CN105823949A - Lightning arrester online monitor - Google Patents
Lightning arrester online monitor Download PDFInfo
- Publication number
- CN105823949A CN105823949A CN201610331795.3A CN201610331795A CN105823949A CN 105823949 A CN105823949 A CN 105823949A CN 201610331795 A CN201610331795 A CN 201610331795A CN 105823949 A CN105823949 A CN 105823949A
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- CN
- China
- Prior art keywords
- spark gap
- voltage sensor
- signal input
- current sensor
- microprocessor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
-
- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1236—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of surge arresters
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention relates to the technical field of lightning arrester monitoring, and provides a lightning arrester online monitor. The lightning arrester online monitor comprises a sampling coil, a voltage sensor, a current sensor, an ADC, and a microprocessor. One end of the sampling coil is electrically connected with a first low-voltage end of a lightning arrester, and the other end of the sampling coil is electrically connected with the signal input end of the current sensor. The signal input end of the voltage sensor is electrically connected with a second low-voltage end of the lightning arrester. Two input ports of the ADC are respectively and electrically connected with the output end of the current sensor and one output end of the voltage sensor. The other output end of the voltage sensor is electrically connected with a grounding wire. The output end of the ADC is electrically connected with the input end of the microprocessor. The data output end of the microprocessor is connected with a communication module. The output end of the communication module is electrically connected with a display. Through lightning arrester online monitoring and intelligent diagnosis, there is no need for the staff to regularly go to the site for inspection and maintenance, the occurrence of accidents is avoided, and an unattended substation is realized.
Description
Technical field
The present invention relates to spark gap monitoring technical field, be a kind of spark gap on-line computing model.
Background technology
The equipment of present domestic a lot of transformer stations is increasing, and personnel are in short supply, task is heavy, and personnel take time and effort at tour altitude chamber arrester discharge counter, and there is potential safety hazard, may threaten the safe operation of electrical network time serious.Now the anxious one that lacks can improve equipment O&M service work efficiency and ensures data accuracy, eliminates personal security hidden danger, shortens the tour time, can monitor the leakage current of spark gap in real time, the spark gap on-line computing model of statistics number of lightning strokes.
Summary of the invention
The invention provides a kind of spark gap on-line computing model, overcoming the deficiency of above-mentioned prior art, it can effectively solve staff's problem that staff takes time and effort when reading the number of lightning strokes that arrester discharge counter shows and can not grasp the problem that lightning arrester leakance situation exists potential safety hazard in real time.
The technical scheme is that and realized by following measures: a kind of spark gap on-line computing model, including sampling coil, voltage sensor, current sensor, ADC and microprocessor, one end of sampling coil electrically connects with the first low-pressure end of spark gap, the other end of sampling coil electrically connects with the signal input part of current sensor, the signal input part of voltage sensor electrically connects with the second low-pressure end of spark gap, two input ports of ADC respectively with the outfan of current sensor, the outfan electrical connection of voltage sensor, another outfan of voltage sensor electrically connects with earth lead, the outfan of ADC electrically connects with the input of microprocessor, the data output end of microprocessor connects communication module, the outfan of communication module electrically connects with display.Further optimization and/or improvements to foregoing invention technical scheme are presented herein below:
Above-mentioned microprocessor can be MCU single-chip microcomputer.
One output port of above-mentioned microprocessor can be electrically connected with alarm.
Above-mentioned current sensor can be three, and voltage sensor can be three.
The signal input part of above-mentioned current sensor and voltage sensor can be all three-phase signal input.
Aforementioned display device can be panel type display.
The present invention is by the on-line monitoring of spark gap and intelligent diagnostics, it is not necessary to staff periodically arrives view of the scene maintenance, it is to avoid the generation of accident, it is achieved the unmanned of transformer station.This spark gap on-line computing model can not only realize timely early warning, it is ensured that is avoided thunderbolt injury by protection equipment, and extends the time between overhauls(TBO), reduces interruption maintenance number of times, effectively save the repair time.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of preferred embodiment.
Detailed description of the invention
The present invention is not limited by following embodiment, can determine specific embodiment according to technical scheme and practical situation.
In the present invention, for the ease of describing, the description of the relative position relation of each parts is all that the Butut mode according to Figure of description 1 is described, such as: the position relationship of upper and lower, left and right etc. is based on the Butut direction of Figure of description 1 and determines.
