MODELING AND ON-SITE EXPERIMENTS OF SHUNT CAPACITOR COMPENSATION METHOD FOR DEICING OF 66KV POWER LINE

An EMTP-ATP model and a MATLAB model of 66kV double line network are built and simulated. By applying shunt capacitor compensation method for de-icing 66kV overhead transmission line within the models, the simulation results show an increase of the rms line current to 650A for the de-icing line which leads the cable temperature to increase. A COMSOL model for LGJ-120/20 cable is also built to simulate the temperature distribution of current-carrying ice covered cable. The simulation results show that the cable coated with 3cm thickness ice sleeve can be de-iced, which the surface temperature of the cable can be increased to above 310k after 40 minutes. Through the on-site experiment in Mishan primary substation 66kV transmission line, the real-time data were matched by both EMTP-ATP and MATLAB simulation results, which verified the effectivity and feasibility of the shunt capacitor compensation de-icing method.

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