Research on System Reconfiguration Technology of Distribution System Single-Phase-to-Earth Fault

Abstract:

Distribution network can operate with electricity for 1~2 hours after single-phase to-earth fault happening, so its network reconfiguration is different from not only reconfiguration in normal situation but also reconfiguration in fault situation and it should consider more factors. This paper puts forward a kind of improved branch exchange algorithm which all power supply restoring areas are divided into two groups: group A which are branch circuits on the same bus of fault line and group B which are power supply restoring lines on the different bus of fault line. For all power supply restoring lines of two groups, when voltage satisfies the constraint conditions, dispatcher prior chooses power supply restoring line which has minimum network loss value in group A in order to avoid outage during process of power supply restoring. Actual flied operation shows that this measure satisfies practical requirements.

• Periodical: Applied Mechanics and Materials (Volume 532)
• Pages: 603-610
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.532.603
• Online since: February 2014
• Authors: Bo Cai
• Keywords: Distribution Network, Improved Branch Exchange Algorithm, Network Reconfiguration, Single-Phase To-Earth Fault

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