Distribution network reconstruction optimization method based on multi-objective optimization

Abstract

The invention discloses a distribution network reconstruction optimization method based on multi-objective optimization. The method includes the following implementation steps that the current system losses, the load balance index and the minimum node voltage of a distribution network are respectively calculated, whether reconstruction optimization is needed or not is judged, if reconstruction optimization is needed, the distribution network is reconstructed, and then an optimal topological structure is acquired; when the load balance index or the minimum node voltage exceeds threshold values, network reconstruction operation is directly executed, when only the system losses exceed threshold values, an economic benefit evaluation index needed for switching the distribution network from the current topological structure to the optical topological structure is calculated, and if the index is larger than a designated threshold value, it is judged that economic benefit evaluation passes and the network reconstruction operation is executed; or else evaluation does not pass and the network reconstruction operation is not executed. The reconstruction optimization effect of the distribution network is good, economic benefit evaluation can be conducted before execution of the network reconstruction operation, waste is avoided, use is convenient, resources are saved, and economical efficiency and safety are good.

Description

technical field [0001] The invention relates to the automation technology of power system distribution network, in particular to a distribution network reconfiguration optimization method based on multi-objective optimization. Background technique [0002] The power distribution network has the characteristics of closed-loop design and open-loop operation, which is realized by configuring some switches on the distribution line. There are a large number of normally closed section switches and normally open tie switches in the distribution network. Network reconstruction is to operate these switches, that is, to reorganize the operation mode of the network by adjusting the opening and closing states of the switches in the network, so that it is in the A more favorable operating state. Distribution network reconfiguration mainly includes two aspects: ① network optimization and reconfiguration, ② fault recovery and reconfiguration. Among them, network optimization and reconstr...

AI Technical Summary

Problems solved by technology

The current network optimization and reconstruction is basically used to guide the distribution network planning, and it is necessary to stimulate the potential of the network itself for real-time reconstruction, but if the network is not restricted, it will cause unnecessary waste of resources, so The current network should be assessed in advance to determine whether refactoring is required

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