基于综合灵敏度的两阶段电压控制分区方法

针对传统电压分方法中发电机节点转换会影响负荷区域灵敏度的问题,提出一种基于综合灵敏度的两阶段电压控制分区方法.第一阶段采用综合灵敏度实现负荷节点的聚合分区,并在该阶段完成主导节点的识别.第二阶段首先考虑电压稳定性归并PV节点,然后采用灵敏度法逐次归并剩余发电机节点.综合灵敏度模型能全面反映负荷区域功率与电压的耦合性,主...

Two-stage voltage control partition method based on comprehensive sensitivity

The type conversion of PV nodes affects the sensitivity of the load area in the traditional voltage control partition method, thus a two-stage voltage control partition method was proposed based on comprehensive sensitivity. Firstly, the integrated sensitivity was used to realize the aggregation and division of PQ nodes, identifying the voltage dominant nodes in the load area. The second stage was divided into two steps. The first step was to obtain the merging of PV nodes through the QV curve method, considering voltage stability. The second step used the sensitivity method to merge the two PV nodes, based on the idea of reactive power control space. The comprehensive sensitivity model can fully reflect the coupling of power and voltage in the load area, and the dominant nodes identification can optimize the number of control nodes. The new method utilized the regional voltage stability as the leading factor and the sensitivity method as the recursive method, which can reduce the type conversion effect and avoid the artificial PV merging disadvantages. The simulation results validated the effectiveness of the proposed method.