CN1393698A - In-line monitor system and method for dirt sparkle of transformer station - Google Patents
In-line monitor system and method for dirt sparkle of transformer station Download PDFInfo
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- CN1393698A CN1393698A CN 01115300 CN01115300A CN1393698A CN 1393698 A CN1393698 A CN 1393698A CN 01115300 CN01115300 CN 01115300 CN 01115300 A CN01115300 A CN 01115300A CN 1393698 A CN1393698 A CN 1393698A
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Abstract
An in-line dirt sparkles monitoring system for transformer station is composed of indoor host and outdoor unit, and the system is able to monitor the surface leakgae current of insulator, the pulse frequency higher than characteristic value and ambient humidify. The indoor host is composed of radio communication device, industrial controller, and I/O display. The outdoor unit consists of intelligent sensor, radio communication device and battery.
Description
The present invention relates to a kind of dirt sparkle of transformer station on-line monitoring system, particularly relate to a kind of filthy On-line Monitoring of Leakage Current system.
The dirt sparkle of transformer station accident is owing to equipment outer insulation surface contamination under atmospheric pollution, when running into dense fog and drizzle, and the moisture film of the moistening formation conduction of the conductive materials in the filth, thus there is leakage current to flow through along insulator surface.The degree of fouling and the filthy composition that not only depend on insulator when the size of voltage one timing leakage current, and it is relevant with the wettability of dirt, increase along with leakage current, insulator surface develops into arc discharge by spark discharge, when leakage current surpasses certain value, local arc stretches along face and finally causes flashover, owing to the filthy insulation flashover accident that causes has accounted for second in power grid accident, be only second to lightning disturbance, and the loss of flashover is 10 times of lightning disturbance, the large tracts of land pollution flashover had taken place in the whole nation six big electrical networks nearly all, caused very big loss.
In order to prevent the generation of pollution flashover accident, electric system has taked the large tracts of land accent to climb, change composite insulator, install the antifouling creeping-increasing skirt of silicon rubber additional and rinse and be coated with RTV, regularly clean measures such as insulator, certain effect is all being brought into play in these measures, but these methods all are gradation for surface pollution to be used as a definite value handle, and pollution flashover is used as static state prevents.In order to grasp prediction pollution flashover occurrence tendency under different time insulator contamination degree and the weather extremes, we must carry out the characteristic quantity that can reflect the equipment outer insulation situation accurately, reliable on-line monitoring.Chinese patent (the patent No.: z190205395.7) filthy leakage current automonitor, the Chinese patent (patent No.: z193207372.7) the filthy electric current automatic monitoring warning of circuit device, all can be to leakage current measurement, warning and on-line monitoring, but the voltage frequency, the instant wireless transmission data of ambient humidity, certain amplitude are not related to or relate to comprehensively.
Purpose of the present invention realizes exactly to the Substation Insulator surface leakage current, surpass certain amplitude pulse frequency and ambient humidity signal and carry out continuous on-line monitoring, mode by wireless transmission data, more accurately more fully provide surface temperature operating mode and pollution flashover pre-alarm service, for the filthy foundation that process and prediction pollution flashover provide science of gathering is understood in antifouling specific responsibility to the operator on duty.
The object of the present invention is achieved like this: according to mechanism and the insulated circuit surface leakage current and the voltage of pollution flashover, relation between filth and the humidity, take directly to gather insulating surface leakage current signal and ambient humidity signal, after the A/D conversion, by wireless telecommunications data are sent into industrial computer system, industrial computer system passes through the leakage current size, the quantity that surpasses a certain feature amplitude pulse frequency, moisture signal comes the pollution level of judgment device external insulation, judgment device is to be in normal condition, the situation that abnormal conditions are still dangerous, and abnormal conditions and dangerous situation are carried out early warning and warning, in addition, by demonstration, utilize alternating current arc to restrike to the instant waveform of leakage current, the recovery condition can judge that also the possibility of pollution flashover reports to the police to it.
This system mainly is made up of intelligence sensor, radio communication apparatus, industrial computer, and total system can be divided into indoor host computer and off-premises extension two large divisions by function.