Below in conjunction with embodiment and accompanying drawing, the invention will be further described:
As shown in Figure 1, this spark gap on-line computing model includes sampling coil, voltage sensor, current sensor, ADC and microprocessor, one end of sampling coil electrically connects with the first low-pressure end of spark gap, the other end of sampling coil electrically connects with the signal input part of current sensor, the signal input part of voltage sensor electrically connects with the second low-pressure end of spark gap, two input ports of ADC respectively with the outfan of current sensor, the outfan electrical connection of voltage sensor, another outfan of voltage sensor electrically connects with earth lead, the outfan of ADC electrically connects with the input of microprocessor, the data output end of microprocessor connects communication module, the outfan of communication module electrically connects with display.ADC is existing known technology, can be the analog-digital converter of the models such as AD7984.The data way of output of microprocessor can be transmitted to display by the way of RS485 transmission to display or employing radio communication.During real work, at least a current sensor electrically connects with sampling coil, and at least a voltage sensor electrically connects with the second low-pressure end of spark gap.This spark gap on-line computing model can monitor the total current of the Zinc-Oxide Arrester under running status, 3 subharmonic currents and current in resistance property, counting thunder in real time.Can be widely applied to 10KV-35KV Zinc-Oxide Arrester on-line monitoring, it is achieved the unmanned of transformer station.
According to actual needs above-mentioned spark gap on-line computing model can be made further optimization and/or improvements:
As shown in Figure 1, described microprocessor is MCU single-chip microcomputer.During use, the accessory power supply of the external AC/DC110-220V of MCU single-chip microcomputer is as power access end；It addition, be additionally provided with backup battery, during without accessory power supply stand-by operation, this spark gap on-line computing model only maintains counting thunder and display function.
As shown in Figure 1, an output port of microprocessor is electrically connected with alarm.
As shown in Figure 1, described current sensor is three, and voltage sensor is three.
As shown in Figure 1, the signal input part of current sensor and voltage sensor is three-phase signal input.
As shown in Figure 1, described display is panel type display.Panel type display numerical monitor is used clearly to be easy to the reading of data.
Above technical characteristic constitutes highly preferred embodiment of the present invention, and it has stronger adaptability and optimal implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.
The use process of preferred embodiment: first, the three-phase current sensor input of the present invention and the input of three-phase voltage sensor are respectively connected to the low-pressure end of spark gap body, current sensor senses the pulse signal of the lightning discharge of spark gap, carry out counting thunder and logout, secondly, current sensor and voltage sensor feedback faint current signal and voltage sample analogue signal, after amplified ADC process is transformed into digital signal, the total current obtaining this spark gap is inputted by the data I/O port of MCU single-chip microcomputer, 3 subharmonic currents and current in resistance property；Finally, the data obtained are carried out processing and store realization and lightning arrester leakance unify monitoring by MCU single-chip microcomputer, when the present invention monitor spark gap break down time, alarm ring, prompting staff's spark gap breaks down, and need to change in time；Communication module can send data to control centre, thus realizes the unmanned of transformer station.
Claims (9)
1. a spark gap on-line computing model, it is characterized in that including sampling coil, voltage sensor, current sensor, ADC and microprocessor, one end of sampling coil electrically connects with the first low-pressure end of spark gap, the other end of sampling coil electrically connects with the signal input part of current sensor, the signal input part of voltage sensor electrically connects with the second low-pressure end of spark gap, two input ports of ADC respectively with the outfan of current sensor, the outfan electrical connection of voltage sensor, another outfan of voltage sensor electrically connects with earth lead, the outfan of ADC electrically connects with the input of microprocessor, the data output end of microprocessor connects communication module, the outfan of communication module electrically connects with display.
Spark gap on-line computing model the most according to claim 1, it is characterised in that described microprocessor is MCU single-chip microcomputer.
Spark gap on-line computing model the most according to claim 1 and 2 a, it is characterised in that output port of microprocessor is electrically connected with alarm.
Spark gap on-line computing model the most according to claim 1 and 2, it is characterised in that described current sensor is three, voltage sensor is three.
Spark gap on-line computing model the most according to claim 3, it is characterised in that described current sensor is three, voltage sensor is three.
