A REACTIVE POWER CONTROL STRATEGY BASED ON POWER CORRECTION IN THE PROCESS OF VOLTAGE RESTORING

摘要

For the defect Guizhou-Guangdong II ± 500kV HVDC System can not configure filter in accordance with the voltage-mode, which may lead to excessive voltage of AC system, even appear cutting filter due to AC voltage limiting. This paper presents a power adjusting strategy in the process of voltage recovering, based on the character that consume of reactive power converter valve changes with DC voltage. With dynamic functional test and system test, the strategy cuts filter rationally, solving the overvoltage problem of AC system in the process of voltage recovering. It also simplifies the reactive power control strategy.