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Fan lightning-prevention performance detecting system and method

A detection system and fan technology, which is applied to wind turbines, wind energy power generation, wind turbines and other directions that are consistent with the wind direction, can solve the problems of a large proportion of damage, reduced blade lightning protection performance, and large differences in lightning protection performance.

Inactive Publication Date: 2019-06-11
BEIJING PUHUA YINENG WIND POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the small area of ​​the lightning receptors of the fan blades, and the blades are rotating parts, the lightning may not be received by the lightning receptors, so that the damage to the blades due to lightning strikes accounts for a large proportion, which greatly reduces the lightning protection performance of the blades.
In addition, the existing lightning protection performance testing experiments are basically carried out in the laboratory. Due to the large difference between indoor and outdoor environments, there may be a large difference between the test results and the actual lightning protection performance of the blade.

Method used

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  • Fan lightning-prevention performance detecting system and method

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Embodiment 1

[0038] The embodiment of the present invention provides a wind turbine lightning protection performance detection system, please refer to figure 1 , which is a structural schematic diagram of the unmanned lightning strike test system provided by the embodiment of the present invention, as figure 1 As shown, the wind turbine lightning protection performance detection system of the present invention includes: a blade to be detected 100, a data acquisition device 200 and a computer 300 arranged outside the blade to be detected 100, and a lightning receiving device arranged on the blade to be detected 110.

[0039] Wherein, the lightning receptor device 110 disposed on the blade to be detected 100 includes a lightning receptor disposed on the surface of the blade to be detected 100 and a current down conductor disposed inside the blade to be detected 100, the The lightning receptor is connected to one end of the current down conductor; a lightning protection conductive coating 12...

Embodiment 2

[0046] The embodiment of the present invention provides a method for testing the lightning protection performance of wind turbines, please refer to image 3 , which is a flow chart of a method for detecting lightning protection performance of a wind turbine provided in an embodiment of the present invention. This method is implemented by the system provided in Embodiment 1. This step may specifically include:

[0047] S301, introducing lightning into the lightning receptor on the surface of the blade to be detected, or the lightning protection conductive coating at a preset position on the surface of the blade to be detected, and generating current.

[0048] Specifically, due to the small area of ​​the air receptor, the incoming lightning may not be received by the air receptor, but hit the blades to be detected around the air receptor. Therefore, a lightning protection conductive coating can be pre-set around the lightning receptor on the surface of the blade to be inspected ...

Embodiment 3

[0058] Figure 4 Schematic diagram of the structure of the dual-blade wind power generator provided in this embodiment, Figure 5 The principle diagram of the impeller speed combining mechanism provided for this embodiment. This embodiment is an improvement based on the wind turbines in Embodiments 1 and 2, and the provided double-blade wind power generator solution can greatly improve the utilization rate of wind energy.

[0059] At present, a common method for increasing the power generation of a wind generator is to increase the diameter of the impeller, thereby increasing the area facing the wind of the impeller, and increasing the driving force of the impeller, thereby increasing the power generation. However, after the diameter of the impeller increases, in order to ensure the safety of the fan, the speed of the impeller is generally small. Within 25 rpm, the airflow is easy to pass between adjacent blades, resulting in waste of wind energy.

[0060] In order to effect...

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Abstract

The embodiments of the invention provide a fan lightning-prevention performance detecting system and method. The system comprises a to-be-detected blade, a data acquisition device, a computer and a lightning receiving device, wherein the data acquisition device and the computer are arranged outside the to-be-detected blade, the lightning receiving device is arranged on the to-be-detected blade, and a lightning-prevention conductive coating is arranged at a preset position of the surface of the to-be-detected blade. The lightning-prevention performance of the blade can be detected under an outdoor environment, and the system and method have the advantages of low cost, easy operation and the like; in addition, the lightning-prevention conductive coating is arranged on the surface of the to-be-detected blade so that the lightning receiving area can be enlarged, and the lightning receiving rate and the lightning-prevention performance of the blade are improved.

Description

【Technical field】 [0001] The invention relates to the technical field of wind power generation, in particular to a wind turbine lightning protection performance detection system and method. 【Background technique】 [0002] Existing wind power generators are generally single-blade wind power generators with low power generation efficiency, and the power generation efficiency can only be adjusted indirectly by adjusting the inclination angle of the blade and the size of the impeller. However, the fan structure with double impellers can be selected and adjusted according to the wind speed, which indirectly improves the utilization rate of wind energy, and its practicality is getting higher and higher, and it has a tendency to replace single-impeller wind turbines. [0003] Single-blade or double-blade wind turbines generally need to be installed in open areas in the field, and are very vulnerable to lightning strikes. Therefore, in the existing lightning protection performance t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D17/00F03D80/30F03D1/06
CPCY02E10/72
Inventor 龙泉张超王吉远石一迪张耀文欧阳磊刘澈王朝弥崧赵树良李新宇
Owner BEIJING PUHUA YINENG WIND POWER TECH