CN210268912U - Generator excitation carbon brush safety early warning system - Google Patents
Generator excitation carbon brush safety early warning system Download PDFInfo
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- CN210268912U CN210268912U CN201921440842.3U CN201921440842U CN210268912U CN 210268912 U CN210268912 U CN 210268912U CN 201921440842 U CN201921440842 U CN 201921440842U CN 210268912 U CN210268912 U CN 210268912U
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 52
- 230000005284 excitation Effects 0.000 title claims abstract description 52
- 238000004891 communication Methods 0.000 claims description 44
- 238000003384 imaging method Methods 0.000 claims description 36
- 238000012545 processing Methods 0.000 claims description 12
- 238000001931 thermography Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 3
- 238000007781 pre-processing Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 12
- 238000012544 monitoring process Methods 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000004044 response Effects 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model relates to the technical field of excitation carbon brush safety early warning of a generator, and discloses a generator excitation carbon brush safety early warning system, which realizes the real-time accurate analysis and early warning of a monitored target, eliminates the defects of dead angles, no tracking analysis, low precision, gap measurement and high labor intensity of personnel in the original detection mode, leads the potential safety hazard of the excitation carbon brush of the generator to be comprehensively early warned, and provides a reliable bottom data base for realizing a smart power plant; the utility model discloses the excitation carbon brush monitoring of generator has been used successfully with infrared thermal imagery, and application computer technology realizes drawing the carbon brush region on the thermal imagery video to with the only corresponding relation of formation of physics carbon brush position, carry out non-contact intellectual detection system to the carbon brush, improved generator excitation system steady operation monitoring capability, help improving the accident of power plant early warning ability in advance, analysis level and response efficiency.
Description
Technical Field
The utility model belongs to the technical field of the excitation carbon brush safety precaution's of generator technical field, especially a generator excitation carbon brush safety precaution system.
Background
With the expansion of the scale of the power system, the appearance of a long-distance heavy-load power transmission line and the adoption of a large-scale generator, the damping of the whole power system is continuously weakened by a rapid excitation system consisting of a semiconductor excitation regulator and a thyristor rectification power cabinet. When a power system breaks down or is disturbed by other factors, low-frequency oscillation occurs for a long time, so that the generator excitation system breaks down and rises, the generator set cannot work normally, and great risk is brought to safe and stable operation of a large generator and a power grid. How to adopt effective measures to improve the stable operation of an excitation system becomes a problem which needs to be solved urgently by a power system.
When the generator is in operation, factors such as increased contact resistance of an excitation carbon brush, looseness of a brush holder, plug offset or low-frequency oscillation and the like cause overtemperature or ring fire at contact positions such as a magnetic brush terminal and the like to occur occasionally. In order to reduce the excitation failure rate, each component of the excitation system is usually arranged in a closed space, so that a worker cannot comprehensively and timely monitor and know the internal situation, cannot timely master the degradation situation of each component of the excitation system, often misses the best opportunity for processing safety abnormity, and accidents are caused.
At present, a DCS (distributed control system), an electrical monitoring system or a PMU (power management unit) device has no on-line monitoring function for the temperature of a carbon brush of an excitation system of a power plant unit, the temperature and the dust of a power cabinet, the temperature of an iron core of an excitation transformer, a cable connector and the like, and no means for directly measuring the stable operation parameters of components such as an excitation carbon brush of a generator and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the above-mentioned problem, a generator excitation carbon brush safety precaution system is provided, carries out online safety analysis and early warning to the generator excitation carbon brush of power plant, improves the operation decision timeliness and the early warning of power plant and controls the ability in advance.
The utility model discloses a generator excitation and carbon brush safety early warning system, which comprises a thermal infrared temperature imaging unit, a mounting bracket, a preprocessor, a wireless communication module and a system host; wherein,
the thermal infrared temperature imaging unit is used for carrying out thermal imaging and temperature acquisition on the generator excitation carbon brush and comprises a thermal imaging detector, a lens, a baffle, a processing circuit and a communication circuit;
the mounting bracket comprises a fixed base, a supporting rod, a plurality of rocker arms and a communication line; the thermal infrared temperature imaging unit is mounted on the rocker arm.
The front processor is in wired connection with the thermal infrared temperature imaging units through a communication interface of the front processor, and one front processor can be in butt joint with a plurality of thermal infrared temperature imaging units to complete the processing and transmission of thermal image data of the thermal infrared temperature imaging units;
the wireless communication module comprises a wireless communication module route and a wireless communication module substation, the wireless communication module substation is connected with the preprocessor to complete preprocessing and communication functions, and a wireless local area network is established through the wireless communication module route to complete the communication functions of all the wireless communication modules of the system;
the system host is in routing connection with the wireless communication module to complete thermal image data acquisition, processing, storage, analysis, display, alarm and output functions of all the thermal infrared temperature imaging units.
Further, the front end processor and the wireless communication module are assembled in one device and are installed near the installation bracket.
Further, the front-end processor at least simultaneously processes thermal image data collected by 3 thermal infrared temperature imaging units.
