Optimal Placement of Switching Devices in Power Distribution Networks Using the Switch-Position-Exchange Technique

摘要

This paper presents a switch-position-exchange (SPE) technique for determining the optimal positions of switching devices (OPSD) in power distribution networks (PDN) when the number of switching devices is pre-specified. In the OPSD process, each candidate switching device is moved to its K-degree-positions (K-DP) in turn for improving system reliability. When the position of a switching device in a PDN is changed, the rules for the corresponding system reliability variation can be derived using a section technique. System reliability is only updated for those sections whose nodal classes have been changed during switching exchange in reliability evaluation. Case studies on the RBTS and a practical PDN show that the SPE is a very useful technique for determining the OPSD, and the SPE technique usually provides a better result than those from the existing methods.