CN203894317U - Online monitoring device used for leakage current of high-voltage cables - Google Patents
Online monitoring device used for leakage current of high-voltage cables Download PDFInfo
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- CN203894317U CN203894317U CN201420125332.8U CN201420125332U CN203894317U CN 203894317 U CN203894317 U CN 203894317U CN 201420125332 U CN201420125332 U CN 201420125332U CN 203894317 U CN203894317 U CN 203894317U
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Abstract
An online monitoring device used for leakage current of high-voltage cables includes a through-opening current transformer, a current collecting module, a current signal processing module, a single-chip microprocessor, a data storage unit, a power module, a communication module, an industrial control screen and the like. A power module adopts an induction power-getting unit and a power-charging and power-getting complementation method, so that a problem that the power module is difficult to mount in different switch stations and power distribution machine rooms is solved and especially power supply in diversified forms is provided for occasions without 220V and 380V electric supply. A detection and protection unit performs protection and control of over-discharge, under-voltage, over-voltage, over-current states of lithium batteries, so that service lifetime of the batteries is prolonged effectively and reliability is improved. The through-opening current transformer is utilized for sampling leakage current of a grounding circuit of a shielding layer of the high-voltage cable and the current collecting module is used for collecting the samples. The distributed installation design realizes the isolation of high voltage, large current and signal sampling processing effectively, so that reliability and anti-interference performance are improved. The online monitoring device provided by the utility model has characteristics of being safe, practical, convenient and reliable through real-time display on the industrial control screen and accurate judgment of leakage current operation states of the high-voltage cables.
Description
Technical field
The utility model relates to on-line monitoring of high-voltage electric equipment technical field, has especially related to a kind of On-line Monitoring of Leakage Current device of high-voltage cable insulating state.
Background technology
High-tension cable is the most frequently used a kind of equipment in electric power power transmission and transformation system field, belongs to one of high-voltage electrical equipment, and its insulating property are related to transmission of electricity safety and power reliable.Conventionally high-tension cable is to be all applied in important events to use, and is installed in ad hoc cable duct, is operated under the rugged environments such as humidity, high temperature throughout the year.Will inevitably there is insulation safety problem in long-term charging operation.The insulation situation of high-tension cable has just manifested very important to life safety and device security and production safety.For operating high-tension cable, power department all requires, in some cycles, it is carried out to safe insulation performance test, as insulation measurement, leakage current test, withstand voltage test, flash test etc.The equipment adopting is Hi-pot Tester, megohmmeter, high-tension bridge normally, the products such as leakage current tester.When test, must have a power failure, the waste of having brought inconvenience and having caused a large amount of manpowers, financial resources, material resources to work about electric power person.Monitoring based on high-tension cable leakage current, effectively Measurement and analysis high-voltage cable insulating layer Ground leakage current judges that its state of insulation is to useful important means of high-tension cable operational factor, for analyzing the measurement of judging insulation leakagel volume leakage stream information under high-tension cable charging operation, provide a kind of method of convenient and efficient.
Summary of the invention
The purpose of this utility model is to provide a kind of measurement mechanism of high-tension cable leakage current, has distributed on-line measurement simple in structure, easy for installation, high-voltage cable insulating leakage current that anti-interference is good.
The utility model is achieved in that described high-voltage cable insulating leakage current monitoring device comprises: punching opening current transformer, current acquisition module, current signal processing module, uniset, data storage cell, power module, communication module, Industry Control screen; Described punching opening current transformer and current acquisition module are joined; Current acquisition module and current signal processing module are joined; Current signal processing module, data storage cell, communication module, Industry Control screen join with uniset; Power module and current acquisition module, current signal processing module, uniset, data storage cell, communication module, Industry Control screen join.
Described punching opening current transformer is open type 500/5 current sensor.
Described current acquisition module can gather some punching opening current transformer signals.
The signal that described current signal processing module is brought each current acquisition module is processed.
