A method for correcting boundary nodes of a voltage control region based on disconnection disturbance

被引：0
|
作者：
Lou Q. [1 ]
Wang K. [2 ]
Yuan T. [2 ]
Dong L. [2 ,3 ]
机构：
[1] State Grid Corporation of China, Beijing
[2] School of Electrical Engineering, Dalian University of Technology, Dalian
[3] State Grid Economic and Technology Research Institute Co., Ltd., Beijing
来源：
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2022年 / 50卷 / 18期
关键词：
average electrical distance; disconnection disturbance; threshold analysis; voltage control area; voltage stability;
D O I：
10.19783/j.cnki.pspc.211470
中图分类号：
学科分类号：
摘要：
The voltage control area (VCA) has weak coupling, and correcting the VCA can improve the consistency of voltage changes in the area, thereby optimizing the results of grid partitioning. The traditional partition correction method has problems such as requiring a large amount of calculation and lack of a theoretical basis for PV node merging. Therefore, this paper proposes a method to correct the boundary nodes of the VCA, one which can effectively reduce the calculation for the partition correction. The proposed method uses small element removal to obtain the grid division results under each threshold, and uses the Q-V curve as the criterion to select the quasi-division corresponding to the best threshold in each division result. Based on the weak coupling between regions, the proposed method is used to correct the quasi-partitioning, and the optimized partitioning results are obtained. The proposed method performs disconnection correction on the boundary nodes of the quasi-partition, and uses the average electrical distance to merge the remaining PV nodes after correction. This not only reduces the calculation for the partition correction, but also provides a theoretical basis for the rational allocation of reactive power sources in each area. The effectiveness of the proposed method is verified by simulation analysis of 10 machines and 39 nodes in New England. © 2022 Power System Protection and Control Press. All rights reserved.
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页码：141 / 149
页数：8
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