CN103499762A - Online detection device for leakage current of lightning arrester of power distribution network - Google Patents
Online detection device for leakage current of lightning arrester of power distribution network Download PDFInfo
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- CN103499762A CN103499762A CN201310454518.8A CN201310454518A CN103499762A CN 103499762 A CN103499762 A CN 103499762A CN 201310454518 A CN201310454518 A CN 201310454518A CN 103499762 A CN103499762 A CN 103499762A
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- lightning arrester
- leakage current
- power distribution
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Abstract
The invention relates to a current detection device for online detection of leakage current of a lightning arrester of a power distribution network. An online detection device for the leakage current of the lightning arrester of the power distribution network comprises a lightning arrester leakage detection sensor, a single chip microcomputer system circuit and a remote transmission unit, wherein an input end of the lightning arrester leakage detection sensor is connected with a electric leakage detection zero sequence current transformer arranged in a lightning arrester ground loop; the remote transmission unit adopts a bidirectional receiving-transmitting wireless communication module; an output end of the lightning arrester leakage detection sensor is connected with the input end of the single chip microcomputer system circuit; the single chip microcomputer system circuit is connected with the remote transmission unit by a communication port; and the single chip microcomputer system circuit is used for calculating leakage current electric parameters of the lightning arrester and outputting the electric parameters to the remote transmission unit. According to the current detection device for the online detection of the leakage current of the lightning arrester of the power distribution network, online detection and uploading of the leakage current of the lightning arrester of a power distribution transformer can be realized; and the auxiliary effect of a partial function of the online detection of the leakage current of the lightning arrester of the power distribution transformer is acted on automatic control of a power distribution system.
Description
Technical field
The present invention relates to a kind of current sensing means, particularly relate to a kind of power distribution network leakage current of an arrester on-line measuring device.
Technical background
Along with developing rapidly of power industry, the proposition of the new problem of intelligent power network, and the further research of distribution system automation control technology, certainly will accelerate the process that distribution system automation is controlled.And this must be that to take that the basic operation duty of equipment and its basic service data detect be basis, and the duty of each online equipment can determine that the normal and high-quality of whole distribution system moves.Comprising lightning arrester.Usually, only, when power supply department is made preventive trial annual spring, just can know whether lightning arrester can continue to use.In actual motion, lightning arrester, because of after the large damage of leakage current punctures, causes the 10KV line tripping to have a power failure often, after can causing this fault of circuit large-area power-cuts to occur when serious, just knows the harm that leakage current of an arrester causes.
Such power distribution network running status, will certainly cause power supply reliability poor, and the device damage rate is high.How to accomplish to prevent trouble before it happens, whether can realize carrying out in real time leakage current of an arrester and detect online, become the problem that work about electric power person must think deeply of being engaged in.
Summary of the invention
The problem proposed for background technology, the present invention proposes a kind of leakage current of an arrester on-line measuring device that can improve power supply reliability.
The technical solution adopted in the present invention is:
A kind of power distribution network leakage current of an arrester on-line measuring device, comprise: lightning arrester leakage detecting sensor (102), microcontroller system circuit and teletransmission unit, described lightning arrester leakage detecting sensor (102) input end is connected in the detection of electrical leakage zero sequence current mutual inductor in lightning arrester (101) ground loop, described teletransmission unit adopts the bidirectional transmit-receive wireless communication module, the output terminal (103) of lightning arrester leakage detecting sensor (102) connects the input end of microcontroller system circuit, microcontroller system circuit is connected with the teletransmission unit by PORT COM, microcontroller system circuit calculates the leakage current of an arrester electrical quantity and outputs to the teletransmission unit.
Described power distribution network leakage current of an arrester on-line measuring device, teletransmission unit bidirectional transmit-receive wireless communication module adopts the mobile communication module, and described mobile communication module is connected with microcontroller system circuit by COM port.
The useful good effect of invention:
1, substation transformer leakage current of an arrester pick-up unit of the present invention, can realize that the substation transformer leakage current of an arrester detects online and uploads, for realizing that distribution system automation controls the booster action will play the online test section of substation transformer leakage current of an arrester function.When leakage current of an arrester surpasses setting value (>=20mA) time, automatically generate Chinese short message by single-chip microcomputer, upload to small towns power supply station early warning computer display and the electrician of small towns power supply station mobile phone, carry out the leakage current of an arrester early warning.
2, substation transformer leakage current of an arrester pick-up unit of the present invention, simple in structure, cost is low, easy to use, economic, practical, reliable.
The accompanying drawing explanation
Fig. 1 is leakage current of an arrester detecting sensor schematic diagram of the present invention;
In figure, number 101 expression lightning arresters, 102 mean the lightning arrester leakage detecting sensor, and 103 mean the output terminal of lightning arrester leakage detecting sensor;
Fig. 2 is microcontroller system circuit schematic diagram of the present invention.
