Microgrid energy storage system and capacity configuration method based on power prediction

Abstract

The invention discloses a power prediction based micro-grid energy storage system and a capacity configuration method. The capacity configuration method comprises the following steps of: adopting quick start power generation equipment to cooperate with energy storage equipment to serve as reserve power supplies of a micro-grid system to balance power fluctuations of a wind power generation system and a photovoltaic power generation system in the micro-grid system; under the condition that the micro-grid energy storage system is merely used for supplying power, measuring multiple longest power generation time delta t of the quick start power generation equipment and calculating the power fluctuations delta P3 of the wind power generation system and the photovoltaic power generation system in the longest power generation time delta t based on the techniques of predicting powers of the wind power generation system and the photovoltaic power generation system to obtain the minimum capacity configuration W of the energy storage equipment in the micro-grid system. The micro-grid energy storage system and the capacity configuration method have the beneficial effects that the minimum capacity configuration of the energy storage equipment is obtained based on the techniques of predicting powers of wind power generation and photovoltaic power generation, thus reducing the quantities of the energy storage system and corresponding corollary equipment, reducing the building cost and ensuring the stable operation of the power system.

Description

technical field [0001] The invention specifically relates to a power prediction-based microgrid energy storage system and a capacity configuration method. The utility model belongs to the technical field of a micro grid of a power system. Background technique [0002] Micro-grid technology effectively solves many potential problems of large-scale centralized power grids, perfectly adapts to decentralized power demand and resource distribution, and delays the huge investment required for upgrading transmission and distribution networks. Sex is improved. Currently, microgrids are powered by renewable energy sources such as wind and solar. However, due to changes in natural conditions, wind power and photovoltaic power generation cannot continuously and stably output electric energy, which affects the stability of the power system. In order to reduce the impact of the unstable output power of wind farms and photovoltaic farms in the microgrid system on the power system, it i...

AI Technical Summary

Problems solved by technology

Using a large-capacity configuration, this method does not fully combine the new technologies emerging in the field of renewable energy to optimize the capacity of the energy storage system, resulting in a large amount of energy storage equipment used, resulting in a large layout space for energy storage equipment , the corresponding ventilation protection equipment is more, and the project cost is higher

Therefore, the cost of existing energy storage equipment is high, it takes up a large space, consumes manpower and material resources, and is dangerous

Images