CN114062926A - Generator fault detection method and device and electronic equipment - Google Patents
Generator fault detection method and device and electronic equipment Download PDFInfo
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- CN114062926A CN114062926A CN202111420008.XA CN202111420008A CN114062926A CN 114062926 A CN114062926 A CN 114062926A CN 202111420008 A CN202111420008 A CN 202111420008A CN 114062926 A CN114062926 A CN 114062926A
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- 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
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
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- 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
- G01R31/34—Testing dynamo-electric machines
- G01R31/346—Testing of armature or field windings
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Abstract
The present disclosure provides a generator fault detection method, including: controlling a rotor detector of the generator to emit detection light; acquiring the width of the detection light received by a rotor receiver of the generator to generate width data; controlling an alarm device to send out an alarm signal according to the width data; the rotor detector is fixed at the first end of the generator rotor, and the rotor detector rotates synchronously with the generator rotor. The fault detection method is intuitive, accurate in test and accurate in fault judgment, and overcomes the defects of inaccurate detection, easy detection omission and the like in the related technology. The disclosure also provides a generator fault detection device and electronic equipment.
Description
Technical Field
The disclosure relates to the technical field of generators, and more particularly to a generator fault detection method, a detection device and an electronic device.
Background
The loose slipping-out of the lamination sheets of the stator core of the generator is a main fault of the operation of the generator, and after the lamination sheets slip out, if the lamination sheets are not found in time, the lamination sheets cut a rotor coil, the rotor is short-circuited, and serious faults are caused.
At present, the running condition of the stator is judged by judging the temperature rise of the stator, but the temperature rise of the stator is not necessarily the loosening of the iron core, and other faults are possible, so the method is easy to cause misjudgment. The method can also be used for judging whether the iron core is loosened or not by measuring the loss of the stator iron core, but the unit is required to be shut down when the loss of the stator iron core is measured, and the defect that the running working condition of the stator of the generator cannot be monitored by a method for measuring the loss of the stator iron core exists in the running process of the unit. In the related technology, a certain number of sensors can be embedded in the stator of the generator, the clearance between the stator and the rotor is inevitably reduced after the iron core is loosened, and the fault is judged and the alarm is given out by checking the distance between the inner diameter of the stator and the outer diameter of the rotor.
In the method, the method for measuring the temperature rise of the stator of the generator or the loss of the iron core is not necessarily the method for measuring the temperature rise of the stator of the generator or the method for measuring the loss of the iron core, and the method can also be caused by other faults, so that the fault removal time is increased, and the overhaul cost is increased. Although the method for detecting the clearance of the stator and the rotor through the sensors can detect the looseness of the iron core, the number of the sensors which can be arranged is limited because the stator is a circle, and the iron core is loosened locally between the measuring points of the two sensors, at the moment, the looseness of the iron core at the position cannot be monitored because the measuring points are not arranged, and the generator is easy to fail due to missed detection.
Disclosure of Invention
In view of the above, the present disclosure provides a generator fault detection method, a detection apparatus, and an electronic device.
According to a first aspect of the present disclosure, there is provided a generator fault detection method comprising:
controlling a rotor detector of the generator to emit detection light;
acquiring the width of the detection light received by a rotor receiver of the generator to generate width data;
controlling an alarm device to send out an alarm signal according to the width data;
the rotor detector is fixed at the first end of the generator rotor, and the rotor detector rotates synchronously with the generator rotor.
According to an embodiment of the present disclosure, the rotor receiver is fixed to the second end of the generator rotor, the rotor receiver rotates synchronously with the generator rotor, and the rotor receiver is disposed opposite to the rotor detector.
According to the embodiment of the present disclosure, the width of the detection light emitted by the rotor detector is equal to the air gap between the rotor and the stator of the generator.
According to an embodiment of the present disclosure, the controlling the alarm device to send out the alarm signal according to the width data includes:
determining that the width data is less than a set value; and controlling the alarm device to send out an alarm signal.
