500 kV变电站35 kV站用变压器串联电抗器阻抗保护优化  

Impedance Protection Optimization of Series Reactors of 35 kV Substation Transformers in 500 kV Substations

作　　者：陈永明 李静 汤大海 马骏毅 孙东杰 刘昶 王中浪 CHEN Yongming;LI Jing;TANG Dahai;MA Junyi;SUN Dongjie;LIU Chang;WANG Zhonglang(State Grid Zhenjiang Power Supply Company,Zhenjiang 212001,China;NARI Technology Co.,Ltd.,Nanjing 211106,China)

机构地区：[1]国网江苏省电力有限公司镇江供电分公司,江苏镇江212001 [2]国电南瑞科技股份有限公司,江苏南京211106

出　　处：《山东电力高等专科学校学报》2022年第2期1-7,24,共8页Journal of Shandong Electric Power College

基　　金：江苏省电力公司2020年科技项目(项目编号:J2020151)。

摘　　要：针对目前500 kV变电站35 kV站用变压器串联电抗器保护不能满足有关规程要求的问题,提出了在主变压器35 kV侧后备保护中增设阻抗保护或单独配置阻抗保护的方案,研制了该串联电抗器阻抗保护装置,进行了动模试验,并接入电网试运行,结果表明该装置可将串联电抗器保护的灵敏度提高到1.5以上。In allusion to the problem that the current protection of series reactors of 35 kv substation transformers in 500 kv substations cannot meet the requirements of relevant regulations,the scheme of adding impedance protection in the backup protection of 35 kV side of the main transformer or configuring impedance protection separately is put forward.An impedance protection device of the series reactors is developed,the dynamic simulation test is carried out and the device is connected to the power grid for pilot operation.The results show that the device can increase the sensitivity of series reactor protection to above 1.5.

关 键 词：变电站 站用变压器 串联电抗器 阻抗保护 

分 类 号：TM773[电气工程—电力系统及自动化]