CN103595129B - Power distribution network earth leakage protective device intelligent inspection system - Google Patents

Power distribution network earth leakage protective device intelligent inspection system Download PDF

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Publication number
CN103595129B
CN103595129B CN201310545530.XA CN201310545530A CN103595129B CN 103595129 B CN103595129 B CN 103595129B CN 201310545530 A CN201310545530 A CN 201310545530A CN 103595129 B CN103595129 B CN 103595129B
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China
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earth leakage
leakage protective
module
current
action
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CN201310545530.XA
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CN103595129A (en
Inventor
陈琪琅
辛伟平
陈庚煌
谢宗彬
张建星
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State Grid Corp of China SGCC
State Grid Fujian Electric Power Co Ltd
Quanzhou Power Supply Co of State Grid Fujian Electric Power Co Ltd
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State Grid Corp of China SGCC
State Grid Fujian Electric Power Co Ltd
Quanzhou Power Supply Co of State Grid Fujian Electric Power Co Ltd
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Abstract

The invention discloses a kind of power distribution network earth leakage protective device intelligent inspection system, include Portable earth leakage protective testing instrument for electrified, server, background management system and earth leakage protective device action warning device, described Portable earth leakage protective testing instrument for electrified to be communicated with background management system by server and is connected, required local all earth leakage protective devices of patrolling and examining are had to the numbering of unique ID, and unique bar code is sticked on every platform earth leakage protective device, power distribution network earth leakage protective device intelligent inspection system of the present invention, adopt solid-state relay, because it does not have mechanical contact, there is on-off time short feature, therefore improve the stability of measurement and the certainty of measurement of operate time, electrical isolation can also be realized simultaneously.

