CN107807266A - Leakage current of an arrester remote online monitoring system - Google Patents
Leakage current of an arrester remote online monitoring system Download PDFInfo
- Publication number
- CN107807266A CN107807266A CN201711048127.0A CN201711048127A CN107807266A CN 107807266 A CN107807266 A CN 107807266A CN 201711048127 A CN201711048127 A CN 201711048127A CN 107807266 A CN107807266 A CN 107807266A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 35
- 238000012545 processing Methods 0.000 claims abstract description 26
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 239000004065 semiconductor Substances 0.000 claims description 18
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 14
- 229910052710 silicon Inorganic materials 0.000 claims description 14
- 239000010703 silicon Substances 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 7
- 239000003381 stabilizer Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/20—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices
- G01R15/202—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices using Hall-effect devices
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
A kind of leakage current of an arrester remote online monitoring system provided by the invention, including the Hall sensor for monitoring leakage current of an arrester, the I V change-over circuits being connected with the output end of Hall sensor, with the I V change-over circuit output ends it is connected analog to digital conversion circuit and the central processing circuit being connected with analog-digital conversion circuit as described output end；The central processing circuit is communicated to connect by wireless transport module and Surveillance center；The leakage current of arrester can monitor in real time and Monitoring Data is fed back into Surveillance center in real time, guarantee to find the failure of arrester in time and make treatment measures promptly and accurately, and, the input of manpower can effectively be reduced, Monitoring Data mistake caused by avoiding human factor, it is ensured that accuracy, the objectivity of data；And system can continually and steadily be run.
Description
Technical field
The present invention relates to a kind of monitoring system, more particularly to a kind of leakage current of an arrester remote online monitoring system.
Background technology
Arrester is equipment particularly important in transformer substation system, and the leakage current of arrester is reflection arrester performance state
Important parameter, in the prior art, monitored for the leakage current of arrester by the way of manual record, operation maintenance personnel is patrolled every time
Depending on that will record on-line computing model (discharge counter) action frequency and leakage current values during transformer station one by one, workload is big, appoints
It is engaged in heavy.With being continuously increased for transformer station's quantity, traditional manual record mode drawback is more obvious, first, by human factor
Influence greatly, because inadequate, carelessness of tour personnel's sense of responsibility etc. causes incorrect posting, error of omission；Two be due to expend the plenty of time
On manual record, cause the operation maintenance personnel equipment-patrolling time to shorten, influence to make an inspection tour quality；Transported third, can not realize for arrester
The real-time monitoring of row situation, it is impossible to find and handle in time the failure of arrester.
It is, therefore, desirable to provide a kind of new monitoring system, to the leakage current of arrester can monitor in real time and real
When Monitoring Data is fed back into Surveillance center, it is ensured that the failure of arrester can be found in time and make processing promptly and accurately
Measure, further, it is possible to effectively reduce the input of manpower, Monitoring Data mistake caused by avoiding human factor, it is ensured that the standard of data
True property, objectivity；And system can continually and steadily be run.
The content of the invention
In view of this, can be right it is an object of the invention to provide a kind of leakage current of an arrester remote online monitoring system
The leakage current of arrester monitor in real time and Monitoring Data is fed back into Surveillance center in real time, it is ensured that can find in time
The failure of arrester simultaneously makes treatment measures promptly and accurately, further, it is possible to effectively reduce the input of manpower, avoids human factor
Caused by Monitoring Data mistake, it is ensured that accuracy, the objectivity of data；And system can continually and steadily be run.
A kind of leakage current of an arrester remote online monitoring system provided by the invention, including for monitoring arrester leakage
The Hall sensor of electric current, the I-V change-over circuits being connected with the output end of Hall sensor and the I-V change-over circuits export
End connection analog to digital conversion circuit and the central processing circuit being connected with analog-digital conversion circuit as described output end；The central processing
Circuit is communicated to connect by wireless transport module and Surveillance center.
