CN113295884A - Method for reducing failure rate of wind vane by wind sensor - Google Patents
Method for reducing failure rate of wind vane by wind sensor Download PDFInfo
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- CN113295884A CN113295884A CN202110517254.0A CN202110517254A CN113295884A CN 113295884 A CN113295884 A CN 113295884A CN 202110517254 A CN202110517254 A CN 202110517254A CN 113295884 A CN113295884 A CN 113295884A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/24—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
- G01P13/02—Indicating direction only, e.g. by weather vane
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Aviation & Aerospace Engineering (AREA)
- Multimedia (AREA)
- Acoustics & Sound (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
A method of a wind sensor to reduce a failure rate of a wind vane, comprising: A. setting the constant temperature of a heater of the wind sensor to be 40-60 ℃, and installing the wind sensor with the set constant temperature on a wind measurement bracket; B. coating conductive paste at the connecting interface of the wind sensor and the wind measuring bracket; C. when a cable of the wind sensor enters the cabin cabinet, a protective layer of the cable needs to be stripped to leak out of the shielding layer, and then the cable is installed on a shielding clamp to be subjected to 360-degree grounding treatment; D. the shielding layer of the connecting wire between the temperature measuring junction box of the generator temperature measuring loop and the engine room cabinet is respectively arranged at the temperature measuring junction box and the engine room cabinet, a protective layer of a cable to be stripped is exposed out of the shielding layer, and then the shielding layer is arranged on a shielding clamp to be grounded for 360 degrees, so that the double ends of the shielding layer of the connecting wire are grounded. By the method, the wind vane fault current can be effectively inhibited, the wind vane fault rate is reduced, and the normal operation of the fan is guaranteed.
Description
Technical Field
The invention relates to a wind sensor used in a wind power generation project, in particular to a method for reducing the failure rate of a wind vane by the wind sensor.
Background
In a certain wind power generation sound of Hezhou, Henjiao and Zihai, a plurality of field feedbacks are given, and in the case of a small wind, the FT wind sensor unit is configured to report wind vane faults frequently, so that the unit is shut down, and certain economic loss is caused. When a project worker goes to the cabin to check the fault reason, the following problems are found: firstly, small insects such as flies and the like inhabit in the FT wind sensor resonant chamber; secondly, the joint of the FT wind sensor and the wind measuring bracket is grounded and cannot be effectively connected; and thirdly, the shielding wires of the signal cable of the FT wind sensor cannot be effectively connected. The early-stage technology of the phenomenon is used for preliminarily conjecturing that the three reasons are superposed to cause the identification information current (1.4mA) of the triggering state of the wind sensor, so that the wind vane fault is frequently reported.
Therefore, the invention aims to provide an effective solution to the problem of frequent reporting of the wind vane fault.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for reducing the failure rate of a wind vane by a wind sensor, which can effectively reduce the failure rate of the wind vane.
In order to achieve the purpose, the invention adopts the technical scheme that: a method for reducing a failure rate of a wind vane by a wind sensor comprises the following steps:
A. setting the constant temperature of a heater of the wind sensor to be 40-60 ℃, and installing the wind sensor with the set constant temperature on a wind measurement bracket;
B. coating conductive paste at the connecting interface of the wind sensor and the wind measuring bracket;
C. when a cable of the wind sensor enters the cabin cabinet, a protective layer of the cable needs to be stripped to leak out of the shielding layer, and then the cable is installed on a shielding clamp to be subjected to 360-degree grounding treatment;
D. the shielding layer of the connecting wire between the temperature measuring junction box of the generator temperature measuring loop and the engine room cabinet is respectively arranged at the temperature measuring junction box and the engine room cabinet, a protective layer of a cable to be stripped is exposed out of the shielding layer, and then the shielding layer is arranged on a shielding clamp to be grounded for 360 degrees, so that the double ends of the shielding layer of the connecting wire are grounded.
As a further improvement of the invention, the method A comprises the following steps:
firstly, connecting the wind sensor with a computer through a communication cable, and setting the constant temperature of a heater of the wind sensor on the computer;
secondly, connecting the wind sensor with a cable;
thirdly, sleeving a small cold shrink pipe at the joint between the wind sensor and the cable, and completely sealing the joint through the small cold shrink pipe;
fixing the wind sensor on the wind measuring bracket through a screw;
and fifthly, sleeving a large cold shrinkage pipe at the joint between the wind sensor and the wind measuring support, and completely sealing the joint through the large cold shrinkage pipe.
