Power system economic dispatching method and system with valve point effect

Abstract

The invention relates to a power system economic dispatching method and system with a valve point effect. The method comprises the following steps: establishing an economic dispatching model by takingthe lowest total power generation cost of an actual generator set as an objective function; screening and correcting the input quantity of the economic dispatching model according to constraint conditions by utilizing a power distribution method, and determining the optimal valve point power; training the economic dispatch model by using the optimal valve point power, and determining the trainedeconomic dispatch model; according to the optimal valve point power, establishing a virtual generator set penalty performance function by utilizing a virtual generator set algorithm; establishing an optimal economic dispatching model according to the trained economic dispatching model and the virtual generator set penalty performance function; and according to the optimal economic dispatching model, carrying out optimal distribution on the economy of the power system, so that the total power generation cost of the actual generator set is the lowest. The optimal economic distribution of the power system can be realized, and the economic distribution efficiency and the distribution quality are improved.

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...

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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

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