Described power module comprises: charhing unit, induction power taking unit, detection and protected location, lithium battery, charhing unit with respond to power taking unit and lithium battery phase and connect, detection is connected in series with lithium battery mutually with protected location; Induction power taking unit is powered by solar energy photovoltaic panel or the electric current loop inductance of high-voltage load is supplied with lithium battery; Lithium battery can accept to respond to the power supply of power taking unit and charhing unit, when induction power taking unit has no idea lithium battery to power, just utilizes charhing unit to charge to lithium battery, realizes the complementarity of lithium battery power supply; Detecting with protected location is mainly that whole power module is detected, protected and controls, and as lithium battery, protects or controls running in the situations such as superpotential, excess current, undercurrent, undercurrent, high temperature, overdischarge, guarantees that current supply circuit normally works.
Described current acquisition module, current signal processing module, uniset, power module, communication module and Industry Control screen are installed in same housing.According to on-the-spot needs, establish some punching opening current transformers and current acquisition module or as a whole measurement mechanism.
The utility model has the advantage of: the leakage current that utilizes punching opening current transformer sampling high-voltage cable shielding layers ground loop, through current acquisition module samples, gather, can meet switchyard, the transformer station of dissimilar different electric pressures, the disposable measurement of all high-tension cables of power distribution room.Punching opening current transformer, does not need to change any transmission & distribution supply line during installation, open type structure does not need to have a power failure yet and installs.Leakage current signal is after real-time measurement, can accurately judge, analyze leakage current state, there is measuring accuracy and can reach 1mA, distributed mounting design is effectively realized the isolation that high pressure and large electric current and signal sampling are processed, improve reliability and strengthen interference free performance, by Industry Control, shield in real time and show, judge and each high-tension cable leakage current running status there is safe, practical, convenient, reliable feature accurately.Power module adopts induction power taking unit and charging power taking complementation, has solved different switchyards, and distribution machine room is difficult to the problem of installing, and does not have especially the place of 220V and 380V civil power that multifarious power supply is provided; Detect with protected location and there is lithium battery overdischarge, under-voltage, overvoltage, over-current state protection and control, effectively extending battery life improves reliability.
Accompanying drawing explanation
Accompanying drawing 1: the utility model structural representation.
embodiment:
The utility model is achieved in that described high-tension cable leakage current on-Line Monitor Device comprises: punching opening current transformer (1), current acquisition module (2), current signal processing module (3), uniset (4), data storage cell (5), power module (6), communication module (7), Industry Control screen (8), charhing unit (9), induction power taking unit (10), lithium battery (11), detection and protected location (12).Described punching opening current transformer (1) joins with current acquisition module (2); Current acquisition module (2) is joined with current signal processing module (3); Current signal processing module (3), data storage cell (5), communication module (7), Industry Control screen (8) join with uniset (4); Power module (6) and current acquisition module (2), current signal processing module (3), uniset (4), data storage cell (5), communication module (7), Industry Control screen (8) join.The leakage current signal that utilizes punching opening current transformer (1) sampling high-voltage cable shielding layers ground loop, gathers through current acquisition module samples, and each high-tension cable all can have a shielding layer grounding loop, and range of current is conventionally between 0-6A.Punching opening current transformer is open type 50/5 current sensor, has met the measurement of different cable leakage streams completely.This screen layer leakage current over the ground can be according to different mounting meanss, different voltage, the different constructions of cable and difference.At the high-tension cable of many of having of the switchyard of dissimilar different electric pressures, transformer station, power distribution room, punching opening current transformer (1) does not need to change any transmission & distribution supply line while installing, and open type structure does not need to have a power failure yet and installs.Each cable is all installed punching opening current transformer (1) and is joined with current acquisition module (2), and current acquisition module (2) can gather some punching opening current transformer signals (1).Can carry out disposable measurement to all high-tension cables of whole switchyard, transformer station, power distribution room.Leakage current signal is after real-time measurement, according to different periods, different leakage currents, analyze contrast, can accurately judge, analyze leakage current state, determine high-tension cable leakage current situation over the ground, effectively the state of insulation of high-tension cable be analyzed.The current signal that signal processing module (3) is brought according to current acquisition module (2) is processed measuring accuracy can reach 1mA.Signal is processed acquisition module (3) current signal that several current transformers bring of can once sampling, current signal processing module (3) is processed the signal of bringing, become digital signal and single-chip microcomputer (4) to join the current signal conversion process of 0-6A, single-chip microcomputer (4) delivers to LAN (Local Area Network) by communication module (7) and host computer shows; Single-chip microcomputer (4) is also delivered to the signal of each electric current data storage cell (5) and Industry Control screen (8) and is shown and consult storage data.The current value that data storage cell (5) can be realized different time stores; The isolation that the effective realization of the distributed mounting design of punching opening current transformer (1) and high pressure or large current return and signal sampling are processed, improves reliability and strengthens interference free performance.Industry Control screen (8) adopt the refreshed ET200 in the Kunlun display screen, have that data are consulted, figure type analysis, show in real time, judge and each high-tension cable leakage current running status there is safe, practical, convenient, reliable feature accurately.
