Power system, operation method thereof and control device for power system

摘要

A power system is provided with: at least one power generation system configured to supply AC power to a sending end; a sending end converter configured to convert the AC power into DC power, the sending end converter having a receiving end which is connected to the sending end via a AC transmission line; a receiving end converter configured to convert the DC power into AC power, the receiving end converter being connected to the sending end converter via a DC transmission line; a protection device configured to control the sending end converter to execute a protective operation for lowering AC voltage at the receiving end when DC voltage in the DC transmission line rises beyond a threshold; and a control device configured to control the at least one power generation system to execute a stabilization operation for increasing a supply of reactive power to the sending end corresponding to the protective operation executed by the sending end converter.