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发明公开
CN109167400A 一种确定多馈入交直流系统的电压稳定性的方法及系统 无效 - 驳回

一种确定多馈入交直流系统的电压稳定性的方法及系统
摘要：
本发明公开了一种确定多馈入交直流系统的电压稳定性的方法及系统，包括：确定多馈入交直流系统的直流回路总数，并计算每个直流回路的多馈入短路比；分别计算任意两个直流回路间的多馈入交互作用因子；分别计算任意两个直流回路间的临界多馈入交互作用因子；将所述多馈入短路比、多馈入交互作用因子和临界多馈入交互作用因子与预设判断规则中的判断条件进行对比，确定所述多馈入交直流系统的电压稳定性。本发明考虑了多馈入交互作用因子的影响，弥补了多馈入短路比指标判断多馈入交直流系统的电压稳定性时的不足，能够应用于交直流系统规划、设计及运行等领域，简便快捷，对于指导大电网的规划和维护大电网的安全稳定运行具有重要意义。
摘要（英）：

The invention discloses a method and a system for determining the voltage stability of a multi-infeed AC/DC system, comprising the following steps: determining the total number of DC loops of the multi-infeed AC/DC system, and calculating the multi-infeed short-circuit ratio of each DC loop; The multi-feed interaction factors between any two DC circuits are calculated respectively. The critical multi-feed interaction factors between any two DC circuits are calculated respectively. The multi-feed short-circuit ratio, the multi-feed interaction factor and the critical multi-feed interaction factor are compared with the judgment conditions in the preset judgment rule to determine the voltage stability of the multi-feed AC/DC system. The invention considers the influence of multi-feed interaction factors, It can be used in the field of AC/DC system planning, design and operation. It is simple and quick. It is of great significance to guide the planning of large power network and to maintain the safe and stable operation of large power network.

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