According to the embodiment of the present disclosure, the generator fault detection method further includes:
and controlling the generator to stop according to the alarm signal.
A second aspect of the present disclosure provides a generator fault detection apparatus, including:
the control module is used for controlling a rotor detector of the generator to emit detection light;
the acquisition module is used for acquiring the width of the detection light received by a rotor receiver of the generator and generating width data; and
the alarm module is used for controlling an alarm device to send out an alarm signal according to the width data;
the rotor detector is fixed at the first end of the generator rotor, and the rotor detector rotates synchronously with the generator rotor.
According to an embodiment of the present disclosure, the rotor receiver is fixed to the second end of the generator rotor, the rotor receiver rotates synchronously with the generator rotor, and the rotor receiver is disposed opposite to the rotor detector.
According to an embodiment of the present disclosure, the alarm module includes:
and the judging unit is used for judging that the width data is smaller than a set value and controlling the alarm device to send out an alarm signal.
According to the embodiment of the present disclosure, the width value of the detection light emitted by the rotor detector is equal to the value of the air gap between the rotor and the stator of the generator.
A third aspect of the present disclosure provides an electronic device, comprising:
one or more processors;
a storage device for storing one or more programs,
wherein the one or more programs, when executed by the one or more processors, cause the one or more processors to perform the method described above.
This is disclosed through set up rotor detector and rotor receiver respectively at rotor both ends and come real-time supervision iron core lamination roll-off, iron core not hard up or warp scheduling problem to in time send out the police dispatch newspaper. The fault detection method is intuitive, accurate in test and accurate in fault judgment, and overcomes the defects of inaccurate detection, easy detection omission and the like in the related technology.
Drawings
The foregoing and other objects, features and advantages of the disclosure will be apparent from the following description of embodiments of the disclosure, which proceeds with reference to the accompanying drawings, in which:
FIG. 1 schematically illustrates a flow chart of a generator fault detection method according to an embodiment of the present disclosure;
FIG. 2 schematically illustrates a flow chart for controlling an alarm device to issue an alarm signal based on width data according to an embodiment of the present disclosure;
fig. 3 schematically shows a block diagram of a generator fault detection apparatus according to an embodiment of the present disclosure;
FIG. 4 schematically illustrates a structural schematic diagram of a generator fault detection apparatus according to an embodiment of the present disclosure; and
fig. 5 schematically shows a block diagram of an electronic device adapted to implement a generator fault detection method according to an embodiment of the present disclosure.
[ description of main reference numerals in the drawings ] of the embodiments of the present disclosure
400-generator fault detection means;
401-a control module;
402-an acquisition module;
403-an alarm module;
404-a rotor receiver;
405-stator core laminations;
406 — probe light;
407-a rotor;
408-a stator;
409-rotor detector;
500-an electronic device;
501, a processor;
502-ROM；
503-RAM；
504-a bus;
505 — input/output (I/O) interface;
506-an input section;
507-an output part;
508-a storage section;
509-a communication section;
510-a driver;
511-removable media.
Detailed Description
The present disclosure provides a generator fault detection method, including: controlling a rotor detector of the generator to emit detection light; acquiring the width of the detection light received by a rotor receiver of the generator to generate width data; controlling an alarm device to send out an alarm signal according to the width data; the rotor detector is fixed at the first end of the generator rotor and synchronously rotates along with the generator rotor. The fault detection method is intuitive, accurate in test and accurate in fault judgment, and overcomes the defects of inaccurate detection, easy detection omission and the like in the related technology.
Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood that the description is illustrative only and is not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure.
Before describing a solution to the problem, it is helpful to define some specific vocabulary.
The stator as used herein refers to the stationary portion of the motor or generator. The stator consists of three parts, namely a stator iron core, a stator winding and a machine base. The main function of the stator is to generate a rotating magnetic field.