As a further improvement of the invention, in a, the heater constant temperature of the wind sensor is set to 55 ℃.
As a further improvement of the invention, in step B, it is checked whether the connection interface between the wind sensor and the wind measurement bracket is processed by zinc spraying or cold galvanizing, if so, the conductive paste is directly smeared, and if not, the following steps are carried out:
firstly, polishing off insulating paint at the connection interface of the wind sensor and the wind measuring support by using a polishing machine to expose the metal surface;
secondly, cleaning off the scattered insulating paint powder and metal debris on the metal surface by using a high-efficiency cleaning agent;
thirdly, brushing bright cold spray zinc or cold plating zinc on the metal surface twice, wherein the time interval of brushing for twice is at least 2 hours;
and fourthly, coating conductive paste at the connecting interface of the wind sensor and the wind measuring support.
As a further improvement of the invention, the wind sensor lightning arrester.
As a further improvement of the invention, the installation structure further comprises F, the grounding end installation surfaces of the flasher and the engine room are polished and coated with conductive paste, and the flasher and the engine room are tightly installed to eliminate gaps.
The method is further improved by comprising the following steps of G, detecting whether the grounding of the wind sensor shell is qualified or not, measuring the resistance between the wind sensor shell and the grounding row of the engine room by using a universal meter, and if the measured resistance is not more than 2 omega, determining that the resistance is qualified; if the measured resistance is greater than 2 Ω, it is not qualified, and it is necessary to search whether the ground wire is good.
As a further improvement of the invention, the wind vane test device also comprises a test device H for testing whether the wiring of the wind vane and the wind vane at the position of the cabin cabinet is correctly wired and fastened, and if the wiring is incorrect or not fastened, the wiring and the fastening are carried out again, wherein, the mechanical wind vane cable shielding layer is connected to a-125X 5 grounding end after entering the cabin cabinet; the mechanical anemometer cable shielding layer is connected to a-125X 2 grounding end after entering the cabin cabinet; the ultrasonic wind direction marking cable shielding layer is connected to the-126X 2 grounding end after entering the cabin cabinet; the ultrasonic anemometer cable shield enters the nacelle cabinet and is connected to the-126X 5 ground.
As a further improvement of the invention, the method also comprises I, detecting whether the grounding of the generator switch cabinet is qualified, measuring the resistance between the cabinet body of the generator switch cabinet and the grounding row of the engine room by using a universal meter, and if the measured resistance is 0.1 omega, determining that the grounding is qualified.
The method is further improved by J, whether the lightning protection system of the engine room cabinet is qualified is detected, the resistance between the cabinet body of the engine room cabinet and the engine room grounding bar is measured by adopting a universal meter, the resistance between the grounding bar in the engine room cabinet and the engine room grounding bar is measured, and if the resistance of the grounding bar in the engine room cabinet and the resistance of the grounding bar in the engine room cabinet are out of range of 0.1 omega, the resistance is qualified.
The invention has the beneficial effects that: according to the invention, the temperature of the heater is set to be 40-60 ℃, so that the effect of repelling insects is achieved, and a good operation environment is provided for the wind sensor. Meanwhile, conductive paste is smeared at the connecting interface of the wind sensor and the wind measuring support, so that the wind sensor and the wind measuring support are effectively in contact connection, the conductivity between the wind sensor and the wind measuring support is increased, and the grounding contact effect is increased. Moreover, adopt the shielding checkpost to carry out 360 ground connection with the shielding layer and handle, improve the connection reliability of shielding layer, make the shielding layer can shield external interference current better. By combining the method, the wind vane fault current can be effectively inhibited, the wind vane fault rate is reduced, and the normal operation of the fan is guaranteed.
Detailed Description
The present invention will be further described with reference to the following specific examples.
The method is successfully applied to a Guangdong Shaoyuan milk source large wind distribution electric field, and no fault caused by 1.4ma current occurs after the method is applied from the aspect of operation condition. The method is described in detail below.
