Active power distribution network reconstruction method and device

Abstract

The invention discloses an active power distribution network reconstruction method and device. The active power distribution network reconstruction method comprises the following steps: obtaining a plurality of time periods in a preset time; obtaining network loss of a plurality of nodes in an active power distribution network at each time period in the plurality of time periods; comparing the network loss of the plurality of nodes, and sequentially obtaining three nodes, whose network loss is the smallest; carrying out one-to-one pairing on the nodes at adjacent two time periods to form three topological chains, wherein the three nodes are paired with the nodes, of which the switching action times are fewest, in the three nodes at the adjacent time periods in a sequence that the switching action times are from the least to most; and selecting the topological chain, of which the sum of the network loss and the switching cost is the least, in the three topological chains formed in the preset time, as a reconstruction scheme of the active power distribution network, wherein the switching cost is the cost generated by the switching action. According to the reconstruction method and device, the problem that reconstruction of the active power distribution network consumes a relatively long time in the prior art is solved, and the effect of reducing the consumed time of the reconstruction of the active power distribution network is achieved.

Description

technical field [0001] The invention relates to the field of distribution networks, in particular to a method and device for reconfiguring an active distribution network. Background technique [0002] The operating state of the power system changes with the change of the load, and the distribution network reconfiguration is determined by the current operating state of the power system. Each power flow time section has an optimal distribution network topology. When the load on some nodes changes greatly, the power is distributed unevenly in the network, the voltage changes relatively large, and the network loss increases, it is necessary to change the network topology to balance the load, reduce the network loss, and meet the voltage quality requirements. From the perspective of optimal network loss, the distribution network should be reconfigured all the time. However, reconfiguration requires switching on and off of switches. Frequent switching operations increase the prob...

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a method and device for reconfiguring the active distribution

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