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详细分析了目前云广特高压直流站控系统对于小组交流滤波器投入以及退出状态的判别逻辑,并与其他高压直流工程相应逻辑进行对比分析,同时结合实例,指出其中存在的设计缺陷,该设计缺陷会导致直流站控系统误判小组滤波器在投入或者退出状态,从而影响系统无功控制,并针对性地提出了相应的改进建议,该建议同样适用于其他高压直流工程。
This paper analyzes in detail the discrimination logic of the AC / DC station control system of Yun-Guang UHVDC for inputting and exiting state of the AC filter in the group, compares it with the logic of other HVDC projects, and points out the design flaws in it. Defects cause the DC station control system to misjudge the group filter in the input or exit state, thus affecting the system reactive power control, and pointedly put forward corresponding improvement suggestions. The proposal also applies to other HVDC projects.