CN113738598A - Abnormity detection system of wind driven generator - Google Patents
Abnormity detection system of wind driven generator Download PDFInfo
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- CN113738598A CN113738598A CN202111048856.2A CN202111048856A CN113738598A CN 113738598 A CN113738598 A CN 113738598A CN 202111048856 A CN202111048856 A CN 202111048856A CN 113738598 A CN113738598 A CN 113738598A
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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
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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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/30—Wind power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention discloses an abnormity detection system of a wind driven generator, which comprises: on-line measuring device, off-line measuring device and server, on-line measuring device, off-line measuring device respectively with the server is connected, the server includes: the device comprises a processor circuit, a first bus interface circuit, a second bus interface circuit, a USB circuit and a power switch control circuit, wherein the first bus interface circuit, the second bus interface circuit, the USB circuit and the power switch control circuit are respectively connected with the processor circuit, the first bus interface circuit is connected with the online detection device, and the second bus interface circuit is connected with the offline detection device. By adopting the technical scheme of the invention, the wind generating set can be comprehensively detected so as to make response measures in advance.
Description
Technical Field
The invention relates to equipment detection, in particular to an abnormity detection system of a wind driven generator.
Background
Due to the large number of installation of wind generating sets above megawatt level, research on a large-scale wind generating set state monitoring system is developed at home and abroad at present. Most of the researched monitoring products are mainly used for the system products of wind generating set online monitoring and fault diagnosis. The main technical categories at present are a monitoring system based on a resonance demodulation technology, a monitoring system based on an optimal filtering demodulation technology and a remote monitoring diagnosis system based on wireless communication. And the wind power plant enters an operation stage, and the wind power plant implements operation management and maintenance on the wind generating set. The wind generating set is a complex device consisting of an electrical system and a mechanical system, is located in a field with a severe environment, can have some faults or hidden dangers after long-term operation, and generally has some daily maintenance and repair capabilities for a wind power plant maintenance personnel, and cannot completely meet the maintenance requirements of the wind generating set. In addition, some unpredictable hidden dangers can cause the unit to stop frequently and for a long time, and in order to ensure the maximum income of the wind power plant, the operating staff of the wind power plant bears great pressure.
Disclosure of Invention
The invention aims to solve the technical problem of providing an abnormity detection system of a wind driven generator, which can comprehensively detect the wind driven generator set so as to make a countermeasure in advance.
In order to achieve the above object, the present invention adopts the following technical solutions
An abnormality detection system for a wind power generator, comprising: on-line measuring device, off-line measuring device and server, on-line measuring device, off-line measuring device respectively with the server is connected, the server includes: the device comprises a processor circuit, a first bus interface circuit, a second bus interface circuit, a USB circuit and a power switch control circuit, wherein the first bus interface circuit, the second bus interface circuit, the USB circuit and the power switch control circuit are respectively connected with the processor circuit, the first bus interface circuit is connected with the online detection device, and the second bus interface circuit is connected with the offline detection device; wherein the content of the first and second substances,
the online detection device is used for detecting the wind generating set in real time and sending an online detection result to the server;
the server is used for recording the running time and the running state of the wind generating set;
and the off-line detection device is used for detecting the wind generating set according to the running time and the running state of the wind generating set and sending an off-line detection result to the server.
Preferably, the online detection device includes: a blade detection device, comprising: acoustic emission detection equipment and data analysis equipment; the acoustic emission detection apparatus includes: the device comprises an acoustic emission source, an acoustic emission sensor, a signal conditioning circuit, a digital coding circuit and a WiFi transmitter; the data analysis equipment comprises a WiFi receiver, an acoustic emission signal acquisition card signal acquisition processing system and a display system; the acoustic emission source is used for emitting elastic waves to the blade of the wind driven generator to be detected; the acoustic emission sensor is used for detecting mechanical vibration of the wind driven generator blade to be detected caused by the elastic waves, generating an electric signal representing the mechanical vibration and transmitting the electric signal to the signal conditioning circuit; the signal conditioning circuit is used for carrying out digital signal processing on the electric signal.
