CN204740065U - On -load voltage regulating switch vibration signal on -line monitoring device - Google Patents
On -load voltage regulating switch vibration signal on -line monitoring device Download PDFInfo
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- CN204740065U CN204740065U CN201520288392.6U CN201520288392U CN204740065U CN 204740065 U CN204740065 U CN 204740065U CN 201520288392 U CN201520288392 U CN 201520288392U CN 204740065 U CN204740065 U CN 204740065U
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- regulating switch
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 45
- 238000012806 monitoring device Methods 0.000 title abstract 2
- 230000001133 acceleration Effects 0.000 claims abstract description 20
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 238000010891 electric arc Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013481 data capture Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Abstract
The utility model discloses an on -load voltage regulating switch vibration signal on -line monitoring device, including acceleration sensor, permanent magnet, charge amplifier, signal adapter, AD conversion module, microprocessor ARM, a GSM module, the 2nd GSM module, server, memory, display and relay J, the beneficial effects are that: the utility model discloses a various vibration signals when monitoring on -load voltage regulating switch switches, alright monitor out that on -load voltage regulating switch switching time's change, male contact is bad, the contact wearing and tearing, spring elasticity descends and trouble such as electric arc to can diagnose out voltage regulating switch whether to break down, the utility model discloses can reflect on -load voltage regulating switch's damaged condition in real time on line, in time provide early warning information, remind fortune dimension personnel to take measures to prevent the emergence of on -load voltage regulating switch trouble.
Description
Technical field
The utility model belongs to ULTC on-line monitoring technique field, is specifically related to a kind of on-load voltage regulating switch vibration signal on-Line Monitor Device.
Background technology
On-load voltage regulating switch (OLTC, On-load Tap Changer) is that transformer is in operation the assembly of unique hot line job, and it is the core component that transformer completes pressure regulation, is also one of important matching component of transformer.It, by under the condition of not interrupting transformer load, carries out the operation of tap conversion, changes the distance number ratio of transformer.Can on-load voltage regulating switch meet transformer reliability of operation over a long time, directly has influence on the dependability of transformer.Domestic average statistics data show, OLTC fault accounts for more than 20% of transformer fault, is only second to winding failure.With winding failure unlike, people are abundant not to the understanding of on-load voltage regulating switch fault, this is mainly because on-load voltage regulating switch action also infrequently in the past, not deep enough to its research, therefore run safely and reliably in order to ensure tap changer, carry out the research of monitoring to its state and fault diagnosis, improve the intelligent level of fault detect, ensure that the safe operation of ULTC has great importance.
Utility model content
Technical problem to be solved in the utility model be to provide a kind of can reflect on-load voltage regulating switch online in real time damaged condition, provide early warning information in time, remind operation maintenance personnel to take measures the on-load voltage regulating switch vibration signal on-Line Monitor Device preventing on-load voltage regulating switch from breaking down.
For solving the problems of the technologies described above adopted technical scheme be: a kind of on-load voltage regulating switch vibration signal on-Line Monitor Device, comprises acceleration transducer, permanent magnet, charge amplifier, signal adapter, A/D modular converter, microprocessor ARM, the first gsm module, the second gsm module, server, storer, display and relay J;
Described acceleration transducer is adsorbed on the nut of the connection terminal for fixing on-load voltage regulating switch by permanent magnet; The respective input of charge amplifier described in the output termination of described acceleration transducer; The respective input of signal adapter described in the output termination of described charge amplifier; The respective input of A/D modular converter described in the output termination of described signal adapter; The corresponding port of described A/D modular converter and described microprocessor ARM is bi-directionally connected;
The COM port of described microprocessor ARM connects the respective input of described first gsm module; Described first gsm module and described second gsm module are by GSM network wireless connections; The respective input of server described in the output termination of described second gsm module;
The GPIO port of described microprocessor ARM meets the swing arm J-4 of described relay J; The normally closed contact J-3 ground connection of described relay J; The stationary contact J-2 of described relay J connects+3.3V direct supply; The coil J-1 of described relay J is connected on the two ends of+12V direct supply after connecting with the auxiliary contact K of on-load voltage regulating switch;
The input end of described display and storer connects the corresponding output end of described microprocessor ARM respectively.
The model of described acceleration transducer is ADXL345; The model of described signal adapter is LC0208; The model of described charge amplifier is DHF-10; The model of described A/D modular converter is AD5780; The model of described microprocessor ARM is SamsungS3C2440; Described first gsm module is Samsung GT-Y3400; Described second gsm module is Samsung GT-Y3400; Described server is Dell PowerEdge 29; Described display is upright FG769-VC; The model of described storer is M25P128-VMF6TP.
