Black-start scheme evaluation method

Abstract

The invention discloses a black-start scheme evaluation method, which comprises the steps of asking L experts to give a ranking vector for all evaluation indexes used for black-start scheme evaluation and figuring out a subjective based on the weight ordered binary comparison method; figuring out an objective weight based on the method of variation coefficient, according to an initial decision matrix formed by the values of all evaluation indexes; figuring out a comprehensive weight based on the vector similarity theory; converting the initial decision matrix in the form of real values into a decision matrix in the form of a Vague set, and converting a weight vector into a vector in the same form with the obtained decision matrix; and ranking all schemes based on the PROMTTHEE method of the Vague set to obtain a ranking sequence. According to the technical scheme of the invention, the objective difference of data and the subjective preference of experts are well combined, and then a more reasonable index weight is given. Meanwhile, the priority relationship of quantization schemes can be quantized more accurately based on the PROMTTHEE method, so that the schemes can be completely ranked.

Description

technical field [0001] The invention belongs to the field of power systems, and in particular relates to a method for evaluating a black start scheme. Background technique [0002] The black start of the power system refers to that after the entire power grid system is out of service due to a fault, through the start of the unit with self-starting capability in the system, also known as the unit with black start capability, it drives the unit without self-starting capability, and gradually expands the power supply range of the system, and finally realizes Restoration of the entire system. The black start plan is generally formulated by the dispatcher in advance, in case the system has a power outage of the entire network. For a specific system, there may be many feasible schemes, and the comprehensive effect of different schemes on the system recovery process may be hugely different. How to evaluate many schemes, so as to realize the ranking and optimization of schemes, has...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for evaluating black start schemes, aiming to solve the technical problems that when there are many feasible schemes for black start schemes, the priority order of the schemes cannot be confirmed, the recovery efficiency of the power grid system is reduced, and the technical problems affecting the use of users are solved.

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