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DAS-Based Monitoring Method of Wind Turbine Blade Structural Condition

A technology of wind turbine and structural state, applied in the monitoring of wind turbines, wind turbines, and wind turbines consistent with the wind direction, etc. It can solve the problems of failure to warn of damage, delay maintenance time, and affect power generation efficiency, so as not to fall off Effect

Active Publication Date: 2022-02-08
NANJING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the particularity of blade shape, installation location, and working method, traditional manual inspection and ultrasonic testing methods cannot detect damage to blades in a timely and accurate manner, nor can they provide early warning of damage. Increased power generation efficiency and delayed maintenance time

Method used

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  • DAS-Based Monitoring Method of Wind Turbine Blade Structural Condition
  • DAS-Based Monitoring Method of Wind Turbine Blade Structural Condition
  • DAS-Based Monitoring Method of Wind Turbine Blade Structural Condition

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Embodiment Construction

[0031] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0032] Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiment...

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Abstract

The invention discloses a DAS-based method for monitoring the state of the blade structure of a wind power generator. The outer plate of the blade on one side of the wind power generator is used as the starting end of optical fiber laying, and the sensing optical fiber is laid in an S-shaped detour. Lay out the outer board of the blade, the middle support board, the middle support board to the outer board of the blade, and form a fiber ring at the entrance and exit of the sensing fiber and the connection of the fiber. Cover with epoxy resin glue, paste a layer of fiberglass fiber tape on the area coated with epoxy resin glue, install the DAS demodulation host on the inner cylindrical surface of the blade body close to the airtight door, through the The hole is connected to the sensing optical fiber. When the blade structure is damaged or is about to be damaged, the sensing optical fiber arranged at the blade will transmit the sensing signal carrying the vibration information at the abnormal position to the DAS demodulation host, so that the DAS can solve the problem. The tuner monitors the abnormal position of the blades.

Description

technical field [0001] The invention relates to the technical field of distributed optical fiber sensing, in particular to a DAS-based method for monitoring the state of the blade structure of a wind power generator. Background technique [0002] A wind turbine is a power device that converts wind energy into mechanical energy and mechanical energy into electrical energy, and undertakes the heavy responsibility of wind power generation. Since wind turbines rely on renewable wind energy to generate electricity, they are clean and environmentally friendly. In addition, its infrastructure construction time is short, it can be constructed on land and at sea, and its installed capacity is flexible and its operating cost is low. Therefore, the construction of wind turbines has been strongly supported by the state. [0003] However, wind turbines are often located in climate-changing and complex environments, and the wind turbines vibrate due to unstable wind conditions. During ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D17/00F03D1/06
CPCF03D17/00F03D1/0675Y02E10/72
Inventor 张益昕梁蕾熊菲张旭苹丁哲文邹宁睦王峰
Owner NANJING UNIV
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