Wind power random fluctuation based generalized load modeling method and apparatus

A generalized load and random fluctuation technology, applied in computing, electrical digital data processing, special data processing applications, etc., can solve problems that cannot be realized, cannot describe the random fluctuation characteristics of wind farm power, and random power fluctuations

Inactive Publication Date: 2015-10-21
HOHAI UNIV +1
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Problems solved by technology

However, the original generalized load modeling method only considers the impact of traditional thermal power and hydropower sources, and does not consider the impact of wind power access, let alone describe the random fluctuation characteristics of wind farm power
The power random fluctuation and its impact that need to be considered due to the connection of wind farms in the distribution network cannot be realized in the dynamic analysis of the power grid

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  • Wind power random fluctuation based generalized load modeling method and apparatus
  • Wind power random fluctuation based generalized load modeling method and apparatus
  • Wind power random fluctuation based generalized load modeling method and apparatus

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Embodiment Construction

[0024] 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.

[0025] 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.

[0026] combine figure 1 The schematic diagram of the structure o...

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Abstract

The invention provides a wind power random fluctuation based generalized load modeling method which comprises the steps of: (1) determining a generalized load model structure, wherein the generalized load model structure comprises a reactive compensation device, a static load, an induction motor load, an asynchronous generator, a power injection module and equivalent impedance of a power distribution network; (2) obtaining aggregation parameters of the asynchronous generator with a statistical synthesis method, and obtaining electric parameters of an equivalent asynchronous generator by performing capacity weighting aggregation on each asynchronous generator; (3) identifying parameters of a load model; (4) configuring a user-defined program and generating a dynamic link library; and (5) injecting power fluctuation data, and during transient analysis and small disturbance characteristic value analysis, shielding the power injection module and only considering dynamic characteristics of the asynchronous generator. When wind power random fluctuation based characteristics are subjected to medium and long-term dynamic analysis, the power injection module is activated for injecting power to a system in a time-varying current form.

Description

technical field [0001] The invention relates to the field of power system modeling and control, in particular to a generalized load modeling method and device considering random fluctuations of wind power. Background technique [0002] In power system simulation analysis, the low-voltage distribution network is usually treated as an equivalent load, and the commonly used load model is mainly in the form of a static load model plus an induction motor. When there are local small power sources connected to the distribution network side, the traditional load model cannot describe the equivalent load characteristics of the distribution network well, so a generalized load model including small power sources is proposed. The generalized load is different from the conventional electric load mainly in that it includes the power source, but it is still dominated by the load. [0003] In recent years, with the rapid development of wind power and other renewable energy power generation...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06Q50/06
Inventor 张毅明鞠平孙建华余一平陈军熊浩清金宇清朱骥云孙冉周冰张庆文李俊周王成庆刘晓波刘咏飞李洪宇
Owner HOHAI UNIV
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