The beneficial effects of the utility model are: various vibration signals when the utility model is switched by monitoring on-load voltage regulating switch, just change, the contact that can monitor out on-load voltage regulating switch switching time are bad, contact abrasion, spring decline and the fault such as electric arc, thus tap changer can be diagnosed out to be in normal condition, still there occurs fault; The utility model can the damaged condition of real-time online reflection on-load voltage regulating switch, provides early warning information in time, reminds operation maintenance personnel to take measures to prevent the generation of on-load voltage regulating switch fault.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model.
Embodiment
Embodiment is as shown in Figure 1 known, and it comprises acceleration transducer, permanent magnet, charge amplifier, signal adapter, A/D modular converter, microprocessor ARM, the first gsm module, the second gsm module, server, storer, display and relay J;
Described acceleration transducer is adsorbed on the nut of the connection terminal for fixing on-load voltage regulating switch by permanent magnet; The respective input of charge amplifier described in the output termination of described acceleration transducer; The respective input of signal adapter described in the output termination of described charge amplifier; The respective input of A/D modular converter described in the output termination of described signal adapter; The corresponding port of described A/D modular converter and described microprocessor ARM is bi-directionally connected;
The COM port of described microprocessor ARM connects the respective input of described first gsm module; Described first gsm module and described second gsm module are by GSM network wireless connections; The respective input of server described in the output termination of described second gsm module;
The GPIO port of described microprocessor ARM meets the swing arm J-4 of described relay J; The normally closed contact J-3 ground connection of described relay J; The stationary contact J-2 of described relay J connects+3.3V direct supply; The coil J-1 of described relay J is connected on the two ends of+12V direct supply after connecting with the auxiliary contact K of on-load voltage regulating switch;
The input end of described display and storer connects the corresponding output end of described microprocessor ARM respectively.
The model of described acceleration transducer is ADXL345; The model of described signal adapter is LC0208; The model of described charge amplifier is DHF-10; The model of described A/D modular converter is AD5780; The model of described microprocessor ARM is SamsungS3C2440; Described first gsm module is Samsung GT-Y3400; Described second gsm module is Samsung GT-Y3400; Described server is Dell PowerEdge 29; Described display is upright FG769-VC; The model of described storer is M25P128-VMF6TP.
The course of work of the present utility model is as follows: described acceleration transducer obtains the vibration signal of on-load voltage regulating switch; The voltage signal that charge amplifier degree of will speed up sensor exports carries out amplification process; Signal adapter the voltage signal after amplifying process is carried out the bandpass filtering of 100Hz-15kHz and isolated transmission to the input end of A/D modular converter; Described microprocessor ARM judges whether on-load voltage regulating switch is switching state: when on-load voltage regulating switch has switching action, the auxiliary contact K of on-load voltage regulating switch closes, relay J coil J-1 obtains electric, the normally opened contact J-2 of relay J closes, the GPIO end making described microprocessor ARM is high level, then described microprocessor ARM controls described A/D modular converter and converts simulating signal to digital signal, and described microprocessor ARM carries out data acquisition simultaneously; On-load voltage regulating switch machine performance information transmission is given described first gsm module by the COM port of described microprocessor ARM; On-load voltage regulating switch work state information is sent to described second gsm module by GSM network by described first gsm module; Described second gsm module receives on-load voltage regulating switch work state information, and described on-load voltage regulating switch work state information is transferred to described server; Described storer and display store and show voltage adjustment of on-load switch working state information respectively.
On-load voltage regulating switch is when switching, and the motion of its inner principal structural elements is clashed into and friction all can cause surperficial vibration.Such as contact is in a deciliter process, due to along with machinery, chemistry, electricity and hot a series of destructions, make contact material consumption, cause the convex injustice of contact four or distortion, thus causing contact pressure, contact resistance and moment Parameters variation, this makes the vibration performance of on-load voltage regulating switch also change thereupon.When being switched by on-load voltage regulating switch, the various vibration signals of record, can provide the bulk information of mechanical aspects in voltage adjustment of on-load switching over process.Vibration signal during by normally running with tap changer contrasts, change, the contact that just can be tested with voltage adjustment of on-load switching time are bad, contact abrasion, spring decline and the fault such as electric arc, thus tap changer can be diagnosed out to be in normal condition, still there occurs fault.Therefore be monitoring target with vibration signal, Efficient Evaluation can be carried out to the machine performance of on-load voltage regulating switch.
