CN203310923U - Bushing dielectric loss measuring instrument - Google Patents
Bushing dielectric loss measuring instrument Download PDFInfo
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- CN203310923U CN203310923U CN2013204258723U CN201320425872U CN203310923U CN 203310923 U CN203310923 U CN 203310923U CN 2013204258723 U CN2013204258723 U CN 2013204258723U CN 201320425872 U CN201320425872 U CN 201320425872U CN 203310923 U CN203310923 U CN 203310923U
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- 238000012545 processing Methods 0.000 claims abstract description 24
- 230000001360 synchronised effect Effects 0.000 claims abstract description 22
- 238000005070 sampling Methods 0.000 claims abstract description 19
- 238000005259 measurement Methods 0.000 claims description 20
- 230000009977 dual effect Effects 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 abstract description 11
- 238000012423 maintenance Methods 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The utility model relates to a bushing dielectric loss measuring instrument. The bushing dielectric loss measuring instrument comprises a measuring sampling unit and a terminal analysis unit in signal connection with the measuring sampling unit, wherein the measuring sampling unit comprises a synchronous acquisition unit, a signal processing unit in signal connection with the synchronous acquisition unit, and a signal output unit in signal connection with the signal processing unit; and the signal output unit is provided with a first Bluetooth module, and the terminal analysis unit is provided with a second Bluetooth module in signal connection with the first Bluetooth module. The bushing dielectric loss measuring instrument has the beneficial effects that data acquisition and the Bluetooth technology are integrated, and dielectric loss values of each phase bushing of transformers at different places can be measured in time, effectively and accurately without power cut and with safety assurance; and bushing dielectric losses can be measured timely and accurately, thereby facilitating timely subsequent maintenance and defect elimination, possible end shield grounding accidents can be prevented, and power-on time can be largely extended.
Description
Technical field
The utility model relates to a kind of sleeve pipe dielectric loss measurement instrument.
Background technology
If bushing shell for transformer makes moist, can cause that the sleeve pipe insulating property are impaired, when serious, sleeve pipe is blasted, therefore, whether measuring transformer sleeve pipe dielectric loss is differentiated sleeve pipe and is made moist, and the normal operation of transformer is played to vital effect.Current measuring method is generally cycle maintenance power failure and measures, but along with the fast-developing of electrical network and to improving constantly that power supply reliability requires, traditional cycle maintenance model can not adapt to the power network development requirement, the electric system maintenance model is progressively from the cycle maintenance to the repair based on condition of component transition, and the target of repair based on condition of component is by strengthening detection and the supervision to online equipment state, the online detection adopted the clamp on amperemeter image data at present, the data acquisition weak effect, error is larger, causes reliability low.
Current on-line monitoring adopts the form of wire transmission more, time has just been grown and there will be transmission line fracture, a series of problem such as aging, affect the collection of data, measure inaccurate, can not accurately judge the sleeve pipe degree of making moist, easily form transformer end shield open circuit, produce suspended discharge, produce serious consequence.
Summary of the invention
The purpose of this utility model is to address the above problem and a kind of sleeve pipe dielectric loss measurement instrument is provided, integrate data acquisition and Bluetooth technology, can be in the situation that do not have a power failure, guarantee safe, in real time, measure effectively, accurately three-phase dielectric loss value, can promptly and accurately measure the sleeve pipe dielectric loss, facilitate follow-up maintenance job to carry out in time, avoid the end shield ground fault that may cause.
The technical scheme that the prior art problem that solves the utility model adopts is: sleeve pipe dielectric loss measurement instrument, it is characterized in that comprising the measurement sampling unit, with measure that the sampling unit signal is connected be provided with the terminal analysis unit, described measurement sampling unit comprises the synchronous acquisition unit, the signal processing unit be connected with the synchronous acquisition cell signal, the signal output unit be connected with the signal processing unit signal, in described signal output unit, be provided with the first bluetooth module, in described terminal analysis unit, be provided with the second bluetooth module be connected with the first bluetooth module signal.At present Wireless Data Transmission has far-infrared technique and GPRS technology, and the defect of these technology maximums be that transfer rate is on the low side, be disturbed large etc.
