Economic dispatching method for power system

Abstract

The invention provides an economic dispatching method for a power system. The economic dispatching method mainly comprises the steps of setting parameters of the power system; obtaining a row random matrix of a Laplacian matrix; setting parameters and calculating a value of a consistency variable and a power error; calculating a consistency variable value of the next state by utilizing a consistency iterative formula; calculating the output power of a generator and the power consumption of a load, and judging whether the output power of the generator and the power consumption of the load meetconstraint conditions or not; setting a driving function for updating the control rate; and judging whether iteration is finished or not and judging whether the communication topology is changed or not. According to the invention, economic dispatching of the power system is realized based on communication time delay in a communication protocol of the power system; event-driven control and a communication time delay consistency algorithm are combined, the resource waste is avoided, and the communication congestion is reduced; and meanwhile, a problem of sudden topology change is solved throughchanging the Laplacian matrix in the communication time delay consistency algorithm, and plug-and-play of an intelligent power grid element can be realized.

Description

technical field [0001] The invention relates to a power system economic dispatch method, which belongs to the field of power system economic dispatch. Background technique [0002] The main purpose of power system economic dispatching is to reduce the energy consumption of the entire power grid by formulating the optimal distribution plan between various power stations and loads on the premise of meeting power demand, power quality, and safe and reliable operation, so that enterprises can obtain maximum economic benefits. There are many flexible loads in the power system, and the dispatching center needs to exchange information with each dispatching object. If centralized dispatching is adopted, the cost of communication topology construction is high, and in order to realize the changeable plug-and-play topology, the dispatching have a big impact. Applying the consensus algorithm to the economic dispatch method to obtain a distributed economic dispatch method can well avoi...

AI Technical Summary

Problems solved by technology

Time lag often causes system instability, and the problem of time lag cannot be ignored. In the actual microgrid system, due to the dispersion of distributed generation, the distance between generators can reach several kilometers, so that the distance between generators There is a time lag in the information interaction due to communication conditions

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