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Method and system for controlling energy storage power command in wind storage system

A control method and wind power prediction technology, applied in the field of wind farms, can solve problems such as the difficulty of direct calculation and increase the instability of the output power of the wind storage system, so as to improve the stable operation ability, enhance the controllability and transparency, The effect of improving the response speed

Active Publication Date: 2022-06-24
CECEP WIND POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] From the expression of the power dominance model of the above-mentioned wind storage system, it can be seen that the command value of the energy storage output power is affected by various uncertain factors, and it is difficult to directly calculate it, which increases the instability of the output power of the wind storage system

Method used

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  • Method and system for controlling energy storage power command in wind storage system
  • Method and system for controlling energy storage power command in wind storage system
  • Method and system for controlling energy storage power command in wind storage system

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Experimental program
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Embodiment 1

[0041] like figure 1 As shown, this embodiment provides a method for controlling energy storage power commands in a wind storage system, including the following steps:

[0042]1) The composite fractional low-pass filter is used to filter the obtained ultra-short-term wind power prediction value of the wind storage system to obtain the wind storage scheduling command at the next moment, specifically:

[0043] 1.1) Obtain the ultra-short-term wind power prediction value from the ultra-short-term wind power prediction system, and perform weighting processing.

[0044] 1.2) A composite fractional low-pass filter is used to filter the weighted ultra-short-term wind power prediction value to obtain the wind storage scheduling instruction at the next moment.

[0045] Specifically, the wind storage system is formed after the wind farm is configured with an energy storage system.

[0046] Specifically, the ultra-short-term wind power prediction is to predict the active power of the w...

Embodiment 2

[0060] This embodiment provides a control system for energy storage power commands in a wind storage system, including:

[0061] The wind storage dispatching instruction determination module is used for filtering the ultra-short-term wind power prediction value by using a composite fractional low-pass filter to obtain the wind storage dispatching instruction at the next moment.

[0062] The energy storage output power command value determination module is used to use a rolling predictor to determine the energy storage output power command value of the wind storage system at the next moment in real time according to the wind storage scheduling command at the next moment.

Embodiment 3

[0064] This embodiment provides a processing device corresponding to the method for controlling an energy storage power command in a wind storage system provided in Embodiment 1. The processing device may be a processing device used for a client, such as a mobile phone, a notebook computer, a tablet computer, a A desktop computer, etc., to execute the method of Embodiment 1.

[0065] The processing device includes a processor, a memory, a communication interface and a bus, and the processor, the memory and the communication interface are connected through the bus to complete mutual communication. A computer program that can be run on the processing device is stored in the memory. When the processing device runs the computer program, the control method for the energy storage power instruction in the wind storage system provided in Embodiment 1 is executed.

[0066] In some implementations, the memory may be a high-speed random access memory (RAM: Random Access Memory), and may ...

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Abstract

The present invention relates to a control method and system for energy storage power command in a wind storage system, which is characterized in that it includes: using a compound fractional low-pass filter to filter the obtained ultra-short-term wind power prediction value of the wind storage system, Obtain the wind storage dispatch instruction at the next moment; adopt the rolling predictor, according to the wind storage dispatch instruction at the next moment, determine the energy storage output power instruction value of the wind storage system at the next moment in real time, and the present invention can suppress the impact of various noise disturbances The impact of the wind storage scheduling command, thereby enhancing the controllability and transparency of the joint operation of the wind storage system, can be widely used in the field of wind farms.

Description

technical field [0001] The invention relates to the field of wind farms, in particular to a method and system for controlling energy storage power commands in a wind storage system. Background technique [0002] The randomness and volatility of wind speed and wind direction make the controllability of the output power of the wind farm weak, which seriously affects the on-grid electricity of the wind farm and the stability of the local power system. [0003] In order to improve the controllability of the output power of wind farms, it is often necessary to support a certain scale of energy storage in the wind farm, and use the fast charging and discharging characteristics of the energy storage to suppress the fluctuation of the output power of the wind farm. At this time, how to calculate the command value of energy storage charging and discharging power has become an urgent problem to be solved in the wind storage system. The following formula is the expression of the wind ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/28H02J3/01H02J3/38
CPCH02J3/004H02J3/28H02J3/01H02J3/381H02J2300/28Y02E40/40
Inventor 曹彬张迅杨尚丹其他发明人请求不公开姓名
Owner CECEP WIND POWER