Research Of Distribution Network Reconfiguration Considering Voltage Sag

The definition of distribution network reconfiguration is to change the status of the switches in distribution network to optimize a certain object under some preconditions.Along with a lot of new equipment sensitive to transient voltage putting into use, voltage sag caused intensive attention from both the power system and the user. The development of electric power market enforced the restriction to voltage sag. The characteristic of voltage sag is affected by the configuration of distribution network. The paper studied the issue of adding a "voltage sag restriction" to traditional distribution network's reconfiguration:(1)A design flow of distribution network reconfiguration considering voltage sag is put forward;(2)The object and the method to acquire the user's information is discussed after studying loads' sensitive class;(3) On the basis of analyzing the mechanism of voltage sag and the characteristics of different kind of voltage sag, the paper put forward the method, model and process to deal with the voltage sag restriction in distribution network's reconfiguration.