Preferably, the online detection device includes: a state detection device, comprising:
the detection module is used for detecting the vibration of the wind generating set to obtain a detection signal;
the control module is used for determining the life cycle stage of the wind generating set, selecting a pre-stored standard, comparing the standard with the detection signal and judging the state of the wind generating set;
and the output module is used for outputting the state signal of the wind generating set according to the judgment result of the control device.
Preferably, the state detection device further includes: the device comprises a rotating speed detection module and an adjusting module;
the rotating speed detection module is used for detecting the actual rotating speed of a transmission chain of the wind generating set; the control module obtains the actual rotating speed of the input shaft of the generator of the wind generating set according to the rotating speed signal obtained by the rotating speed detection module and a preset strategy; comparing the actual rotating speed with a reference rotating speed in the pre-stored standard, and judging the rotating speed state of the input shaft of the generator;
and the adjusting module is used for adjusting the rotating speed of the input shaft of the generator according to the judgment result of the control module so that the input shaft of the generator stably runs at the reference rotating speed within a preset time length.
Preferably, the online detection device includes: an over-temperature detection device, comprising:
the rectifying circuit is used for rectifying a three-phase alternating current signal of the wind driven generator into a direct current signal to supply to a load;
the voltage sampling circuit is used for sampling the voltage at the output end of the rectifying circuit;
the current sampling circuit is used for sampling the current at the output end of the rectifying circuit;
the rotating speed detection circuit is used for detecting the rotating speed of the wind driven generator;
and generating an instruction for starting the wind driven generator protection device according to the sampling voltage, the sampling current and the rotating speed of the wind driven generator, and sending the instruction to a central processing unit of the wind driven generator protection device.
Preferably, the offline detection apparatus includes: the endoscope detection module is used for entering the interior of the wind generating set through a detection channel and detecting the internal defects of the wind generating set;
preferably, the offline detection apparatus includes: and the lightning stroke detection module is used for detecting whether the wind generating set is struck by lightning or not.
Preferably, the offline detection apparatus includes: and the structural part flaw detection module is used for detecting the damage of the structural part of the wind generating set.
According to the technical scheme, the anomaly detection system of the wind driven generator uses the online detection device to perform online real-time detection, uses the offline detection device to perform offline detection when the wind driven generator runs to a certain time and state according to the record of the server, and sends the online detection result and the offline detection result to the server, so that the wind driven generator can be comprehensively detected, and the countermeasure can be made in advance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural view of an anomaly detection system of a wind turbine according to the present invention;
fig. 2 is a schematic diagram of a server structure of the abnormality detection system of the wind turbine according to the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1 and 2, the present invention provides an abnormality detection system for a wind turbine generator, including: on-line measuring device, off-line measuring device and server, on-line measuring device, off-line measuring device respectively with the server is connected, the server includes: the device comprises a processor circuit, a first bus interface circuit, a second bus interface circuit, a USB circuit, a power switch control circuit and a power circuit, wherein the first bus interface circuit, the second bus interface circuit, the USB circuit and the power switch control circuit are respectively connected with the processor circuit, the power switch control circuit is connected with the power circuit, the first bus interface circuit is connected with the online detection device, and the second bus interface circuit is connected with the offline detection device; wherein the content of the first and second substances,
the online detection device is used for detecting the wind generating set in real time and sending an online detection result to the server;
the server is used for recording the running time and the running state of the wind generating set;
and the off-line detection device is used for detecting the wind generating set according to the running time and the running state of the wind generating set and sending an off-line detection result to the server.
The online detection device detects in real time along with the operation of the wind generating set and sends a detection result to the server so as to record; the off-line detection device is used for detecting when the wind generating set runs for a certain time and when the wind generating set stops running, and sending a detection result to the server for recording. And the server records the running time and running state of the wind generating set and records the online detection result and the offline detection result. The on-line detection means and the off-line detection means will be described in detail below.
The invention can realize the on-line detection function of the wind turbine equipment, realize the data remote transmission of the detection result, find the hidden trouble fault of the equipment in time and reduce the working intensity of field personnel; the off-line detection part adopts an advanced technology to carry out deep detection and analysis on important parts of the equipment; the server can establish a reasonable maintenance plan through the detection result to prevent the over-maintenance and under-maintenance conditions.
