A method for controlling the active power of multiple energy-storage power stations

A technology of energy storage power station and active power, applied in the field of energy storage power station

Active Publication Date: 2014-08-20
STATE GRID CORP OF CHINA +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The scheduling of energy storage units is different. The schedulability of energy storage units is not only affected by its regulated power, but also by its schedulable capacity. Therefore, when scheduling energy storage units, not only its schedulable power, More consideration should be given to its schedulable capacity. At the same time, the impact on the health of the energy storage battery should also be considered when scheduling the energy storage battery, so as to prolong the service life of the energy storage battery as much as possible. There are few researches on this aspect at home and abroad.

Method used

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  • A method for controlling the active power of multiple energy-storage power stations
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  • A method for controlling the active power of multiple energy-storage power stations

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Embodiment Construction

[0044] The specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0045] like figure 1 as shown, figure 1It is a schematic diagram of the evaluation index of the multi-energy storage power station. The evaluation index of the evaluation model of the active power control method of the multi-energy storage power station provided in this embodiment includes the health degree of the energy storage station, the battery SOC value of the energy storage station, and the rated capacity of the energy storage station. and rated power.

[0046] Wherein, the characteristic parameters of the health degree of the energy storage power station include the battery temperature t, the battery voltage U and the battery current I value.

[0047] like figure 2 as shown, figure 2 It is the quantification function diagram of each index of the evaluation model of the multi-energy storage power station;

[0048] f...

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Abstract

The invention provides a method for controlling the active power of multiple energy-storage power stations. The method comprises the following steps: I) determining evaluation indexes of the multiple energy-storage power stations; II) establishing evaluation models of the energy-storage power stations according to the output state of the energy-storage power stations; and III) ranking the priority of each energy-storage power station and determining output combination of the multiple energy-storage power stations and the output state of each energy-storage power station according to the energy requirement state of a power grid at the moment. The method is used for overcoming the defects that when scheduling is carried out in a convention energy-storage power station, the schedulability capacity of an energy storage battery and battery health degree fail to be taken into consideration and the like; and therefore, the running characteristics of the energy-storage power station are taken into comprehensive consideration, and the comprehensive evaluation model of the energy-storage power station is established.

Description

technical field [0001] The invention relates to a method in the field of energy storage power stations, in particular to a method for active power control of multiple energy storage power stations. Background technique [0002] With the vigorous development of smart grid and renewable energy power generation, large-scale energy storage technology is becoming more and more mature, and its application in power system will also increase. While energy storage technology is being applied on a large scale, due to the different characteristic parameters of each energy storage battery, the operation conditions of different battery packs in the same energy storage power station are different, and the operation conditions of different energy storage power stations are also different. This makes the power grid face certain difficulties when dispatching active power to energy storage power stations, such as: the SOC of each energy storage power station is different at the same time, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/32
Inventor 李建林吴小刚田立亭丁冬
Owner STATE GRID CORP OF CHINA
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