A Safety Assessment Method for Load Capacity of Active Distribution Network under Anticipated Accident Conditions

Abstract

The invention relates to the technical field of running and control of initiative power distribution networks, in particular to an initiative power distribution network load capacity safety evaluationmethod under imaginary accident conditions. The method includes the steps of obtaining basic data for initiative power distribution network load capacity safety evaluation, determining an imaginary accident set of initiative power distribution network load capacity safety evaluation, creating an initiative power distribution network load capacity safety evaluation model under the imaginary accident conditions and evaluating the safety of initiative power distribution network load capacity. According to the method, various imaginary accident scenes of an initiative power distribution network can be taken into account, the influences of a continuous-type reactive compensation device, a discrete-type reactive compensation device and a distributed-type power source on the initiative power distribution load capacity safety evaluation are calculated, accurate evaluation of the safety of the initiative power distribution network load capacity under the imaginary accident conditions is achieved, and defects in traditional power distribution network maximum power supply capacity calculation methods are overcome in order to accurately solve a problem of evaluating the safety of the initiative power distribution network load capacity under the imaginary accident conditions.

Description

technical field [0001] The present invention relates to the technical field of active distribution network operation and control, and more specifically, relates to a safety evaluation method for active distribution network load capacity under anticipated accident conditions. Background technique [0002] The load capacity of the active distribution network refers to the maximum load supply capacity of the distribution network under various operating constraints, and is a key indicator for evaluating the safe operation of the power supply of the distribution network. In the traditional distribution network load capacity analysis, usually only the contact capacity constraint between feeders, the main transformer capacity constraint and the load transfer path after the main transformer failure are considered, and then the maximum load capacity of the distribution network is calculated. Although this method is simple to calculate, it can quickly calculate the maximum load capaci...

AI Technical Summary

Problems solved by technology

However, due to the lack of consideration of feeder power flow constraints, node voltage constraints and thermal stability constraints, feeder section switches and tie switches between feeders, and the simultaneous failure of multiple power equipment, it cannot be accurately calculated The actual maximum load capacity of the active distribution network

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