CN201673227U - Lightning arrestor operation monitor - Google Patents
Lightning arrestor operation monitor Download PDFInfo
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- CN201673227U CN201673227U CN2010202215202U CN201020221520U CN201673227U CN 201673227 U CN201673227 U CN 201673227U CN 2010202215202 U CN2010202215202 U CN 2010202215202U CN 201020221520 U CN201020221520 U CN 201020221520U CN 201673227 U CN201673227 U CN 201673227U
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- leakage current
- monitoring device
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Abstract
A lightning arrester operation monitor is composed of a signal sampling resistor RY namely low-voltage gapless metal-oxide lighting arrester chip, a rectification circuit, a wave filter circuit, a leakage current indicating circuit, a superleak indicating circuit, a high-current absorbing circuit, and an electromagnetic counter, wherein both ends of the signal sampling resistor RY is connected to the input terminal of the rectification circuit, the output terminal of the rectification circuit is connected to one end of the wave filter circuit and the electromagnetic counter coil JSQ, and the other end of the electromagnetic counter coil JSQ is connected to the leakage current indicating circuit, the superleak indicating circuit and the high-current absorbing circuit composed of non-linear components. The lightning arrester operation monitor is installed below the lightning arrestor, for monitoring the leakage current during operation of the lightning arrestor operation and recording the lightning arrestor discharging (action) number, so that the maintenance personnel can judge whether the lightning arrestor requires replacement based on the displayed leakage current.
Description
Technical field
The utility model relates to a kind of monitoring device for lightning arrester, especially a kind of lightning arrester electric leakage indication and lightning arrester operational monitoring device that discharges and count of being used for.
Background technology
Chinese patent once disclosed a kind of " lightning arrester on-line monitoring instrument " (China, notification number CN2228661Y, June 5 1996 day for announcing), the high magnetic conduction platinum film of the employing alloy material that is provided with two elementary series connection in columnar metal shell is the mutual-inductance element of iron core, the secondary testing circuit that is connected to of one of them mutual-inductance element, the secondary counting circuit that is connected to of another mutual-inductance element.Its will be struck by lightning record and detect leakage current and be integrated, volume is little, in light weight, detects the leakage current of lightning arrester milliampere level at ordinary times, during thunderbolt, can write down the thunderbolt number of times, be the good on-line monitoring equipment that guarantees electric power netting safe running, has good economic benefits and social benefit.It adopts two mutual-inductance elements.
Chinese patent once disclosed a kind of " lightning arrestor on-line monitoring methods and system thereof " (China, publication number CN101178838A, open day on May 14th, 2008), its on-line monitoring instrument is arranged at the lightning arrester place, and the sensor of on-line monitoring instrument is arranged at the earth terminal of lightning arrester.Sensor is handled on the sheet be delivered to the on-line monitoring instrument micro-system with the lightning arrester operation information and is discerned processing through line monitor signal, the lightning arrester operation information is sent in real time the real-time supervisory computer system of far-end by wireless transmission method, the PC of supervisory computer system is analyzed the lightning arrester operation information in real time, and analysis result is handled.Its monitoring efficient height, be particularly useful for quantity many, the lightning arrester on-line monitoring of dispersion, distance is installed, can effectively avoid the generation of accident.It adopts sensor.
Chinese patent once disclosed a kind of " monitor for three-section type lightning arrester " (China, publication No. CN101696988A, open day on April 21st, 2010), comprised a current monitoring device and three counting assemblys.Current monitoring device is made up of a holding circuit and a reometer; three counting assemblys are formed by sample resistance sheet, bridge rectifier circuit, energy-storage capacitor, counter coil, but the energy-storage capacitor sum counter coil model sample diversified in specifications of three counting assemblys.It can monitoring stream crosses the size of current of lightning arrester, 3 counting assemblys can show respectively under different wave and the energy superpotential flow through lightning arrester after, the action frequency of lightning arrester, thus better judge the ruuning situation of lightning arrester.It adopts three counting assemblys.
