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A grid-friendly wind farm energy storage capacity optimization configuration method

A technology of energy storage capacity and optimized configuration, applied in wind power generation, single grid parallel feeding arrangement, reducing/preventing power oscillation, etc., can solve problems such as over-provisioning

Active Publication Date: 2021-04-30
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

[0005] The purpose of the present invention is to propose a grid-friendly wind farm energy storage capacity optimization configuration method to solve the over-allocation problem existing in conventional energy storage capacity configuration methods

Method used

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  • A grid-friendly wind farm energy storage capacity optimization configuration method
  • A grid-friendly wind farm energy storage capacity optimization configuration method
  • A grid-friendly wind farm energy storage capacity optimization configuration method

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Embodiment Construction

[0042] The present invention proposes a grid-friendly wind farm energy storage capacity optimization configuration method, such as figure 1 As shown, it includes two parts: using wavelet packet decomposition to determine the preliminary grid-connected power and using particle swarm optimization to optimize the grid-connected power. The specific implementation steps are:

[0043] 1) If the wind farm output power fluctuates for 1min and 10min, it is equivalent to a ramp signal with a transition time of 1min or 10min and a transition amplitude of the fluctuation limit, and the greater of the two equivalent transition times, that is, 10min, can be obtained Preliminary grid-connected power bandwidth:

[0044]

[0045] where f 0 is the initial grid-connected power bandwidth, T r is the transition time of the equivalent ramp signal.

[0046] 2) The number of layers of wavelet packet decomposition is obtained from the initial grid-connected power bandwidth and the ...

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Abstract

The present invention proposes a grid-friendly wind farm energy storage capacity optimization configuration method, which is equivalent to the 1min and 10min fluctuation requirements of the grid for wind farm grid-connected power as a slope signal limited to the fluctuation limit within the corresponding time, which is satisfied The initial grid-connected power bandwidth required for grid-connection, based on this bandwidth, the wind farm output power is decomposed by wavelet packet decomposition to obtain the preliminary grid-connected power. The objective function is optimized to obtain the final grid-connected power and configure energy storage equipment. The method proposed by the invention can well solve the problem of over-provisioning of wind farm energy storage equipment.

Description

technical field [0001] The invention belongs to the field of energy storage capacity configuration for new energy power generation, and in particular relates to an optimal configuration method for power grid-friendly wind farm energy storage capacity. Background technique [0002] In recent years, environmental problems have become increasingly serious. In order to achieve the Paris Climate Agreement, the global temperature rise will be limited to less than 2 degrees Celsius, the decarbonization of the global energy system has accelerated, and new energy represented by wind power has developed rapidly. However, wind power is inherently volatile and uncertain. Large-scale wind power grid integration will bring challenges to the safe and stable operation of the power grid. As one of the effective ways to stabilize wind power fluctuations, energy storage systems can improve load response capabilities and cut peaks and fill valleys. , to improve the stability of the power system...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02J3/24H02J3/48
CPCH02J3/24H02J3/48Y02E10/76
Inventor 王玮陈鹏
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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