Demand response uncertainty-considered photovoltaic micro-grid battery energy storage configuration method

Abstract

The invention discloses a demand response uncertainty-considered photovoltaic micro-grid battery energy storage configuration method. The method comprises the following steps of: (1) establishing a load self-elasticity coefficient-based demand response amount triangular fuzzy model under a day-ahead time-of-use electricity price; (2) establishing a day-ahead time-of-use electricity price optimization model; (3) establishing a demand response uncertainty-considered energy storage system optimization configuration model on the basis of the triangular fuzzy model and the day-ahead time-of-use electricity price optimization model; and (4) respectively converting a fuzzy optimistic value expression, a fuzzy pessimistic value expression and a fuzzy chance constraint in the energy storage system optimization configuration model into clear equivalent forms and carrying out solving to obtain a grid-connected photovoltaic micro-grid battery energy storage configuration scheme. According to the method, the complicated programming process and relatively long optimizing time when solving is carried out by adoption of a simulation method are avoided, the demands, for energy storage system configuration scales, of photovoltaic micro-grids are reduced by applying a demand response technology, and influences of the demand response uncertainty are considered, so that the method more accords with the demands of actual systems.

Description

technical field [0001] The invention belongs to the technical field of optimal configuration of energy storage systems, and more specifically relates to a photovoltaic microgrid battery energy storage configuration method considering the uncertainty of demand response. Background technique [0002] With the implementation and advancement of the "Photovoltaic Poverty Alleviation Policy", my country's distributed photovoltaic power generation business has developed rapidly, and a pattern of high-penetration distributed photovoltaics connected to the distribution network has been formed in some areas. Due to the intermittent nature of photovoltaic output and Volatility, large-scale distributed photovoltaic grid connection will bring challenges to the security and economy of the grid. Under the condition of large-scale distributed photovoltaic grid connection, compared with the direct grid connection scheme, the grid-connected photovoltaic microgrid access scheme is more economic...

AI Technical Summary

Problems solved by technology

If demand response is not considered, it will lead to too much energy storage allocation, resulting in waste of resources; if demand response is considered, but the uncertainty of demand response is not considered, the result of energy storage allocation will be too optimistic, resulting in insufficient energy storage allocation scale

Images