Optimal configuration closing method for energy storage system of independent type micro power grid

Abstract

The invention discloses an optimal configuration closing method for an energy storage system of an independent type micro power grid. The method comprises the steps that a self-sufficiency probability requirement of the micro power grid is determined; an optimal configuration module of the energy storage system of the micro power grid is established; aimed at the optimal configuration module of the energy storage system, a rain-flow counting method is used to estimate the service life of a storage battery, and an investment coefficient is obtained; and load data and wind power data of one year are predicted, a proper operation strategy is adapted in the simulated operation process, and according to the optimization searching range, a traversal algorithm or particle swarm optimization is used to search configuration of the energy storage system. The method satisfies economical performance, provides the self-sufficiency probability requirement, and pursuits the system stability; the system stability is kept when the economical performance is optimal; and a balance is made among investment, operation and pollution treatment cost.

Description

technical field [0001] The present invention relates to the technical field of independent micro-energy grid energy storage system planning, in particular to a method for solving the optimal configuration of independent micro-energy grid energy storage and thermal energy storage, and in particular to an independent micro-energy grid energy storage system optimization Configure the solve method. Background technique [0002] With the depletion of traditional fossil energy and the increasingly severe environmental problems and global warming, vigorously developing low-carbon new energy represented by wind and light, and increasing the penetration rate of renewable energy in the existing power grid have become the solution to the above problems. one of the important ways. As a result, the concept of Energy Internet proposed by Jeremy Rifkin has attracted widespread attention. Among them, micro-energy grids that can be applied to factories, large buildings, urban and rural con...

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Problems solved by technology

[0003] However, the renewable energy represented by scenery has strong intermittent and random fluctuations, which often leads to the phenomenon of abandoning wind and solar.

Especially during the heat supply period, the operation mode of cogeneration units "setting power by heat" will reduce the peak-shaving capacity of the entire micro-energy grid, and even cause a large amount of "abandoned wind"

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