Embodiment
Below by embodiment, technical scheme of the present invention is described in further detail.
embodiment 1
Referring to Fig. 1, Fig. 2, power distribution network leakage current of an arrester on-line measuring device of the present invention, comprise lightning arrester leakage detecting sensor 102, microcontroller system circuit and teletransmission unit, and described teletransmission unit adopts the bidirectional transmit-receive wireless communication module.Lightning arrester leakage detecting sensor 102 input ends are connected in the output terminal of the detection of electrical leakage zero sequence current mutual inductor in lightning arrester 101 ground loops, the output terminal 103 of lightning arrester leakage detecting sensor 102 connects the input end of microcontroller system circuit, microcontroller system circuit is connected with the teletransmission unit by PORT COM, and microcontroller system circuit calculates the leakage current of an arrester electrical quantity and outputs to the teletransmission unit.
Short range wireless transmission can adopt the MANET wireless communication module that utilizes ZIGBEE technology.
embodiment 2
The power distribution network leakage current of an arrester on-line measuring device of the present embodiment, as different from Example 1: described teletransmission unit bidirectional transmit-receive wireless communication module adopts the mobile communication module, and described mobile communication module is connected with microcontroller system circuit by COM port.
Teletransmission unit wireless communication module adopts mobile module, in order to get in touch with wireless communication base station, is not subject to distance limit, facilitates the large district management of distribution system.
Claims (2)
1. a power distribution network leakage current of an arrester on-line measuring device, comprise: lightning arrester leakage detecting sensor (102), microcontroller system circuit and teletransmission unit, described lightning arrester leakage detecting sensor (102) input end is connected in the detection of electrical leakage zero sequence current mutual inductor in lightning arrester (101) ground loop, it is characterized in that: described teletransmission unit adopts the bidirectional transmit-receive wireless communication module, the output terminal (103) of lightning arrester leakage detecting sensor (102) connects the input end of microcontroller system circuit, microcontroller system circuit is connected with the teletransmission unit by PORT COM, microcontroller system circuit calculates the leakage current of an arrester electrical quantity and outputs to the teletransmission unit.
2. power distribution network leakage current of an arrester on-line measuring device according to claim 1, it is characterized in that: described teletransmission unit bidirectional transmit-receive wireless communication module adopts the mobile communication module, and described mobile communication module is connected with microcontroller system circuit by COM port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310454518.8A CN103499762A (en) | 2013-09-30 | 2013-09-30 | Online detection device for leakage current of lightning arrester of power distribution network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310454518.8A CN103499762A (en) | 2013-09-30 | 2013-09-30 | Online detection device for leakage current of lightning arrester of power distribution network |
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|---|---|
| CN103499762A true CN103499762A (en) | 2014-01-08 |
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| CN201310454518.8A Pending CN103499762A (en) | 2013-09-30 | 2013-09-30 | Online detection device for leakage current of lightning arrester of power distribution network |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215815A (en) * | 2014-08-14 | 2014-12-17 | 河南开启电力实业有限公司 | Leakage current monitoring device of lightning arrester |
| CN109245304A (en) * | 2018-10-12 | 2019-01-18 | 广东佛电电器有限公司 | Low pressure cloud platform platform area's distribution transforming Intelligent electric leakage monitors terminal |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0632255B2 (en) * | 1987-12-15 | 1994-04-27 | 富士電機株式会社 | Method of measuring leakage current of lightning arrester |
| JPH06302408A (en) * | 1993-04-16 | 1994-10-28 | San'eisha Mfg Co Ltd | Leakage current measurement device of lightning arrester |
| CN201237622Y (en) * | 2008-04-22 | 2009-05-13 | 南京伏安电力设备有限公司 | On-line monitoring device for three-phase arrester in cabinet |
| CN201373895Y (en) * | 2009-03-09 | 2009-12-30 | 浙江纪元电气集团有限公司 | Online monitoring device of zinc oxide arrester (MOA) |
| 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 |
| CN203502531U (en) * | 2013-09-30 | 2014-03-26 | 河南开启电力实业有限公司 | Online detection device of leakage currents of power distribution network lighting arrestors |
-
2013
- 2013-09-30 CN CN201310454518.8A patent/CN103499762A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0632255B2 (en) * | 1987-12-15 | 1994-04-27 | 富士電機株式会社 | Method of measuring leakage current of lightning arrester |
| JPH06302408A (en) * | 1993-04-16 | 1994-10-28 | San'eisha Mfg Co Ltd | Leakage current measurement device of lightning arrester |
| CN201237622Y (en) * | 2008-04-22 | 2009-05-13 | 南京伏安电力设备有限公司 | On-line monitoring device for three-phase arrester in cabinet |
| CN201373895Y (en) * | 2009-03-09 | 2009-12-30 | 浙江纪元电气集团有限公司 | Online monitoring device of zinc oxide arrester (MOA) |
| 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 |
| CN203502531U (en) * | 2013-09-30 | 2014-03-26 | 河南开启电力实业有限公司 | Online detection device of leakage currents of power distribution network lighting arrestors |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215815A (en) * | 2014-08-14 | 2014-12-17 | 河南开启电力实业有限公司 | Leakage current monitoring device of lightning arrester |
| CN109245304A (en) * | 2018-10-12 | 2019-01-18 | 广东佛电电器有限公司 | Low pressure cloud platform platform area's distribution transforming Intelligent electric leakage monitors terminal |
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Application publication date: 20140108 |