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Wind power prediction deviation correction method and system based on electrochemical energy storage

A deviation correction and electrochemical technology, applied in the field of electrochemical energy storage, can solve problems such as difficult to achieve high accuracy in power prediction and fluctuation of wind power output, and achieve the effects of avoiding invalid charging and discharging, reducing grid impact, and improving service life

Pending Publication Date: 2022-03-01
CECEP WIND POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the intermittent and fluctuating characteristics of wind power output, it is difficult to achieve high accuracy in predicting power

Method used

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  • Wind power prediction deviation correction method and system based on electrochemical energy storage
  • Wind power prediction deviation correction method and system based on electrochemical energy storage
  • Wind power prediction deviation correction method and system based on electrochemical energy storage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Based on the above description, if figure 1 As shown, this embodiment provides a wind power prediction deviation correction method based on electrochemical energy storage, including the following steps:

[0079] 1) Obtain the short-term and medium-term forecast power P of the new energy station of the wind farm on that day fk ={P f1 ,P f2 ...,P fn} and the actual power P of the new energy station up to time k ak ={P a1 ,P a2, ...,P ak},k∈[1,n].

[0080] 2) Calculate the charge and discharge power range of the deviation between the predicted power and the actual power at time k+1 according to the obtained medium and short-term predicted power of the new energy station and the actual power of the new energy station.

[0081] 3) If the wind farm is limited at time k+1, it will be charged according to the state of charge of the electrochemical energy storage.

[0082] Specifically, during power-limited periods, the power grid does not conduct wind power prediction ...

Embodiment 2

[0097] This embodiment provides a wind power prediction deviation correction system based on electrochemical energy storage, including:

[0098] The data acquisition module is used to obtain the predicted power of the new energy station of the wind farm on that day and the actual power of the new energy station up to time k.

[0099] The calculation module is used to calculate the charging and discharging power range of the deviation between the predicted power and the actual power at time k+1 according to the acquired predicted power of the new energy station and the actual power of the new energy station.

[0100] The charging module in power-limiting mode is used to charge according to the state of charge of the electrochemical energy storage if the wind farm is limited in power at time k+1.

[0101] The charging and discharging module in the unrestricted power mode is used to charge and discharge the electrochemical energy storage according to the calculated charging and dis...

Embodiment 3

[0103] This embodiment provides a processing device corresponding to the electrochemical energy storage-based wind power forecast deviation correction method provided in Embodiment 1. The processing device may be a processing device for a client, such as a mobile phone, a notebook computer, a tablet computer, Desktop computer etc., to carry out the method of embodiment 1.

[0104] 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 run on the processing device is stored in the memory, and when the processing device runs the computer program, the method for correcting wind power prediction deviation based on electrochemical energy storage provided in Embodiment 1 is executed.

[0105] In some implementations, the memory may be a high-speed random access memory (RAM: Random Access Memory),...

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Abstract

The invention relates to a wind power prediction deviation correction method and system based on electrochemical energy storage, and the method is characterized in that the method comprises the steps: obtaining the prediction power of a new energy station of a wind power plant on the current day and the actual power of the new energy station up to a k moment; according to the obtained predicted power of the new energy station and the actual power of the new energy station, the charging and discharging power range of the deviation between the predicted power and the actual power at the k + 1 moment is calculated; if the power of the wind power plant is limited at the k + 1 moment, charging is carried out according to the charge state of electrochemical energy storage; if the power of the wind power plant is not limited at the k + 1 moment, the electrochemical energy storage is charged and discharged according to the calculated charging and discharging power range, the new energy station predicted power and the new energy station actual power are obtained again until all the assessment points on the current day are finished, and correction of the wind power plant predicted deviation is completed, and the method can be widely applied to the field of electrochemical energy storage.

Description

technical field [0001] The invention relates to the field of electrochemical energy storage, in particular to a wind power prediction deviation correction method and system based on electrochemical energy storage. Background technique [0002] In order to facilitate planning and optimize the supply and demand balance of the regional system, wind farms are currently required to report the next day’s wind power forecast data to the dispatching agency, and the time resolution of the reported data is 15 minutes, and different regions in China have issued different assessment rules. If the deviation between the predicted output of the station and the actual output does not meet the requirements, the station shall pay a fine. However, due to the intermittent and fluctuating characteristics of wind power output, it is difficult to achieve high accuracy in predicting power. [0003] At present, most wind farms have been equipped with electrochemical energy storage devices, the ener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/32H02J3/38H02J3/46
CPCH02J3/004H02J3/32H02J3/381H02J3/466H02J2300/28H02J2300/40Y02E10/76Y02E70/30
Inventor 杨尚丹杨宇凡张国月张迅
Owner CECEP WIND POWER