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电,与工农业生产和人民日常生活息息相关,一旦发生计划外停电,就会给工农业生产带来不可估量的经济损失,也给人民生活带来诸多不便。 据笔者了解,因外力干扰引起电网停电,远远超过电网本身设备事故引起的停电。仅以1994年为例,浙江省玉环县因外力干扰电网停电多达22起,是电网设备事故停电的数倍以上。因此,如何防止外力干扰电网停电成为保证电网安全运行的首要问题。 外力干扰 防不胜防 1994年5月25日10时50分,陈某驾驶的东风半挂汽车勾住10千伏城关433线23、6、1号电杆拉线。拉断电杆,引起10千伏城关433线,医院432线短路接地跳闸,停电
Electricity is closely related to industrial and agricultural production and the daily life of the people. In the event of an unplanned power outage, it will bring immeasurable economic losses to industrial and agricultural production and bring inconvenience to the people's livelihood. As far as I know, due to external interference caused by power outage, far more than power grid itself caused by equipment blackouts. Only in 1994 as an example, Yuhuan County, Zhejiang Province, due to external interference power grid as many as 22 power outages, grid equipment accident blackouts more than several times. Therefore, how to prevent external power from interrupting the grid blackout has become the primary issue to ensure the safe operation of the grid. External force is hard to detect At 10:50 on May 25, 1994, Chen driving Dongfeng semitrailer car hook 10kV Chengguan 433 line 23,6,1 pole pull. Pull off the power pole, causing 43 kV line Chengguan 433, the hospital 432 short circuit ground trip, power outage