Summary of the invention
The purpose of this utility model is to provide a kind of lightning arrester operational monitoring device, it is contained in below the lightning arrester, leakage current when being used for monitoring the lightning arrester operation and record lightning arrester discharge (action) number of times, the maintainer can judge lightning arrester whether change by needs according to the size that shows leakage current.
For achieving the above object, the solution that the utility model is taked is: a kind of lightning arrester operational monitoring device, it is a low pressure gapless metal-oxide lighting arrester chip by sample of signal resistance R Y, rectification circuit, filtering circuit, the leakage current display circuit, the superleak indicating circuit, big current absorption circuit, message register is formed, the input end of the two termination rectification circuits of sample of signal resistance R Y, the output termination filtering circuit of rectification circuit, message register coil JSQ one end, another termination leakage current display circuit of message register coil JSQ, the superleak indicating circuit, the big current absorption circuit that constitutes by nonlinear element.
It is contained in (ground connection) end under the lightning arrester, the leakage current when being used for monitoring the lightning arrester operation and record lightning arrester discharge (action) number of times, and the maintainer can judge lightning arrester whether change by needs according to the size that shows leakage current.
Description of drawings
Fig. 1 is a lightning arrester operational monitoring device principle assumption diagram.
Embodiment
Below in conjunction with embodiment and accompanying drawing thereof the utility model is remake description.
Referring to Fig. 1, a kind of lightning arrester operational monitoring device, it is that low pressure gapless metal-oxide lighting arrester chip, rectification circuit, filtering circuit, leakage current display circuit, superleak indicating circuit, big current absorption circuit, message register are formed by sample of signal resistance R Y, the input end of the two termination rectification circuits of sample of signal resistance R Y, the output termination filtering circuit of rectification circuit, message register coil JSQ one end, another termination leakage current display circuit of message register coil JSQ, superleak indicating circuit, the big current absorption circuit that constitutes by nonlinear element.
Referring to Fig. 1, the described message register coil JSQ other end also is connected to filter capacitor C2, and filter capacitor C2 is before the leakage current display circuit.
Referring to Fig. 1, described filtering circuit is made of filter capacitor C1.
Referring to Fig. 1, described leakage current display circuit is made of current-limiting resistance R1 and electric current milliammeter A series connection.
Referring to Fig. 1, described superleak indicating circuit is made of current-limiting resistance R2 and outrange pilot lamp L1 series connection.
Referring to Fig. 1, described big current absorption circuit is made of diode D5, diode D6, diode D7, diode D8 series connection.
Referring to Fig. 1, described big current absorption circuit is made of stabilivolt.
Referring to Fig. 1, the principle of work of this lightning arrester operational monitoring device is as follows: when there is less leakage current in lightning arrester BLQ, can on sample of signal resistance R Y, produce more weak electric signal relatively, after rectification circuit D1～D4 rectification, filter capacitor C1 filtering, flow into current-limiting resistance R1, electric current milliammeter A through message register coil JSQ, electric current milliammeter A shows the size of its leakage current.Because superleak indicating circuit and big current absorption circuit thresholding are higher, more weak relatively electric signal is not by this two loop.If lightning arrester BLQ leakage current is bigger, electric signal on the sample of signal resistance R Y also can increase, when increasing near electric current milliammeter A full scale, pressure drop on the current-limiting resistance R1 increases, marking current will flow through current-limiting resistance R2, and outrange pilot lamp L1 (superleak alarm lamp) lights, at this moment, this marking current does not surpass big current absorption circuit thresholding, therefore not by big current absorption loop.The effect of superleak indicating circuit is: (1) indication lightning arrester BLQ is existing bigger or surpass the leakage current that allows, and (2) have certain clamping action, the electric current of partial current milliammeter A, and protective current milliammeter A avoids overload.When if the signal on the sample of signal resistance R Y continues to increase (mean more serious leakage current or the big electric current that is struck by lightning by sample of signal resistance R Y) again, pressure drop on current-limiting resistance R1, the current-limiting resistance R2 continues to increase, marking current will be by big current absorption circuit (diode D6, diode D7, diode D8 connect formation, also available stabilivolt).The effect of big current absorption circuit is: (1) protection leakage current display circuit (milliammeter loop) and superleak indicating circuit (LED superleak indication loop); (2) with leakage current display circuit (electric current show circuit) and superleak indicating circuit (LED indicates the loop) (three road electric currents) superposition on message register, make the message register action, change former display digit.Because big current absorption circuit is a nonlinear element, has good clamping action, can effectively protect leakage current display circuit and superleak indicating circuit (reometer and pilot lamp loop).Here so-called big electric current is the electric current of relative reometer and LED light, and the existing tally function of message register also is the current-limiting resistance of three road electric currents simultaneously, and big electric current is a milliampere level only.Filter capacitor C2 plays the effect that reduces impedance, improves frequency response and further filtering.