The rotor is machined from an integral alloy steel forging, and a plurality of longitudinal grooves are radially formed in a rotor body and used for mounting rotor windings and serving as magnetic circuits. The main function of the rotor is to be cut by magnetic lines in the rotating magnetic field to generate (output) current.
The stator core is an important part of the stator and is also a main component of a magnetic circuit of the motor. It is composed of sector piece, ventilating slot piece, positioning rib, upper and lower toothed press plates, tension bolt and supporting plate. The stator iron core is formed by punching a silicon steel sheet into a fan-shaped sheet and overlapping the fan-shaped sheet on a positioning rib (the silicon steel sheet is generally called as an iron core lamination), the positioning rib is welded on a ring plate of a machine base through a supporting plate, and the iron core is compressed into a whole through an upper tooth pressing plate and a lower tooth pressing plate by using a tension bolt. The iron core is also used for placing the winding, and when the generator runs, the iron core lamination is subjected to the comprehensive action of mechanical force, thermal stress and electromagnetic force, and is easy to loosen and slide out of the stator, so that the generator breaks down.
The air gap described herein is the gap between the stator and rotor of the generator. One particular point is the gap between the stator core wall and the rotor pole surface. The size of the air gap has a great influence on the information function and the operation reliability of the generator. Therefore, the generator can be ensured to run reliably by detecting the air gap in real time and avoiding the friction between the stator and the rotor caused by the uneven air gap.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The terms "comprises," "comprising," and the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components.
All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It is noted that the terms used herein should be interpreted as having a meaning that is consistent with the context of this specification and should not be interpreted in an idealized or overly formal sense.
Where a convention analogous to "at least one of A, B and C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B and C" would include but not be limited to systems that have a alone, B alone, C alone, a and B together, a and C together, B and C together, and/or A, B, C together, etc.).
For the purpose of promoting a better understanding of the objects, aspects and advantages of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
Certain embodiments of the present disclosure will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the disclosure are shown. Indeed, various embodiments of the disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements.
Fig. 1 schematically shows a flow chart of a generator fault detection method according to an embodiment of the present disclosure.
As shown in fig. 1, the present disclosure provides a generator fault detection method including operations S100 to S300 of:
in operation S100, a rotor detector of a generator is controlled to emit a probe light.
In operation S200, a width of the probe light received by the rotor receiver of the generator is acquired, and width data is generated.
In operation S300, the alarm device is controlled to emit an alarm signal according to the width data.
The rotor probe described in operation S100 is fixed to a first end of the generator rotor, and the rotor probe rotates synchronously with the generator rotor.
The rotor detector is fixed with the generator rotor, and synchronously rotates along with the generator rotor through the rotor detector, so that the rotor detector can continuously and uninterruptedly sweep the air gap between the stator and the rotor. By the method, the rotor clearance can be swept for one circle in the process of each rotation of the rotor by only one rotor detector. In the sweeping process, once faults such as stator core lamination slipping-out or lamination loss deformation occur, the faults can be detected in real time through sweeping, the whole fault detection process is called as a tube, and the mode that the detection is carried out by arranging a plurality of sensors on the stator in the related technology is avoided.
This is disclosed through set up rotor detector and rotor receiver respectively at rotor both ends and come real-time supervision iron core lamination roll-off, iron core not hard up or warp scheduling problem to in time send out the police dispatch newspaper. The fault detection method is intuitive, accurate in test and accurate in fault judgment, and overcomes the defects of inaccurate detection, easy detection omission and the like in the related technology.
In the related art, although the looseness of the iron core can be checked by arranging the sensors at fixed points on the stator, the number of the sensors which can be arranged is limited because the stator is a circle, the positions where the sensors are not arranged cannot be detected, and the generator fails due to the fact that the detection is missed when the position of the sensor is limited due to the arrangement of monitoring points. For solving the above-mentioned problem among the prior art, this disclosure is fixed on the basis of generator rotor first end at the rotor detector, is fixed in generator rotor's second tip again with the rotor receiver, and the contralateral of rotor detector on generator rotor promptly, the rotor receiver rotates along with generator rotor synchronization, and the rotor receiver sets up with the rotor detector relatively.
According to the fault detection method, fault detection can be completed only by using a set of rotor detector and rotor receiver which are arranged oppositely, fault removal time and maintenance cost are reduced, and the limitation that a sensor is arranged at a fixed point on a stator to detect the clearance of the rotor in the related technology is avoided.
As another embodiment of the present disclosure, the width of the detection light emitted by the rotor detector may be set to be equal to the air gap between the rotor and the stator of the generator. By setting the width of the detection light to be equal to the air gap of the stator and the rotor, the detection light emitted by the rotor detector can be completely filled into the air gap of the stator and the rotor, and the sensitivity of the fault detection method is further improved.
Fig. 2 schematically shows a flow chart for controlling the alarm device to issue an alarm signal in dependence of the width data.
Referring to fig. 2, as another embodiment of the present disclosure, the operation S300 of controlling the alarm device to send out the alarm signal according to the width data specifically includes the following operations S301 and S302:
in operation S301, it is determined that the width data is less than the set value.
In operation S302, the alarm apparatus is controlled to emit an alarm signal.
When the rotor receiver receives the detection light, the width of the detection light is obtained and width data is generated, and whether the width data is smaller than a set value or not is judged. And when the width data is smaller than the set value, controlling the alarm device to send out an alarm signal. The alarm signal may be a buzzer sounding an alarm or an indicator light signaling a flashing light.
Furthermore, the generator can be controlled to automatically stop according to the alarm signal, so that the generator is prevented from running with faults, and the generator is protected. After the generator is shut down and the alarm signal is confirmed by the staff, further diagnosis and verification can be carried out by technicians to make a reasonable and effective maintenance scheme.
The set value stated in operation S301 is within the range of 5% to 10% of the generator stator rotor air gap. A large amount of experimental data show that the accuracy of generator fault detection can be improved by setting the set value within the range of 5% -10% of the air gap.
Based on the above generator fault detection method, the present disclosure also provides a generator fault detection apparatus 400. The apparatus will be described in detail below with reference to fig. 3.
Fig. 3 schematically shows a block diagram of a generator fault detection apparatus according to an embodiment of the present disclosure.
As shown in fig. 3, the generator failure detection apparatus 400 of this embodiment includes: a control module 401, an acquisition module 402 and an alarm module 403.
The control module 401 is used for controlling the rotor detector of the generator to emit detection light. In an embodiment, the control module 401 may be configured to perform the operation S100 described above, which is not described herein again.
The obtaining module 402 is configured to obtain a width of the probe light received by a rotor receiver of the generator, and generate width data. In an embodiment, the obtaining module 402 may be configured to perform the operation S200 described above, which is not described herein again.
The alarm module 403 is used for controlling the alarm device to send out an alarm signal according to the width data. In an embodiment, the alarm module 403 may be configured to perform the operation S300 described above, which is not described herein again.
According to the embodiment of the present disclosure, any plurality of the control module 401, the obtaining module 402 and the alarm module 403 may be combined and implemented in one module, or any one of them may be split into a plurality of modules. Alternatively, at least part of the functionality of one or more of these modules may be combined with at least part of the functionality of the other modules and implemented in one module. According to an embodiment of the present disclosure, at least one of the control module 401, the obtaining module 402, and the alarm module 403 may be implemented at least partially as a hardware circuit, such as a Field Programmable Gate Array (FPGA), a Programmable Logic Array (PLA), a system on a chip, a system on a substrate, a system on a package, an Application Specific Integrated Circuit (ASIC), or may be implemented in hardware or firmware by any other reasonable manner of integrating or packaging a circuit, or in any one of three implementations of software, hardware, and firmware, or in a suitable combination of any of them. Alternatively, at least one of the control module 401, the obtaining module 402 and the alarm module 403 may be at least partially implemented as a computer program module, which when executed may perform a corresponding function.
The rotor detector in the generator fault detection apparatus 400 is fixed to a first end of the generator rotor, and the rotor detector rotates synchronously with the generator rotor.
The rotor receiver of the generator fault detection apparatus 400 described above is fixed to the second end of the generator rotor, and rotates synchronously with the generator rotor, and the rotor receiver is disposed opposite to the rotor detector.
Among the above-mentioned generator fault detection device 400, because rotor detector and rotor receiver set up in groups, and the two is along with rotor synchronous revolution, then this generator fault detection device 400 then can carry out continuous incessant sweeping to the air gap between stator and rotor in real time, as long as there is this generator fault detection device 400 of one set just can be at the rotor every time rotatory week, sweep stator and rotor clearance a week, in case there is iron core lamination roll-off or iron core lamination to take place trouble such as deformation, just can be through sweeping the process instant detection trouble, discovery problem very audio-visual, the problem that traditional detection device part position can't detect and can't the direct judgement trouble has been avoided.
As another embodiment of the present disclosure, the alarm module 403 may further include a determination unit. The judging unit is used for judging that the width data is smaller than a set value and controlling the alarm device to send out an alarm signal.
As a further embodiment of the present disclosure, the generator fault detection apparatus 400 further includes a shutdown module. The shutdown module can automatically shut down the generator after the generator fails, so that the generator is prevented from running with faults, and the generator is protected.
Further, the width of the detection light emitted by the rotor detector can be set to be equal to the air gap between the rotor and the stator of the generator. The detection light emitted by the rotor detector can be completely filled into the air gap between the stator and the rotor, so that the detection sensitivity of the fault detection device is improved.
Fig. 4 schematically shows a structural schematic diagram of a generator fault detection device according to an embodiment of the present disclosure.
As shown in fig. 4, a rotor detector 409 and a rotor receiver 404 are respectively disposed at two ends of the rotor 407 on the same bus. In the working process of the generator fault detection device 400, the rotor detector 409 emits the detection light 406, and in this embodiment, the width of the detection light 406 may be set to be the same as the width of the stator-rotor air gap, so that the rotor receiver can sufficiently receive the detection light 406, and the detection sensitivity of the generator fault detection device 400 is further provided.
When the loose stator core lamination 405 on the stator 408 slides down into the air gap 410 between the stator and the rotor, part of the detection light 406 is blocked by the stator core lamination 405 sliding down into the air gap 410, and the rotor receiver 404 can only receive the unblocked detection light 406. And further analyzing the width of the detection light 406 received by the receiver 404, and if the width value is smaller than a set value, controlling an alarm device to send out an alarm signal to realize the fault detection of the generator.
Fig. 5 schematically shows a block diagram of an electronic device adapted to implement a generator fault detection method according to an embodiment of the present disclosure.
As shown in fig. 5, an electronic device 500 according to an embodiment of the present disclosure includes a processor 501 that can perform various appropriate actions and processes according to a program stored in a Read Only Memory (ROM)502 or a program loaded from a storage section 908 into a Random Access Memory (RAM) 503. The processor 501 may comprise, for example, a general purpose microprocessor (e.g., a CPU), an instruction set processor and/or associated chipset, and/or a special purpose microprocessor (e.g., an Application Specific Integrated Circuit (ASIC)), among others. The processor 501 may also include onboard memory for caching purposes. Processor 501 may include a single processing unit or multiple processing units for performing different actions of a method flow according to embodiments of the disclosure.
In the RAM 503, various programs and data necessary for the operation of the electronic apparatus 500 are stored. The processor 501, the ROM 502, and the RAM 503 are connected to each other by a bus 504. The processor 501 performs various operations of the method flows according to the embodiments of the present disclosure by executing programs in the ROM 502 and/or the RAM 503. Note that the programs may also be stored in one or more memories other than the ROM 502 and the RAM 503. The processor 501 may also perform various operations of method flows according to embodiments of the present disclosure by executing programs stored in the one or more memories.
