AC (alternating current) bus splitting operation and tripping control method and device for high-voltage DC (direct current) system

The invention relates to an AC (alternating current) bus splitting operation and tripping control method and device for a high-voltage DC (direct current) system. The method comprises steps as follows: judging whether AC buses are in an overhaul state; judging whether the AC bus in the operation state is connected with a valve bank and a filter if one AC bus is in the overhaul state and the otherAC bus is in an operation state; and controlling to close the operating valve bank if the AC bus in the operation state is connected with the operating valve bank and is not connected with the filter.The condition that AC voltage of double buses is too high or not balanced can be effectively avoided, the safety of primary equipment is guaranteed, and the reliability of tripping logic of the splitbuses is improved. 本发明涉及一种高压直流系统交流母线分裂运行跳闸控制方法和装置，包括：判断交流母线是否处于检修状态；若一条交流母线处于检修状态，另一交流母线处于在运状态，判断处于在运状态的交流母线上是否连接有阀组和滤波器；若处于在运状态的交流母线上连接有在运阀组但未连接滤波器，则控制闭锁该在运阀组。本发明可以有效避免双母线交流电压过高或不平衡的情况，保证了一次设备的安全性，提高了分裂母线跳闸逻辑的可靠性。