Spark gap on-line computing model the most according to claim 1 and 2, it is characterised in that the signal input part of current sensor and voltage sensor is three-phase signal input, or/and, described display is panel type display.
Spark gap on-line computing model the most according to claim 3, it is characterised in that the signal input part of current sensor and voltage sensor is three-phase signal input, or/and, described display is panel type display.
Spark gap on-line computing model the most according to claim 4, it is characterised in that the signal input part of current sensor and voltage sensor is three-phase signal input, or/and, described display is panel type display.
Spark gap on-line computing model the most according to claim 5, it is characterised in that the signal input part of current sensor and voltage sensor is three-phase signal input, or/and, described display is panel type display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610331795.3A CN105823949A (en) | 2016-05-18 | 2016-05-18 | Lightning arrester online monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610331795.3A CN105823949A (en) | 2016-05-18 | 2016-05-18 | Lightning arrester online monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105823949A true CN105823949A (en) | 2016-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610331795.3A Pending CN105823949A (en) | 2016-05-18 | 2016-05-18 | Lightning arrester online monitor |
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| CN (1) | CN105823949A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107656150A (en) * | 2017-08-08 | 2018-02-02 | 芜湖市凯鑫避雷器有限责任公司 | A kind of on-line measuring device of electric ceramic lightning arrester |
| CN107677880A (en) * | 2017-11-22 | 2018-02-09 | 国网四川省电力公司电力科学研究院 | A kind of overvoltage intelligent identifying system based on the monitoring of leakage conductor tail current |
| CN108710023A (en) * | 2018-07-26 | 2018-10-26 | 云南电网有限责任公司曲靖供电局 | Current sensor and lightning arrester monitoring device |
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| CN101403777A (en) * | 2008-11-05 | 2009-04-08 | 四川电力试验研究院 | Resistive current tester for great current zinc oxide lightning arrester |
| CN101581748A (en) * | 2009-06-24 | 2009-11-18 | 西安工程大学 | Zinc oxide arrester on-line monitoring system |
| CN103048533A (en) * | 2011-10-14 | 2013-04-17 | 四川蓝讯宝迩电子科技有限公司 | Switch cabinet online monitor easy in information acquisition |
| CN203084097U (en) * | 2012-12-17 | 2013-07-24 | 北京光耀电力自动化有限公司 | On-line zinc oxide lightning arrester state monitoring device |
| CN204142842U (en) * | 2013-12-31 | 2015-02-04 | 南京麟派电力工程有限公司 | Lightning arrester on-Line Monitor Device |
| CN205958658U (en) * | 2016-05-18 | 2017-02-15 | 国网新疆电力公司巴州供电公司 | Arrester on -line monitor |
-
2016
- 2016-05-18 CN CN201610331795.3A patent/CN105823949A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101403777A (en) * | 2008-11-05 | 2009-04-08 | 四川电力试验研究院 | Resistive current tester for great current zinc oxide lightning arrester |
| CN101581748A (en) * | 2009-06-24 | 2009-11-18 | 西安工程大学 | Zinc oxide arrester on-line monitoring system |
| CN103048533A (en) * | 2011-10-14 | 2013-04-17 | 四川蓝讯宝迩电子科技有限公司 | Switch cabinet online monitor easy in information acquisition |
| CN203084097U (en) * | 2012-12-17 | 2013-07-24 | 北京光耀电力自动化有限公司 | On-line zinc oxide lightning arrester state monitoring device |
| CN204142842U (en) * | 2013-12-31 | 2015-02-04 | 南京麟派电力工程有限公司 | Lightning arrester on-Line Monitor Device |
| CN205958658U (en) * | 2016-05-18 | 2017-02-15 | 国网新疆电力公司巴州供电公司 | Arrester on -line monitor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107656150A (en) * | 2017-08-08 | 2018-02-02 | 芜湖市凯鑫避雷器有限责任公司 | A kind of on-line measuring device of electric ceramic lightning arrester |
| CN107677880A (en) * | 2017-11-22 | 2018-02-09 | 国网四川省电力公司电力科学研究院 | A kind of overvoltage intelligent identifying system based on the monitoring of leakage conductor tail current |
| CN108710023A (en) * | 2018-07-26 | 2018-10-26 | 云南电网有限责任公司曲靖供电局 | Current sensor and lightning arrester monitoring device |
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Application publication date: 20160803 |
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