Active power distribution method of battery energy storage power station

A technology of active power and battery energy storage, applied in battery circuit devices, charging/discharging current/voltage regulation, circuit devices, etc., can solve problems such as the impact of battery life, reduce the number of startups and shutdowns, improve the acceptance capacity, and be easy to implement and the effect of mastering

Inactive Publication Date: 2015-03-11
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] From the perspective of battery energy storage, excessive charging and discharging will affect the life of the battery

Method used

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  • Active power distribution method of battery energy storage power station
  • Active power distribution method of battery energy storage power station
  • Active power distribution method of battery energy storage power station

Examples

Experimental program
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Embodiment

[0027] figure 1 It is a schematic diagram of an active power distribution method of a battery energy storage power station according to the present invention.

[0028] In this embodiment, the schematic diagram of the active power distribution of the battery energy storage power station, as shown in figure 1 As shown, it mainly includes battery unit, unit classification module and power distribution module; after the battery energy storage power station is in operation, its specific active power distribution method is as follows:

[0029] A method for distributing active power of a battery energy storage power station, comprising the following steps:

[0030] S1. Collect the SOC values ​​of all battery units in the battery energy storage power station and the output active power P at the current time t M real(t), M represents the Mth battery unit in the battery energy storage power station; and the total active power P of the grid-connected point in the battery energy storage...

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Abstract

The invention discloses an active power distribution method of a battery energy storage power station. SOC (state of charge) values and active power of battery units are acquired in real time, the battery units of the energy storage power station are classified, and charging and discharging ranges of each class of the battery units are calculated; according to the charging and discharging ranges of each class of the battery units, the charging and discharging regulating capacity of the battery units is calculated, and finally, distribution of the active power is performed on each battery unit according to the regulating capacity of the battery units. Thus, the energy storage power station responds to scheduling of a power grid through control on charging and discharging of the battery units, and the acceptable capacity of the power grid for intermittent renewable energy source power generation is increased; secondly, the battery units are classified according to real-time SOCs of the battery units, startup and shutdown times of the battery units can be reduced, the utilization rate of resources of the battery energy storage power station is increased, and service lives of the battery units are prolonged.

Description

technical field [0001] The invention belongs to the technical field of smart grids, and more specifically, relates to a method for distributing active power of a battery energy storage power station. Background technique [0002] Energy storage is an effective technology to improve the grid's ability to accept intermittent renewable energy generation. Battery energy storage has become one of the priority development directions because of its unique performance. In recent years, various demonstration applications and grid-connected operation of 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 of intermittent new energy power sources. Therefore, the proportion of large-scale energy storage and small-scale distributed energy storage power stations in the future distribution netw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/32
CPCH02J3/32H02J7/007H02J2207/10
Inventor 李凯邹见效梁政锋李梦书徐红兵马兰
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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