Description

Power distribution network earth leakage protective device intelligent inspection system
Technical field
The present invention relates to the electric leakage of a kind of power distribution network and protect note device checkout equipment, particularly a kind of power distribution network earth leakage protective device intelligent inspection system.
Background technology
Along with going deep into of intelligent grid construction, after upgrade of rural power grids, the requirement of people to safety utilization of electric power is more and more higher, requires it is also more and more higher to the intelligent level of electrical network.Earth leakage protective device is the visual plant being widely used in being used for guaranteeing in low-voltage alternating-current power distribution network Electrical Safety, obtains penetration and promotion energetically in recent years.But earth leakage protective device is in long-time running, its performance index inevitably change, and likely form malfunction, tripping, akinesia protection when people beast gets an electric shock; Some low voltage electric networks or user privately exit protector and run, and leave hidden danger, jeopardize the safe operation of electrical network to safety utilization of electric power; Electrical production and safety monitor department attach great importance to this.In order to change regulatory format in the past, adapt to power distribution network, the especially development of rural power grids, carrying out effectively supervision to earth leakage protective device is current important topic.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part; and provide one to utilize equipment routing inspection technology and earth leakage protective device live testing technique construction earth leakage protective device intelligent inspection system, realize the power distribution network earth leakage protective device intelligent inspection system to effective supervision of power distribution network earth leakage protective device running status and tripping operation remote alarm.
A kind of power distribution network earth leakage protective device intelligent inspection system; include Portable earth leakage protective testing instrument for electrified, server, background management system and earth leakage protective device action warning device; described Portable earth leakage protective testing instrument for electrified to be communicated with background management system by server and is connected; required local all earth leakage protective devices of patrolling and examining are had to the numbering of unique ID; and unique bar code is sticked on every platform earth leakage protective device
Described Portable earth leakage protective testing instrument for electrified mainly includes communication module, bar code scan module, analog switch, single chip control unit, human-machine interface module, measurement module, clock module and memory module, described communication module, bar code scan module is connected with single chip control unit by analog switch, human-machine interface module, measurement module, real-time clock module and memory module are connected with single chip control unit respectively, measurement module comprises two large divisions, a part is the leakage current of simulating different size as requested, according to the desired action current scope of conventional earth leakage protective device, the leakage current arranging many grades is adjustable, another part adopts alternating current pulse-detecting circuit, to measure the trip operation time of earth leakage protective device, in measurement module, flow through earth leakage protective device by the certain leakage current of simulation make it trip operation, and then record its operating current and operate time, described alternating current pulse-detecting circuit is by single chip control unit, counter unit, solid-state relay, photoelectrical coupler, and multiple resistance of different resistance, being flushed to counter unit by single chip control unit by a Guan pulse makes corresponding gear connect to control solid-state relay, resistance then by accessing different resistance simulates different leakage currents, alternating-current pulse is detected by photoelectrical coupler, when after earth leakage protective device action, alternating current power-off, alternating-current pulse disappears, record the operate time that time that alternating-current pulse continues is earth leakage protective device, the time and date of measurement is read from clock module, to be stored into together with the operating current operate time measured in memory module and display on the display apparatus, also be sent to background management system by communication module simultaneously,
Described background management system is connected with SQL database, carries out on computers managing and preserving with the data got by Portable earth leakage protective testing instrument for electrified;
Described earth leakage protective device action warning device is arranged on earth leakage protective device, includes testing circuit and communication module is formed.
Power distribution network earth leakage protective device intelligent inspection system of the present invention; adopt solid-state relay, because it does not have mechanical contact, there is on-off time short feature; therefore improve the stability of measurement and the certainty of measurement of operate time, can also electrical isolation be realized simultaneously.Because GPRS module and bar code scan module are all with the serial ports being connected to single-chip microcomputer; analog switch is adopted to select time-sharing multiplex here; therefore the present invention has characterisitic parameter test, laser bar code identification scanning, data storage also transporting function; the operating characteristics of the accurate live testing earth leakage protective device of energy; the reliable teletransmission of test data is to backstage earth leakage protective device database; realize the intellectual analysis to all earth leakage protective device running statuses in area under one's jurisdiction and supervision; improve and patrol and examine efficiency; reduce equipment operation maintenance cost, improve the reliability of distribution safety utilization of electric power comprehensively.
Described human-machine interface module comprises button and display unit two parts; select to be manual or automatic transmission by button; the desired action current of manual i.e. known earth leakage protective device; the test action time is carried out voluntarily by button set action electric current gear; automatic transmission is then that single chip control unit is by the leakage current each gear of poll from low to high; earth leakage protective device action is tripped, and then obtains operating current and operate time.
Described earth leakage protective device action warning device detects outlet alternating voltage pulses by the single chip control unit of Portable earth leakage protective testing instrument for electrified measurement module in real time by interrupt pin INT0; cause alternating voltage pulses to disappear during outlet power-off, after earth leakage protective device action warning device detects, triggered communication module sends alarm signal to background management system immediately.
In sum, the present invention's following advantage compared to existing technology:
1.utilize equipment routing inspection technology and earth leakage protective device live testing technique construction earth leakage protective device intelligent inspection system, realize the effective supervision to power distribution network earth leakage protective device running status and tripping operation remote alarm.
2. portable intelligent tester for leakage protector has been invented; integrate singlechip technology, laser bar code scanning technique, data storage and remote argon plasma, earth leakage protective device live testing technology; solve earth leakage protective device bar-code identification, the live testing of operating characteristics and data autostore and teletransmission, low price, be beneficial to popularization.
3.test data teletransmission refreshes earth leakage protective device database automatically, and not only tool be data show and off-limit alarm, and makes evaluation to earth leakage protective device state, and off-limit alarm information passes to staff's mobile phone simultaneously.
