A Method and Device for Congestion Management and Loss Reduction in Distribution Network Based on Optimal Reconfiguration

Abstract

The embodiment of the present application discloses a method and device for distribution network congestion management and loss reduction based on optimization and reconstruction. Firstly, a distribution network network topology model is established, and then distribution network reconfiguration constraints and electric vehicle dispatching constraints are set. , to establish the objective function. According to the two constraints and the objective function, the congestion management and loss reduction model of the distribution network is established, and the state of the branch section switch after the reconstruction of the distribution network, the optimal charging time of the electric vehicle, and the upper and lower limits of the charging power are solved. The car is charging. The embodiment of the present invention can reconfigure the transmission line by obtaining the reconfigured branch switch state of the distribution network, and effectively relieve the line pressure of congestion; by obtaining the optimal charging time and the upper and lower limits of the charging power of the electric vehicle , avoiding the congestion of the distribution network caused by the unguided and unconstrained charging of electric vehicles. When establishing the objective function, the line loss cost of the distribution network is limited to the minimum, which significantly reduces the line loss generated by the distribution network.

Description

technical field [0001] The present application relates to the technical field of distribution network optimization dispatching, in particular to a method and device for distribution network congestion management and loss reduction based on optimal reconstruction. Background technique [0002] The distribution network includes the power supply side and the power consumption side, and occupies an important position in the entire power system. The safe and stable operation of the distribution network determines the power quality of the power consumption side. When there is a large amount of electricity demand on the power consumption side of the distribution network, for example, a large number of electric vehicles are connected to the distribution network, and a large number of electric vehicles need to be charged, which will lead to a sharp increase in the load of nodes in the distribution network, and even cause Distribution network congestion, where the node is the location...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the prior art cannot effectively manage distribution network congestion and reduce distribution network line loss, the present invention discloses a distribution network congestion management and loss reduction method and device based on optimization and reconstruction through the following embodiments

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