Power grid-friendly wind power plant energy storage capacity optimal configuration method

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

Active Publication Date: 2019-12-03
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

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  • Power grid-friendly wind power plant energy storage capacity optimal configuration method
  • Power grid-friendly wind power plant energy storage capacity optimal configuration method
  • Power grid-friendly wind power plant energy storage capacity optimal 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 invention provides a power grid-friendly type wind power plant energy storage capacity optimal configuration method. Fluctuation requirements of a power grid on the grid-connected power of the wind power plant for 1min and 10min are equivalent to slope signals with a fluctuation limit value as the limit in a corresponding time; a preliminary grid-connected power bandwidth meeting the grid-connected requirement is obtained, the output power of the wind power plant is decomposed by using wavelet packet decomposition according to the bandwidth to obtain preliminary grid-connected power, an optimal space range is further obtained according to the preliminary grid-connected power and the output power of the wind power plant, optimization is carried out by using a particle swarm algorithm according to a target function, the final grid-connected power is obtained, and energy storage equipment is configured. The method provided by the invention can well solve the problem of over-configuration of the energy storage equipment of the wind power plant.

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 Applications(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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