Wide-area distributed energy-storage system coordinated dispatching method by considering peak regulation and pressure regulation demands

Abstract

The present invention discloses a wide-area distributed energy-storage system coordinated dispatching method by considering peak regulation and pressure regulation demands. The method comprises the steps of: obtaining power grid parameters and distributed energy storage parameters; taking the minimum of the sum of the routine thermal power generating unit operation cost and the node voltage deviation punishment cost as a target function; taking a wind turbine generator constraint, a system constraint and a battery energy storage system constraint as constraint conditions, and establishing a wide-area distributed energy-storage system coordinated dispatching model by considering the peak regulation and pressure regulation demands; in order to facilitate rapid and accurate solution of the model, employing a linearization tool as such as a big M method to perform voltage drop constraint, and performing linear processing of nonlinear form such as a voltage deviation penalty term in the target function; and finally, transferring a solution tool to solve the established model at a simulation calculation platform to obtain an electric power system dispatching scheme comprising distributedenergy storage.

Description

technical field [0001] The invention belongs to the field of electrical engineering, and more specifically relates to a method for coordinating and dispatching a wide-area distributed energy storage system considering the demand for peak regulation and voltage regulation. Background technique [0002] my country's current energy structure is relatively single. The primary energy source is mainly coal power, and the proportion of flexible power sources such as gas-fired power stations is very small. Therefore, the lack of system regulation capacity has caused difficulties in the operation and scheduling of large-scale wind power power systems. According to the consistency of wind power and load fluctuations, the peak-shaving effect of wind power can be divided into three situations: positive peak-shaving, negative peak-shaving and over-peak-shaving. In the "Three North" regions with abundant wind resources in my country, the principle of "setting power with heat" for heating ...

AI Technical Summary

Problems solved by technology

This solves the technical problems of the existing technology, such as the single scheduling target of the energy storage system, the inability to effectively balance the insufficient peak shaving capacity caused by the large-scale wind power connection, and the excessive voltage deviation caused by long-distance transmission.

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