Operation-maintenance risk evaluation method for distributed new energy accessing power distribution network

Abstract

The invention discloses an operation-maintenance risk evaluation method for a distributed new energy accessing power distribution network. The method includes building a hierarchical risk evaluation system; establishing a factor set and a remark set of an evaluation object; calculating the occurrence probability and severity of subdivision risk of each aspect obtained by resolving each project; performing integration evaluation to obtain an evaluation index; building a fuzzy evaluation matrix at all levels based on fuzzy integration evaluation to evaluate the real-time risk level of a power distribution network; determining each subdivision risk weight through methods like objective entropy weight; and obtaining a final evaluation result through fuzzy operators and evaluation index processing. The method can calculate a risk evaluation model of a distributed new energy scale accessing distribution network, so that good adaptation on novel active power distribution network characteristics can be achieved, and detailed information of all risks can be reflected.

Description

technical field [0001] The invention relates to a risk assessment method for operation inspection of distributed new energy scale access to distribution network, a risk assessment model of distributed new energy scale access to distribution network that can be calculated in real time, and better adapts to new active distribution networks The characteristics can reflect the detailed information of each risk. Background technique [0002] At present, the research on risk assessment of power system has achieved certain results in the basic concept and importance of risk assessment, risk assessment model and calculation method, risk assessment index system and so on. Research on risk assessment of distribution systems lags behind that of transmission networks. Compared with the conventional distribution network, the risk in the operation and inspection process of the active distribution network under the access of large-scale distributed new energy is stronger, the probability ...

AI Technical Summary

Problems solved by technology

Compared with the conventional distribution network, the risk in the operation and inspection process of the active distribution network under the access of large-scale distributed new energy is more uncertain, the probability of occurrence is higher, and the hazard is more serious

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