A monitoring device for battery energy storage system with reactive power regulation function

Abstract

The invention provides a monitoring device of a battery energy storage system with a reactive adjusting function. The monitoring device 11 comprises a renewable energy power generation device monitoring module 114, a storage battery monitoring module 115, a power distribution network connection module 112, a grid connection monitoring module 116, a center control module 117, a static var generator (SVG) monitoring module and a bus module 111, wherein the renewable energy power generation device monitoring module 114 is used for real-timely monitoring a renewable energy power generation device 12 in the battery energy storage system 10 and predicting power generation power of the renewable energy power generation device 12, the storage battery monitoring module 115 is used for real-timely monitoring a storage battery module 13 in an energy storage system 10 of a wind power plant, the power distribution network connection module 112 is used for real-timely obtaining operation conditions and related dispatch information of a power distribution network 20 from an adjusting and controlling center of the power distribution network 20, the grid connection monitoring module 116 is used for controlling the wind power plant energy storage system 10 to be connected with or isolated from the power distribution network 20, the center control module 117 is used for determining an operation strategy of the battery energy storage system 10 and sending instructions to the modules so as to execute a power supply strategy, the SVG monitoring module is used for real-timely monitoring an SVG module 14, and the bus module 111 is used for communication and contact of all modules of the monitoring device 11.

Description

Technical field [0001] The invention relates to a monitoring device of a battery energy storage system with a reactive power adjustment function. Background technique [0002] In recent years, under the dual pressure of energy demand and environmental protection, distributed power generation technology represented by photovoltaic, wind power and gas power generation has developed rapidly. Moreover, the emerging concept of microgrid has also been proposed along with the widespread use of distributed energy. However, due to the natural discontinuity of distributed energy sources, the stability of the system is gradually being threatened. In order to give full play to the advantages and benefits of renewable energy power generation, balance its random fluctuations, maintain system stability, improve power quality, and provide uninterrupted Power supply functions, etc., must be equipped with a certain capacity energy storage unit in the system at the same time. [0003] In the...

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Problems solved by technology

[0004] However, the cost of energy storage is high. Considering the economic cost of microgrid operation, the life of energy storage should be extended as much as possible while ensuring the safe operation of the microgrid system

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