3]贺静波,张剑云,李明节,等.直流孤岛系统调速器稳定问题的频域分析与控制方法[J].中国电机工程学报,2013,33(16):137-143.He Jingbo,Zhang Jianyun,Li Mingjie,et al.An approach for analysis and control of governor stability in islanded HVDC sending system[J].Proceedings of the CSEE,2013,33(16):137-143(in Chinese).
• [4]张建新,刘春晓,陈亦平,等.异步联网方式下云南电网超低频振荡的抑制措施与试验[J].南方电网技术,2016,10(7):35-39.Zhang Jianxin,Liu Chunxiao,Chen Yiping,et al.Countermeasures and experiments on ultra-low frequency oscillation of Yunnan Power Grid in asynchronous interconnection mode[J]. Southern Power System Technology,2016,10(7):35-39(in Chinese).
• [5] Chen Gang,Tang Fan,Shi Huabo,et al.Optimization strategy of hydro-governors for eliminating ultra low frequency oscillations in hydro-dominant power systems[J].IEEE Journal of Emerging and Selected Topics in Power Electronics,2018,6(3):1086-1094.
• [6]路晓敏,陈磊,陈亦平,等.电力系统一次调频过程的超低频振荡分析[J].电力系统自动化,2017,41(16):64-70.Lu Xiaomin,Chen Lei,Chen Yiping,et al.Ultra-low-frequency oscillation of power system primary frequency regulation[J].Automation of Electric Power Systems,2017,41(16):64-70(in Chinese).
• [7]陈磊,路晓敏,陈亦平,等.多机系统超低频振荡分析与等值方法[J].电力系统自动化,2017,41(22):10-15.Chen Lei,Lu Xiaomin,Chen Yiping,et al.Analysis of ultra-lowfrequency oscillations in multi-machine system and equivalent method[J].Automation of Electric Power Systems,2017,41(22):10-15(in Chinese).
• [8] Mo Weike,Chen Yiping,Chen Haoyang,et al.Analysis and measures of ultra-low-frequency oscillations in a large-scale hydropower transmission System[J].IEEE Journal of Emerging and Selected Topics in Power Electronics,2018,6(3):1077-1085.
• [9] Wang Guoteng,Xu Zheng,Guo Xiangyang,et al.Mechanism analysis and suppression method of ultra-low-frequency oscillations caused by hydropower units[J].International Journal of Electrical Power&Energy Systems,2018(103):102-114.
• [10] Liu Ziquan,Yao Wei,Wen Jinyu,et al.Effect analysis of generator governor system and its frequency mode on inter-area oscillations in power systems[J].International Journal of Electrical Power&Energy Systems,2018(96):1-10.
• [11]刘春晓,张俊峰,陈亦平,等.异步联网方式下云南电网超低频振荡的机理分析与仿真[J].南方电网技术,2016,10(7):29-34.Liu Chunxiao,Zhang Junfeng,Chen Yiping,et al.Mechanism analysis and simulation on ultra-low frequency oscillation of Yunnan power grid in asynchronous interconnection mode[J].Southern Power System Technology,2016,10(7):29-34(in Chinese).
• [12]王官宏,于钊,张怡,等.电力系统超低频率振荡模式排查及分析[J].电网技术,2016,40(8):2324-2330.Wang Guanhong,Yu Zhao,Zhang Yi,et al.Troubleshooting and analysis of ultra-Low frequency oscillation mode in power system[J].Power System Technology,2016,40(8):2324-2330(in Chinese).
• [13]王歆,张怡,王官宏,等.高比例水电送出系统超低频振荡风险及影响因素分析[J].电网技术,2019,43(1):206-212.Wang Xin,Zhang Yi,Wang Guanhong,et al.Research on ultra-low frequency oscillation risk and influencing factors of high-ratio hydroelectric transmission system[J].Power System Technology,2019,43(1):206-212(in Chinese).
• [14]饶成骄,郭成,马宁宁,等.考虑水轮机水锤效应的电网频率变化的解析方法[J].电网技术,2018,42(6):1892-1898.Rao Chengjiao,Guo Cheng,Ma Ningning,et al.Analytical method of power grid frequency change considering water hammer effect of turbine[J].Power System Technology,2018,42(6):1892-1898(in Chinese).
• [15]邓伟,王德林,魏蒙希,等.水轮机调速器参数对电力系统超低频振荡的影响[J].电网技术,2019,43(4):1371-1377.Deng Wei,Wang Delin,Wei Mengxi,et al.Influencing mechanism study on turbine governor parameters upon ultra-low frequency oscillation of power system[J].Power System Technology,2019,43(4):1371-1377(in Chinese).
• [16]陈磊,路晓敏,陈亦平,等.利用暂态能量流的超低频振荡在线分析与紧急控制方法[J].电力系统自动化,2017,41(17):9-14.Chen Lei,Lu Xiaomin,Chen Yiping,et al.Online analysis and emergency control of ultra-low-frequency oscillations using transient energy flow[J].Automation of Electric Power Systems,2017,41(17):9-14(in Chinese).
• [17]王菲,刘建琴,韩丰,等.应用直流调制改善水电能源基地交流电网运行特性[J].电网技术,2017,41(12):3911-3916.Wang Fei,Liu Jianqin,Han Feng,et al.Application of DC modulation to improving operation characteristics of hydropower base grid[J].Power System Technology,2017,41(12):3911-3916(in Chinese).
• [18]陈刚,丁理杰,李旻,等.异步联网后西南电网安全稳定特性分析[J].电力系统保护与控制,2018,46(7):76-82.Chen Gang,Ding Lijie,Li Min,et al.Stability characteristics of southwest China power grid after asynchronous interconnection[J].Power System Protection and Control,2018,46(7):76-82(in Chinese).
• [19] Kunder P.Power system stability and control[M].北京:中国电力出版社,2001.
• [20]倪以信,陈寿孙,张宝霖.动态电力系统的理论和分析[M].北京:清华大学出版社,2002.