Peak regulation scheduling method for energy storage power station in power system

Abstract

The invention relates to a peak regulation scheduling method for an energy storage power station in a power system, and belongs to the technical field of power system scheduling. According to the method, a power system peak regulation scheduling optimization model comprising an energy storage power station to improve the peak regulation capability of the system is constructed, and meanwhile, the voltage deviation of each node is considered in the model to meet the requirement of system safety. The model takes the minimum system peak regulation scheduling cost and the minimum time sequence average value of the sum of squares of normalized voltage deviations of all nodes as multiple targets, and the considered constraint conditions comprise system constraints, unit constraints and energy storage constraints. The genetic algorithm is employed for solving the optimization model. According to the method, the energy storage power station participates in system peak regulation to improve thesystem peak regulation capacity, and the thermal power generating unit peak regulation pressure is relieved; meanwhile, the system safety and the electric energy quality are guaranteed through dispatching, and a certain reference effect is achieved for the energy storage power station participating in peak regulation.

Description

technical field [0001] The invention relates to a peak regulation scheduling method for an energy storage power station in a power system, and belongs to the technical field of power system scheduling. Background technique [0002] The "Guiding Opinions on Promoting the Development of Energy Storage Technology and Industry" issued by the National Energy Administration pointed out that energy storage is an important component and key supporting technology of smart grids, energy systems with a high proportion of renewable energy, and "Internet +" smart energy. With the intermittent and fluctuating grid-connected operation of photovoltaic and wind power, as well as the continuous reorganization and improvement of the grid structure, the safe and stable operation of the grid has been challenged. Applying energy storage to the power generation side, grid side and user side can Effectively alleviate a series of problems caused by the increase in the penetration rate of new energy....

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Problems solved by technology

In "Economic Configuration Method for Battery Energy Storage System Cooperating with Thermal Power Plants to Participate in Real-time Deep Peak Shaving of Power Grid", the inventor invented a method for battery energy storage system to cooperate with thermal power unit peak regulation, but did not take into account the operation of the energy storage system , will affect the power flow of the system, so there is no index to characterize the safety of the system, such as voltage deviation

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