Further, the online detection device includes: a blade detection device, comprising: acoustic emission detection equipment and data analysis equipment; the acoustic emission detection apparatus includes: the device comprises an acoustic emission source, an acoustic emission sensor, a signal conditioning circuit, a digital coding circuit and a WiFi transmitter; the data analysis equipment comprises a WiFi receiver, an acoustic emission signal acquisition card signal acquisition processing system and a display system; wherein the content of the first and second substances,
the acoustic emission source is used for emitting elastic waves to the blade of the wind driven generator to be detected;
the acoustic emission sensor is used for detecting mechanical vibration of the wind driven generator blade to be detected caused by the elastic waves, generating an electric signal representing the mechanical vibration and transmitting the electric signal to the signal conditioning circuit;
the signal conditioning circuit is used for carrying out digital signal processing on the electric signal and transmitting the electric signal after the digital signal processing to the digital coding circuit;
the digital coding circuit is used for coding the electrical signal after being processed by the digital signal to obtain coded data and transmitting the coded data to the WiFi transmitter;
the WiFi transmitter is used for transmitting the coded data to the WiFi receiver of the data analysis device through WiFi connection;
the WiFi receiver is used for receiving the coded data and transmitting the coded data to the signal acquisition processing system of the acoustic emission signal acquisition card;
the acoustic emission signal acquisition card signal acquisition processing system is used for extracting information which represents the mechanical vibration of the blade of the wind driven generator to be detected, caused by the elastic waves, from the encoded data;
the display system is used for displaying the information.
The blade detection device can effectively detect operating conditions of the blade of the wind driven generator, such as cracks, natural cracks, surface abrasion, sand holes and the like caused by aging; the operation condition of the blade can be monitored in real time, and on-site technical guidance is provided for operation and maintenance of the blade.
Further, the online detection device includes: a state detection device, comprising:
the detection module is used for detecting the vibration of the wind generating set to obtain a detection signal;
the control module is used for determining the life cycle stage of the wind generating set, selecting a pre-stored standard, comparing the standard with the detection signal and judging the state of the wind generating set;
and the output module is used for outputting the state signal of the wind generating set according to the judgment result of the control device.
By adopting the state detection device, the standard is continuously changed along with the abrasion conditions of different stages of the wind generating set, so that the normal working state of the wind generating set at the stage can be accurately reflected, and the control device can select different standards according to different stages of the life cycle of the wind generating set, thereby further improving the accuracy of state monitoring and improving the control quality.
Further, the state detection apparatus further includes: the device comprises a rotating speed detection module and an adjusting module;
the rotating speed detection module is used for detecting the actual rotating speed of a transmission chain of the wind generating set; the control module obtains the actual rotating speed of the input shaft of the generator of the wind generating set according to the rotating speed signal obtained by the rotating speed detection module and a preset strategy; comparing the actual rotating speed with a reference rotating speed in the pre-stored standard, and judging the rotating speed state of the input shaft of the generator;
and the adjusting module is used for adjusting the rotating speed of the input shaft of the generator according to the judgment result of the control module so that the input shaft of the generator stably runs at the reference rotating speed within a preset time length.
By adopting the rotating speed detection module and the adjusting module, under the influence of standards, the control device can make comparison and judgment only by obtaining a detection signal of the input shaft of the generator which runs constantly for a preset time length under a preset rotating speed value, the rotating speed detection device detects the rotating speed of the input shaft of the generator and the adjusting device adjusts the rotating speed of the input shaft of the generator, so that the input shaft of the generator stably runs at the preset rotating speed within the preset time length, the detection device provides guarantee for the smooth monitoring of the wind generating set at each stage, and the detection accuracy and the reliability of a monitoring result are improved.