The characteristics of this lightning arrestor operation monitor are: sample of signal resistance R Y, leakage current show circuit, superleak indication loop, big current absorption loop, counting circuit etc.; each loop current limiting protection or clamp function; and successively enter the workspace by level, the whole system circuit is controlled in the safe and effective working range of device.
Claims (7)
1. lightning arrester operational monitoring device, it is characterized in that: it is that low pressure gapless metal-oxide lighting arrester chip, rectification circuit, filtering circuit, leakage current display circuit, superleak indicating circuit, big current absorption circuit, message register are formed by sample of signal resistance R Y, the input end of the two termination rectification circuits of sample of signal resistance R Y, the output termination filtering circuit of rectification circuit, message register coil JSQ one end, another termination leakage current display circuit of message register coil JSQ, superleak indicating circuit, the big current absorption circuit that constitutes by nonlinear element.
2. lightning arrester operational monitoring device according to claim 1 is characterized in that: the described message register coil JSQ other end also is connected to filter capacitor C2, and filter capacitor C2 is before the leakage current display circuit.
3. lightning arrester operational monitoring device according to claim 1, it is characterized in that: described filtering circuit is made of filter capacitor C1.
4. lightning arrester operational monitoring device according to claim 1 is characterized in that: described leakage current display circuit is made of current-limiting resistance R1 and electric current milliammeter A series connection.
5. lightning arrester operational monitoring device according to claim 1 is characterized in that: described superleak indicating circuit is made of current-limiting resistance R2 and outrange pilot lamp L1 series connection.
6. lightning arrester operational monitoring device according to claim 1 is characterized in that: described big current absorption circuit is made of diode D5, diode D6, diode D7, diode D8 series connection.
7. lightning arrester operational monitoring device according to claim 1 is characterized in that: described big current absorption circuit is made of stabilivolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202215202U CN201673227U (en) | 2010-06-06 | 2010-06-06 | Lightning arrestor operation monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202215202U CN201673227U (en) | 2010-06-06 | 2010-06-06 | Lightning arrestor operation monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201673227U true CN201673227U (en) | 2010-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202215202U Expired - Fee Related CN201673227U (en) | 2010-06-06 | 2010-06-06 | Lightning arrestor operation monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201673227U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558493A (en) * | 2013-11-02 | 2014-02-05 | 国家电网公司 | Extra-high voltage zinc oxide arrester leakage current measurement device and method |
| CN106058837A (en) * | 2016-07-19 | 2016-10-26 | 电子科技大学 | Line arrester leakage current detection device without isolation component |
| CN111812396A (en) * | 2020-06-05 | 2020-10-23 | 深圳供电局有限公司 | Overvoltage counting circuit and lightning arrester system |
-
2010
- 2010-06-06 CN CN2010202215202U patent/CN201673227U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558493A (en) * | 2013-11-02 | 2014-02-05 | 国家电网公司 | Extra-high voltage zinc oxide arrester leakage current measurement device and method |
| CN106058837A (en) * | 2016-07-19 | 2016-10-26 | 电子科技大学 | Line arrester leakage current detection device without isolation component |
| CN106058837B (en) * | 2016-07-19 | 2018-09-07 | 电子科技大学 | A kind of leakage conductor leak current detection device of no isolating device |
| CN111812396A (en) * | 2020-06-05 | 2020-10-23 | 深圳供电局有限公司 | Overvoltage counting circuit and lightning arrester system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101215 Termination date: 20170606 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |