西北送端大电网频率特性试验方法
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摘要
基于西北送端大电网频率安全面临的风险,提出了西北送端大电网频率特性试验方法。该方法利用逐步增减网内水电机组出力的方式产生斜坡式频率扰动,通过电网频率响应全过程分析,实测西北电网频率静态全特性。同时,利用打跳网内单元接线内2台大型水电机组的方式制造电网实际频率大阶跃扰动,实测西北全网频率动态特性,检验了网内常规电源机组一次调频动作性能。试验结果表明,所提出的送端大电网频率静态测试方法切实可行。
Based on the risk of frequency security of the northwest sending-end power grid,a test method for the frequency characteristics of the northwest sending-end power grid is presented.The frequency ramp disturbance is generated by gradually increasing and decreasing the output of the hydropower generating units in the network.Through the analysis of the frequency response of the power grid,the whole frequency static characteristics of the northwest sending-end power grid are measured.At the same time,the actual frequency large-step disturbance is made by the trip of two large-scale hydropower units in the network.The dynamic characteristics of the whole northwest network are measured and the performance of the primary frequency regulation of the conventional power unit is tested.The practical application shows the feasibility of the proposed method.
Based on the risk of frequency security of the northwest sending-end power grid,a test method for the frequency characteristics of the northwest sending-end power grid is presented.The frequency ramp disturbance is generated by gradually increasing and decreasing the output of the hydropower generating units in the network.Through the analysis of the frequency response of the power grid,the whole frequency static characteristics of the northwest sending-end power grid are measured.At the same time,the actual frequency large-step disturbance is made by the trip of two large-scale hydropower units in the network.The dynamic characteristics of the whole northwest network are measured and the performance of the primary frequency regulation of the conventional power unit is tested.The practical application shows the feasibility of the proposed method.
引文
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[17]贺元康,杨楠,江国琪,等.提升西北电网水(火)电机组一次调频性能的措施[J].电网与清洁能源,2011,27(8):56-59.HE Yuankang,YANG Nan,JIANG Guoqi,et al.Measures to improve the primary frequency regulation performance of hydro-thermal generating units in northwest power grid[J].Advances of Power System&Hydroelectric Engineering,2011,27(8):56-59.
[18]何常胜,董鸿魁,翟鹏,等.水电机组一次调频与AGC典型控制策略的工程分析及优化[J].电力系统自动化,2015,39(3):146-151.DOI:10.7500/AEPS20140208003.HE Changsheng,DONG Hongkui,ZHAI Peng,et al.Engineering analysis and optimization on typical control strategy of primary frequency modulation and automatic generation control of hydropower units[J].Automation of Electric Power Systems,2015,39(3):146-151.DOI:10.7500/AEPS20140208003.
[2]李明节.大规模特高压交直流混联电网特性分析与运行控制[J].电网技术,2016,40(4):985-999.LI Mingjie.Characteristic analysis and operational control of large-scale hybrid UHV AC/DC power grids[J].Power System Technology,2016,40(4):985-999.
[3]赵强,张丽,王琦,等.系统负荷频率特性对电网频率稳定性的影响[J].电网技术,2011,35(3):69-73.ZHAO Qiang,ZHANG Li,WANG Qi,et al.Impact of load frequency characteristics on frequency stability of power systems[J].Power System Technology,2011,35(3):69-73.
[4]李卫东,常烨骙,陈兆庆,等.区域控制偏差的动态内涵[J].电力系统自动化,2016,40(24):146-150.DOI:10.7500/AEPS20160406001.LI Weidong,CHANG Yekui,CHEN Zhaoqing,et al.Dynamic contents of area control error[J].Automation of Electric Power Systems,2016,40(24):146-150.DOI:10.7500/AEPS20160406001.
[5]刘乐,魏晖,沈善德,等.系统自然频率特性系数的实测与计算[J].电力系统自动化,2001,25(5):49-52.LIU Le,WEI Hui,SHEN Shande,et al.Measurement and calculation of natural frequency characteristic coefficient[J].Automation of Electric Power Systems,2001,25(5):49-52.
