Electrical power system black start method based on grey wolf optimization algorithm

Abstract

The invention discloses an electrical power system black start method based on a grey wolf optimization algorithm. The electrical power system black start method based on the grey wolf optimization algorithmcomprises the steps that machine sets and electrical power networks needing to be restored are firstly determined, and an electrical power system black start decision optimization model is established; electrical power systemrestoring overall time is selected as an optimized index; the initial state of an electrical power system which has power failure is determined, classification is conducted according to the machine sets, hydropower stations, pumped storage power stations or gas turbine generator units are taken as a black start power supply, preferred starting types are further started, and finally the whole electrical power system is restored; a plurality of decision schemes are obtained according to corresponding electrical power line current constraint and voltage constraintconditions; then a grey wolf algorithm is optimized from two stages of initialization and diversification of gray wolf populationand a nonlinear convergence equation; and finally corresponding power balance constraint and tide constraint conditions are taken as the evaluation basis of an adaptation coefficient, and thus the optimal decision scheme is found out.

Description

technical field [0001] The present invention is mainly applied in the field of large-scale power system black start, and belongs to the field of computer technology application, and relates to the technical field of algorithm optimization of complex constraint functions, and particularly relates to a large-scale power system black start based on the optimized gray wolf algorithm, unit online and offline Restore decision making. Background technique [0002] With the rapid development of the economy, people's demand for electricity is increasing, and the power system is also expanding. The number and types of power equipment are increasing, and the structure of the power network is becoming more and more complicated. When a partial failure occurs in the power system and cannot be handled properly, it is very easy to cause a large-scale cascading power outage, that is, a power system blackout accident. The existing experience and examples at home and abroad show that various ...

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Problems solved by technology

[0004] Among them, the offline method may not be able to restore the power system accurately due to changes in the actual restoration situation, and the existing online power system restoration technology generally has the disadvantage of low efficiency.

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