Switch Opening and Exchange Method for Stochastic Distribution Network Reconfiguration

Junpeng Zhan, Weijia Liu, C. Chung, Jiajia Yang

Research output: Contribution to journalArticlepeer-review

73 Scopus Citations


The purpose of distribution network reconfiguration (DNR) is to determine the optimal topology of an electricity distribution network, which is an efficient measure to reduce network power losses. Electricity load demand and photovoltaic (PV) output are uncertain and vary with time of day, and will affect the optimal network topology. Single-hour deterministic DNR is incapable of handling this uncertainty and variability. Therefore, this paper proposes to solve a multi-hour stochastic DNR (SDNR). Existing solution methods for DNR are either inaccurate or excessively time-consuming, and are therefore incapable of solving multi-hour SDNRs for large distribution networks. In this regard, a switch opening and exchange (SOE) method is proposed. Starting from a looped network with all switches closed, the SOE consists of three steps. The first step is to sequentially open the switches until all of the loops are opened. The second and third steps modify the status of branches obtained in the first step to obtain better radial topologies. Five test systems are used to validate the accuracy and fast solution speed of the SOE and the superiority of multi-hour SDNR over single-hour deterministic DNR.

Original languageAmerican English
Article number9003184
Pages (from-to)2995-3007
Number of pages13
JournalIEEE Transactions on Smart Grid
Issue number4
StatePublished - 2020

Bibliographical note

Publisher Copyright:
© 2010-2012 IEEE.

NREL Publication Number

  • NREL/JA-5D00-77366


  • Distribution network reconfiguration (DNR)
  • multi-hour stochastic DNR
  • photovoltaics (PV)
  • radiality


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