Off-premises extension by intelligence sensor, radio communication apparatus 1., electric battery three parts form, intelligence sensor comprises: surface current sensor, humidity sensor, A/D conversion, single card microcomputer; Electric battery comprises: accumulator, solar panel.The quantity of off-premises extension can be equipped with according to user's needs.
The function of off-premises extension is: surface current sensor acquisition insulator surface leakage current, humidity sensor is gathered the ambient humidity signal, with the signal that collects after A/D adjusts conversion, again with the amplitude of leakage current with above among the temporary RAM of the pulse amplitude frequency of setting valve, by patrol and examine automatically at interval or main frame patrol and examine command request immediately, 1. above information and corresponding time are sent to indoor host computer through radio communication apparatus.
Indoor host computer by radio communication apparatus 2., industrial computer, input and output display device form.Industrial computer comprises: LCD panel, littlely lose out, function switch key, pre-alarm show.2. radio communication apparatus will import industrial computer into from the digital signal that off-premises extension receives, and industrial computer compares data by the parameter of setting, storage and warning.The industrial computer panel shows leakage current amplitude, the pulse frequency, relative humidity, the data acquisition time that surpass setting valve, and by the time automatic open printing machine printout of setting.The predeterminable early warning value of industrial computer, alarming value when leakage current during greater than alarming value, are reported to the police to duty room.Can carry out the operation such as setting, emission, reception instruction, inquiry mode, waveform demonstration of early-warning parameters by industrial computer software.
Adopt technique scheme, can be to the Substation Insulator surface leakage current, the pulse frequency, the ambient humidity signal that surpass setting valve carry out real time on-line monitoring, can reflect the filthy situation in the equipment operation truly, can obtain nature, real filthy current characteristic data, gather process, the filthy time that reaches dangerous values of prediction studying filth, sum up the foundation that reasonable alarming value provides science, for antifouling monitoring provides effective means.
The present invention is described further below in conjunction with drawings and Examples.
Fig. 1 is a principle of the invention block diagram.
Fig. 2 is an off-premises extension partial function synoptic diagram.
Fig. 3 is an indoor host computer partial function synoptic diagram.
1 is off-premises extension among the figure, and 2 is indoor host computer, and 3 is intelligence sensor, 4 be radio communication apparatus 1., 5 be radio communication apparatus 2., 6 is industrial computer, 7 are the input and output display device, and 8 is electric battery, and 9 is indoor power supply, 10 is the surface current sensor, and 11 is humidity sensor, and 12 is signal condition and A/D conversion equipment, 13 is single card microcomputer, and 14 are+12V accumulator and solar buoy rechargable battery, and 15 are+the 12V voltage conversion device, 16 is display, and 17 is printer, and 18 is keyboard, mouse.
Surface current sensor 10 in the intelligence sensor 3 is by the direct collection surface leakage current of the conducting ring that is installed in the Substation Insulator surface, humidity sensor 11 is gathered the insulator ambient humidity, after the A/D conversion, again with among leakage current amplitude and the RAM of the amplitude frequency in temporary single-chip microcomputer 13 above setting value, by patrol and examine automatically at interval or main frame patrol and examine command request immediately, above information and relative humidity and corresponding time are sent out data through radio communication apparatus 4.The radio communication apparatus 5 of indoor host computer 2 receives this information and is sent to industrial computer 6,6 pairs of leakage current sizes of industrial computer, the quantity, the data acquisition time that surpass a certain setting valve pulse frequency show by display, and by the automatic open printing machine of setting 17 of time, printout.The leakage current maximal value that 2 groups of each passages occur is stored in industrial computer 6 per tour, time of occurrence, rh value, leakage current also preserve during greater than 25mA one group of maximum impulse frequency (inferior/min), the data of leakage current values greater than early warning value and alarming value are all stored, waiting time is not less than 1 year, is provided with back full-time staff's inquiry, analyzes to sum up and uses, when electrical leakage quantity during greater than pre-, alarming value, to operator on duty's early warning and warning.
Intelligent patrol detection device 3 adopts 10 high-speed a/d conversions, carry out round-the-clock continuous working, be stored in after the data processing among the RAM in the single-chip microcomputer, wait for that the industrial computer 6 of indoor host computer 2 provides current order transmission signal or timed sending, guarantee the continuity of data acquisition and the display requirement of instant waveform.Sensor 10,11 adopts the ultracrystallite material to do iron core, guarantees sensitivity and anti-electromagnetic interference (EMI) and the influence of avoiding environment temperature.