Bluetooth module is the 2.4GHz frequency range (ultrahigh frequency) that is operated in global general-use, avoided the interference of electromagnetic field in the transformer station, simultaneously Bluetooth quick confirmation and exhibition frequency modulation technology frequently, use this technology can at utmost avoid multiple devices to use simultaneously identical frequency to transmit, use this technology, every equipment all will be used 79 independent and random frequencies of selecting in specified scope, simultaneously from a frequency, change to another frequency regularly, and can not be subject to the interference of buildings in the process of transmission data, have powerful antijamming capability.Therefore, adopt Bluetooth technology, so that data transmission rate, the powerful advantages such as anti-interference solve the problem that prior art exists fast.The current average transmission rate of bluetooth module is 1Mb/s, and along with updating of technology, the transfer rate of bluetooth is also in continuous improve, and some can reach 2 Mb/s～3 Mb/s, and this is that other transmission modes are incomparable.In addition, bluetooth can not produce any communication fee in data transmission procedure, economy and practical.
Measure sampling unit and with three of sleeve pipe, be connected respectively, can gather simultaneously the bottom shielding of bushing dielectric loss data of each phase of transformer, carry out better alternate Data Comparison, by the comparison of electric capacity and dielectric loss, judge that more accurately which is out of order mutually.
As the further of technique scheme improved and supplement, the utility model adopts following technical measures: described measurement sampling unit is arranged in betal can, and described betal can is provided with earth terminal.
Described signal processing unit comprises locating module, the clock module be connected with the digital signal processing module signal and the dual port RAM module that the A/D converter be connected with the synchronous acquisition cell signal, the Logic control module be connected with the A/D converter signal are connected with digital signal processing module, andlogic control module and digital signal processing module signal, described signal output unit comprises the single-chip microcomputer be connected with the dual port RAM module by signal, and described bluetooth module is arranged in single-chip microcomputer.Double-core RAM module can be processed large batch of data simultaneously, without time delay, guarantees the quick, accurate of data acquisition.
Described locating module is the GRS module.Adopt the GPS module as synchronous clock, guarantee the synchronous acquisition of data, be conducive to the real-time monitoring of terminal analysis unit, find data exception sooner, more accurately, fix a breakdown in time, for electrical network continues, stable power supply provides safeguard.
Described synchronous acquisition unit comprise transducer, the low-pass filter be connected with transducer signal, the programmable amplifier be connected with the low-pass filter signal, the active filter be connected with the programmable amplifier signal, with the level displacement circuit that the active filter signal is connected, described level displacement circuit is connected with the A/D converter signal.
Described digital signal processing module also is electrically connected to power module, is connected with reset-circuit signal, is connected with the jtag interface signal.
Described terminal analysis unit is arranged on terminal PC.
The beneficial effect the utlity model has: integrate data acquisition and Bluetooth technology, can be in the situation that do not have a power failure, guarantee safe, measure effectively, accurately in real time, the dielectric loss value of each phase sleeve pipe of the transformer of different location, can promptly and accurately measure the sleeve pipe dielectric loss, facilitate follow-up maintenance job to carry out in time, eliminate defect, avoid the end shield ground fault that may cause, also greatly improved not power off time.Adopt Bluetooth wireless transmission greatly to improve the staff in the safety coefficient of carrying out on-line measurement, ensure the safety of the person, equipment, electrical network.
The accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Embodiment:Sleeve pipe dielectric loss measurement instrument, as shown in Figure 1, it comprises the measurement sampling unit, with measure that the sampling unit signal is connected be provided with the terminal analysis unit.Measure sampling unit and be arranged in betal can 5, betal can 5 is provided with earth terminal, and terminal analysis unit 4 is arranged on terminal PC.
Measure sampling unit and comprise synchronous acquisition unit 1, the signal processing unit 2 be connected with synchronous acquisition unit 1 signal, the signal output unit 3 be connected with signal processing unit 2 signals.In signal output unit 3, be provided with the first bluetooth module 31.In terminal analysis unit 4, be provided with the second bluetooth module 41 be connected with the first bluetooth module 31 signals.
Signal processing unit 2 comprises location (GRS) module 24 that the A/D converter 21 be connected with synchronous acquisition unit 1 signal, the Logic control module 22 be connected with the A/D converter signal and digital signal processing module 23, andlogic control module 22 and digital signal processing module 23 signals are connected, clock module 25 and the dual port RAM module 26 be connected with digital signal processing module 24 signals, described signal output unit 3 comprises the single-chip microcomputer 32 be connected with dual port RAM module 26 signals, and described the first bluetooth module 31 is arranged in single-chip microcomputer 32.Digital signal processing module 2 also is electrically connected to power module 25, is connected with reset circuit 26 signals, is connected with jtag interface 27 signals.
Synchronous acquisition unit 1 comprises transducer 11, the low-pass filter 12 be connected with transducer signal, the programmable amplifier 13 be connected with low-pass filter 12 signals, the active filter 14 be connected with programmable amplifier 13 signals, with the level displacement circuit 15 that active filter 14 signals are connected, described level displacement circuit 15 is connected with A/D converter 21 signals.
