A Differential Planning Method for Distribution Networks Considering the Risk of Compound Faults

Abstract

A differentiated planning method for distribution networks that considers the risk of composite faults, belonging to the technical field of power system planning; including: dividing the regional meteorological protection levels according to the regional climate conditions of the distribution network; calculating the risk of each line under each meteorological protection level Historical failure rate; predict the composite failure rate prediction value of lines during the planning period based on historical failure rates; formulate differentiated planning plans for candidate distribution networks; build a comprehensive evaluation system to evaluate the differentiated planning plans of each candidate distribution network and select the optimal one Differentiated planning scheme for distribution network; this invention considers the impact of composite meteorological disasters on the distribution network, improves the comprehensive disaster response capability of the distribution network, and ensures the safe operation of the distribution network; evaluates the economic risk of composite failure rates and balances costs and failures Disaster risk; evaluating planning plans from the perspective of fault recovery capability has more important practical significance in promoting the application and improvement of distribution network planning work; it can improve distribution network planning efficiency and planning quality.

Description

technical field [0001] The invention belongs to the technical field of electric power system planning, and in particular relates to a differential planning method for a distribution network considering compound fault risks. Background technique [0002] With the continuous expansion of power grid scale, people have higher and higher requirements for power quality. In recent years, extreme weather disasters have occurred frequently, and the probability of line failure has increased significantly. When a major disaster occurs, it is very important to ensure the safe and stable operation of the distribution network and the continuous power supply of important loads. Traditional distribution network planning determines the optimal planning scheme through load forecasting during the planning period and analysis of the existing grid structure. On the premise of meeting the load requirements and safe and reliable power supply, the construction and operation costs of the distributio...

AI Technical Summary

Problems solved by technology

[0003] At present, my country's distribution network structure is relatively fragile, and its disaster response capacity is not strong enough. The research on distribution network planning technology for complex meteorological factors is still relatively weak, which cannot reflect the actual situation of disaster response capacity from many aspects, and also lacks effective and feasible methods. Evaluation Planning Method

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