A method for reducing a failure rate of a wind vane by a wind sensor comprises the following steps:
A. the constant temperature of a heater of the wind sensor is set to be 40-60 ℃, the temperature is preferably 55 ℃ in the embodiment, and the wind sensor with the set constant temperature is installed on the wind measuring support. The specific setting and installation method of the wind sensor is as follows:
firstly, connecting the wind sensor with a computer through a communication cable, and setting the constant temperature of a heater of the wind sensor on the computer;
secondly, connecting the wind sensor with a cable;
thirdly, sleeving a small cold shrink pipe at the joint between the wind sensor and the cable, and completely sealing the joint through the small cold shrink pipe;
fixing the wind sensor on the wind measuring bracket through a screw;
and fifthly, sleeving a large cold shrinkage pipe at the joint between the wind sensor and the wind measuring support, and completely sealing the joint through the large cold shrinkage pipe.
B. And coating conductive paste at the connecting interface of the wind sensor and the wind measuring bracket. Specifically, whether a connection interface of the wind sensor and the wind measuring support is subjected to zinc spraying or cold galvanizing treatment is checked, if yes, the conductive paste is directly smeared, and if not, the following steps are carried out:
firstly, polishing off insulating paint at the connection interface of the wind sensor and the wind measuring support by using a polishing machine to expose the metal surface;
secondly, cleaning off the scattered insulating paint powder and metal debris on the metal surface by using a high-efficiency cleaning agent;
thirdly, brushing bright cold spray zinc or cold plating zinc on the metal surface twice, wherein the time interval of brushing for twice is at least 2 hours;
and fourthly, coating conductive paste at the connecting interface of the wind sensor and the wind measuring support.
C. When the cable of the wind sensor enters the cabin cabinet, a protective layer of the cable needs to be stripped to leak out of the shielding layer, and then the cable is installed on the shielding clamp to be grounded for 360 degrees.
D. The shielding layer of the connecting wire between the temperature measuring junction box of the generator temperature measuring loop and the engine room cabinet is respectively arranged at the temperature measuring junction box and the engine room cabinet, a protective layer of a cable to be stripped is exposed out of the shielding layer, and then the shielding layer is arranged on a shielding clamp to be grounded for 360 degrees, so that the double ends of the shielding layer of the connecting wire are grounded.
E. The included angle between the lightning receptor and the wind measuring support is 45 degrees, and the straight line vertical distance between the top end of the lightning receptor and the highest point of the wind sensor is larger than 400mm, so that the lightning receptor is straight and cannot be bent.
F. And polishing the grounding end mounting surface of the lightning arrester and the cabin, smearing conductive paste, and tightly mounting to eliminate gaps.
G. Detecting whether the grounding of the wind sensor shell is qualified or not, measuring the resistance between the wind sensor shell and the grounding row of the engine room by using a universal meter, and if the measured resistance is not more than 2 omega, determining that the grounding is qualified; if the measured resistance is greater than 2 Ω, it is not qualified, and it is necessary to search whether the ground wire is good.
H. Detecting whether wiring of the anemoscope and the wind vane at the position of the cabin cabinet is correct and fastened, and if the wiring is incorrect or not fastened, the wiring and the fastening are carried out again, wherein the mechanical wind vane cable shielding layer is connected to a-125X 5 grounding end after entering the cabin cabinet; the mechanical anemometer cable shielding layer is connected to a-125X 2 grounding end after entering the cabin cabinet; the ultrasonic wind direction marking cable shielding layer is connected to the-126X 2 grounding end after entering the cabin cabinet; the ultrasonic anemometer cable shield enters the nacelle cabinet and is connected to the-126X 5 ground.
I. Whether the grounding of the generator switch cabinet is qualified or not is detected, the resistance between the cabinet body of the generator switch cabinet and the grounding row of the engine room is measured by adopting a universal meter, and if the measured resistance is 0.1 omega, the resistance is qualified.
J. And detecting whether the lightning protection system of the engine room cabinet is qualified, measuring the resistance between the cabinet body of the engine room cabinet and the engine room grounding bar by adopting a universal meter, measuring the resistance between the grounding bar in the engine room cabinet and the engine room grounding bar, and if the resistance values of the grounding bar and the engine room grounding bar are out of range of 0.1 omega, determining that the lightning protection system of the engine room cabinet is qualified.
