Wind turbine generator set engine room transfer function subregional fitting method

A nacelle transfer function and wind turbine technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as poor practicability, complicated calculations, and many wind speed partitions

Inactive Publication Date: 2015-07-22
CHINA DATANG CORP RENEWABLE POWER
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Problems solved by technology

And under the premise of ensuring high accuracy, the transfer function (NTF) determined by the IEC61400-12-2:2013 standar...

Method used

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  • Wind turbine generator set engine room transfer function subregional fitting method
  • Wind turbine generator set engine room transfer function subregional fitting method
  • Wind turbine generator set engine room transfer function subregional fitting method

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Embodiment 1

[0065] Such as Figure 5 The distribution of units near the wind measuring tower in a certain wind field is shown as follows: the wind measuring tower is located at 132.45 degrees on the southeast side of 16#, with a distance of 726.48 meters; the wind measuring tower is located at 101.12 degrees on the southeast side of 17#, with a distance of 491.94 meters; It is located at 45.59 degrees on the northeast side of 18#, with a distance of 594.8 meters; the wind measuring tower is located at 18.55 degrees on the northeast side of 19#, with a distance of 1625.17 meters. The reasons for choosing 17# unit as the target unit are:

[0066] 1) The unit is the unit closest to the anemometer tower in the wind field;

[0067] 2) The unit is in the downwind direction of the anemometer tower and in the main wind direction of the wind field; the main wind direction of the wind field can be obtained from the wind resource data in the early stage of the wind field, and can also be judged fro...

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Abstract

The invention discloses a wind generator set engine room transfer function subregional fitting method. The method comprises the steps of 1, determining a target set, and collecting running data of a wind measurement mast and the target set within the same time; 2, determining the hub height H of the target set and calculating average wind speed data of the wind measurement mast at the height H; 3, utilizing IEC standards and the average wind speed data calculated in the step 2 as the basis, and removing abnormal running data in the step 1; 4, calculating a transfer function of an engine room of the target set, and correcting the transfer function, wherein the step 4 comprises the substep 4-1 of conducting fitting on a low wind speed area and a high speed wind speed area which are obtained by using the rated wind speed value as the limit and the substep 4-2 of calculating a fitting function order of the low wind speed area and a fitting function order of the high wind speed area respectively. By correcting the wind speed of the engine room, the wind speed of free flow at the center of a wind generator set wind wheel is obtained, and a power curve of the performance of the set can be more objectively reflected.

Description

technical field [0001] The invention relates to the technical field of performance evaluation and power characteristic testing of a wind power generating set, in particular to a partition fitting method for a transfer function of a wind power generating set nacelle. Background technique [0002] The actual power curve of the unit is an important tool and means for performance evaluation and optimization of wind turbines. By analyzing the actual power curve of the unit and comparing it with the theoretical curve, the difference between the actual power and the ideal power of the unit at each wind speed range can be obtained, thereby guiding the performance evaluation and optimization of the unit. At present, the wind speed used when drawing the power curve of the unit is mainly the actual wind speed measured by the anemometer of the unit. Since the anemometer is installed on or near the nacelle of the wind turbine unit under test, the wind speed measured by the anemometer at ...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 张磊辛克锋李清义
Owner CHINA DATANG CORP RENEWABLE POWER
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