快速动态响应同步调相机转子引线断裂故障分析  

Fault Analysis of Rotor Lead Wire Breakage of Fast Dynamic Response Synchronous Condenser

作　　者：王庆 郭贤珊 黄金军 刘超 李明 韩晋思 李斯特 曹志伟 WANG Qing;GUO Xianshan;HUANG Jinjun;LIU Chao;LI Ming;HAN Jinsi;LI Site;CAO Zhiwei(State Grid Corporation of China,Xicheng District,Beijing 100031,China;DC Technical Center of State Grid Corporation of China,Xicheng District,Beijing 100052,China;State Grid East Inner Mongolia Electric Power Supply Co.,Ltd.,Hohhot 010010,Inner Mongolia Autonomous Region,China;State Grid Shandong Electric Power Research Institute,Jinan 250003,Shandong Province,China)

机构地区：[1]国家电网有限公司,北京市西城区100031 [2]国家电网有限公司直流技术中心,北京市西城区100052 [3]国网内蒙古东部电力有限公司,内蒙古自治区呼和浩特市010010 [4]国网山东省电力公司电力科学研究院,山东省济南市250003

出　　处：《电网技术》2024年第9期3957-3964,共8页Power System Technology

基　　金：国家电网有限公司总部科技项目(5500-202316163A-1-1-ZN)。

摘　　要：大型调相机的安全稳定运行关乎着电网电压的稳定、动态无功支撑水平和新能源消纳能力。该文研究了一起实际的调相机转子引线断裂故障,综合现场检查、返厂解体检查、试验分析、故障复现实验及其他换流站同型号调相机的检查结果,发现转子引线的设计及工艺方面存在缺陷,径向存在约4mm的悬空区域,加之长期运行磨损,最终导致调相机引线断裂烧熔触发跳机。从引线设计方案优化和实际运行工况着手,充分研判该型号调相机转子引线各段结构的可靠性及适用性,深入研究各种工况下的离心力及振动,保证引线及配套绝缘紧固连接,论证得出治理方案,为在运工程及后续新建机组安全可靠性奠定基础。The synchronous condenser concerns grid voltage stability,dynamic reactive power support ability,and new energy consumption.Based on a ground fault case of the condenser rotor,through on-site inspection,disassembly inspection within the manufacturing plant,test analysis,fault recurrence experiment,and the inspection of condensers of the same model in other converter stations,it is found that there is a 4mm suspension area in the radial direction due to unreasonable design and defects in the craftsmanship of the rotor lead wire,in addition,long-term running wear and tear ultimately leads to the lead wire breakage and melting triggering the condenser trip.Fully evaluating the reliability and applicability of each section of the rotor lead wire structure of this type of condenser and fully considering the centrifugal force and vibration under all operating conditions to ensure the tight connection of the lead wire and supporting insulation,the solution is proposed,which lays the foundation for the safety and reliability of the condensers in operation and to be manufactured.

关 键 词：同步调相机 转子引线断裂 一点接地 

分 类 号：TM721[电气工程—电力系统及自动化]