架空地线的绝缘化改造及融冰方法

Insulation Reconstruction and Ice-melting Method for Overhead Earth Wire

提出了一种架空地线的融冰方法。通过对架空地线进行绝缘化改造,使架空地线沿线对地绝缘,从而使其具备融冰条件,并基于此提出了架空地线融冰电流的计算方法。架空地线由于电阻大,融冰时主要为有功功率消耗,宜采用交流融冰方法,融冰过程中不需停负荷,在实际中具有较强的经济性和可操作性。

An ice -melting method for overhead earth wire is presented： The overhead earth wire is insulated to the ground by insulation reconstruction, which makes it possess ice - melting conditions. Then, a calculation method of ice - melting current on overhead earth wire is proposed. Because of the great resistance of overhead earth wire, the active power is the main consumption during the ice melting. So the AC ice - melting method should be adopted for the overhead earth wire. It needs no power supply interruption during the ice melting, so it has a stronger economy and operability in the practice.