特高压交流单回试验线段雨天电晕损失研究  

Analysis of Corona Loss of UHV AC Single Circuit Test Line Under Rain

作　　者：刘云鹏[1] 尤少华[1] 万启发[2] 陈维江[3] 律方成[1] 陈勇[2] 

机构地区：[1]华北电力大学电气与电子工程学院,河北省保定市071003 [2]国网电力科学研究院,湖北省武汉市430074 [3]国家电网公司特高压建设部,北京市西城区100031

出　　处：《中国电机工程学报》2010年第19期114-119,共6页Proceedings of the CSEE

基　　金：国家自然科学基金项目(50707007);“十一五”国家科技支撑计划重大项目(2006BAA02A04)~~

摘　　要：输电线路电晕损失研究是中国1000kV特高压输变电工程的主要研究内容之一,输电线路电晕损失和诸多气象因素有关,其中降雨率对电晕损失影响非常明显。对特高压交流单回试验线段电晕损失进行监测,并在人工淋雨条件下测量特高压电晕笼导线电晕损失,对2种试验方法测得结果进行等效对比分析,验证了其等效性和试验线段电晕损失监测结果的正确性。当降雨率增大到一定程度后(大雨条件下),电晕损失值增加逐渐趋于饱和。获得了小雨、中雨、大雨条件下中国特高压交流单回输电线路用8×LGJ–500/35分裂导线电晕损失的实测结果,为衡量特高压交流单回输电线路的运行经济性提供了参考依据。Test and analysis of corona loss of transmission line is one of the main research contents concerning 1 000 kV UHV transmission and transformation project. The corona loss of transmission line is influenced by many factors related with weather in which rainfall intensity effects corona loss most remarkably. By monitoring on the corona loss of UHV AC single circuit test line and measuring that of conductor in UHV corona cage under artificial rain, the equivalence comparison between two test methods and the effectiveness of the latter method were verified. Test results show that corona loss tends to saturate gradually under heavy rain. The corona loss measurement results of 8×LGJ-500/35 bundle conductors, which are used in UHV AC single circuit transmission line, are obtained under light rain, moderate rain and heavy rain, and these test results can be taken as some reference for estimating the economic operation of UHV AC single circuit transmission line.

关 键 词：特高压单回试验线段 电晕损失 电晕笼 分裂导线 降雨率 

分 类 号：TM85[电气工程—高电压与绝缘技术]