求翻译：雷电是雷云层接近大地时，地面感应出相反电荷，当电荷积聚到一定程度，产生云和云之间以及云和大地之间放电，迸发出光和声的现象。供电系统在正常运行时，电气设备的绝缘处于电网的额定电压作用之下，但是由于雷击的原因，供配电系统中某些部分的电压会大大超过正常状态下的数值，通常情况下变电站雷击有两种情况：一是雷直击于变电站的设备上，二是架空线路的雷电感应过电压和直击雷过电压形成的雷电波沿线路侵入变电站。其具体表现形式如下：是什么意思？

Lightning thunder clouds close to the earth, the ground induced charge to the contrary, when the charge accumulation to a certain extent, resulting in the discharge between the cloud and the cloud and between clouds and the earth, burst out of light and sound phenomena. Power supply system in normal

It is lightning clouds close to Earth, ground sensing the opposite charge, when you charge build up to a certain degree, produce clouds and cloud as well as between discharge between cloud and earth, and the light and sound. Power supply system in normal operation, the electrical grid in the insulat

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When Thunder is thunder clouds close to Earth, ground-sensing the opposite charge, when the charge accumulated to a certain extent, between the cloud and the cloud, as well as discharge between the cloud and the Earth, emerges the optical and acoustic phenomena. Power supply system in normal run Shi

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