Further, the I-V change-over circuits include diode D1, resistance R1, resistance R2, controllable silicon SCR 1, metal-oxide-semiconductor Q1,
Resistance R3 and amplifier U1；
The drain electrode of the triode Q1 connects as the input of I-V change-over circuits and the output end of Hall sensor, institute
The source electrode for stating metal-oxide-semiconductor Q1 is connected to amplifier U1 end of oppisite phase, amplifier U1 in-phase end ground connection, the drain electrode of metal-oxide-semiconductor by resistance R1
It is connected with diode D1 negative pole, diode D1 positive pole is grounded by resistance R1, and resistance R2 one end and voltage-stabiliser tube D1 are just
Pole is connected, and the other end be connected with the control pole of controllable silicon SCR 1, and the negative pole of controllable silicon SCR 1 is grounded, the positive pole of controllable silicon SCR 1 and
Metal-oxide-semiconductor Q1 grid connection, metal-oxide-semiconductor Q1 grid are connected with resistance R5 one end, resistance R5 another termination power VCC, institute
The both ends for stating resistance R4 are connected between amplifier U1 end of oppisite phase and output end, and the output end of the amplifier U1 is as I-V
The output end of change-over circuit；Wherein, diode D1 is Schottky diode, and resistance R1 is piezo-resistance.
Further, in addition to power subsystem, the power subsystem include taking energy current transformer, take energy electric current mutual with described
The rectification circuit of sensor secondary side connection, be connected with rectification circuit output end the first power supply chip and with the first power supply core
Piece output end connects second source chip；First power supply chip export 5V voltages VCC and to central processing circuit, wireless pass
Defeated module and the power supply of I-V change-over circuits, second source chip output 12V voltages are simultaneously powered to amplifier U1.
Further, first power supply chip is LM2596 chips.
Further, the second source chip is MC34063 chips.
Further, in addition to address setting circuit, the address setting circuit are connected with central processing circuit.
Further, the I-V change-over circuits also include reset circuit, and the reset circuit includes triode Q2 and resistance
R6, the colelctor electrode of the triode Q2 are connected between resistance R5 and power supply VCC, triode Q2 grounded emitter, triode
Q2 base stage is connected by resistance R6 with central processing circuit.
Further, the central processing circuit is single-chip microcomputer.
Further, the rectification circuit is whole bridge rectifier circuit.
Beneficial effects of the present invention：By means of the invention it is possible to monitoring in real time and real-time is carried out to the leakage current of arrester
Monitoring Data is fed back to Surveillance center by ground, it is ensured that can find the failure of arrester in time and the processing made promptly and accurately is arranged
Apply, further, it is possible to effectively reduce manpower input, Monitoring Data mistake caused by avoiding human factor, it is ensured that data it is accurate
Property, objectivity；And system can continually and steadily be run.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples：
Fig. 1 is the theory diagram of the present invention.
Fig. 2 is the I-V change-over circuit figures of the present invention.
Fig. 3 is the power subsystem schematic diagram of the present invention.
Embodiment
Further description is made to the present invention below in conjunction with Figure of description：
A kind of leakage current of an arrester remote online monitoring system provided by the invention, including for monitoring arrester leakage
The Hall sensor of electric current, the I-V change-over circuits being connected with the output end of Hall sensor and the I-V change-over circuits export
End connection analog to digital conversion circuit and the central processing circuit being connected with analog-digital conversion circuit as described output end；The central processing
Circuit is communicated to connect by wireless transport module and Surveillance center；Wherein, central processing circuit uses existing single-chip microcomputer, such as
STM32 series monolithics, AVR single chip etc., Surveillance center include server, audible-visual annunciator, display and operation keyboard
Etc. equipment, audible-visual annunciator, display and operation keyboard are connected with server, for receiving detection data and carrying out corresponding
Display, for out-of-limit leakage current data, alarmed accordingly, and by display by the ginseng of whole monitoring process
Number is shown, by said structure, monitoring in real time can be carried out to the leakage current of arrester and in real time by Monitoring Data
Feed back to Surveillance center, it is ensured that the failure of arrester can be found in time and makes treatment measures promptly and accurately, further, it is possible to
Effectively reduce the input of manpower, Monitoring Data mistake caused by avoiding human factor, it is ensured that accuracy, the objectivity of data；And
And system can continually and steadily be run.
