【摘要】 大亚湾核电站在黑启动、正常启动以及大修倒闸过程中,存在分别从400kV系统和500kV系统通过联络变压器向对侧主变压器充电的情况,因设计时没有考虑此种启动方式,因此可能对联络变压器和主变压器造成较大冲击或不良影响。为此,采用电磁暂态程序(EMTP)仿真计算,研究联络变压器充主变压器励磁涌流和操作过电压水平,分析联络变压器带主变压器启动对联络变压器、主变压器以及继电保护的影响。更多还原

【Abstract】 During black start,regular start and heavy repair of Daya Bay Nuclear Power Station,the main transformer in 400 kV or 500 kV system may be charged by connecting transformer,which could strike the connecting transformer and the main transformer.By simulated calculation of EMTP(electro magnetic transients program),this paper studies the magnetizing inrush current and operating overvoltage during the connecting transformer charging the main transformer,then discusses the influence on the transformers and relay protection.更多还原