Wind power fluctuation stabilizing method based on improved revolving door algorithm
A technology of wind power fluctuation and revolving door algorithm, which is applied in wind power generation, reduction/prevention of power oscillation, calculation, etc., can solve problems such as irregular movement of battery units, poor system operation performance, and aggravated grid-connected power, etc., to achieve stability Effects of wind power fluctuation, safe and stable grid connection, and improved economy
Active Publication Date: 2021-08-24
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology
However, if the battery energy storage system does not adopt a reasonable control strategy, it will lead to irregular actions of the battery units, which will not only have no stabilization effect, but will aggravate the fluctuation of grid-connected power, resulting in poor operating performance of the system.
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[0078] specific implementation plan
[0079] In order to better understand the purpose, technical solution and technical effect of the present invention, the present invention will be further explained below in conjunction with the accompanying drawings.
[0080] The present invention proposes a wind power fluctuation stabilization method based on the improved revolving door algorithm, with figure 1 It is a flowchart of the present invention, and its implementation flow includes the following detailed steps.
[0081] Step 1 Based on the historical wind power, use the adaptive beetle whisker algorithm to find the global optimal compression offset E of the revolving door algorithm:
[0082] 1) Initialization of the parameters of the beetle whisker algorithm
[0083] Set the initial step size (maximum step size), maximum number of iterations, step size parameters a and b;
[0084] 2) Determine the orientation of the beetles and normalize them
[0085]
[0086] In the formu...
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The invention discloses a wind power fluctuation stabilizing method based on an improved revolving door algorithm. The method comprises the following steps of: searching a global optimal compression offset of a revolving door algorithm by utilizing a self-adaptive beetle antennae algorithm; using an improved revolving door algorithm and a linear interpolation method to obtain a wind power preliminary characteristic trend; correcting the initial characteristic trend in real time at the characteristic moment and the actual wind power sudden change moment; dividing an energy storage system into a battery pack 1 and a battery pack 2, the battery pack 1 stabilizing the deviation between the corrected characteristic trend and the actual wind power, and the battery pack 2 stabilizing the deviation between the corrected characteristic trend and the wind power integration power instruction. According to the method, preliminary extraction and real-time correction of the wind power characteristic trend are completed, the energy storage systems are grouped, the service life loss of battery energy storage is reduced while wind power fluctuation is effectively stabilized, and the operation economy of the energy storage systems is improved.
Description
technical field [0001] The invention relates to the field of power systems, in particular to a method for smoothing wind power fluctuations. [0002] technical background [0003] Wind energy, as a clean and renewable energy, has received high-speed attention in our country. With the proposal of my country's "30.60" carbon peak carbon neutrality goal, wind power is bound to be connected to the grid on a larger scale. However, wind energy itself is highly volatile and uncontrollable, so the output power of wind farms may fluctuate violently within a short time interval. This phenomenon is called a wind power ramp event. The sudden increase or decrease of wind power will lead to fluctuations in the frequency of the power grid, seriously affecting the stability and safety of the power system operation, and even lead to the collapse of the power system under extreme conditions, resulting in large-scale power outages. Therefore, how to effectively stabilize the output power of w...
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IPC IPC(8): H02J3/24H02J3/32H02J3/38G06F30/20G06T3/40G06Q50/06
CPCH02J3/241H02J3/32H02J3/381G06F30/20G06T3/4007G06Q50/06H02J2300/28G06F2113/06G06F2119/06Y02E70/30Y02E10/76
Inventor 余洋陈东阳
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)