A method and system for economic dispatch of power system with valve point effect

Abstract

The invention relates to a method and system for economic dispatching of electric power system with valve point effect. The method includes: taking the minimum total power generation cost of the actual generator set as the objective function, establishing an economic dispatching model; using a power distribution method, screening and correcting the input of the economic dispatching model according to constraint conditions, and determining the optimal valve point power; Utilize the optimal valve point power to train the economic dispatch model, determine the economic dispatch model after training; according to the optimal valve point power, use the virtual generator set algorithm to establish a virtual generator set penalty function; according to the trained An optimal economic dispatch model is established based on the economic dispatch model of the virtual generating set and the penalty function function of the virtual generating set; according to the optimal economic dispatch model, the economy of the power system is optimally allocated so that the total power generation cost of the actual generating set is the lowest. The invention can realize the optimal economic distribution of the power system, and improves the economic distribution efficiency and distribution quality.

Description

technical field [0001] The invention relates to the field of power systems, in particular to a method and system for economic dispatching of power systems with valve point effects. Background technique [0002] Power system economic dispatch refers to a dispatch method that uses energy and equipment reasonably to ensure reliable power supply to users with the lowest power generation cost or fuel cost on the premise of satisfying safety and power quality. my country's power system has long insisted on centralized dispatching. Centralized dispatch will make it more difficult to solve the economic dispatch of the power system, and it is urgent to find an effective method to solve the economic dispatch of large power grids. Therefore, it is of great significance to study the solution problem of large power grid economic dispatching. Economic dispatch is a typical optimization problem, which needs to allocate unit power reasonably under the condition of satisfying demand and va...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method and system for economic dispatching of electric power system with valve point effect, so as to solve the problem of low solution efficiency and solution quality of the economic distribution scheme in the economic distribution process of the existing power system

Images