A Distributed Auction Method for Economic Dispatch of Electric Power System

Abstract

The invention discloses a distribution type auction algorithm for the economic scheduling of electric power system. before the auction algorithm, the active power of each power generating set is initialized, including the determination of the initial active power of each power generating set based on the formula described in the figure of this abstract wherein pi represents the active power; PD the overall load of the system; pimaxand and pimin the maximum value and the minimum value of the active power of power generating set i respectively; and N the overall number of the power generating sets. The auction algorithm comprises the steps of quotation assessment, negotiation, decision and exchange. The execution process comprises two time levels with the first time level for quotation assessment and negotiation and the second level for decision implementation and exchange. At the first time level, one time quotation assessment and negotiation are made before entering the second time level. At the second time level, N / 2 maximum integer decisions are made before entering the first time level for quotation assessment and negotiation.

Description

technical field [0001] The invention belongs to the field of optimal dispatching of electric power systems, and specifically uses an auction algorithm to solve the problem of economical dispatching of electric power systems. Background technique [0002] The task of power system economic dispatch is to improve the economy of system operation as much as possible on the premise of meeting the requirements of system safety and power quality. The methods for solving power system economic dispatch can be divided into centralized methods and distributed methods. Traditional centralized methods such as iterative methods and interior point methods, these two traditional methods can only be used when the cost function is convex. Although convex functions are suitable for the preliminary analysis of economic dispatch, they do not work well for solving convex functions because the actual cost function is often non-convex. The methods used to deal with non-convex economic scheduling a...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of economic dispatching in the power system, efficiently solve the problem of load distribution among units, reduce the cost of system power generation, and overcome the disadvantages of centralized algorithms such as poor fault tolerance

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