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Wind energy storage system wide area optimizing configuration method

An optimized configuration, wide-area technology, applied in wind power generation, energy storage, greenhouse gas reduction and other directions, can solve problems such as quantitative analysis of uncurrent power flow indicators

Active Publication Date: 2013-04-17
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology

It combines the cost of energy storage, but it is still limited to smoothing wind power fluctuations, and does not quantify the power flow indicators of the system after wind power is connected to the grid

Method used

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  • Wind energy storage system wide area optimizing configuration method
  • Wind energy storage system wide area optimizing configuration method
  • Wind energy storage system wide area optimizing configuration method

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Embodiment Construction

[0058] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0059] This embodiment provides a method for wide-area optimal configuration of a wind / storage system, which is characterized in that the quantitative ability of the system to accept wind power is evaluated through a comprehensive assessment of the voltage stability and voltage quality after the wind power is connected to the grid. Schematic diagram of quantitative calculation of wind power capacity of the grid figure 1 As shown, after the simulation calculation, the quantitative acceptance capacity is determined by the static voltage stability, the total deviation of the system voltage and the total flicker margin of the system voltage, and the quantitative acceptance capacity changes with the wind power. figure 2 As shown, the variation range of the quantitative acceptance capacity is (-∞, 1]. In order to improve the ...

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Abstract

The invention discloses a wind energy storage system wide area optimizing configuration method, which is characterized in that the quantization ability of wind electricity admitted by a system is evaluated through comprehensive checking on voltage stability and voltage quality after wind power integration; an energy storage system is assessed for improving the wind electricity quantization admitting ability; the capacity of the energy storage system is determined according to different requirements of the admitting ability; and wide area optimizing distribution points and wide area selection points are carried out by the energy storage system based on a second order network loss sensitivity principle. With the adoption of the wind energy storage system wide area optimizing configuration method, various technical indexes are considered after the wind power integration; customization of the capacity of the energy storage system is comprehensively guided; and through the wide area configuration of the energy storage system based on the network loss sensitivity, the voltage stability of the system after the wind power integration is further enhanced, and the corresponding voltage quality is improved.

Description

technical field [0001] The invention relates to the field of new energy, in particular to a method for wide-area optimal configuration of a wind storage system. Background technique [0002] With the rapid development of wind power generation, the decentralized development of small-scale wind power and local access to the power supply system are gradually transitioning to the centralized development of large-scale wind power and integration into the transmission system. Fluctuation; line flow overload, that is, static voltage stability; and voltage quality problems such as voltage deviation and voltage flicker, as for harmonic problems that cannot be solved by energy storage technology, they will not be considered. Due to its flexible "swallowing" and "spitting" characteristics of electric power, energy storage technology can meet the requirements of power system power balance in real time, thereby solving the corresponding technical problems after wind power is connected to...

Claims

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Application Information

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IPC IPC(8): H02J3/28
CPCY02E10/76Y02E70/30
Inventor 李建林熊雄修晓青杨水丽惠东
Owner CHINA ELECTRIC POWER RES INST
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