System is to parameter setting such as the surface leakage current that influences pollution flashover, the pulse frequency that surpasses the amplitude of adjusting, relative humidity and revise all openly to the user, operates by industrial computer.
Claims (7)
1, a kind of dirt sparkle of transformer station on-line monitoring system and method, it is characterized in that the Substation Insulator surface leakage current, carry out continuous on-line monitoring above setting the amplitude pulse frequency and ambient humidity, adopt the high frequency carrier digital transmission information of two-forty (19.2kbit/s) in the wireless receiving and dispatching mode, provide surperficial dirty wet cooling condition and pollution flashover early warning, alert service to the operator on duty.
2, according to claim 1 described a kind of dirt sparkle of transformer station on-line monitoring system and method, it is characterized in that: this system is made up of indoor host computer and off-premises extension two large divisions.
Off-premises extension is made up of intelligence sensor, radio communication apparatus, electric battery three parts.Intelligence sensor comprises: surface current sensor, humidity sensor, A/D conversion, single card microcomputer; Electric battery comprises: accumulator, solar panel.
Indoor host computer is made up of radio communication apparatus, industrial computer, input and output display device, and industrial computer comprises: LCD panel, littlely lose out, function switch key, pre-alarm show.
3, according to claim 1 described a kind of dirt sparkle of transformer station on-line monitoring system and method, it is characterized in that: insulating surface leakage current signal and ambient humidity signal are directly gathered by system, after the A/D conversion, by wireless telecommunications data are sent into industrial computer system, industrial computer system passes through leakage current size, moisture signal, surpass a certain characteristic pulse frequency quantity and judge the pollution level of insulating surface, judgment device is in normal condition, abnormal conditions or dangerous situation, and abnormal conditions and dangerous situation are reported to the police.
4, according to claim 1 described a kind of dirt sparkle of transformer station on-line monitoring system and method, it is characterized in that:, utilize alternating current arc to restrike, recovers the possibility of condition analysis judgement pollution flashover and it is reported to the police by the instant ripple of leakage current (ripple in real time) shape is shown.
5, a kind of dirt sparkle of transformer station on-line monitoring system according to claim 1 and method is characterized in that: sensor adopts ultramicro-crystal alloy to make magnetic core, guarantees current precision and the stability of moving out of doors.
6, a kind of dirt sparkle of transformer station on-line monitoring system according to claim 1 and method, it is characterized in that: these system core parts are: intelligence sensor, radio communication apparatus and industrial computer.
7, a kind of dirt sparkle of transformer station on-line monitoring system according to claim 1 and method is characterized in that: transmit data by radio communication apparatus between off-premises extension and the indoor host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01115300 CN1393698A (en) | 2001-06-25 | 2001-06-25 | In-line monitor system and method for dirt sparkle of transformer station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01115300 CN1393698A (en) | 2001-06-25 | 2001-06-25 | In-line monitor system and method for dirt sparkle of transformer station |
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| CN1393698A true CN1393698A (en) | 2003-01-29 |
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| CN 01115300 Pending CN1393698A (en) | 2001-06-25 | 2001-06-25 | In-line monitor system and method for dirt sparkle of transformer station |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100401080C (en) * | 2006-02-20 | 2008-07-09 | 武汉华电国电高压科技发展有限公司 | On-line monitoring method and system for converting station high voltage electrical apparatus |