In the present embodiment, the I-V change-over circuits include diode D1, resistance R1, resistance R2, controllable silicon SCR 1, metal-oxide-semiconductor
Q1, resistance R3 and amplifier U1；
The drain electrode of the triode Q1 connects as the input of I-V change-over circuits and the output end of Hall sensor, institute
The source electrode for stating metal-oxide-semiconductor Q1 is connected to amplifier U1 end of oppisite phase, amplifier U1 in-phase end ground connection, the drain electrode of metal-oxide-semiconductor by resistance R1
It is connected with diode D1 negative pole, diode D1 positive pole is grounded by resistance R1, and resistance R2 one end and voltage-stabiliser tube D1 are just
Pole is connected, and the other end be connected with the control pole of controllable silicon SCR 1, and the negative pole of controllable silicon SCR 1 is grounded, the positive pole of controllable silicon SCR 1 and
Metal-oxide-semiconductor Q1 grid connection, metal-oxide-semiconductor Q1 grid are connected with resistance R5 one end, resistance R5 another termination power VCC, institute
The both ends for stating resistance R4 are connected between amplifier U1 end of oppisite phase and output end, and the output end of the amplifier U1 is as I-V
The output end of change-over circuit；Wherein, diode D1 is Schottky diode, and resistance R1 is piezo-resistance；
The I-V change-over circuits also include reset circuit, and the reset circuit includes triode Q2 and resistance R6, and described three
Pole pipe Q2 colelctor electrode is connected between resistance R5 and power supply VCC, and triode Q2 grounded emitter, triode Q2 base stage is led to
Resistance R6 is crossed to be connected with central processing circuit；Wherein, I-V change-over circuits are used for the current signal of Hall sensor output and turned
Change voltage signal into and be input in analog to digital conversion circuit, carry out further digital-to-analogue conversion, when metal-oxide-semiconductor Q1 drain electrode inputs electricity
Height is pressed through, diode D1 is breakdown, and imports the earth by resistance R1, and resistance R1 uses piezo-resistance, by voltage clamp
In a setting value, and controllable silicon SCR 1 is controlled to turn on, now metal-oxide-semiconductor Q1 dead electricity, metal-oxide-semiconductor cut-off, so as to follow-up circuit shape
, then can be by remotely being resetted when needing to reset into good protection, the service by control centre of control centre
Device sends control command to central processing circuit, and central processing circuit control triode Q2 is turned in setting time, such as 0.5s
Conducting so that the positive pole dead electricity of controllable silicon SCR 1, then end again triode Q2, now, metal-oxide-semiconductor Q1 grid is obtained electric and led
Logical, the signal of Hall sensor output can continue to transmit backward.
In the present embodiment, in addition to power subsystem, the power subsystem include taking energy current transformer, take energy electricity with described
The rectification circuit of current transformer secondary side connection, be connected with rectification circuit output end the first power supply chip and with it is described first electric
Source chip output end connects second source chip；First power supply chip exports 5V voltages VCC and to central processing circuit, nothing
Line transport module and the power supply of I-V change-over circuits, second source chip output 12V voltages are simultaneously powered to amplifier U1, and described first
Power supply chip is LM2596 chips, and the second source chip is MC34063 chips, wherein, current transformer is arranged at transmission of electricity
On circuit, sensing power taking is realized, so as to effectively avoid using traditional battery mode, whole system can be enable to grow
Operation long, and avoid the use of battery and pollute environment, environmental-protection function is played, wherein, second source chip is in the accompanying drawings
Do not draw, those skilled in the art are easy to buying by market and obtained, and are not repeated here.
In the present embodiment, in addition to address setting circuit, the address setting circuit are connected with central processing circuit, address
Initialization circuit uses existing toggle switch, for carrying out the setting of relevant position, central processing circuit to central processing circuit
When uploading Monitoring Data, while send positional information, the positional information show arrester be what equipment or where
Arrester so that staff can in time to scene carry out O＆M maintenance.
In the present embodiment, wireless transport module uses existing communication module, such as GPRS module, 4G modules etc., this hair
It is bright preferential issuing for data upload and order to be carried out using 4G modules.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent substitution, and without departing from the objective and scope of technical solution of the present invention, it all should cover at this
Among the right of invention.
Claims (9)
- A kind of 1. leakage current of an arrester remote online monitoring system, it is characterised in that：Including for monitoring arrester leakage electricity The Hall sensor of stream, the I-V change-over circuits being connected with the output end of Hall sensor and the I-V change-over circuits output end Connection analog to digital conversion circuit and the central processing circuit being connected with analog-digital conversion circuit as described output end；The central processing electricity Road is communicated to connect by wireless transport module and Surveillance center.
