摘要
针对±800kV特高压灵州换流站换流变压器有载分接开关闭锁调档功能存在的问题,通过对过电流闭锁、-25℃低油温闭锁以及BCD模块导通特性不一致闭锁的有载分接开关调档风险进行具体分析,提出了灵州换流站换流变压器有载分接开关闭锁调档功能的优化方案。应用结果表明:有载分接开关调档功能优化后有效提高了直流系统的运行可靠性,可为后续直流输电工程换流变压器有载分接开关的运行、维护、设计提供参考。
Aiming at the problem of shifting function locking of on-load tap changer for convertor transformer in ±800 kV UHV Lingzhou Convertor Substation, analyzes the locking risk of on-load tap changer such as the over-current blocking,-25 ℃low oil temperature blocking and the BCD module conduction characteristics disaccord blocking, puts forward the optimization scheme about on-load tap changer shifting function locking for convertor transformer in Lingzhou Convertor Substation. The application result shows that the after on-load tap changer shifting function locking optimization,improve effectively the reliability of DC system, It can provide references for operation, maintenance and design of on-load tap changer of convertor transformer in the later DC transmission projects.
出处
《宁夏电力》
2017年第4期34-37,45,共5页
Ningxia Electric Power