According to an embodiment of the present disclosure, electronic device 500 may also include an input/output (I/O) interface 505, input/output (I/O) interface 505 also being connected to bus 504. The electronic device 500 may also include one or more of the following components connected to the I/O interface 505: an input portion 506 including a keyboard, a mouse, and the like; an output portion 507 including a display such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker; a storage portion 508 including a hard disk and the like; and a communication section 509 including a network interface card such as a LAN card, a modem, or the like. The communication section 509 performs communication processing via a network such as the internet. The driver 510 is also connected to the I/O interface 505 as necessary. A removable medium 511 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 510 as necessary, so that a computer program read out therefrom is mounted into the storage section 508 as necessary.
Those skilled in the art will appreciate that various combinations and/or combinations of features recited in the various embodiments and/or claims of the present disclosure can be made, even if such combinations or combinations are not expressly recited in the present disclosure. In particular, various combinations and/or combinations of the features recited in the various embodiments and/or claims of the present disclosure may be made without departing from the spirit or teaching of the present disclosure. All such combinations and/or associations are within the scope of the present disclosure.
The embodiments of the present disclosure have been described above. However, these examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Although the embodiments are described separately above, this does not mean that the measures in the embodiments cannot be used in advantageous combination. The scope of the disclosure is defined by the appended claims and equivalents thereof. Various alternatives and modifications can be devised by those skilled in the art without departing from the scope of the present disclosure, and such alternatives and modifications are intended to be within the scope of the present disclosure.
Claims (10)
1. A generator fault detection method, comprising:
controlling a rotor detector of the generator to emit detection light;
acquiring the width of the detection light received by a rotor receiver of the generator to generate width data;
controlling an alarm device to send out an alarm signal according to the width data;
the rotor detector is fixed at the first end of the generator rotor, and the rotor detector rotates synchronously with the generator rotor.
2. The generator fault detection method of claim 1, wherein the rotor receptor is secured to a second end of the generator rotor, the rotor receptor rotating synchronously with the generator rotor, the rotor receptor being disposed opposite the rotor probe.
3. The generator fault detection method of claim 1, wherein the rotor detector emits a detection light having a width equal to an air gap between a rotor of the generator and a stator of the generator.
4. The generator fault detection method of claim 1, wherein said controlling an alarm device to issue an alarm signal in accordance with the width data comprises:
determining that the width data is less than a set value;
and controlling the alarm device to send out an alarm signal.
5. The generator fault detection method of claim 1, further comprising:
and controlling the generator to stop according to the alarm signal.
6. A generator fault detection device comprising:
the control module is used for controlling a rotor detector of the generator to emit detection light;
the acquisition module is used for acquiring the width of the detection light received by a rotor receiver of the generator and generating width data; and
the alarm module is used for controlling an alarm device to send out an alarm signal according to the width data;
the rotor detector is fixed at the first end of the generator rotor, and the rotor detector rotates synchronously with the generator rotor.
7. The generator fault detection device of claim 6, wherein the rotor receiver is secured to a second end of the generator rotor, the rotor receiver rotating synchronously with the generator rotor, the rotor receiver being disposed opposite the rotor probe.
8. The generator fault detection device of claim 6, wherein the alarm module comprises:
and the judging unit is used for judging that the width data is smaller than a set value and controlling the alarm device to send out an alarm signal.
9. The generator fault detection device of claim 6, wherein the rotor detector emits a detection light having a width equal to an air gap between a rotor and a stator of the generator.
10. An electronic device, comprising:
one or more processors;
a storage device for storing one or more programs,
wherein the one or more programs, when executed by the one or more processors, cause the one or more processors to perform the method of any of claims 1-5.
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| CN202111420008.XA CN114062926A (en) | 2021-11-26 | 2021-11-26 | Generator fault detection method and device and electronic equipment |
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| CN202111420008.XA CN114062926A (en) | 2021-11-26 | 2021-11-26 | Generator fault detection method and device and electronic equipment |
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