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A Method for Determining Theoretical Power of Wind Farm Based on Actual Power Curve Fitting

A technology of theoretical power and actual power, applied in the direction of electrical digital data processing, data processing applications, special data processing applications, etc., can solve the problems of complex calculations and low overall precision, and achieve high recovery precision, strong applicability, and easy implementation Effect

Active Publication Date: 2019-02-05
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

This method can realize the theoretical power calculation of wind farms, and has a wide range of applications. As long as there are basic data such as wind farm data and wind measurements, the theoretical power calculations of wind farms can be realized. When the accuracy requirements are low, numerical weather can be directly used without wind measurement data. Forecast data is also available, but the overall accuracy of this method is relatively low, and the recovery accuracy is also affected by seasonal changes and changes in topography and landforms near the wind farm, and the calculation is complicated

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  • A Method for Determining Theoretical Power of Wind Farm Based on Actual Power Curve Fitting
  • A Method for Determining Theoretical Power of Wind Farm Based on Actual Power Curve Fitting
  • A Method for Determining Theoretical Power of Wind Farm Based on Actual Power Curve Fitting

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Embodiment Construction

[0065] The specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0066] combine figure 1 and figure 2 As shown, a method for determining the theoretical power of a wind farm based on actual power curve fitting, the method includes:

[0067] (1) read wind farm data; step (1) read wind farm data includes: wind farm fan data D T , real-time wind data V T , fan operating data N o and scheduling control instruction N c ;

[0068] Among them, the wind farm fan data D T Including fan actual power data P T and nose wind speed data V tur ; The fan data D of the wind farm T and real-time wind data V T The frequency is 5min / point, and the data length is ≥3 months.

[0069] (2) Preprocessing the wind farm data; due to reasons such as data transmission, storage and management, the basic data obtained from the wind farm or dispatching organization has data errors, loss, etc., so step (2) preproces...

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Abstract

An actual power curve fitting based theoretical power determination method for a wind power plant comprises: reading wind power plant data; preprocessing the wind power plant data; calculating wind speed at the height of a wheel hub of a fan; filtering preprocessed fan power data to remove fault data, establishing a sample data set for actual power curve fitting, and dividing the sample data set; calculating theoretical power of the fan; adopting a correlation coefficient weighting method for correcting the theoretical power of the fan; obtaining theoretical power of the wind power plant; and evaluating theoretical power recovery precision through a correlation coefficient and a secondary center distance, and generating a data recovery quality factor. With the method, the theoretical power recovery precision is high and the tedious and complicated calculation is avoided; and the method is simple to operate, easy to realize and high in applicability.

Description

technical field [0001] The invention relates to a determination method, in particular to a method for determining theoretical power of a wind farm based on actual power curve fitting. Background technique [0002] As an important part of renewable energy, wind energy is currently one of the most developed renewable energy sources. my country is rich in wind energy resources. In 2011, the cumulative installed capacity of wind power in my country reached 62.36GW. By 2020, my country's wind power commercial operation capacity will reach 200GW-250GW. Carrying out research on wind power related technologies and making breakthroughs is of great practical significance to the healthy and sustainable development of the wind power industry. [0003] my country's wind power is mainly concentrated in the three north regions and the eastern coast. The eastern coastal area is located in the load center area, with strong power demand and strong grid structure, and the impact of large-sc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06Q50/06
Inventor 王铮刘纯耿天翔冯双磊王勃王伟胜丁茂生姜文玲赵艳青葛俊卢静张菲车建峰杨红英靳双龙胡菊马振强宋宗朋
Owner CHINA ELECTRIC POWER RES INST
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