An evaluation method of black start scheme based on the combination of penalty variable weight and promethee

Abstract

The invention discloses a black start scheme evaluation method based on the combination of penalty variable weight and PROMETHEE, which combines the calculation results of the analytic hierarchy process and the entropy weight method to calculate the initial combined weight of evaluation indicators, taking into account the subjectivity and objectivity of evaluation. Using the penalized function variable weight analysis method, the initial combination weight and the measured data are combined to a certain extent to avoid the index with small value and low weight being neutralized by the index with large value and high weight, which ensures the rationality and fairness of the evaluation results. The index weights after variable weights are combined with the PROMETHEE method to evaluate different black-start schemes, and the pros and cons of the black-start schemes are obtained. The method is clear in thinking, simple and easy to implement, and easy to be understood and accepted by decision makers. Through this method, a more reliable black-start scheme can be ranked, which provides guarantee for the complete operation of the power grid.

Description

technical field [0001] The invention belongs to the technical field of black start scheme evaluation, and in particular relates to a black start scheme evaluation method based on the combination of penalty variable weight and PROMETHEE. Background technique [0002] After a power outage occurs in the power grid, it is necessary to adopt a black-start scheme for recovery, and a reasonable and effective black-start scheme is an effective measure for timely recovery after a major power outage in the power grid. . Especially under the background that the scale of the modern power system is expanding, the structure is more solid, and the network topology is becoming more and more complex, technicians can propose many feasible black-start schemes, but these schemes may have a huge comprehensive effect on the system recovery process. difference. Therefore, it is a work of practical value and great significance to evaluate and sort the black start programs. SUMMARY OF THE INVENT...

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Problems solved by technology

Especially in the context of the modern power system's increasing scale, increasingly solid structure, and increasingly complex network topology, technicians can propose many feasible black-start schemes, but the comprehensive effect of these schemes on the system recovery process may have a huge impact. difference

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