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Reactive power distribution method for battery energy storage power station

A technology of power distribution and battery energy storage, which is applied in the direction of single-network parallel feeding arrangement, etc.

Inactive Publication Date: 2016-06-22
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are currently very few patents, documents, and technical reports on the reactive power distribution of battery energy storage power stations, which require in-depth research and exploration

Method used

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  • Reactive power distribution method for battery energy storage power station
  • Reactive power distribution method for battery energy storage power station
  • Reactive power distribution method for battery energy storage power station

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Embodiment

[0037] figure 1 It is a realization block diagram of the reactive power distribution method of the battery energy storage power station of the present invention. Such as figure 1 As shown, the realization of the reactive power distribution method of the battery energy storage power station of the present invention needs to be equipped with a unit classification module and a reactive power calculation module, and its specific steps include:

[0038] S1: The unit classification module collects the real-time active power P of each unit of the battery energy storage power station in the current control period t n , n represents the serial number of the unit, the value range is n=1,2,...,N, N represents the number of units, according to the real-time active power P n To classify the unit, the classification method is as follows:

[0039] A. When P n ≠0, that is, the nth unit has active power output, and the nth unit is regarded as "active unit", which is defined as the first ca...

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Abstract

The invention discloses a method for distributing reactive power of a battery energy storage power station. Firstly, the units are classified according to the real-time active power of each unit of the battery energy storage power station, and then according to the reactive power scheduling command value and classification results, the classification calculation is carried out. The maximum output reactive power value of each unit is used to distribute reactive power to each unit in the entire battery energy storage power station. Combining the real-time working status of each energy storage unit in the battery energy storage power station, the present invention can safely, stably and conveniently realize the reactive power distribution of the battery energy storage power station, and also takes into account the technology of reactive power response and service life improvement of energy storage equipment Effect.

Description

technical field [0001] The invention belongs to the technical field of battery energy storage power stations, and more specifically relates to a method for distributing reactive power of battery energy storage power stations. Background technique [0002] In recent years, demonstration applications and grid-connected operations of various battery energy storage power stations have been carried out at home and abroad. Theory and practice have proved that the introduction of large-scale battery energy storage power stations can effectively improve the operation performance and regulation ability of intermittent new energy power sources, and help to enhance the ability to connect to the grid. It can be predicted that the proportion of large-scale energy storage and small-scale distributed battery energy storage power stations in the future distribution network will continue to increase, which will have a positive impact on the development of the future power grid. [0003] Wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/50
CPCH02J3/50
Inventor 李凯郑宏邹见效梁政锋李梦书
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA