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| Node Vulnerability Assessment for Distribution Network Based on Complex Network Theory |
| WU Hui1, PENG Minfang1, ZHANG Haiyan1, ZHU Liang2, CHE Hongwei2, LIU Zhengyi2
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1. College of Electrical and Information Engineering, Hunan University, Changsha 410082, China;
2. State Grid Hunan Electric Power Company, Changsha 410007, China |
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Abstract Vulnerable nodes are very important to structural robustness of distribution networks, in order to assess node vulnerability of distribution networks, a method of sorting the vulnerability of distribution network nodes is proposed. Firstly, build the weighted complex network model of distribution network. Secondly, set weights of indexes such as degree, betweenness, agglomeration and closeness to assess importance of each index in describing the vulnerability of nodes, in the perspective of both subjective and objective way. Finally, put forward a method to sort vulnerability of distribution network nodes based on technique for order preference by similarity to ideal solution (TOPSIS) and grey correlation analysis. Test on several typical medium voltage di-stribution networks verifies the feasibility of the method. Analysis of the IEEE123 distribution network shows that multiple index comprehensive evaluation is more reasonable in distribution network than single index eva-luation.
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Received: 30 November 2015
Published: 24 February 2025
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