随着电网负荷的飞速增长,有3台主变的110kV变电所将逐渐增多,采用扩大内桥接线的变电所也逐渐增多。扩大内桥接线存在多种运行方式,也存在多种备用电源自投方式(简称备自投)。备自投的启动条件是可以满足要求的,但是出口回路比较复杂,利用空跳、空合的方式可以找到一种通用的出口逻辑。备自投闭锁条件仅考虑主变保护动作。 With the rapid growth of power grid load, there are 3 main transformer 110kV substations will gradually increase, with the expansion of the internal bridge wiring substation is also gradually increased. There are a variety of ways to expand the internal bridge wiring, there are a variety of backup power since the vote (hereinafter referred to as prepared from vote). Prepared to vote from the start-up conditions to meet the requirements, but the export loop is more complex, the use of air jump, empty the way you can find a common export logic. Prepared self-locking lock only consider the main transformer protection action.