Ice-melting electrical wiring circuit for extra-high voltage multi-terminal direct current transmission line

The utility model relates to the technical field of high-voltage direct-current power transmission, in particular to an extra-high-voltage multi-terminal direct-current power transmission line ice-melting electrical wiring circuit, which comprises a plurality of ice-melting isolating switches arranged in a two-terminal or multi-terminal direct-current power transmission system, and two ice-melting isolating switches arranged on a wiring in the voltage direction of a negative electrode high-terminal converter valve group, the problem that traditional ice melting electrical wiring is only suitable for double-end direct current and cannot meet the ice melting requirement of an extra-high voltage multi-end direct current converter station is solved. According to the utility model, the ice melting requirement of the long-distance direct-current transmission line is realized by adding the plurality of ice melting isolation switches, the reliability of safe operation of the transmission line is improved, the constru