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Wind power utilization rate calculation method based on running data

A technology of operating data and calculation methods, applied in the field of wind power generation and distribution, can solve problems such as large calculation errors, and achieve the effect of accurate calculation

Active Publication Date: 2017-11-07
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

The existing calculation methods generally use the factory power curve of the fan directly as the theoretical power calculation curve, but because the factory power curve is obtained under strict test conditions, it is easily affected by changes in weather conditions, terrain, and the output characteristics of the fan itself. Therefore, the calculation error is large

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  • Wind power utilization rate calculation method based on running data
  • Wind power utilization rate calculation method based on running data
  • Wind power utilization rate calculation method based on running data

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Embodiment Construction

[0086] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0087] A certain wind farm has 30 1.5MW wind turbines, the sampling period is 5min / point, and the research data is collected from January 1, 2015 to December 31, 2015.

[0088] Such as figure 1 Shown is a schematic diagram of the implementation steps of the wind power utilization calculation method, figure 2 For the collected raw wind speed, power, and wind rotor speed data of a single machine, image 3 For the collected original wind speed and power data of a single machine, a calculation method of wind power utilization based on operating data specifically includes the following steps:

[0089] Step 1: Preliminary screening and elimination of abnormal data based on the operating principle of the fan. The smaller the proportion of abnormal data in the total data, the higher the accuracy of abnormal data elimination using data preprocessing methods. Accor...

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Abstract

The invention discloses a wind power utilization rate calculation method based on running data. The method comprises the following steps of 1, conducting preliminary screening and eliminating on abnormal data based on a fan running principle; 2, adopting a quartile method of parameter optimization to further eliminate the abnormal data; 3, adopting a clustering algorithm to deeply eliminate the abnormal data; 4, adopting segmental Hermite interpolation to reconstruct missing data; 5, establishing a theoretical power calculation model of a wind power unit with a corresponding model number and conducting wind power plant theoretical power restoration; 6, calculating wind power utilization rate corresponding indexes. Based on fan running data recorded by a wind power plant SCADA (Supervisory Control And Data Acquisition) system, and through the combination of an effective data quality control means, a wind power plant theoretical power restoration algorithm is provided, which provides a reasonable path for calculation of the wind power utilization rate, and also provides scientific basis for wind power running condition evaluation and planning and development of the wind power and power grid.

Description

technical field [0001] The invention belongs to the technical field of wind power generation and distribution, and relates to a calculation method of wind power utilization rate based on operation data. Background technique [0002] With the rapid development of wind power, its intermittent and random characteristics have led to the increasingly serious phenomenon of wind power curtailment, seriously affecting the evaluation of the real output of wind farms and the scientific planning of wind power and power grid development. Wind power curtailment is based on the operating principle of the power grid. During the period of wind power generation, in order to ensure the safe and stable operation of the power grid, the output of wind power is limited to a certain extent. How to restore the theoretical output of wind power during the period of wind curtailment through technical means, improve and improve the theoretical power recovery accuracy of wind farms, and then calculate t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20Y02E60/00
Inventor 胡阳王娟刘吉臻
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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