HIGH VOLTAGE DIRECT CURRENT TRANSMISSION SYSTEM WITH REACTIVE POWER COMPENSATION ON THE AC SIDE

摘要

Provided is a high voltage direct current transmission system including a power transmission part converting AC power into DC power (103); a power receiving part converting DC power into AC power (105); and a DC power transmission part (140) transferring the DC power converted in the power transmission part to the power receiving part, wherein one of the power transmission part and the power receiving part includes a measuring part (191, 193) measuring an AC voltage (UL1, UL2); an AC voltage control unit (191b, 193b) generating a first reactive power control signal (Q1C, Q2C) based on the measured AC voltage (UL1, UL2) and a reference AC voltage (UL1R, UL2R); a reactive power control unit generating a second reactive power control signal (qref1, qref2) based on the first reactive power control signal (Q1C, Q2C) and a reference reactive power signal (Q1R, Q2R); and a power control unit (191c, 193c) controlling reactive power of the power transmission part or the power receiving part based on the second reactive power control signal, thus achieving reactive power compensation.