Compared with the prior art, the utility model provides a pair of generator excitation carbon brush safety inspection method, through setting up hot infrared temperature imaging unit, the installing support, the preprocessor, wireless communication module and system host computer, change the temperature of personnel's hand-held type or the current coarse detection into online thermal imagery is accurate, comprehensive detection, and utilize the installing support that designs, the preprocessor realizes carrying out accurate analysis, the early warning to the monitoring target in real time, eliminated original detection mode because there is the dead angle, no tracking analysis, the precision is not high, the clearance is measured, personnel intensity of labour is big shortcoming, make the potential safety hazard of the excitation carbon brush of generator obtain comprehensively, early warning, provide a reliable bottom data basis for realizing the wisdom power plant; the early warning system successfully applies the infrared thermal imaging technology to the excitation carbon brush monitoring of the generator, and uses the computer technology to realize the drawing of the carbon brush area on the thermal image video, and form the unique corresponding relation with the physical carbon brush position to carry out non-contact intelligent detection on the carbon brush, thereby improving the stable operation monitoring capability of the generator excitation system, and being beneficial to improving the early warning capability, the analysis level and the response efficiency of the power plant accidents.
Drawings
Fig. 1 is a flowchart of a safety detection method for an excitation carbon brush of a generator according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a generator excitation and carbon brush safety warning system provided in an embodiment of the present invention;
fig. 3 is a data flow chart of a generator excitation and carbon brush safety warning system provided in an embodiment of the present invention;
fig. 4 is an actual assembly diagram of a mounting bracket of a generator excitation carbon brush safety early warning system provided by the embodiment of the invention on a generator;
fig. 5 is a front view of an actual application of a generator excitation carbon brush safety early warning system on a generator provided by an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
Referring to fig. 2-5, the utility model provides a generator excitation and carbon brush safety early warning system, which comprises a thermal infrared temperature imaging unit 1, a mounting bracket 2, a preprocessor 3, a wireless communication module 4 and a system host 5; wherein,
the thermal infrared temperature imaging unit 1 is used for carrying out thermal imaging and temperature acquisition on the generator excitation carbon brush and comprises a thermal imaging detector, a lens, a baffle, a processing circuit and a communication circuit.
The mounting bracket 2 comprises a fixed base, a support rod 21, a plurality of rocker arms 22 and a communication line; the thermal infrared temperature imaging unit 1 is mounted on the rocker arm 22;
the pre-processor 3 is in wired connection with the thermal infrared temperature imaging units 1 through a communication interface of the pre-processor 3, and one pre-processor 3 can be in butt joint with a plurality of thermal infrared temperature imaging units 1 to complete the processing and transmission of thermal image data of the thermal infrared temperature imaging units 1;
the wireless communication module 4 comprises a wireless communication module route 41 and a wireless communication module substation 42, the wireless communication module substation 42 is connected with the preprocessor 3 to complete preprocessing and communication functions, and a wireless local area network is established through the wireless communication module route 41 to complete the communication functions of all the wireless communication modules 4 of the system;
and the system host 5 is connected with the wireless communication module route 41 to complete thermal image data acquisition, processing, storage, analysis, display, alarm and output functions of all the thermal infrared temperature imaging units 1.
The generator excitation and carbon brush safety early warning system provided by the above-mentioned, through setting up thermal infrared temperature imaging unit 1, installing support 2, preprocessor 3, wireless communication module 4 and system host computer 5, it is accurate to change the temperature or the current coarse detection of personnel's hand-held type into online thermal imagery, detect comprehensively, and utilize installing support 2 designed, preprocessor 3 realizes carrying out accurate analysis, the early warning to the monitoring target in real time, the shortcoming that original detection mode is because there is the dead angle, there is not tracking analysis, the precision is not high, the clearance is measured, personnel intensity of labour is big has been eliminated, make the potential safety hazard of the excitation carbon brush of generator obtain comprehensively, early warning, provide a reliable bottom data basis for realizing the wisdom power plant.
The early warning system successfully applies the infrared thermal imaging technology to the excitation carbon brush monitoring of the generator, and uses the computer technology to realize the drawing of the carbon brush area on the thermal image video, and form the unique corresponding relation with the physical carbon brush position to carry out non-contact intelligent detection on the carbon brush, thereby improving the stable operation monitoring capability of the generator excitation system, and being beneficial to improving the early warning capability, the analysis level and the response efficiency of the power plant accidents.
Preferably, the pre-processor 3 and the wireless communication module 4 are assembled in one device and mounted near the mounting bracket 2; thus, the structure is simple and the installation is simple.
Preferably, the pre-processor 3 processes thermal image data collected by 3 thermal infrared temperature imaging units 1 at least at the same time; therefore, the configuration utilization rate is high, and the cost is reduced.
In addition, the early warning system can be widely applied to safety detection and hidden danger early warning of devices or places such as petrochemical industry, steel, storage and the like.
