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Method for detecting grid-connected performance of 60hz wind turbines in 50hz power grid

A wind turbine, 50hz technology, applied in the field of detection of wind turbine grid-connected performance, can solve the problem of high cost

Inactive Publication Date: 2011-12-14
GUODIAN UNITED POWER TECH
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Problems solved by technology

[0004] Although the above-mentioned detection method can realize the inspection and detection of the grid-connected performance of 60Hz wind turbines in mainland China, the cost is very high. How can we create a method that uses the characteristics of wind turbines to conduct theoretical derivation and conduct actual tests under 50Hz grid conditions? The method of using the obtained test data to equivalently obtain the grid-connected performance of 60Hz wind turbines is one of the important research topics in this field.

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  • Method for detecting grid-connected performance of 60hz wind turbines in 50hz power grid
  • Method for detecting grid-connected performance of 60hz wind turbines in 50hz power grid
  • Method for detecting grid-connected performance of 60hz wind turbines in 50hz power grid

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Embodiment Construction

[0012] The method for detecting the grid-connected performance of a 60Hz wind turbine in a 50Hz power grid according to the present invention mainly includes the following steps:

[0013] Step A, according to the synchronous speed n of the 60Hz wind turbine at 60Hz 1 , rated speed n N , calculated at rated speed n N when the slip s.

[0014] Step B, according to the synchronous speed n of the 60Hz wind turbine at 50Hz 2 ’, slip s, calculate the rated speed n of the 60Hz wind turbine at 50Hz N '.

[0015] Step C, connect the 60Hz wind turbine to the 50Hz grid, and reduce the current to balance the increase in iron loss caused by the operation of the 60Hz wind turbine at 50Hz.

[0016] Step D, gradually increase the speed and torque, measure the power P' achieved by the wind turbine under the tolerable torque, and calculate the power P that the 60Hz wind turbine can achieve on the 60Hz power grid, and the calculation basis is P': P= no N ': n N .

[0017] Below with res...

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Abstract

The invention relates to a method for detecting the grid-connected performance of a 60Hz wind turbine in a 50Hz power grid, including: calculating the slip of a 60Hz wind turbine at a rated speed of nN at 60Hz; Rated speed at 50Hz; connect the 60Hz wind turbine to the 50Hz power grid, and reduce the current; gradually increase the speed and torque, measure the power P' achieved by the wind turbine under the torque it can withstand, and calculate the 60Hz wind power The power P that the unit can achieve on the 60Hz grid. The present invention analyzes the parameter characteristics of the 60Hz wind turbine integrated into the 50Hz power grid, conducts actual tests under the condition of the 50Hz grid, and equivalently obtains the grid-connected performance of the 60Hz wind turbine, thereby solving the problem of running a 60Hz wind turbine without a 60Hz power supply The difficulty of testing, compared with other methods, the cost is much lower.

Description

technical field [0001] The invention relates to a method for detecting the grid-connected performance of a wind turbine, in particular to a method for detecting the grid-connected performance of a 60Hz wind turbine under the condition of a 50Hz grid. Background technique [0002] Since the frequency of the power grid in mainland China is all 50Hz, the 60Hz wind turbines cannot be actually tested at full power of the 60Hz grid. If the 60Hz wind turbine is shipped abroad for grid connection test, the cost will be very high. For this reason, many manufacturers are looking for a method that can detect the grid-connected performance of 60Hz wind turbines in China. [0003] Relevant domestic experts have proposed many different methods to detect the grid-connected performance of 60Hz wind turbines, such as connecting the stator of the generator set directly to the water resistor, and controlling the stator to output 60Hz power consumption on the water resistor through the double-...

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Application Information

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IPC IPC(8): H02J3/34G01R31/34
Inventor 徐佳园潘磊林明秦明
Owner GUODIAN UNITED POWER TECH
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