我国现有高压电器不少缺乏抗震能力,经不起强震袭击。如唐山地震,致使唐山地区所有变电站、输电线路不能受电运行,并严重波及京、津地区,使京、津、唐电网大面积停电,造成严重的社会和经济后果。震害调查及分析表明,关键的高压电器如断路器、隔离开关、避雷器等抗震能力薄 China’s existing high-voltage electrical appliances lack a lot of anti-seismic capabilities and cannot withstand strong earthquakes. For example, the Tangshan earthquake caused all substations and transmission lines in the Tangshan area to be inaccessible to electricity and severely affected the Beijing and Tianjin areas, causing widespread power outages in the Beijing, Tianjin and Tangshan power grids, causing serious social and economic consequences. Earthquake damage investigation and analysis show that the key high-voltage electrical appliances such as circuit breakers, disconnectors and arresters are thin