Active distribution network optimization and reconstruction method

Abstract

The invention provides an active distribution network optimization and reconstruction method. The method comprises the steps of obtaining new energy power generation prediction data and ultra-short-term load prediction data in the active distribution network within a period of time in the future; calculating the flow distribution of the active distribution network within the period of time in thefuture based on the new energy power generation prediction data and the ultra-short-term load prediction data to obtain the load balancing condition of a prediction feeder; judging whether the switching power of the prediction feeder is out of the limit or not based on the load balancing condition of the prediction feeder; carrying out network topology analysis on the out-of-limit feeder to obtainpossible network reconstruction schemes of the out-of-limit feeder; carrying out optimization analysis on the possible network reconstruction schemes; and selecting an optimal network reconstructionscheme based on the analysis result, and obtaining a reconstructed switch operation sequence and index comparison before and after the reconstruction. The active distribution network optimization andreconstruction method adjusts the network structure by using switch optimization and combination operations, realizes power coordinated control between feeders by load transfer under certain constraints, establishes a network reconstruction strategy, eliminates feeder overload and improves the distributed generation absorption ability.

Description

technical field [0001] The invention relates to the technical field of network reconfiguration of an active distribution network, in particular to an optimal reconfiguration method of an active distribution network. Background technique [0002] Active distribution network (AND) is a distribution network that can comprehensively control distributed energy (DG, flexible loads and energy storage), and uses flexible network technology to achieve effective management of power flow. Distributed energy is reasonable in its On the basis of the regulatory environment and access criteria, it undertakes a certain supporting role for the system. [0003] After wind power, photovoltaic and other distributed energy generation are connected to the distribution network, not only the characteristics of the traditional one-way flow of energy have been changed, but also the reactive voltage has undergone significant changes in both steady and transient states, and the voltage quality has beco...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the embodiment of the present invention is to provide an active distribution network optimization and reconstruction method that improves the new energy consumption rate, so as to solve the problem of feeder power exceeding the limit caused by distributed energy such as wind power and photovoltaics connected to the distribution network. Improve the absorption capacity of new energy

Images