The principle adopted by the method is as follows:
1) principle of temperature rise insect-inhibiting method. Under normal environmental conditions, the temperature is 20-30 ℃, which is a condition suitable for breeding and inhabiting insects such as mosquitoes and the like. Therefore, the temperature of the heater of the wind sensor is set to be 55 ℃, an environment which is not suitable for inhabitation of insects is artificially manufactured, the effect of repelling the insects is achieved, and a good operation environment is provided for the wind sensor.
2) The principle of effective grounding. The connecting points of the wind sensor and the wind measuring support are polished to enable the wind sensor and the wind measuring support to be in better contact, and then the connecting interface of the wind sensor and the wind measuring support is coated with conductive paste to enable the wind sensor and the wind measuring support to be in effective contact connection, so that the conductivity between the wind sensor and the wind measuring support is increased, and the grounding contact effect is increased.
3) The shield layer is well grounded. Adopt the shielding checkpost to carry out 360 ground connection with the shielding layer and handle, improve the connection reliability of shielding layer, make the shielding layer can shield external interference current better.
The method for reducing the wind vane fault rate is standard, feasible and safe, can effectively inhibit the wind vane fault current, reduce the wind vane fault rate and ensure the normal operation of the fan, thereby improving the generating capacity of the fan in a limited service life and generating better economic benefit.
The method has strong popularization, can be applied to land wind power and can also be applied to offshore wind power.
The above-mentioned embodiments are only for convenience of illustration and not intended to limit the invention in any way, and those skilled in the art will be able to make equivalents of the features of the invention without departing from the technical scope of the invention.
Claims (10)
1. A method for reducing the failure rate of a wind vane by a wind sensor is characterized by comprising the following steps:
A. setting the constant temperature of a heater of the wind sensor to be 40-60 ℃, and installing the wind sensor with the set constant temperature on a wind measurement bracket;
B. coating conductive paste at the connecting interface of the wind sensor and the wind measuring bracket;
C. when a cable of the wind sensor enters the cabin cabinet, a protective layer of the cable needs to be stripped to leak out of the shielding layer, and then the cable is installed on a shielding clamp to be subjected to 360-degree grounding treatment;
D. the shielding layer of the connecting wire between the temperature measuring junction box of the generator temperature measuring loop and the engine room cabinet is respectively arranged at the temperature measuring junction box and the engine room cabinet, a protective layer of a cable to be stripped is exposed out of the shielding layer, and then the shielding layer is arranged on a shielding clamp to be grounded for 360 degrees, so that the double ends of the shielding layer of the connecting wire are grounded.
2. The method for reducing the failure rate of the wind vane by the wind sensor according to claim 1, wherein the method comprises the following steps: the method A comprises the following steps:
firstly, connecting the wind sensor with a computer through a communication cable, and setting the constant temperature of a heater of the wind sensor on the computer;
secondly, connecting the wind sensor with a cable;
thirdly, sleeving a small cold shrink pipe at the joint between the wind sensor and the cable, and completely sealing the joint through the small cold shrink pipe;
fixing the wind sensor on the wind measuring bracket through a screw;
and fifthly, sleeving a large cold shrinkage pipe at the joint between the wind sensor and the wind measuring support, and completely sealing the joint through the large cold shrinkage pipe.
3. A method of reducing the failure rate of a wind vane by a wind sensor according to claim 1 or 2, characterized by: in A, the heater constant temperature of the wind sensor is set to 55 ℃.
4. The method for reducing the failure rate of the wind vane by the wind sensor according to claim 1, wherein the method comprises the following steps: and B, checking whether a connection interface of the wind sensor and the wind measuring support is subjected to zinc spraying or cold galvanizing treatment, if so, directly coating conductive paste, and if not, performing the following steps:
firstly, polishing off insulating paint at the connection interface of the wind sensor and the wind measuring support by using a polishing machine to expose the metal surface;
secondly, cleaning off the scattered insulating paint powder and metal debris on the metal surface by using a high-efficiency cleaning agent;
thirdly, brushing bright cold spray zinc or cold plating zinc on the metal surface twice, wherein the time interval of brushing for twice is at least 2 hours;
and fourthly, coating conductive paste at the connecting interface of the wind sensor and the wind measuring support.
5. The method for reducing the failure rate of the wind vane by the wind sensor according to claim 1, wherein the method comprises the following steps: and the wind sensor lightning arrester lightning.
