几起非电量保护异常引起设备跳闸/闭锁的案例分析

Case Study of Transformer Equipment Tripping and Locking Due to Abnormal Non-Electricity Protection

通过对近年来几起典型主变压器、平波电抗器、换流变压器设备跳闸情况的介绍,分析了非电量保护异常引起交流变压器跳闸、直流平波电抗器或换流变压器闭锁的原因,从设备选型、安装调试、运行维护等角度提出了相应的防范措施,有利于指导今后变压器、换流变压器的设计选型、运维管理及反措改造工作。

This paper introduees several typical tripping cases of main transformer, flat wave reactor, anct con verter transformer equipment in China State Grid Corporation in recent years, and analyzes the AC transformer tripping, and DC smoothing reactor or converter transformer locking caused by abnormal non-electricity proteetion. Then the corresponding prevention measures are proposed in terms of equipment selection, installation and commissioning, operation and maintenance, etc. This research aims to provide guidance for the AC transformer and converter transformer selection and design, operation maintenance and management in the future.