Optical storage complementary self-powered warehouse-type energy storage system

Abstract

The invention belongs to the technical field of electrochemical energy storage application, and in particular relates to an optical storage complementary self-powered warehouse-type energy storage system. An optical storage complementary power generation and supply system is used to provide self-use power for the energy storage system to reduce the cost of electricity. At the same time, a photovoltaic panel array is placed on the top of an energy storage container, which can play the role of sun protection and shade. New energy power supply and energy storage backup power supply of the self-consumption of the warehouse-type energy storage system, local consumption of photovoltaic power generation and the grid connection of surplus power are realized. The shortcomings of temperature rise incontainers, increased scale and power consumption of a temperature control system, and increased hidden dangers of safe operation of batteries of the warehouse-type energy storage system usually placed in the open air are overcome. The use of optical storage complementary power generation increases the use of new energy, prevents and reduces the disadvantage of temperature rise in containers caused by direct sunlight, reduces investment and power consumption, improves efficiency and commercial returns. In addition, a backup power supply is provided when a micro grid is off-grid, which not only saves UPS investment, but also facilitates the realization of black start.

Description

technical field [0001] The invention belongs to the technical field of electrochemical energy storage applications, and in particular relates to a warehouse-type energy storage system based on solar-storage complementary self-power supply. Background technique [0002] The energy storage system is based on reducing abandoned wind and light to improve the utilization rate of new energy, relying on peak regulation and frequency regulation to improve the economic efficiency and safety of power grid operation, and complementing energy storage with new energy, and closely interacting between energy storage and power grid peak regulation and frequency regulation. The commercial application of energy storage systems with the goal of electric energy interconnection has been favored and supported by the government and the industry. Energy storage systems are widely used in peak regulation and frequency modulation, peak shaving and valley filling, stabilization of new energy fluctuatio...

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Problems solved by technology

At the same time, there are many problems, such as: self-consumption is relatively large, which is generally more than 10% of the power supply capacity of the energy storage system, and self-consumption power is usually obtained from grid power and generally has no electricity price discount; The energy system is usually placed in the open air. The sun exposure on sunny days makes the insulation layer on the top of the container where the battery is installed soaked through, and the temperature inside the container rises. This requires a larger-scale temperature control system and more power consumption, which also affects the safe operation of the battery. Increased hidden dangers; external power is required to start the microgrid in the off-grid state, and a UPS system is usually configured to provide the self-consumption power of the warehouse energy storage system

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