6. The method for reducing the failure rate of the wind vane by the wind sensor according to claim 1, wherein the method comprises the following steps: and F, polishing the grounding end mounting surface of the flasher and the cabin, smearing conductive paste, and tightly mounting to eliminate gaps.
7. The method for reducing the failure rate of the wind vane by the wind sensor according to claim 1, wherein the method comprises the following steps: the grounding detection method comprises the following steps that G, whether the grounding of the wind sensor shell is qualified or not is detected, a universal meter is adopted to measure the resistance between the wind sensor shell and the grounding row of the engine room, and if the measured resistance is not more than 2 omega, the resistance is qualified; if the measured resistance is greater than 2 Ω, it is not qualified, and it is necessary to search whether the ground wire is good.
8. The method for reducing the failure rate of the wind vane by the wind sensor according to claim 1, wherein the method comprises the following steps: the wind vane cable shielding layer is connected to a-125X 5 grounding end after entering the cabin cabinet; the mechanical anemometer cable shielding layer is connected to a-125X 2 grounding end after entering the cabin cabinet; the ultrasonic wind direction marking cable shielding layer is connected to the-126X 2 grounding end after entering the cabin cabinet; the ultrasonic anemometer cable shield enters the nacelle cabinet and is connected to the-126X 5 ground.
9. The method for reducing the failure rate of the wind vane by the wind sensor according to claim 1, wherein the method comprises the following steps: the grounding detection device is characterized by further comprising an I, wherein whether the grounding of the generator switch cabinet is qualified or not is detected, the universal meter is adopted to measure the resistance between the cabinet body of the generator switch cabinet and the grounding row of the engine room, and if the measured resistance is 0.1 omega, the grounding detection device is qualified.
10. The method for reducing the failure rate of the wind vane by the wind sensor according to claim 1, wherein the method comprises the following steps: the method comprises the following steps of detecting whether a lightning protection system of the engine room cabinet is qualified, measuring the resistance between a cabinet body of the engine room cabinet and an engine room grounding bar by using a universal meter, measuring the resistance between the grounding bar in the engine room cabinet and the engine room grounding bar, and if the resistance values of the grounding bar and the engine room grounding bar are out of range of 0.1 omega, determining that the engine room cabinet is qualified.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110517254.0A CN113295884A (en) | 2021-05-12 | 2021-05-12 | Method for reducing failure rate of wind vane by wind sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110517254.0A CN113295884A (en) | 2021-05-12 | 2021-05-12 | Method for reducing failure rate of wind vane by wind sensor |
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Citations (5)
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|---|---|---|---|---|
| JPH09288121A (en) * | 1996-04-23 | 1997-11-04 | Nissin Electric Co Ltd | Wind vane and anemometer |
| CN201576003U (en) * | 2009-12-24 | 2010-09-08 | 北京汉能华科技有限公司 | Wind measuring device |
| CN101882728A (en) * | 2009-05-05 | 2010-11-10 | 泰科电子(上海)有限公司 | Shield clip |
| CN204610151U (en) * | 2015-05-14 | 2015-09-02 | 中国大唐集团新能源股份有限公司 | A kind of wind speed, wind direction detect anti-disabling device |
| CN108092227A (en) * | 2018-01-09 | 2018-05-29 | 北京光华世通科技有限公司 | A kind of EMC metal sheathed cables connector |
-
2021
- 2021-05-12 CN CN202110517254.0A patent/CN113295884A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09288121A (en) * | 1996-04-23 | 1997-11-04 | Nissin Electric Co Ltd | Wind vane and anemometer |
| CN101882728A (en) * | 2009-05-05 | 2010-11-10 | 泰科电子(上海)有限公司 | Shield clip |
| CN201576003U (en) * | 2009-12-24 | 2010-09-08 | 北京汉能华科技有限公司 | Wind measuring device |
| CN204610151U (en) * | 2015-05-14 | 2015-09-02 | 中国大唐集团新能源股份有限公司 | A kind of wind speed, wind direction detect anti-disabling device |
| CN108092227A (en) * | 2018-01-09 | 2018-05-29 | 北京光华世通科技有限公司 | A kind of EMC metal sheathed cables connector |
Non-Patent Citations (2)
| Title |
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| 史彩华 等: "高温对昆虫生殖生理的影响及其在农业害虫防治中的展望", 《中国植保导刊》 * |
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Application publication date: 20210824 |