Specific practice is the suitable position at tap changer, as having the position of larger oscillation intensity and larger signal to noise ratio (S/N ratio), installs acceleration vibration transducer.Tap changer gathers vibration signal when carrying out blocked operation, as the foundation of diagnosis after signal transacting, analysis.
Operationally, the contact separation between dynamic and static contact can produce pulse shock power to on-load tap-changer of transformer, has therefore just had vibration signal.This signal is sent to connection terminal via static contact or transformer oil, then by transformer oil to oil tank of transformer.Be not difficult to find out that the vibration signal on on-line checkingi on-load voltage regulating switch connection terminal or oil tank of transformer surface just can detect the situation of on-load voltage regulating switch fault.
Piezoelectric acceleration transducer utilizes spring mass system principle to measure.Can produce the power be directly proportional to acceleration after sensitive core body quality is subject to vibration acceleration effect, piezoelectric can form by after the effect of this power the charge signal be directly proportional to this power along its surface.It has that dynamic range is large, wide frequency range, little by external interference, sturdy and durable and piezoelectric stressed after do not need the features such as extraneous power supply from producing charge signal, be the most widely used vibration measurement sensor.
The piezoelectric acceleration transducer being integrated with charge amplifier selected by vibration transducer.Vibration acceleration signal can be converted to the voltage signal be directly proportional.Acquired vibration signal is directly stored in computing machine by usb data capture card.In order to effectively compare vibration signal. nut is fixed on connection terminal, with permanent magnet, multiple vibration transducer is adsorbed on nut again, the voltage analog signal that vibration signal when simultaneously can extract an OLTC action on each connection terminal is exported by signal adapter is converted to digital signal through A/D capture card, and sends into portable computer and carry out data processing.
The damaged condition of the utility model real-time online reflection on-load voltage regulating switch, provides early warning information in time, reminds operation maintenance personnel to take measures to prevent the generation of on-load voltage regulating switch fault.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all make within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., be all included within protection domain of the present utility model.
Claims (2)
1. an on-load voltage regulating switch vibration signal on-Line Monitor Device, is characterized in that: comprise acceleration transducer, permanent magnet, charge amplifier, signal adapter, A/D modular converter, microprocessor ARM, the first gsm module, the second gsm module, server, storer, display and relay J;
Described acceleration transducer is adsorbed on the nut of the connection terminal for fixing on-load voltage regulating switch by permanent magnet; The respective input of charge amplifier described in the output termination of described acceleration transducer; The respective input of signal adapter described in the output termination of described charge amplifier; The respective input of A/D modular converter described in the output termination of described signal adapter; The corresponding port of described A/D modular converter and described microprocessor ARM is bi-directionally connected;
The COM port of described microprocessor ARM connects the respective input of described first gsm module; Described first gsm module and described second gsm module are by GSM network wireless connections; The respective input of server described in the output termination of described second gsm module;
The GPIO port of described microprocessor ARM meets the swing arm J-4 of described relay J; The normally closed contact J-3 ground connection of described relay J; The stationary contact J-2 of described relay J connects+3.3V direct supply; The coil J-1 of described relay J is connected on the two ends of+12V direct supply after connecting with the auxiliary contact K of on-load voltage regulating switch;
The input end of described display and storer connects the corresponding output end of described microprocessor ARM respectively.
2. on-load voltage regulating switch vibration signal on-Line Monitor Device according to claim 1, is characterized in that: the model of described acceleration transducer is ADXL345; The model of described signal adapter is LC0208; The model of described charge amplifier is DHF-10; The model of described A/D modular converter is AD5780; The model of described microprocessor ARM is SamsungS3C2440; Described first gsm module is Samsung GT-Y3400; Described second gsm module is Samsung GT-Y3400; Described server is Dell PowerEdge 29; Described display is upright FG769-VC; The model of described storer is M25P128-VMF6TP.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520288392.6U CN204740065U (en) | 2015-05-07 | 2015-05-07 | On -load voltage regulating switch vibration signal on -line monitoring device |
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| CN201520288392.6U CN204740065U (en) | 2015-05-07 | 2015-05-07 | On -load voltage regulating switch vibration signal on -line monitoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897267A (en) * | 2015-05-07 | 2015-09-09 | 国家电网公司 | On-line monitoring device for vibration signals of on-load tap changer |
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- 2015-05-07 CN CN201520288392.6U patent/CN204740065U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897267A (en) * | 2015-05-07 | 2015-09-09 | 国家电网公司 | On-line monitoring device for vibration signals of on-load tap changer |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151104 |