| CN101986165A (en) * | 2010-09-26 | 2011-03-16 | 珠海泰坦科技股份有限公司 | Method for monitoring and analyzing leakage current of contaminated insulator |
| CN102279247A (en) * | 2011-06-26 | 2011-12-14 | 无锡同春新能源科技有限公司 | Humidity measuring and reporting device with humidity sensor powered by solar energy photovoltaic power generation system |
| CN101726674B (en) * | 2008-10-30 | 2012-07-04 | 国网电力科学研究院武汉南瑞有限责任公司 | Method for on-line assessment of insulation on-line monitoring system of substation |
| CN102591275A (en) * | 2012-01-18 | 2012-07-18 | 国网信息通信有限公司 | Transformer substation assisting management system and method |
| CN101419263B (en) * | 2008-12-11 | 2013-08-28 | 嘉兴市大桥电力电器厂 | Insulation property on-line monitoring instrument for composite insulator of powerline |
| CN103324127A (en) * | 2013-07-03 | 2013-09-25 | 河北工业大学 | Electric multiple unit flashover prevention device |
| CN103597363A (en) * | 2011-07-04 | 2014-02-19 | Sma太阳能技术股份公司 | Method and system for detecting an arc fault in a photovoltaic power system |
| CN104061963A (en) * | 2014-06-18 | 2014-09-24 | 湖南铁道职业技术学院 | Railway power supply insulator pollutant online detection system |
| CN104076260A (en) * | 2014-07-16 | 2014-10-01 | 胡小青 | High-accuracy equipment for detecting pollution flashover of insulator |
| CN104076259A (en) * | 2014-07-16 | 2014-10-01 | 胡小青 | Device for detecting pollution flashover of insulator on transmission line in real time |
| CN105242187A (en) * | 2015-11-09 | 2016-01-13 | 江苏省电力公司检修分公司 | Self-triggering power transmission line insulator pollution flashover early-warning device |
| CN105259464A (en) * | 2015-11-09 | 2016-01-20 | 江苏省电力公司检修分公司 | A power transmission line insulator distributed leakage current monitoring device |
-
2001
- 2001-06-25 CN CN 01115300 patent/CN1393698A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100401080C (en) * | 2006-02-20 | 2008-07-09 | 武汉华电国电高压科技发展有限公司 | On-line monitoring method and system for converting station high voltage electrical apparatus |
| CN101726674B (en) * | 2008-10-30 | 2012-07-04 | 国网电力科学研究院武汉南瑞有限责任公司 | Method for on-line assessment of insulation on-line monitoring system of substation |
| CN101419263B (en) * | 2008-12-11 | 2013-08-28 | 嘉兴市大桥电力电器厂 | Insulation property on-line monitoring instrument for composite insulator of powerline |
| CN101986165A (en) * | 2010-09-26 | 2011-03-16 | 珠海泰坦科技股份有限公司 | Method for monitoring and analyzing leakage current of contaminated insulator |
| CN102279247A (en) * | 2011-06-26 | 2011-12-14 | 无锡同春新能源科技有限公司 | Humidity measuring and reporting device with humidity sensor powered by solar energy photovoltaic power generation system |
| CN103597363A (en) * | 2011-07-04 | 2014-02-19 | Sma太阳能技术股份公司 | Method and system for detecting an arc fault in a photovoltaic power system |
| CN102591275A (en) * | 2012-01-18 | 2012-07-18 | 国网信息通信有限公司 | Transformer substation assisting management system and method |
| CN103324127B (en) * | 2013-07-03 | 2016-04-20 | 河北工业大学 | Electric multiple unit flashover prevention device |
| CN103324127A (en) * | 2013-07-03 | 2013-09-25 | 河北工业大学 | Electric multiple unit flashover prevention device |
| CN104061963A (en) * | 2014-06-18 | 2014-09-24 | 湖南铁道职业技术学院 | Railway power supply insulator pollutant online detection system |
| CN104061963B (en) * | 2014-06-18 | 2016-09-07 | 湖南铁道职业技术学院 | A kind of railway is powered insulator contamination on-line detecting system |
| CN104076259A (en) * | 2014-07-16 | 2014-10-01 | 胡小青 | Device for detecting pollution flashover of insulator on transmission line in real time |
| CN104076260A (en) * | 2014-07-16 | 2014-10-01 | 胡小青 | High-accuracy equipment for detecting pollution flashover of insulator |
| CN105242187A (en) * | 2015-11-09 | 2016-01-13 | 江苏省电力公司检修分公司 | Self-triggering power transmission line insulator pollution flashover early-warning device |
| CN105259464A (en) * | 2015-11-09 | 2016-01-20 | 江苏省电力公司检修分公司 | A power transmission line insulator distributed leakage current monitoring device |
| CN105259464B (en) * | 2015-11-09 | 2018-11-09 | 国网江苏省电力有限公司检修分公司 | Electric transmission line isolator distribution leakage current monitoring device |
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