A Revised Branch-Current-Based State Estimation Method for Weak Looped Distribution Network

doi:10.11930/j.issn.10.11930.2015.8.61

Abstract

Abstract: Along with the development of distribution-network automation, the distribution system management has become a hot spot for study, and the state estimation of distribution network is a very important part of the study. In this paper, the meshed distribution network is changed to a radial distribution network by splitting the node in the loop. In order to satisfy the observable condition for distribution state estimation, a couple of load peso-measurements are added to the split nodes, which are obtained through the power flow calculation. Based on above-mentioned processing, the state estimation for meshed network is converted to the state estimation for radial distribution network. Numerical analysis has proved the rationality and effectiveness of this method, which can be realized by partly modifying the original algorithm program of the current-based state estimation, and thus has a good practical application value.

Key words: meshed distribution network, splitting node in loop, state estimation

CLC Number:

TM727

ZHANG Zhanlong, MA Haitao, SHI Weicheng, GAO Yajing, WANG Qian, ZHAO Xiaoxu. A Revised Branch-Current-Based State Estimation Method for Weak Looped Distribution Network[J]. journal1, 2015, 48(8): 61-66.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.10.11930.2015.8.61

https://www.electricpower.com.cn/EN/Y2015/V48/I8/61

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