Simulating and reducing power-frequency electric field of 500kV quadruple-circuit transmission line on same tower

In order to suppress the power-frequency electric field according to the limit requirement specified in the national standard and reduce the engineering cost effectively, computational models of 500 kV quadruple-circuit transmission line on the same tower are used to evaluate the power-frequency electric field under the transmission lines. The relationship between peak field strength and the height of the phase line is analyzed quantitatively. The result can be used to suppress the power-frequency electric field according to the limit requirement specified in the national standard and reduce the engineering cost effectively. It can also be used as reference for engineering. The influences of quantity,horizontal position and height of shielding wire on the shielding effect are analyzed respectively, which provide some reference for the configuration of shielding wire.