On-site testing method and system for efficiency of transmission chain of offshore wind turbine generator

A technology for offshore wind power and on-site testing, which is applied in the monitoring of wind turbines, machines/engines, and wind turbines. It can solve problems such as poor test accuracy, large uncertainty, and low torque signal test accuracy, and improve operational reliability. , optimize the structural design, and ensure the effect of stable operation

Pending Publication Date: 2022-03-15
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the torque measured by this method is coupled with the bending moment signal of the main shaft of the wind turbine, resulting in a low test accuracy of the torque signal, which cannot truly reflect the efficiency level of the transmission chain.
It can be seen that the existing wind turbine transmission chain efficiency testing methods have defects such as poor test accuracy and large uncertainty, and cannot realize on-site real-time testing of wind turbine transmission chain efficiency. A set of wind turbines suitable for field operating environmental conditions is urgently needed Transmission chain efficiency field test method and system

Method used

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  • On-site testing method and system for efficiency of transmission chain of offshore wind turbine generator
  • On-site testing method and system for efficiency of transmission chain of offshore wind turbine generator
  • On-site testing method and system for efficiency of transmission chain of offshore wind turbine generator

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047]The present invention proposes an on-site test system for the efficiency of the transmission chain of the offshore wind turbine, which adopts the method of real-time measurement of the high and low speed shaft speed and torque to realize the on-site test of the efficiency of the transmission chain of the offshore wind turbine under high-speed operation conditions. The wind speed, active power, impeller speed, pitch angle and other signals output by the main control system are used to analyze the output characteristics of the wind turbine transmission chain efficiency.

[0048] The structural principle of the on-site test system for the efficiency of the offshore wind turbine transmission chain is as follows: figure 2 shown. The transmission chain efficiency characteristic measurement system is composed of a main shaft torque test system, a main shaft speed test system, a high-speed shaft torque test system, a high-speed shaft speed test system and a data acquisition sys...

Embodiment 2

[0068] Based on the same inventive concept, the present invention proposes a method for on-site testing of the efficiency of an offshore wind turbine transmission chain, the method comprising the following steps:

[0069] Step S1: Paste the spindle torque strain gauge on the surface of the spindle; measure the spindle torque and output the signal; specifically: when the strain gauge is deformed, measure the voltage signal output by the Wheatstone bridge and calculate the strain signal; After isolation, conditioning, amplification and encoding, it is transmitted through the signal transmission system; the fixed part receives the signal and performs signal demodulation and decoding, and finally decodes the spindle torque and strain signal into an analog voltage signal of 0-10V.

[0070] Preferable: measure by sticking 45-degree strain gauges.

[0071] The measurement of the spindle torque adopts the method of inductive power supply, and the inductive power supply is formed by wi...

Embodiment 3

[0083] Based on the same inventive concept, the present invention proposes an offshore wind turbine transmission chain efficiency field test server, which is used to receive the acquisition signal sent by the offshore wind turbine transmission chain efficiency field test system for test calculation;

[0084] Preferably: the server is a distributed server.

[0085] Preferably: the server is a cloud server.

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Abstract

The invention relates to an offshore wind turbine generator transmission chain efficiency field test method and system. The system comprises a main shaft torque test system, a main shaft rotating speed test system, a high-speed shaft torque test system, a high-speed shaft rotating speed test system and a data acquisition system. According to the invention, a high-low speed shaft rotation speed and torque real-time measurement mode is adopted, field testing of the transmission chain efficiency of the offshore wind turbine generator under a high-speed operation condition is realized, and the method has important significance for iteratively optimizing the structural design of the transmission chain of the wind turbine generator, improving the operation reliability of the wind turbine generator and guaranteeing the stable operation of the wind turbine generator.

Description

technical field [0001] The invention relates to the field of power quality, in particular to a method and system for on-site testing of the efficiency of an offshore wind turbine transmission chain. Background technique [0002] my country is the country with the largest wind power scale and the fastest development in the world. As of the end of 2020, the cumulative installed capacity of wind power nationwide reached 281.53 million kilowatts, an increase of 34.6% compared to the end of 2019. With the design size and rated capacity of wind turbines increasing, the design size and power output level of wind turbine drive chains are also increasing. The efficiency η of the transmission chain of the wind turbine is a key indicator affecting the output level of the wind turbine, which is jointly determined by the efficiency of each subsystem of the transmission chain. This indicator has always been a concern of wind turbine manufacturers and wind farm operators. The environment...

Claims

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Application Information

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IPC IPC(8): F03D17/00
CPCF03D17/00
Inventor 付德义薛扬赵娜王安庆贾海坤王瑞明龚利策孔令行
Owner CHINA ELECTRIC POWER RES INST
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