- 2. leakage current of an arrester remote online monitoring system according to claim 1, it is characterised in that：The I-V conversions Circuit includes diode D1, resistance R1, resistance R2, controllable silicon SCR 1, metal-oxide-semiconductor Q1, resistance R3 and amplifier U1；The drain electrode of the triode Q1 connects as the input of I-V change-over circuits and the output end of Hall sensor, the MOS Pipe Q1 source electrode is connected to amplifier U1 end of oppisite phase, amplifier U1 in-phase end ground connection, the drain electrode of metal-oxide-semiconductor and two poles by resistance R1 Pipe D1 negative pole connection, diode D1 positive pole are grounded by resistance R1, and resistance R2 one end is connected with voltage-stabiliser tube D1 positive pole, The other end is connected with the control pole of controllable silicon SCR 1, the negative pole ground connection of controllable silicon SCR 1, positive pole and the metal-oxide-semiconductor Q1 of controllable silicon SCR 1 Grid connection, metal-oxide-semiconductor Q1 grid is connected with resistance R5 one end, resistance R5 another termination power VCC, the resistance R4 Both ends be connected between amplifier U1 end of oppisite phase and output end, the output end of the amplifier U1 is as I-V change-over circuits Output end；Wherein, diode D1 is Schottky diode, and resistance R1 is piezo-resistance.
- 3. leakage current of an arrester remote online monitoring system according to claim 2, it is characterised in that：Also include power supply list Member, the power subsystem include taking can current transformer, with it is described take can the rectification circuit that is connected of Current Transformer Secondary side and Rectification circuit output end connects the first power supply chip and is connected second source chip with the first power supply chip output end；Institute State the first power supply chip output 5V voltages VCC and powered to central processing circuit, wireless transport module and I-V change-over circuits, Second source chip exports 12V voltages and powered to amplifier U1.
- 4. leakage current of an arrester remote online monitoring system according to claim 3, it is characterised in that：First power supply Chip is LM2596 chips.
- 5. leakage current of an arrester remote online monitoring system according to claim 3, it is characterised in that：The second source Chip is MC34063 chips.
- 6. leakage current of an arrester remote online monitoring system according to claim 1, it is characterised in that：Also set including address Determine circuit, the address setting circuit is connected with central processing circuit.
- 7. leakage current of an arrester remote online detecting system according to claim 2, it is characterised in that：The I-V conversions Circuit also includes reset circuit, and the reset circuit includes triode Q2 and resistance R6, the triode Q2 colelctor electrode connection Between resistance R5 and power supply VCC, triode Q2 grounded emitter, triode Q2 base stage passes through resistance R6 and central processing Circuit connects.
- 8. leakage current of an arrester remote online monitoring system according to claim 1, it is characterised in that：The central processing Circuit is single-chip microcomputer.
- 9. leakage current of an arrester remote online detecting system according to claim 3, it is characterised in that：The rectification circuit For whole bridge rectifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711048127.0A CN107807266A (en) | 2017-10-31 | 2017-10-31 | Leakage current of an arrester remote online monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711048127.0A CN107807266A (en) | 2017-10-31 | 2017-10-31 | Leakage current of an arrester remote online monitoring system |
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| CN107807266A true CN107807266A (en) | 2018-03-16 |
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| CN201711048127.0A Pending CN107807266A (en) | 2017-10-31 | 2017-10-31 | Leakage current of an arrester remote online monitoring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109120163A (en) * | 2018-09-20 | 2019-01-01 | 重庆镭云光电科技有限公司 | Safety-type bistable pressure type socket DC power supply |
| CN111551818A (en) * | 2020-04-14 | 2020-08-18 | 国家电网有限公司 | Automatic electric leakage monitoring and alarming system and equipment for bow net feed |
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| CN1811477A (en) * | 2006-02-15 | 2006-08-02 | 上海涌能电力科技发展有限公司 | Lightning arrester leakage current and action frequency real-time monitoring system |
| CN102103162A (en) * | 2009-12-22 | 2011-06-22 | 江苏省电力公司宝应县供电公司 | System for remotely monitoring leakage current of lightning arrester on line |
| CN201984103U (en) * | 2010-11-23 | 2011-09-21 | 广州长川科技有限公司 | Lightning arrester current leakage on-line detection device |
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2017
- 2017-10-31 CN CN201711048127.0A patent/CN107807266A/en active Pending
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|---|---|---|---|---|
| US6242922B1 (en) * | 1998-11-06 | 2001-06-05 | General Electric Company | Arc detection architecture based on correlation for circuit breakers |
| CN1811477A (en) * | 2006-02-15 | 2006-08-02 | 上海涌能电力科技发展有限公司 | Lightning arrester leakage current and action frequency real-time monitoring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111551818A (en) * | 2020-04-14 | 2020-08-18 | 国家电网有限公司 | Automatic electric leakage monitoring and alarming system and equipment for bow net feed |
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Application publication date: 20180316 |