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Monitoring method for battery energy storage system with reactive power regulation function

A battery energy storage system and functional technology, applied in flexible AC transmission system, reactive power adjustment/elimination/compensation, electrical components, etc., can solve the problem of high energy storage cost, and achieve the effect of improving safety and service life

Inactive Publication Date: 2015-04-22
YANTAI POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Monitoring method for battery energy storage system with reactive power regulation function
  • Monitoring method for battery energy storage system with reactive power regulation function
  • Monitoring method for battery energy storage system with reactive power regulation function

Examples

Experimental program
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Embodiment Construction

[0075] figure 1 It shows a battery energy storage system 10 with reactive power regulation function. The system 10 includes: renewable energy power generation equipment 12, battery modules 13, SVG modules 14, for connecting the energy storage system 10 with the power distribution network 20 Connected and isolated AC / DC bidirectional converter module one 16, DC bus, AC / DC bidirectional converter module two 15 for connecting renewable energy power generation equipment 12 and the DC bus, and monitoring device 11.

[0076] See figure 1 The monitoring device 11 includes: a renewable energy power generation equipment monitoring module 114, which is used to monitor the renewable energy power generation equipment 12 in the battery energy storage system 10 in real time, and predict the power generation of the renewable energy power generation equipment 12; battery monitoring The module 115 is used to monitor the battery module 13 in the wind farm energy storage system 10 in real time; th...

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Abstract

The invention provides a monitoring method for a battery energy storage system with the reactive power regulation function. The monitoring method comprises the steps that 1, a renewable energy power generation equipment monitoring module obtains running data of renewable energy power generation equipment in real time and stores the data; 2, according to the running data of the renewable energy power generation equipment, the output power of the renewable energy power generation equipment within the future preset time is predicted, and the reactive power, capable of being output, of a SVG module is predicted in real time; 3, the SOC of a storage battery module is detected and obtained in real time, and parameters and scheduling information of a power distribution network are obtained in real time; 4, optimal control over the battery energy storage system is achieved with active demands and reactive demands in scheduling information of the power distribution network, the current storage battery energy storage SOC, the future renewable energy power generation equipment output power and the reactive power, capable of being output, of the SVG module as constraint conditions.

Description

Technical field [0001] The invention relates to a monitoring method of a battery energy storage system with a reactive power adjustment function. Background technique [0002] In recent years, under the dual pressures of energy demand and environmental protection, distributed power generation technologies represented by photovoltaic, wind power and gas power generation have developed rapidly. In addition, the emerging concept of microgrid is also proposed with the widespread use of distributed energy. However, due to the natural discontinuity of distributed energy, 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 For power supply functions, a certain capacity energy storage unit must be equipped in the system at the same time. [0003] In the application of microgrid e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/28H02J3/38H02J3/18
CPCH02J3/18H02J3/28H02J3/382Y02E40/10
Inventor 肖会
Owner YANTAI POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER
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