我局某电力工区在机务段长期配置发电车一辆作为备用电源。当主电源停电时给机务段的重要负荷供电。有时还需要通过机务段10(6)/0.4kV变电所的配电变压器对高压端反向送电,以保证高压配电所的其他重要负荷(如编组场)的用电。但是,原有的变、配、发电系统没有实现充分的电气联锁,靠人工联系进 I Bureau of a power work area long-term deployment in the depot a car as a backup power. When the main power supply to the locomotive when the important load power supply. In some cases, it is also necessary to reversely send electricity to the high voltage terminal through the distribution transformer of the 10 (6) /0.4kV substation in the depot to ensure that other important loads (such as the marshalling yard) of the high-voltage power distribution station are consumed. However, the original change, distribution, power generation system did not achieve full electrical interlocking, by manual contact