Energy storage system operation method for frequency modulation participated by shared energy storage of new energy power plant

Abstract

The invention belongs to the technical field of power system frequency control, and relates to an energy storage system operation method for frequency modulation participated by shared energy storage of a new energy power plant. The method comprises the following steps: establishing a target function considering the electricity purchasing and selling cost of the energy storage system, the secondary frequency modulation income, the life loss and the deviation electric quantity penalty; determining decision variables and constraint conditions of the optimization model, wherein the constraint conditions comprise energy constraint, power constraint, electric quantity constraint and the like, and the service life, the electric quantity level, frequency modulation performance and the like of the energy storage system are comprehensively considered; and converting the optimization model into a mixed integer linear programming problem, wherein mature optimization software is used for solving, and a comprehensive optimal strategy of the current secondary frequency modulation capacity and reference power declaration is obtained. The method particularly considers that the shared energy storage undertakes the primary frequency modulation obligation of the new energy station, and makes full use of the self-regulation capability to provide the secondary frequency modulation service so as to obtain benefits.

Description

technical field [0001] The invention belongs to the technical field of power system frequency control, and relates to an energy storage system operation method in which shared energy storage of a new energy power plant participates in frequency regulation, and specifically relates to an optimized operation method in which a shared energy storage system simultaneously participates in primary and secondary frequency regulation. Background technique [0002] In recent years, the installed capacity of new energy in my country has gradually increased. In the next few years, the adjustment of my country's energy structure will be accelerated, and the penetration rate of new energy in the power system will be further increased. Its volatility and randomness will affect the safe operation of the power system. In order to improve the stability of the power system, my country has issued policies to stipulate that wind farms and photovoltaic power stations should have primary frequency ...

AI Technical Summary

Problems solved by technology

However, these methods do not consider the situation that the energy storage system participates in primary and secondary frequency regulation at the same time

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