Referring to fig. 1, a flow chart of a method for detecting the safety of a generator excitation carbon brush by using the early warning system provided by the utility model is shown, which comprises the following steps:
s1, selecting a collection unit, calculating pixels and a field angle of the thermal infrared temperature imaging unit 1 according to the diameter and the width of an excitation carbon brush and a slip ring of the generator, and selecting the thermal infrared temperature imaging unit 1 provided with a proper focal plane sensor and a proper thermal imaging lens;
s2, determining the number of the thermal infrared temperature imaging units 1, and estimating the number of the thermal infrared temperature imaging units 1 to be used according to the number of the excitation carbon brushes of the generator and the arrangement mode of the brush handles;
it should be noted that 1-2 brush holders are generally provided with one thermal infrared temperature imaging unit 1, and the whole generator is generally provided with 8-12 thermal infrared temperature imaging units 1.
S3, determining the installation mode of the thermal infrared temperature imaging unit 1, so that all excitation carbon brushes can enter the field angle of the thermal infrared temperature imaging unit 1 and the temperature of the excitation carbon brushes can be acquired;
s4, acquiring and transmitting data, acquiring thermal image data of the temperature of the excitation brush ring and the carbon brush of the generator by the thermal infrared temperature imaging unit 1, receiving a thermal image data signal of the thermal infrared temperature imaging unit 1 by the pre-processor 3, processing the thermal image data signal and transmitting the processed thermal image data signal to the system host 5;
s5, comprehensively processing the acquired thermal image data signals by the system host 5, and respectively displaying the thermal image video, the electronic configuration diagram and the carbon brush maintenance record content on the system host 5;
s6, the system host 5 provides a manual partition drawing tool, draws rectangular frames (all carbon brushes in each brush handle need to be contained in the rectangular frames) on the thermal image video picture according to the brush handle display area, and names and numbers the rectangular frames according to corresponding brush handle names;
s7, the system host 5 analyzes and calculates the temperature lattice in the rectangular frame to obtain the hot spot value and fluctuation value, and tracks and analyzes the hot spot and temperature fluctuation, and once: a. the fluctuation value is continuously increased, the corresponding hot point value is synchronously and continuously increased, b, the hot point value exceeds the temperature early warning value, c, the hot point temperature difference between the brush handles is overlarge and exceeds one of the three conditions of the early warning value, and the system gives an alarm and outputs an alarm signal.
Further, the safety detection method for the generator excitation carbon brush further comprises the following steps: the system host 5 performs spare part and maintenance management on the excitation carbon brush; therefore, the full-life management of the excitation of the generator and the carbon brush of the generator is realized.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. A generator excitation and carbon brush safety early warning system is characterized by comprising a thermal infrared temperature imaging unit, a mounting bracket, a front processor, a wireless communication module and a system host; wherein,
the thermal infrared temperature imaging unit is used for carrying out thermal imaging and temperature acquisition on the generator excitation carbon brush and comprises a thermal imaging detector, a lens, a baffle, a processing circuit and a communication circuit;
the mounting bracket comprises a fixed base, a supporting rod, a plurality of rocker arms and a communication line; the thermal infrared temperature imaging unit is mounted on the rocker arm;
the front processor is in wired connection with the thermal infrared temperature imaging units through a communication interface of the front processor, and one front processor can be in butt joint with a plurality of thermal infrared temperature imaging units to complete the processing and transmission of thermal image data of the thermal infrared temperature imaging units;
the wireless communication module comprises a wireless communication module route and a wireless communication module substation, the wireless communication module substation is connected with the preprocessor to complete preprocessing and communication functions, and a wireless local area network is established through the wireless communication module route to complete the communication functions of all the wireless communication modules of the system;
the system host is in routing connection with the wireless communication module to complete thermal image data acquisition, processing, storage, analysis, display, alarm and output functions of all the thermal infrared temperature imaging units.
2. The generator excitation and carbon brush safety precaution system as claimed in claim 1, wherein said pre-processor and wireless communication module are assembled in one unit and mounted near said mounting bracket.
3. The generator excitation and carbon brush safety pre-warning system as claimed in claim 1 or 2, wherein the pre-processor processes thermal image data collected by at least 3 thermal infrared temperature imaging units simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921440842.3U CN210268912U (en) | 2019-08-30 | 2019-08-30 | Generator excitation carbon brush safety early warning system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921440842.3U CN210268912U (en) | 2019-08-30 | 2019-08-30 | Generator excitation carbon brush safety early warning system |
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| CN210268912U true CN210268912U (en) | 2020-04-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487417A (en) * | 2019-08-30 | 2019-11-22 | 深圳大成智能电气科技有限公司 | A kind of generator excitation carbon brush safety detection method and early warning system |
| CN112781731A (en) * | 2020-12-30 | 2021-05-11 | 国网福建省电力有限公司 | Generator carbon brush temperature measuring device and method |
-
2019
- 2019-08-30 CN CN201921440842.3U patent/CN210268912U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487417A (en) * | 2019-08-30 | 2019-11-22 | 深圳大成智能电气科技有限公司 | A kind of generator excitation carbon brush safety detection method and early warning system |
| CN112781731A (en) * | 2020-12-30 | 2021-05-11 | 国网福建省电力有限公司 | Generator carbon brush temperature measuring device and method |
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