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Pitch fault detection system and method

A technology of fault detection and pitch, which is applied in the direction of measuring devices, wind engines, instruments, etc., can solve problems such as blade breakage, and achieve the effects of reducing time, improving accuracy, and improving accuracy and speed

Inactive Publication Date: 2016-01-06
GENERAL ELECTRIC CO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the uncontrolled failure lasts too long, it may cause other hazards such as blade breakage

Method used

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  • Pitch fault detection system and method
  • Pitch fault detection system and method
  • Pitch fault detection system and method

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Embodiment Construction

[0036] The specific embodiments of the present invention will be described below. It should be noted that, in the specific description of these embodiments, for the sake of brevity and conciseness, this specification may not describe all the features of the actual embodiments in detail. It should be understood that, in the actual implementation process of any embodiment, just as in the process of any engineering project or design project, in order to achieve the developer's specific goals, in order to meet the system-related or business-related constraints, Often a variety of specific decisions are made, which also vary from one implementation to another. Furthermore, it will also be appreciated that while such development efforts may be complex and tedious, for those of ordinary skill in the art to which this disclosure pertains, the techniques disclosed in this disclosure will Some changes in design, manufacture or production based on the content are only conventional techni...

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Abstract

The invention discloses a pitch fault detection system and a method and relates to a pitch fault detection system. The system comprises at least one blade, a pitch instruction generator, a blade pitch system, a model storage unit and a monitoring unit. The pitch instruction generator is used for generating at least one pitch instruction. The blade pitch system is used for regulating the pitch angle of the blade according to the pitch instruction and outputting an actual response that represents the actual pitch state of the blade. The model storage unit is used for receiving the pitch instruction and outputting an expected response that represents the expected pitch state of the blade based on a nonlinear model of the blade. The monitoring unit is used for comparing the deviation between the actual response and the expected response with a preset threshold value and judging the operation state of the blade based on the comparison result. The invention also discloses a wind turbine and a method for monitoring the blade operation state of the wind turbine.

Description

technical field [0001] The present invention relates to wind turbines, and more particularly, to a system and method for detecting blade pitch faults thereon. Background technique [0002] The wind turbine includes a pitch control system to adjust the pitch angle of the blades so that when the wind speed changes, the rotational speed of the rotor of the wind turbine can be kept within a defined range. When in strong wind conditions or other situations requiring emergency braking, the pitch angle of the blades is turned towards the 90° position. [0003] However, when a communication error or data loss occurs between the wind turbine system controller and the pitch control system, the blade may fail out of control. In this case, the pitch control system will not be able to control the blade, which may turn rapidly towards the 90° position or the 0° position. When all the blades turn towards the 0° position due to a runaway failure, the blades will experience high thrust. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/16G01B21/22F03D7/04
CPCF03D17/00F03D7/0224Y02E10/72
Inventor 苏明杰弗里·A·米柳斯普拉纳·阿加瓦尔马克·E·卡迪纳尔
Owner GENERAL ELECTRIC CO
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