Further, the online detection device includes: an over-temperature detection device, comprising:
the rectifying circuit is used for rectifying a three-phase alternating current signal of the wind driven generator into a direct current signal to supply to a load;
the voltage sampling circuit is used for sampling the voltage at the output end of the rectifying circuit;
the current sampling circuit is used for sampling the current at the output end of the rectifying circuit;
the amplifying circuit is used for amplifying the sampling current signal;
the rotating speed detection circuit is used for detecting the rotating speed of the wind driven generator;
generating an instruction for starting the wind driven generator protection device according to the sampling voltage, the sampling current and the rotating speed of the wind driven generator, and sending the instruction to a central processing unit of the wind driven generator protection device;
the central processing unit is respectively connected with the voltage sampling circuit, the amplifying circuit and the rotating speed detection circuit, the voltage sampling circuit and the current sampling circuit are respectively connected with the rectifying circuit, the amplifying circuit is connected with the current sampling circuit, the rectifying circuit is connected with the three-phase alternating current output end of the wind driven generator, and the central processing unit is further connected with the wind driven generator protection device. The central processing unit adopts a DSPIC33FJ16GS402 chip.
The working principle of the module is as follows: when the wind driven generator works, the three-phase alternating current signal of the wind driven generator is rectified into a direct current signal by the rectifying circuit, and the voltage of the output end of the rectifying circuit is sampled by the voltage sampling circuit and is input to the central processing unit. The sampling frequency of the voltage sampling circuit and the sampling frequency of the current sampling circuit are both 1 Hz. The rotating speed detection circuit converts the signals of the T phase of the wind driven generator into square wave signals and transmits the square wave signals to the central processing unit. The central processing unit calculates the actual power of the wind driven generator from N groups of recently sampled voltages and currents, namely, the N groups of currents and voltages respectively calculate instantaneous power, the instantaneous power is averaged to obtain actual power, the current rotating speed of the wind driven generator is calculated according to a square wave signal input by a rotating speed detection circuit, the rated power of the wind driven generator is determined according to the current rotating speed of the wind driven generator, the actual power is subtracted from the rated power to finally obtain the heating power of the wind driven generator, the ratio of the heating power of the wind driven generator to the rated power of the wind driven generator is calculated, whether the ratio of the heating power of the wind driven generator to the rated power of the wind driven generator is greater than 20% or not is judged, if yes, an instruction for starting the wind driven generator protection device is generated and sent to the wind driven generator protection device, and starting the wind driven generator protection device to perform over-temperature protection, otherwise discarding the group of voltage and current sampled firstly in the N groups of sampled voltage and current, and continuously detecting whether the wind driven generator is over-temperature.
The method comprises the steps of detecting the rotating speed of the wind driven generator by sampling the output voltage and the output current of the wind driven generator, calculating the actual power of the wind driven generator according to the output voltage and the output current of the wind driven generator, determining the rated power of the wind driven generator according to the rotating speed of the wind driven generator, determining whether the wind driven generator is over-temperature or not according to the rated power and the actual power, and omitting the installation of a temperature sensor in the wind driven generator and a connecting line of a system if the wind driven generator protection device is started, so that the method is simple to realize and low in cost.
Further, the offline detection apparatus includes: and the endoscope detection module is used for entering the interior of the wind generating set through the detection channel and detecting the internal defects of the wind generating set. The endoscope detection belongs to visual inspection in nondestructive detection and is an extension of human vision. Under the condition of not damaging the detected object, the liquid enters the detected object through the detection channel to detect specific defects and assist inspectors in performing qualitative analysis.
Further, the offline detection apparatus includes: and the lightning stroke detection module is used for detecting whether the wind generating set is struck by lightning or not. The wind generating sets are located outdoors, in order to obtain better wind energy resources, no large buildings are arranged around the wind generating sets, the wind generating sets are easy to be struck by lightning, and in the design process of the wind generating sets, although lightning protection design is very important, the lightning protection is still ineffective due to various reasons, and loss is caused due to lightning strikes. Lightning strike detection may include, for example, grounding device detection, lightning strike protection device detection, and wind turbine generator system internal equipotential connection detection, among others.
