HIGH-VOLTAGE DC POWER TRANSMISSION SYSTEM ALLOWING OVERLOAD CAPACITY TO PREVENT UNNECESSARY ACCIDENTS, A CONTROL DEVICE THEREOF, AND AN OVERLOAD CONTROL METHOD

摘要

PURPOSE: A high-voltage DC power transmission system, a control device thereof, and an overload control method prevent accidents and improve the operation efficiency and reliability of a system by performing reliable overload control.;CONSTITUTION: A transformer (10) converts input AC power into AC power for transmission. A power converter (20) converts the AC power for transmission into DC power or converts the DC power into the AC power for transmission. A DC cable (30) transmits the DC power. A control device (40) controls the transformer and the power converter. The control device includes an overload control unit which controls a current limit value for DC of the DC power and performs overload control for a line.;COPYRIGHT KIPO 2013;[Reference numerals] (10,BB) Transformer; (20,AA) Power converter; (40) Control device; (53) Temperature sensor; (54) Humidity sensor; (60,CC) Cooling device; (80) Input device