During use, transducer 11 is connected with the three-phase (Divisional A phase end shield, B phase end shield, C phase end shield) of sleeve pipe.The data that measure transfer signals to the second bluetooth module 41 by the first bluetooth module 31 after measuring the sampling unit analysis, according to data, judge the sleeve pipe state by PC.Can gather simultaneously the bottom shielding of bushing dielectric loss data of each phase of transformer, carry out better alternate Data Comparison, by the comparison of electric capacity and dielectric loss, judge more accurately which phase fault.
Specifically, Logic control module (CPLD) is by the synchronous pulse per second (PPS) 1PPS of receive clock circuit generation and the control signal of digital signal processing module (DSP), and produce synchronous sampling signal through certain logical operation, control the synchronous acquisition unit of different location, A/D converter starts simultaneously sampling and keeps and analog to digital conversion, thereby has realized the strange land synchronous acquisition of ac electric.In addition, the work such as A/D converter external clock are controlled and produced to the CPLD read-write sequence of also being responsible for dual port RAM.
Adopt the GPS chip as synchronous clock, guarantee the synchronous acquisition of data, be conducive to the real-time of terminal PC, monitoring, faster, find more accurately data exception, main transformer is fixed a breakdown timely, for electrical network continues, stable power supply provides safeguard.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model.In the above-described embodiments, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
1. sleeve pipe dielectric loss measurement instrument, it is characterized in that comprising the measurement sampling unit, with measure that the sampling unit signal is connected be provided with the terminal analysis unit, described measurement sampling unit comprises synchronous acquisition unit (1), the signal processing unit (2) be connected with synchronous acquisition unit (1) signal, the signal output unit (3) be connected with signal processing unit (2) signal, in described signal output unit (3), be provided with the first bluetooth module (31), in described terminal analysis unit (4), be provided with the second bluetooth module (41) be connected with the first bluetooth module (31) signal.
2. sleeve pipe dielectric loss measurement instrument according to claim 1, is characterized in that described measurement sampling unit is arranged in betal can (5), and described betal can (5) is provided with earth terminal.
3. sleeve pipe dielectric loss measurement instrument according to claim 1 and 2, it is characterized in that described signal processing unit (2) comprises the A/D converter (21) be connected with synchronous acquisition unit (1) signal, the Logic control module (22) be connected with the A/D converter signal and digital signal processing module (23), the locating module (24) that andlogic control module (22) is connected with digital signal processing module (23) signal, the clock module (25) and the dual port RAM module (26) that with digital signal processing module (24) signal, are connected, described signal output unit (3) comprises the single-chip microcomputer (32) be connected with dual port RAM module (26) signal, described bluetooth module (31) is arranged in single-chip microcomputer (32).
4. sleeve pipe dielectric loss measurement instrument according to claim 3, is characterized in that described locating module (24) is the GRS module.
5. sleeve pipe dielectric loss measurement instrument according to claim 3, it is characterized in that the low-pass filter (12) that described synchronous acquisition unit (1) comprises transducer (11), is connected with transducer signal, the programmable amplifier (13) be connected with low-pass filter (12) signal, the active filter (14) be connected with programmable amplifier (13) signal, the level displacement circuit (15) be connected with active filter (14) signal, described level displacement circuit (15) is connected with A/D converter (21) signal.
6. sleeve pipe dielectric loss measurement instrument according to claim 5, is characterized in that described digital signal processing module (2) also is electrically connected to power module (25), is connected with reset circuit (26) signal, is connected with jtag interface (27) signal.
7. sleeve pipe dielectric loss measurement instrument according to claim 3, is characterized in that described terminal analysis unit (4) is arranged on terminal PC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204258723U CN203310923U (en) | 2013-07-17 | 2013-07-17 | Bushing dielectric loss measuring instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204258723U CN203310923U (en) | 2013-07-17 | 2013-07-17 | Bushing dielectric loss measuring instrument |
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| CN203310923U true CN203310923U (en) | 2013-11-27 |
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| CN2013204258723U Expired - Fee Related CN203310923U (en) | 2013-07-17 | 2013-07-17 | Bushing dielectric loss measuring instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353554A (en) * | 2013-07-17 | 2013-10-16 | 国家电网公司 | Casing pipe dielectric loss measuring instrument |
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2013
- 2013-07-17 CN CN2013204258723U patent/CN203310923U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353554A (en) * | 2013-07-17 | 2013-10-16 | 国家电网公司 | Casing pipe dielectric loss measuring instrument |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20200717 |