Identification of Permanent Faults and Disturbance Induced by Deicing Based on Permutation Entropy for the Large-Scale Clean Energy Transmission in Winter

Table 1

Parameters of each element of the ice-melting system of the converter station.

Element	Parameter
AC power supply	500 kV
Step-down transformer	500 kV/38.5 kV
AC filter	20 MVar
Three-winding converter transformer	35 kV/15 kV/15 kV
Rated current of the 12-pulse converter valve	4.5 kA
Rated voltage of the 12-pulse converter valve	20 kV
Smoothing reactor	0.025 H
Length of the ground wire	70 km
Unit length resistance of the ground wire: R	0.2 Ω
Range of the resistance of the disturbance	0∼1000 Ω