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Wind turbine generator set drive system fault early-warning method

A technology for wind turbines and transmission systems, which is applied in the testing of machine gears/transmission mechanisms, etc., and can solve problems such as inaccurate fault alarms for wind turbines

Inactive Publication Date: 2013-12-11
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the inaccurate fault alarm of the current wind power generator set, the present invention tests the transmission system of the wind power generator set, and proposes a fault early warning method for the wind power generator set transmission system

Method used

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  • Wind turbine generator set drive system fault early-warning method
  • Wind turbine generator set drive system fault early-warning method
  • Wind turbine generator set drive system fault early-warning method

Examples

Experimental program
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Embodiment Construction

[0034] Embodiments of the present invention will be further described below in conjunction with accompanying drawings:

[0035] Regularly monitor the transmission system of a 1.5 MW wind turbine produced by a domestic wind turbine manufacturer. Acceleration sensors and temperature sensors are installed according to the requirements of the measuring points in step 1 of claim 1. The early warning system collects wind turbine transmission data every 30 minutes. For the parameters of system operation, the sampling frequency of the acceleration signal is 32768Hz, and the sampling time is 1min; the measurement speed of the temperature sensor is 850ms / point, and the sampling time is 1min; The three wind turbines are denoted as "a", "b" and "c" respectively.

[0036] Combined with the manual figure 1 The flow chart, the specific implementation steps are as follows:

[0037] A method for early warning of a fault in a transmission system of a wind power generating set, testing the trans...

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Abstract

The invention relates to the technical field of wind power generation, in particular to a wind turbine generator set drive system fault early-warning method. A temperature signal and an acceleration magnitude of key parts of the wind turbine generator set drive system are utilized to monitor the drive system of the wind turbine generator set. The method includes the steps of firstly acquiring practical temperature values T(t) of all measurement points and the vibration acceleration value a(t) of the drive system, then calculating the kurtosis index value of the vibration acceleration and the average temperature value of the wind turbine generator set, comparing the obtained parameters with the preset threshold values, giving an alarm when the parameter exceeds the threshold value, and determining the health condition of the wind turbine generator set drive system by comparing the temperature and the kurtosis index value with the threshold values. The method can improve the fault early-warning accuracy rate, has promotion effects on shutdown protection and fault early-warning of the wind turbine generator set and can reduce shutdown time caused by fault judgment.

Description

technical field [0001] The invention particularly relates to a method for early warning of a fault in a transmission system of a wind power generating set, and relates to the technical field of wind power generation. Background technique [0002] Energy is an important material basis for the survival, development and progress of human society. Due to the overall strain on fossil fuels and increasing environmental pollution, the challenge for all countries is how to take action to transition to a safer, low-carbon energy system without undermining economic and social development. Therefore, the development and utilization of renewable energy has become one of the energy development strategies of all countries in the world. Wind energy is the fastest-growing clean energy among renewable energy sources, and wind power generation is also the most promising power generation method for large-scale development and commercialization. Therefore, the development and utilization of wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/02
Inventor 向玲崔伟胡爱军鄢小安陈涛李淑东
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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