METHOD AND APPARATUS FOR CONTROLLING DIRECT-CURRENT VOLTAGE

摘要

A method for controlling a direct-current voltage and an apparatus for implementing the method. The method comprises: when a master station loses a direct-current voltage control function, determining whether the master station is able to communicate with at least one slave station, and if yes, the master station sending information about that the master station loses the direct-current voltage control function to at least one slave station, so as to enable a direct-current voltage control function of one slave station to adjust a direct-current voltage. Before the direct-current voltage control function of the slave station is enabled, if a direct-current voltage exceeds a running range, at least one slave station enables a direct-current voltage auxiliary control function to adjust output or absorbed active power. When the master station cannot communicate with all or a part of slave stations, if a direct-current voltage exceeds a running range, at least one direct-current voltage controls a slave station to enable a direct-current voltage auxiliary control function to adjust active power that is currently output or absorbed, and determining a slave station according to a strategy to enable a direct-current voltage control function to adjust the direct-current voltage. The direct-current voltage control method can reduce a direct-current voltage oscillation of a system that is caused when a direct-current voltage master station stops running.