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1.故障情况 日照港入口电站进线电压等级为110kV,三台SW7—110C型少油断路器分别为两回进线开关及母联开关,平时一回进线给港口生产生活供电,另一回进线处于热备用状态。1998年7月,我们对电站监控、保护系统进行了改造,采用了变电站综合自动化系统。1999年11月3日,我们对全港电力设备进行了秋季停电检修清扫。秋检结束后将热备用进线开关电源侧隔离刀闸处于合位,负荷侧隔离刀闸处于分位。1999年11月12日凌晨4时,值班室当地监控
1. Fault conditions Rizhao Port inlet power station into the line voltage level is 110kV, three SW7-110C-type oil circuit breakers are two back into the line switch and the mother of the switch, usually back into the line to port life and power supply, and the other The return line is hot standby. July 1998, we carried out the transformation of power plant monitoring and protection system, using a substation integrated automation system. On November 3, 1999, we conducted a power outage and overhaul inspection of all power equipment in Hong Kong. After the fall inspection will be hot standby into line switch power supply side isolation knife in a position, the load side isolation knife in the sub-bit. At 4 a.m. on November 12, 1999, the duty room was monitored locally