[6]刘乐,刘娆,李卫东.自动发电控制中频率偏差系数确定方法的探讨[J].电力系统自动化,2006,30(6):42-47.LIU Le,LIU Rao,LI Weidong.Probe into frequency bias coefficient setting in automatic generation control[J].Automation of Electric Power Systems,2006,30(6):42-47.
[7]文丽,王坚,陈明辉,等.三段式频率偏差系数及其在互联电网调频中的应用[J].电力系统自动化,2010,34(19):59-63.WEN Li,WANG Jian,CHEN Minghui,et al.Three-stage frequency bias coefficient and its application in frequency control of interconnected power system[J].Automation of Electric Power Systems,2010,34(19):59-63.
[8]聂春元,李铠.2009年华中电网统调机组一次调频试验分析[J].华中电力,2009,22(6):23-26.NIE Chunyuan,LI Kai.Primary frequency regulation analysis for generators of central China power grid in 2009[J].Central China Electric Power,2009,22(6):23-26.
[9]高林,戴义平,王江峰,等.机组一次调频参数指标在线估计方法[J].中国电机工程学报,2012,32(16):62-69.GAO Lin,DAI Yiping,WANG Jiangfeng,et al.An online estimation method of primary frequency regulation parameters of generation units[J].Proceedings of the CSEE,2012,32(16):62-69.
[10]金娜,刘文颖,曹银利,等.大容量机组一次调频参数对电网频率特性的影响[J].电力系统保护与控制,2012,40(1):91-95.JIN Na,LIU Wenying,CAO Yinli,et al.Influence on the grid frequency characteristic by the parameters of primary frequency modulation of large capacity generator units[J].Power System Protection and Control,2012,40(1):91-95.
[11]于达仁,郭钰锋.电网一次调频能力的在线估计[J].中国电机工程学报,2004,24(3):72-76.YU Daren,GUO Yufeng.The online estimate of primary frequency control ability in electric power system[J].Central China Electric Power,2004,24(3):72-76.
[12]张斌.电力系统调频与自动发电控制[M].北京:中国电力出版社,2008.
[13]国家电网公司.国调中心关于印发《联络线偏差控制技术规范(试行)》的通知(调计[2014]149号)[Z].2014.
[14]王合桢,李向荣,陈栋新.电网频率特性及负荷反馈df/dt的实测分析[J].电网技术,1995,19(12):43-47.WANG Hezhen,LI Xiangrong,CHEN Dongxin.Measurement and analysis for frequency characteristics and load frequency feedback df/dt[J].Power System Technology,1995,19(12):43-47.
[15]西北能源监管局.西北区域并网发电厂辅助服务管理实施细则[S].2011.
[16]任冲,孙骁强,褚云龙.西北电网一次调频评价指标研究[J].电网与清洁能源,2011,27(9):36-40.REN Chong,SUN Xiaoqiang,CHU Yunlong.Assessment index of primary frequency regulation in northwest power grid[J].Advances of Power System&Hydroelectric Engineering,2011,27(9):36-40.
[17]贺元康,杨楠,江国琪,等.提升西北电网水(火)电机组一次调频性能的措施[J].电网与清洁能源,2011,27(8):56-59.HE Yuankang,YANG Nan,JIANG Guoqi,et al.Measures to improve the primary frequency regulation performance of hydro-thermal generating units in northwest power grid[J].Advances of Power System&Hydroelectric Engineering,2011,27(8):56-59.
[18]何常胜,董鸿魁,翟鹏,等.水电机组一次调频与AGC典型控制策略的工程分析及优化[J].电力系统自动化,2015,39(3):146-151.DOI:10.7500/AEPS20140208003.HE Changsheng,DONG Hongkui,ZHAI Peng,et al.Engineering analysis and optimization on typical control strategy of primary frequency modulation and automatic generation control of hydropower units[J].Automation of Electric Power Systems,2015,39(3):146-151.DOI:10.7500/AEPS20140208003.
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