Described power module (6) comprising: charhing unit (9), induction power taking unit (10), lithium battery (11), detection and protected location (12).Charhing unit (9) and induction power taking unit (10) and lithium battery (11) mutually and connect, detect and are connected in series mutually with lithium battery (11) with protected location (12); Induction power taking unit (10) is powered by solar energy photovoltaic panel or lithium battery is supplied with in the induction of high tension loop load current, lithium battery (11) can accept to respond to the power supply of power taking unit (10) or charhing unit (9), at ordinary times mainly by induction power taking unit (10) power supply, when if induction power taking unit (10) has no idea lithium battery (11) to power, just utilize charhing unit (9) to charge to lithium battery (11), realize the complementarity of the double power supply of lithium battery (11); Detecting with protected location (12) is mainly that whole power module is detected, protects, controlled, as lithium battery (11), protect or control running in the situations such as superpotential, excess current, undercurrent, undercurrent, high temperature, overdischarge, guaranteeing that current supply circuit normally works; Lithium battery (11) adopts the lithium battery bag of 24V3000mAH; Power module (6) adopts induction to get single unit (10) and the complementary power taking of charhing unit (9), solved different switchyards, distribution machine room only have high-tension cable through the place of transformation, do not have the place of 220V, 380V civil power to be difficult to the problem of installing yet, provide multifarious power supply, the enforcement of Guarantee item; Detect with protected location (12) and had and puts, overvoltage, over-current state protection and controlling, effectively extending battery life improve power supply reliability.
Described current acquisition module (2), current signal processing module (3), uniset (4), data storage cell (5), power module (6), communication module (7), Industry Control screen (8) are installed in same housing.According to on-the-spot needs, the high-tension cable of varying number and different electric pressures is installed to some corresponding punching opening current transformers (1) and become as a whole measurement mechanism with current acquisition module (2), work about electric power person can consult according to actual need of work the leakage data of real-time data and different time, for judging that the running status of every high-tension cable provides an effective reference data, reducing has a power failure detects number of times.
Claims (2)
1. high-tension cable leakage current on-Line Monitor Device, is characterized in that: comprise punching opening current transformer, current acquisition module, current signal processing module, uniset, data storage cell, power module, communication module, Industry Control screen; Punching opening current transformer and current acquisition module are joined; Current acquisition module and current signal processing module are joined; Current signal processing module, data storage cell, communication module, Industry Control screen join with uniset; Power module and current acquisition module, current signal processing module, uniset, data storage cell, communication module, Industry Control screen join.
