Battery energy storage system based on distributed control and layout, and energy scheduling method thereof

Abstract

The invention discloses a battery energy storage system based on distributed control and layout, and an energy scheduling method thereof, and belongs to the technical field of energy storage. According to the battery energy storage system, each energy storage battery cabinet is connected in series with the corresponding DC-AC module, the plurality of DC-AC modules are connected in parallel and then connected with one end of a transformer, the other end of the transformer is connected to an external power grid, the DC-AC module comprises a control module, a BMS battery management module and a charging and discharging circuit, the control modules are connected with the BMS battery management modules and the charging and discharging circuits, the energy storage battery cabinet comprises a battery module, a temperature sensor and a temperature control device which are arranged in the cabinet body of the energy storage battery cabinet, the battery module is connected with the BMS battery management module and the charging and discharging circuit, and the temperature sensor and the temperature control device are connected with the control module. According to the invention, reliability and safety are high, the working efficiency of the system can be greatly improved, and finally the purpose of prolonging the service life of the energy storage system is achieved.

Description

Technical field [0001] The invention belongs to the technical field of energy storage, and specifically relates to a battery energy storage system based on distributed control and layout and an energy scheduling method thereof. Background technique [0002] In today's economic globalization, with the continuous advancement of science and technology, new energy sources are favored by countries all over the world. However, while developing and using new energy sources, the manifestations of energy storage technology are gradually developing in a diversified direction. At present, the most widely used are water storage charging technology and compressed air energy storage technology. Energy storage systems have a strong demand for renewable energy and traditional thermal power generation. The development and application of new energy requires the support of advanced technology and equipment, and the energy storage system has many lines, but the complete system solution is not yet ma...

AI Technical Summary

Problems solved by technology

Based on the fact that the battery modules are in series with each other and there is no isolation and blocking measures between the battery modules, once a problem such as short circuit or open circuit occurs in one of the battery modules, other adjacent battery modules will inevitably be affected. The operating efficiency gradually decreases, which eventually leads to the inability of the entire string of batteries to operate; because the battery module does not have a system protection function, once a fault such as a short circuit that easily causes the battery to heat up and high temperature occurs, the battery module is likely to go out of control and catch fire, causing incalculable disasters. loss

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