Further, the offline detection apparatus includes: and the structural part flaw detection module is used for detecting the damage of the structural part of the wind generating set. The wind generating set is assembled by structural parts, comprises castings and welding parts, and is a main body of the wind generating set, when the structural parts have internal damages such as cracks, threats can be brought to the safety of the wind generating set and workers, such as tower breakage, hub disintegration and the like. The key structural part can be detected by nondestructive inspection technologies such as ultrasonic waves and a magnet yoke method.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. An abnormality detection system for a wind power generator, comprising: on-line measuring device, off-line measuring device and server, on-line measuring device, off-line measuring device respectively with the server is connected, the server includes: the device comprises a processor circuit, a first bus interface circuit, a second bus interface circuit, a USB circuit and a power switch control circuit, wherein the first bus interface circuit, the second bus interface circuit, the USB circuit and the power switch control circuit are respectively connected with the processor circuit, the first bus interface circuit is connected with the online detection device, and the second bus interface circuit is connected with the offline detection device; wherein the content of the first and second substances,
the online detection device is used for detecting the wind generating set in real time and sending an online detection result to the server;
the server is used for recording the running time and the running state of the wind generating set;
and the off-line detection device is used for detecting the wind generating set according to the running time and the running state of the wind generating set and sending an off-line detection result to the server.
2. The abnormality detection system for wind power generator according to claim 1, characterized in that said on-line detection means comprises: blade detection device, it includes: acoustic emission detection equipment and data analysis equipment; the acoustic emission detection apparatus includes: the device comprises an acoustic emission source, an acoustic emission sensor, a signal conditioning circuit, a digital coding circuit and a WiFi transmitter; the data analysis equipment comprises a WiFi receiver, an acoustic emission signal acquisition card signal acquisition processing system and a display system; the acoustic emission source is used for emitting elastic waves to the blade of the wind driven generator to be detected; the acoustic emission sensor is used for detecting mechanical vibration of the wind driven generator blade to be detected caused by the elastic waves, generating an electric signal representing the mechanical vibration and transmitting the electric signal to the signal conditioning circuit; the signal conditioning circuit is used for carrying out digital signal processing on the electric signal.
3. The abnormality detection system for wind power generator according to claim 2, characterized in that said on-line detection means comprises: a state detection device, comprising:
the detection module is used for detecting the vibration of the wind generating set to obtain a detection signal;
the control module is used for determining the life cycle stage of the wind generating set, selecting a pre-stored standard, comparing the standard with the detection signal and judging the state of the wind generating set;
and the output module is used for outputting the state signal of the wind generating set according to the judgment result of the control device.
4. The abnormality detection system for a wind power generator according to claim 3, wherein said state detection device further comprises: the device comprises a rotating speed detection module and an adjusting module;
the rotating speed detection module is used for detecting the actual rotating speed of a transmission chain of the wind generating set; the control module obtains the actual rotating speed of the input shaft of the generator of the wind generating set according to the rotating speed signal obtained by the rotating speed detection module and a preset strategy; comparing the actual rotating speed with a reference rotating speed in the pre-stored standard, and judging the rotating speed state of the input shaft of the generator;
and the adjusting module is used for adjusting the rotating speed of the input shaft of the generator according to the judgment result of the control module so that the input shaft of the generator stably runs at the reference rotating speed within a preset time length.
5. The abnormality detection system for wind power generator according to claim 1, characterized in that said on-line detection means comprises: an over-temperature detection device, comprising:
the rectifying circuit is used for rectifying a three-phase alternating current signal of the wind driven generator into a direct current signal to supply to a load;
the voltage sampling circuit is used for sampling the voltage at the output end of the rectifying circuit;
the current sampling circuit is used for sampling the current at the output end of the rectifying circuit;
the rotating speed detection circuit is used for detecting the rotating speed of the wind driven generator;
and generating an instruction for starting the wind driven generator protection device according to the sampling voltage, the sampling current and the rotating speed of the wind driven generator, and sending the instruction to a central processing unit of the wind driven generator protection device.
6. The abnormality detection system for a wind power generator according to claim 1, wherein said offline detection device includes: and the endoscope detection module is used for entering the interior of the wind generating set through the detection channel and detecting the internal defects of the wind generating set.
7. The abnormality detection system for a wind power generator according to claim 1, wherein said offline detection device includes: and the lightning stroke detection module is used for detecting whether the wind generating set is struck by lightning or not.
8. The abnormality detection system for a wind power generator according to claim 1, wherein said offline detection device includes: and the structural part flaw detection module is used for detecting the damage of the structural part of the wind generating set.
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Application publication date: 20211203 |
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