Wind power penetration limit acquisition method considering wind speed fluctuation characteristics

A technology for penetrating power and wind speed fluctuations, applied in computing, electrical digital data processing, special data processing applications, etc., can solve the problem that the solution model does not fully reflect the randomness of wind power output, achieve good engineering application prospects, improve flexibility Effects of Sexuality and Adaptation

Inactive Publication Date: 2015-12-16
HOHAI UNIV +3
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  • Abstract
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  • Application Information

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Problems solved by technology

However, both of them adopt the artificial approximation assumption, that is, the wind speed obeys the Weibull distribution, and the solution model does not fully reflect the strong randomness of wind power output.

Method used

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  • Wind power penetration limit acquisition method considering wind speed fluctuation characteristics
  • Wind power penetration limit acquisition method considering wind speed fluctuation characteristics
  • Wind power penetration limit acquisition method considering wind speed fluctuation characteristics

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Embodiment Construction

[0020] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0021] Aspects of the invention are described in this disclosure with reference to the accompanying drawings, which show a number of illustrated embodiments. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be understood that the various concepts and embodiments described above, as well as those concepts and embodiments described in more detail below, can be implemented in any of a number of ways, which should be the concepts and embodiments disclosed by the present invention and not Not limited to any implementation. In addition, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.

[0022] According to the embodiment of the present invention, a wi...

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Abstract

The invention provides a wind power penetration limit acquisition method considering wind speed fluctuation characteristics. The wind power penetration limit acquisition method comprises the steps of using a stochastic differential equation for simulating the wind speed and dynamic fluctuation characteristics thereof; by calculating the fluctuation characteristics of the probability density of the amount of change in the wind speed in the time domain, establishing a wind speed model conforming to the real wind speed change rule; then, on the basis of the wind speed fluctuation characteristics, establishing a wind power penetration limit calculation model; and solving the wind power penetration limit calculation model to obtain the maximum power penetration limit of a system. The invention can be used for more accurately reflecting the limit value of the maximum installed capacity of a wind power plant. An out-of-limit wind power installed capacity is excluded on the basis of existing deterministic analysis, such that at a certain unit output adjustable margin, random fluctuations of the wind power output will not overrun the obtained limit value, the calculation is more reasonable, out-of-limit risks due to overlarge wind power grid-connected capacity planning are effectively avoided, and the security and reliability of the overall wind power grid-connected system are improved.

Description

technical field [0001] The invention relates to the field of renewable energy power generation, and relates to a method and system for obtaining a wind power penetration power limit in consideration of wind speed fluctuation characteristics. Background technique [0002] Under the background of the rapid development of renewable energy, the proportion of wind power in the power system is gradually increasing. According to the "Twelfth Five-Year Plan", the wind power grid-connected installed capacity will reach 1×10 in 2015 8 kW, will reach 2×10 in 2020 8 kW. However, with the increasing capacity of wind power connected to the grid, the system's own peak-shaving capability, grid transmission space and safety margin have become factors restricting the grid's ability to accommodate wind power; on the other hand, the wind speed and the random fluctuation characteristics of the wind power The operation of wind power brings impact and influence, and the connection of wind power...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/06G06F17/50
CPCY02E40/70Y04S10/50
Inventor 吴峰孔卫亚周宇杨晓梅黄俊辉王海潜谢珍建乔黎伟祁万春谈健赵宏大陈永祥鞠平金宇清
Owner HOHAI UNIV
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