Research on the New Technology of Uninterruptible Electric Ice Melting in Distribution Network

To deal with the icing of overhead lines caused by frequent ice disasters, this subject proposes a new uninterruptible electric ice-melting technology for distribution network. The deicing device is composed of adjustable reactor and earthing transformer. The head end of the device is connected to the substation power supply through a transformer, and the end is short-circuited with one-phase line in the ice- covered section through a ground wire to form a zero-sequence circuit, so as to provide zero-sequence current to the line to be deiced online to make the line heat up and melt the ice to achieve deicing without power outage. After the article puts forward this scheme, the model was built in Maxwell 3D software for verification, and the ice melting test is carried out on the pilot line, which proves the feasibility of this scheme.