防止因备自投动作引起变压器过载跳闸的分析及对策

备自投装置是保障电网供电可靠性的一项重要措施。目前,南京电网备自投的设置方案可以解决本站备自投动作导致站内主变过负荷问题,但不能从电网全局角度考虑备用电源侧过载情况。文中对多个厂站多个备自投联动情况进行了分析,并提出了防止备自投装置导致上级主变过载的措施以及运用软件备自投获得备自投投退组合的方法。

Analysis and Countermeasures of Preventing Transformer's Over-load Trip Caused by Action of BATS

The BATS device is important to make the power grid operate more reliably.At present,the setting schemen of the BATS in Nanjing power grid can solve the problem of transformer’s over load caused by the action of BATS.However it does not consider the over load at the standby power supply side of the whole power grid.Based on the analysis of the linkage actions of BATS devices in stations,countermeasures are proposed to prevent BATS devices from causing superior transformers’ over load.Meanwhile,methods of switching combination of the BATS devices can be obtained by using BATS software.