4. the present invention has installed long-distance monitorng device in important protection parts such as circuit, platform districts; achieve tripping operation real-time remote monitoring and the warning of the important protective device of circuit and platform district; the real-time teletransmission of tripping operation information, to staff's mobile phone, is conducive to Distribution Network Failure and searches and locate.
Accompanying drawing explanation
Fig. 1 is the system construction drawing of power distribution network earth leakage protective device intelligent inspection system of the present invention.
Fig. 2 is power distribution network earth leakage protective device intelligent inspection system Organization Chart of the present invention.
Fig. 3 is the structure chart of portable intelligent earth leakage protective device testing instrument for electrified of the present invention.
Fig. 4 of the present inventionly takes formula intelligent electricity leakage protector testing instrument for electrified measurement module circuit diagram.
Fig. 5 is the circuit diagram of earth leakage protective device action warning device.
Fig. 6 is the workflow diagram of earth leakage protective device action warning device.
Embodiment
Below in conjunction with embodiment, the present invention is described in more detail.
Embodiment 1
A kind of power distribution network earth leakage protective device intelligent inspection system; include Portable earth leakage protective testing instrument for electrified, server, background management system and earth leakage protective device action warning device; described Portable earth leakage protective testing instrument for electrified to be communicated with background management system by server and is connected
Data in order to the operating current of live line measurement earth leakage protective device and operate time, and are beamed back backstage by GPRS module and are uploaded to data management system by described Portable earth leakage protective testing instrument for electrified automatically.Its structure mainly comprises portable intelligent earth leakage protective device testing instrument for electrified and is made up of single chip control unit, measurement module, human-machine interface module, bar code scan module, GPRS data delivery module, memory module, clock module etc.(accompanying drawing 3)
To local all earth leakage protective device Unified numbers at the beginning of cruising inspection system foundation, make arbitrary earth leakage protective device have unique ID, and stick unique bar code on every platform earth leakage protective device.During measurement, first the laser bar code scanner of use test instrument scans bar code, obtains the ID of tested earth leakage protective device.
Human-computer interaction module comprises key part and liquid-crystal display section.Select to be manual or automatic transmission by key part; the desired action current of manual i.e. known earth leakage protective device; the test action time is carried out voluntarily by button set action electric current gear; automatic transmission is then that single chip control unit is by the leakage current each gear of poll from low to high; earth leakage protective device action is tripped, and then obtains operating current and operate time.Liquid Crystal Module is used for data display (accompanying drawing 3).
Measurement module comprises two large divisions, and a part is the leakage current of simulating different size as requested, and according to the desired action current scope of conventional earth leakage protective device, this tester is set as that ten grades of leakage currents are adjustable; Another part is alternating current pulse-detecting circuit, measures the trip operation time (accompanying drawing 4) of earth leakage protective device.In measurement module, flow through earth leakage protective device by the certain leakage current of simulation make it trip operation, and then record its operating current and operate time.Its concrete principle is: single-chip microcomputer U2 is by sending pulse to U3(74HC4017) control RELAY(solid-state relay) corresponding gear is connected; different leakage currents (ten grades optional) is simulated by the resistance accessing different resistance; then by U1(photoelectrical coupler) detect 220V alternating-current pulse; when after earth leakage protective device action; alternating current power-off; 220V alternating-current pulse disappears, and records the operate time that time that 220V alternating-current pulse continues is earth leakage protective device.(accompanying drawing 4).
For ease of management, the time and date of measurement is read from clock module, to be stored into together with data in the memory module (EEPROM) of tester inside with operating current operate time measured etc. and display on a liquid crystal display, also by GPRS module, these data are beamed back data management system (accompanying drawing 3) automatically simultaneously.
bythe solid-state relay that microcontroller is controlled on corresponding gear to 74HC4017 decade counter by transmission pulse is connected, thus realizes the connection of corresponding gear.Use solid-state relay here, because it does not have mechanical contact, there is the feature of on-off time short (compare mechanical relay, can ignore) here, therefore improve the stability of measurement and the certainty of measurement of operate time, can also electrical isolation be realized simultaneously.Because GPRS module and bar code scan module are all with the serial ports being connected to single-chip microcomputer, analog switch is adopted to select time-sharing multiplex (accompanying drawing 3) here.
during use,by two test pencil access corresponding two ends of the non-electricity protector that leaks hunting after start, when after earth leakage protective device action tripping operation.
Earth leakage protective device operational management database is stored in described background management system; the described earthing mode of database combination rural power grids and the performance characteristics of earth leakage protective device; science configuration electrical network three grades of earth leakage protective devices; wherein the scope of total protection and middle rank protection be excise low voltage electric network basic routing line in time branched line on ground connection etc. of breaking produce the fault of larger leakage currents; and final stage protection is mounted in user's receiving end; the scope of its protection prevents user's built-in electrical insulation from destroying, and personal indirect contact occurs and gets an electric shock.According in situation on the spot and rural area low-voltage power technical regulation about the regulation of installing earth leakage protective device; desired action current value of adjusting and specified operate time value; and be saved to earth leakage protective device operational management database, during to facilitate test at the scene and desired action current, time compare, judge its running status.
Earth leakage protective device operating mode appraisal procedure: set up state estimation information systems according to the accident analysis of three grades of earth leakage protective devices, determines state estimation information weight, makes three grades of earth leakage protective device state estimation models.
Portable earth leakage protective testing instrument for electrified detect the operating current scanned and the earth leakage protective device management system be sent in computer server terminal by gsm module operate time; this system is connected with SQL database, and the data that so just tester can be got carry out managing and preserving on computers.In use, IIS is set, SQL database is installed, earth leakage protective device operation management system client is installed, enters earth leakage protective device operation management system.
Described earth leakage protective device action warning device, when after earth leakage protective device action tripping operation, sends alarm signal to background management system.Outlet alternating voltage pulses is detected in real time by interrupt pin INT0 by single-chip microcomputer U2.Cause alternating voltage pulses to disappear during outlet power-off, trigger GPRS module immediately after earth leakage protective device action warning device detects and send alarm signal to backstage.(accompanying drawing 5)
Primarily of test section and GPRS module composition (accompanying drawing 6)
Earth leakage protective device action warning device is installed on corresponding earth leakage protective device.
It is same as the prior art that the present embodiment does not state part.

