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Multi-source information fusion based state monitoring system and method of wind-driven generator

A condition monitoring system, multi-source information fusion technology, applied in engine testing, machine/structural component testing, measuring devices, etc., can solve problems such as maintenance difficulties and inability to maintain, and achieve high reliability and low cost.

Inactive Publication Date: 2010-04-21
SHANGHAI DIANJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since wind turbines are often installed on extremely high towers, some towers are even as high as 20 meters or more, maintenance is very difficult; and offshore wind turbines are usually unable to be repaired in time due to severe weather conditions (storms, high tides)

Method used

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  • Multi-source information fusion based state monitoring system and method of wind-driven generator
  • Multi-source information fusion based state monitoring system and method of wind-driven generator
  • Multi-source information fusion based state monitoring system and method of wind-driven generator

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Embodiment 1

[0036] see figure 1 , the present invention discloses a wind power generator condition monitoring system based on multi-source information fusion, the system can utilize different types of measurement information from multiple sensors for online / offline monitoring of the wind power generator state. The monitoring system includes several sensors 20 , an acquisition unit 50 , an information fusion unit 10 , and a preprocessing unit 30 .

[0037] 【sensor】

[0038] Each sensor 20 is used to sense different types of measurement information of the wind turbine; the types of sensors mainly include temperature sensors, acceleration sensors, vibration sensors and the like. For example, in one embodiment, the sensors include a temperature sensor 21 , an acceleration sensor 22 , and a vibration sensor 23 . Of course, the sensors may also include multiple temperature sensors, multiple acceleration sensors, and multiple vibration sensors.

[0039] Such as figure 2 as shown, figure 2...

Embodiment 2

[0060] see image 3 The difference between this embodiment and Embodiment 1 is that, in this embodiment, both the information fusion unit and the preprocessing unit are installed in the computer. The condition monitoring method of the wind turbine condition monitoring system mainly includes the following steps:

[0061] 1. Collect the measurement data of each sensor through the collection system;

[0062] 2. Filter the measurement data from each sensor in the computer, remove outliers and other preprocessing;

[0063] 3. Use the multi-source sensor data fusion algorithm in the computer for data fusion, and give the final result and its accuracy;

[0064] 4. Carry out corresponding control operations according to the information given by the monitoring system.

[0065] The wind power generator condition monitoring system based on the multi-source information fusion technology proposed by the present invention can effectively monitor the state and fault diagnosis of the wind ...

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Abstract

The invention discloses multi-source information fusion based state monitoring system and method of a wind-driven generator. The monitoring system comprises a plurality of sensors, an acquisition unit and an information fusion unit, wherein the sensors are used for inducing different type measurement information of the wind-driven generator; the acquisition unit acquires the measurement information of each sensor; and the information fusion unit receives the measurement information of each sensor and carries out fusion operation according to the measurement information to obtain a final measurement result. The plurality of sensors are used in the monitoring system to respectively acquire the state information of the wind-driven generator, then to effectively fuse the measurement information to obtain final data; and more accurate measurement signals can be obtained from the information of all the sensors by effectively fusing the information of the sensors when all the sensors can normally work; and failure symptoms are extracted from other sensors to replace the measurement signals of the failure sensors when a part of the sensors are broken down and can not normally work, and the self failures of the sensors also can be defined and diagnosed at the same time according to the extracted failure symptoms.

Description

technical field [0001] The invention belongs to the technical field of generator monitoring, and relates to a wind power generator state monitoring system, in particular to a wind power generator state monitoring system based on multi-source information fusion; in addition, the present invention also relates to the above wind power generator state monitoring system monitoring method. Background technique [0002] As governments of various countries pay more and more attention to green / renewable energy, wind power technology is developing rapidly, with a view to becoming a substitute for traditional energy in the near future. In some countries, such as Germany and Denmark, wind power already plays an important role in the grid, although there are still some problems. Therefore, wind power is currently the fastest growing new energy in the world. By the end of 2003, the installed capacity of wind power had exceeded 40,000 megawatts, which was twice the statistic in 1999. As...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/00
Inventor 谢源高羽焦斌
Owner SHANGHAI DIANJI UNIV
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