Distributed configuration method for generalized energy storage system in active power distribution network

Abstract

The invention provides a distributed configuration method for a generalized energy storage system in an active power distribution network, and the method comprises the following steps: 1, obtaining the basic information of the power distribution network, and generating a calculation scene and a corresponding scene probability; 2, selecting a calculation scene, and determining the comprehensive cost of the generalized energy storage system and a to-be-selected installation position; 3, selecting a generalized energy storage system operation strategy of each installation position, and determining the installation position and the corresponding installation capacity of the generalized energy storage system according to the minimum comprehensive cost; and 4, obtaining the total installation capacity of the generalized energy storage system in the active power distribution network under different scene probabilities. According to the method, a double-layer optimization target is established, the upper layer carries out distributed energy storage site selection and capacity configuration with the minimum cost, the lower layer carries out energy storage optimization operation, and a series of problems of full consumption of distributed photovoltaic in the active power distribution network, too large load peak-valley difference of part of transformer areas and the like are solved.

Description

technical field [0001] The invention relates to the field of distribution network technology, in particular to a distributed configuration method for a generalized energy storage system in an active distribution network. Background technique [0002] Energy storage can realize two-way regulation of power and energy, and has a fast response speed. Its application value has been recognized by the market. According to the different applications of energy storage systems, the current research on capacity optimization in power grids focuses on the following two aspects: capacity optimization of energy storage systems with renewable energy; capacity optimization of energy storage systems with microgrids. There is relatively little research on capacity optimization of energy storage in distribution networks, so it is necessary to carry out research on capacity optimization of energy storage systems in active distribution networks. [0003] In addition, the current energy storage c...

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Problems solved by technology

[0004] Aiming at the consumption problem caused by high-permeability distributed photovoltaic multi-point access to the distribution network, and the problem of excessive peak-to-valley difference caused by the load increase of some distribution networks, the purpose of the present invention is to provide an active power distribution system. The distributed configuration method of the generalized energy storage system in the network, through the establishment of a two-layer optimization goal, the upper layer performs the site selection and capacity configuration of the distributed energy storage at the lowest cost, and the lower layer performs the optimized operation of the energy storage, so as to realize the active distribution network. A series of problems such as the full consumption of distributed photovoltaics and the excessive peak-to-valley load difference in some station areas

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