Claims (3)

1. a power distribution network earth leakage protective device intelligent inspection system; it is characterized in that: include Portable earth leakage protective testing instrument for electrified, server, background management system and earth leakage protective device action warning device; described Portable earth leakage protective testing instrument for electrified to be communicated with background management system by server and is connected; required local all earth leakage protective devices of patrolling and examining are had to the numbering of unique ID; and unique bar code is sticked on every platform earth leakage protective device
Described Portable earth leakage protective testing instrument for electrified mainly includes communication module, bar code scan module, analog switch, single chip control unit, human-machine interface module, measurement module, clock module and memory module, described communication module, bar code scan module is connected with single chip control unit by analog switch, human-machine interface module, measurement module, clock module and memory module are connected with single chip control unit respectively, measurement module comprises two large divisions, a part is the leakage current of simulating different size as requested, according to the desired action current scope of conventional earth leakage protective device, adjustable many grades of leakage currents are set, another part adopts alternating current pulse-detecting circuit, to measure the trip operation time of earth leakage protective device, in measurement module, flow through earth leakage protective device by the certain leakage current of simulation make it trip operation, and then record its operating current and operate time, described alternating current pulse-detecting circuit is by single chip control unit, counter unit, solid-state relay, photoelectrical coupler, and multiple resistance of different resistance are formed, to control solid-state relay, corresponding gear is connected to counter unit by sending pulse by single chip control unit, resistance then by accessing different resistance simulates different leakage currents, alternating-current pulse is detected by photoelectrical coupler, when after earth leakage protective device action, alternating current power-off, alternating-current pulse disappears, record the operate time that time that alternating-current pulse continues is earth leakage protective device, the time and date of measurement is read from clock module, with the operating current measured, be stored into together operate time in memory module and also show on the display apparatus, also be sent to background management system by communication module simultaneously,
Described background management system is connected with SQL database, carries out on computers managing and preserving with the data got by Portable earth leakage protective testing instrument for electrified;
Described earth leakage protective device action warning device is arranged on earth leakage protective device, includes testing circuit and communication module.
2. power distribution network earth leakage protective device intelligent inspection system according to claim 1; it is characterized in that: described human-machine interface module comprises button and display unit two parts; select to be manual or automatic transmission by button; the desired action current of manual i.e. known earth leakage protective device; the test action time is carried out voluntarily by button set action electric current gear; automatic transmission is then that single chip control unit is by the leakage current each gear of poll from low to high; earth leakage protective device action is tripped, and then obtains operating current and operate time.
3. power distribution network earth leakage protective device intelligent inspection system according to claim 2; it is characterized in that: described earth leakage protective device action warning device detects outlet alternating voltage pulses by the single chip control unit of Portable earth leakage protective testing instrument for electrified measurement module in real time by interrupt pin INT0; cause alternating voltage pulses to disappear during outlet power-off, after earth leakage protective device action warning device detects, triggered communication module sends alarm signal to background management system immediately.
CN201310545530.XA 2013-11-06 2013-11-06 Power distribution network earth leakage protective device intelligent inspection system Active CN103595129B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201674281U (en) * 2010-05-10 2010-12-15 湖州久天电力科技有限公司 Electrical leakage protector with wireless communication function
CN201682327U (en) * 2010-05-19 2010-12-22 王士纲 Leakage protector remote control system
CN202353173U (en) * 2011-11-17 2012-07-25 德阳电业局 Leakage protector

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7768756B2 (en) * 2007-04-27 2010-08-03 Hewlett-Packard Development Company, L.P. Leakage current protection circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201674281U (en) * 2010-05-10 2010-12-15 湖州久天电力科技有限公司 Electrical leakage protector with wireless communication function
CN201682327U (en) * 2010-05-19 2010-12-22 王士纲 Leakage protector remote control system
CN202353173U (en) * 2011-11-17 2012-07-25 德阳电业局 Leakage protector

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
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