Method for evaluating reliability of power transmission and distribution network, terminal and storage medium

Abstract

The invention relates to a method for evaluating reliability of a power transmission and distribution network, a terminal and a storage medium. The method comprises the following steps: acquiring power transmission network data and power distribution network data, performing data reconstruction according to the power distribution network data to obtain an uncertainty set, and establishing an uncertainty factor probability model according to the power transmission network data; sampling the uncertainty factor probability model and the uncertainty set to obtain power transmission network sampling data and power distribution network sampling data; determining an alternating current optimal power flow model by taking the minimum load shedding capacity as a target and taking the output of each generator as a decision variable; obtaining active power flow distribution and reactive power flow distribution of the power transmission network and active power flow distribution and reactive power flow distribution of the power distribution network according to the power transmission network sampling data, the power distribution network sampling data and the alternating-current optimal power flow model, and enabling boundary data of the power transmission network and the power distribution network to be converged to be consistent by adopting consistency constraint; and carrying out reliability evaluation according to the power flow distribution. The power distribution network fault reconstruction condition is considered in the reliability evaluation process, and the accuracy is high.

Description

technical field [0001] The invention belongs to the field of power system planning, and in particular relates to a method, a terminal and a storage medium for evaluating the reliability of transmission and distribution networks. Background technique [0002] The research on power system reliability is a topic with great economic value and great social significance raised from practical activities such as power system planning, design and operation. The reliability research of power generation system, transmission system, and distribution system has relatively mature methods in terms of data statistics and system index calculation, and reliability assessment is gradually becoming a routine work in power system planning and decision-making. In recent years, with the rapid development of distributed energy and distribution automation technology, the traditional "passive" distribution network has gradually transformed into an "active" distribution network. The coupling between ...

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Problems solved by technology

[0004] The purpose of the present invention is to propose a method, terminal and storage medium for the reliability evaluation of transmission and distribution networks, which uses integrated AC power flow to realize power flow iteration of transmission and distribution networks, improves the accuracy of reliability evaluation of transmission and distribution networks, and further solves the problem of The problem of poor reliability of distribution network

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