A method and apparatus for distribution network congestion management and loss reduction based on optimized reconfiguration

Abstract

Embodiments of the present application disclose a distribution network congestion management and loss reduction method and apparatus based on optimal reconfiguration. First, a distribution network topology model is established, then distribution network reconfiguration constraints and electric vehicle dispatching constraints are set, and an objective function is established. According to the two constraints and objective function, the congestion management and loss reduction model of distribution network is established, and the state of branch section switch, the optimal charging time and theupper and lower limits of charging power after reconfiguration of distribution network are solved to charge the electric vehicle. The embodiment of the invention can reconfigure the transmission linethrough the obtained branch sectional switch state of the reconfiguration of the distribution network, thereby effectively relieving the line pressure of blocking. By obtaining the optimal charging time and the upper and lower limits of the charging power of the electric vehicle, the blockage of the distribution network caused by the unguided and unconstrained charging of the electric vehicle is avoided. When the objective function is established, the line loss cost of distribution network is minimized, and the line loss caused by distribution network is significantly reduced.

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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