2. high-tension cable leakage current on-Line Monitor Device according to claim 1, is characterized in that, described power module, also comprises: charhing unit, induction power taking unit, detection and protected location, lithium battery; Charhing unit and induction power taking unit and lithium battery phase connect, detection is connected in series with lithium battery mutually with protected location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420125332.8U CN203894317U (en) | 2014-03-19 | 2014-03-19 | Online monitoring device used for leakage current of high-voltage cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420125332.8U CN203894317U (en) | 2014-03-19 | 2014-03-19 | Online monitoring device used for leakage current of high-voltage cables |
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| Publication Number | Publication Date |
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| CN203894317U true CN203894317U (en) | 2014-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420125332.8U Expired - Fee Related CN203894317U (en) | 2014-03-19 | 2014-03-19 | Online monitoring device used for leakage current of high-voltage cables |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569771A (en) * | 2015-01-29 | 2015-04-29 | 西安交通大学 | Primary-side insulation discharge pulse detector for oil-immersed current transformer |
| CN105738688A (en) * | 2016-05-09 | 2016-07-06 | 国网浙江省电力公司杭州供电公司 | Electrical inspection and locking device based on leakage current of high voltage equipment |
| CN106093690A (en) * | 2016-08-11 | 2016-11-09 | 国网天津市电力公司 | Utilize the iron core on-line monitoring system of thermo-electric generation supply source |
| CN107741518A (en) * | 2017-11-15 | 2018-02-27 | 国网辽宁省电力有限公司鞍山供电公司 | A kind of cable shaft earth current test device of more opening joint testing currents |
| CN108152569A (en) * | 2017-11-29 | 2018-06-12 | 杭州柯林电气股份有限公司 | Cable overvoltage signal detection method and device |
| CN108196542A (en) * | 2017-12-31 | 2018-06-22 | 江苏密斯欧智能科技有限公司 | A kind of transmission line of electricity leakage current crusing robot control device |
| CN108828394A (en) * | 2018-09-29 | 2018-11-16 | 绵阳市维博电子有限责任公司 | A kind of railway feed cable leakage current on-line measuring device and method |
| CN110837052A (en) * | 2019-11-21 | 2020-02-25 | 长沙矿冶研究院有限责任公司 | System and method for rapidly detecting residual energy of retired power battery |
| CN111426980A (en) * | 2020-03-24 | 2020-07-17 | 河北为信电子科技股份有限公司 | Hand-held type electric leakage check gauge |
-
2014
- 2014-03-19 CN CN201420125332.8U patent/CN203894317U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569771A (en) * | 2015-01-29 | 2015-04-29 | 西安交通大学 | Primary-side insulation discharge pulse detector for oil-immersed current transformer |
| CN105738688A (en) * | 2016-05-09 | 2016-07-06 | 国网浙江省电力公司杭州供电公司 | Electrical inspection and locking device based on leakage current of high voltage equipment |
| CN106093690A (en) * | 2016-08-11 | 2016-11-09 | 国网天津市电力公司 | Utilize the iron core on-line monitoring system of thermo-electric generation supply source |
| CN107741518A (en) * | 2017-11-15 | 2018-02-27 | 国网辽宁省电力有限公司鞍山供电公司 | A kind of cable shaft earth current test device of more opening joint testing currents |
| CN107741518B (en) * | 2017-11-15 | 2023-12-19 | 国网辽宁省电力有限公司鞍山供电公司 | Cable well grounding current testing device for multi-opening combined current testing |
| CN108152569A (en) * | 2017-11-29 | 2018-06-12 | 杭州柯林电气股份有限公司 | Cable overvoltage signal detection method and device |
| CN108196542A (en) * | 2017-12-31 | 2018-06-22 | 江苏密斯欧智能科技有限公司 | A kind of transmission line of electricity leakage current crusing robot control device |
| CN108828394A (en) * | 2018-09-29 | 2018-11-16 | 绵阳市维博电子有限责任公司 | A kind of railway feed cable leakage current on-line measuring device and method |
| CN110837052A (en) * | 2019-11-21 | 2020-02-25 | 长沙矿冶研究院有限责任公司 | System and method for rapidly detecting residual energy of retired power battery |
| CN111426980A (en) * | 2020-03-24 | 2020-07-17 | 河北为信电子科技股份有限公司 | Hand-held type electric leakage check gauge |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20141022 Termination date: 20180319 |
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| CF01 | Termination of patent right due to non-payment of annual fee |