Method of Distribution Network Voltage Stability Weak Bus Identification Based on Characteristics Curvature

doi:10.3969/j.issn.1008-0198.2023.02.013

Abstract

Abstract: In this paper, a method for identifying voltage weak bus in distribution network based on the characteristic curvature is proposed for the determination of voltage stability weak bus. The P-V curve of network bus is generated by the extended power flow method, and the sensitivity index based on the average change rate of the active power-voltage curvature radius is established. K-means clustering is used to classify the sensitivity indexes of distribution network bus, and the evaluation indexes of weak bus are defined to classify and sort the weak. The reactive voltage compensation point is confirmed according to the weakness degree. Simulation experiments based on IEEE 33 node system verify the effectiveness and rationality of the proposed method.

Key words: power weak bus identification, sensitivity of curvature, extended power flow, K-means clustering

CLC Number:

TM712.2

SUN Jingliao, HU Changhong, CHEN Mengxiang, XIANG Yejun, LIU Jinyuan, ZHU Qiwei. Method of Distribution Network Voltage Stability Weak Bus Identification Based on Characteristics Curvature[J]. Hunan Electric Power, 2023, 43(2): 79-84.

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