“9·19”锦苏直流双极闭锁事故华东电网频率特性分析及思考  

Analysis and Reflection on Frequency Characteristics of East China Grid After Bipolar Locking of “9·19” Jinping-Sunan DC Transmission Line

作　　者：李兆伟[1,2] 吴雪莲[1,2] 庄侃沁[3] 王亮[3] 缪源诚[3] 李碧君[1,2] 

机构地区：[1]南瑞集团公司(国网电力科学研究院),江苏省南京市211106 [2]国电南瑞科技股份有限公司,江苏省南京市211106 [3]国家电网公司华东分部,上海市200120

出　　处：《电力系统自动化》2017年第7期149-155,共7页Automation of Electric Power Systems

基　　金：国家电网公司科技项目"改善系统频率稳定性的跨区多直流功率紧急支援协控系统关键技术研究"~~

摘　　要：小负荷方式下系统的频率稳定形势日趋严峻。针对华东电网"9·19"事故,从负荷模型及调速器/原动机模型角度研究分析了影响华东电网频率响应特性的关键因素。基于实测数据,对华东电网负荷频率响应因子,机组的一次调频限幅、调差系数,以及锅炉主蒸汽压力模型相关参数进行了辨识,复现"9·19"事故的频率响应特性。根据辨识结果反映的问题提出了相关建议。The frequency security and stability situation in low load mode is worsening.The key factors which affect the frequency response are analyzed from the point of view of the load model,turbine-governors and drum boiler in the＂9·19＂incident.On the basis of measured values,the load frequency factor,the parameters of primary frequency modulation limit,frequency coefficient,and main steam pressure are identified.The results reflect the dynamic frequency trajectory of the＂9·19＂incident successfully.According to the results of reconstitution,relevant recommendations are put forward.

关 键 词：频率 调速器 主蒸汽压力 参数辨识 

分 类 号：TM712[电气工程—电力系统及自动化]