Black-start path recovery optimization method in composite disaster scene

Abstract

The invention relates to a black-start path recovery optimization method in a composite disaster scene, and the method comprises the steps: building a fatigue damage degree model based on disaster time according to the change of typhoon wind speed and influence range, and solving a line fault probability under a wind disaster condition; meanwhile, the influence of rainfall on a power grid under the typhoon condition is considered, a geographic information system records disasters, a grid method is used for dividing a region, the landslide probability of the region is solved, an effective rainfall dynamic correction model and a landslide probability model considering the effective rainfall are established, and meanwhile a slope impact force model and a tower impact resistance model are established. Solving the fault rate of the line; a black-start power supply is determined by adopting a subjective and objective combined improved entropy weight method, a target function considering the importance of lines and nodes is established, and a black-start path is determined through a genetic algorithm and a shortest path algorithm. Compared with the prior art, the method has the advantages that the line fault rate is evaluated more accurately, and a black-start path is prevented from passing through a high-risk line.

Description

technical field [0001] The invention relates to the technical field of power supply recovery under distribution network fault conditions, in particular to a black start path recovery optimization method in a complex disaster scenario. Background technique [0002] As the leading industry of the national economic system, the power system has an increasing demand for power, and the distribution network, as an important link in the power network, undertakes the role of delivering electric energy to users such as industry, commerce and households, which directly affects the demand for users. Power quality. Power outages not only cause huge economic losses to all walks of life in society, but also bring inconvenience to people's lives, cause social disorder, and even cause serious consequences such as national defense security and social unrest. According to statistics, more than 80% of power outages are caused by distribution network failures. When a fault occurs in the power ...

AI Technical Summary

Problems solved by technology

However, at present, after multiple faults occur in the distribution network, the failure rate of the line under disaster conditions has a great impact on the black start. After a fault, it is easy to cause the black start process to pass through high-risk lines, and there will be great security risks in path restoration.

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