CN201707380U - Portable MOA live detection device based on GPS synchronization - Google Patents

Portable MOA live detection device based on GPS synchronization Download PDF

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Publication number
CN201707380U
CN201707380U CN2010202079890U CN201020207989U CN201707380U CN 201707380 U CN201707380 U CN 201707380U CN 2010202079890 U CN2010202079890 U CN 2010202079890U CN 201020207989 U CN201020207989 U CN 201020207989U CN 201707380 U CN201707380 U CN 201707380U
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CN
China
Prior art keywords
moa
gps
measuring
portable
electricity
Prior art date
Application number
CN2010202079890U
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Chinese (zh)
Inventor
高翔
江秀臣
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上海科能电气科技有限公司
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Priority to CN2010202079890U priority Critical patent/CN201707380U/en
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Publication of CN201707380U publication Critical patent/CN201707380U/en

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Abstract

The utility model relates to a portable MOA (metal oxide arrester) live detection device based on GPS synchronization. The device comprises a voltage monitoring device, the portable MOA live detection device and an upper computer, wherein the voltage monitoring device is mounted on the lateral side of a voltage transformer in a transformer substation. In the measurement, the portable MOA live detection device has communication access to the voltage monitoring device via a wireless communication network; the portable MOA live detection device is connected with the MOA; and the upper computer is connected with the portable MOA live detection device via a USB (universal serial bus). Compared with the prior art, the utility model has the advantages that the measurement process is simplified, the safety risk is reduced, and the harmonic interference is eliminated at the same time.

Description

A kind of based on the synchronous portable MOA measuring device with electricity of GPS
Technical field
The utility model relates to a kind of portable MOA measuring device with electricity, especially relates to a kind of based on the synchronous portable MOA measuring device with electricity of GPS.
Background technology
Zinc-Oxide Arrester (MOA) make moist or during insulation ag(e)ing its leakage current resistive current component obviously increase, portable MOA measuring device with electricity on-line measurement total current, and adopt voltage transformer secondary side voltage to analyze its resistive current component as phase reference, reach that online detection and diagnosis MOA make moist or the purpose of insulation ag(e)ing degree.Present portable MOA measuring device with electricity generally all is directly to connect with signal cable from the PT secondary side when obtaining PT secondary voltage signal as phase reference, though voltage transformer (VT) and MOA are positioned at same transformer station, but all must change the wiring of mutual inductor secondary side when measuring at every turn, by working specification, voltage transformer (VT) need be cut off the power supply when changing wiring, whole measuring process is very loaded down with trivial details, and the safe operation of transformer station is brought certain hidden danger.
Summary of the invention
The purpose of this utility model be exactly provide in order to overcome the defective that above-mentioned prior art exists a kind of can the simplified measurement process reduce simultaneously potential safety hazard and can harmonic carcellation disturb based on the synchronous portable MOA measuring device with electricity of GPS.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of based on the synchronous portable MOA measuring device with electricity of GPS, it is characterized in that, comprise voltage monitor, portable MOA measuring device with electricity, host computer, described voltage monitor is installed in transformer substation voltage mutual inductor side, when measuring, described portable MOA measuring device with electricity is connected with the voltage monitor communication by cordless communication network, described portable MOA measuring device with electricity is connected with MOA, and described host computer is connected with portable MOA measuring device with electricity by the USB line.
Described voltage monitor comprises tension measuring circuit, first microprocessor, first memory, a GPS module, first wireless communication module, first gps antenna, first wireless communication antenna, described first microprocessor is connected with tension measuring circuit, first memory, a GPS module, first wireless communication module respectively, a described GPS module is connected with first gps antenna, and described first wireless communication module is connected with first wireless communication antenna.
Described portable MOA measuring device with electricity comprises current measurement circuit, second microprocessor, second memory, LCD display, keyboard, the 2nd GPS module, second wireless communication module, second gps antenna, second wireless communication antenna, described second microprocessor respectively with current measurement circuit, second memory, LCD display, keyboard, the 2nd GPS module, second wireless communication module connects, described second microprocessor is provided with USB interface, described the 2nd GPS module is connected with second gps antenna, and described second wireless communication module is connected with second wireless communication antenna.
Described MOA is provided with the MOA counter, and MOA is connected with the current measurement circuit of portable MOA measuring device with electricity by the MOA counter.
Compared with prior art, the utlity model has following advantage:
1, voltage monitor only needs one-step installation, makes that based on the simultaneous techniques of GPS this system need not change voltage transformer secondary side wiring before each the measurement, has reduced potential safety hazard greatly the simplified measurement process time.
2, eliminated the influence of harmonic interference based on the phase algorithm of Fourier transform, even under the bigger situation of mains by harmonics, still can accurately measure current in resistance property.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a voltage monitor synoptic diagram of the present utility model;
Fig. 3 is a portable MOA measuring device with electricity of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Embodiment
As shown in Figure 1, a kind of based on the synchronous portable MOA measuring device with electricity of GPS, comprise voltage monitor 3, portable MOA measuring device with electricity 4, host computer 5; Described voltage monitor 3 is installed in transformer substation voltage mutual inductor 6 sides, and voltage signal is carried out on-line monitoring; Described portable MOA measuring device with electricity 4 does not fixedly mount a little, is regularly carried by the personnel of patrolling and examining on duty the MOA20 leakage circuit is measured; Described host computer 5 is equipped with upper computer software, can carry out visual, current in resistance property trend analysis to the data of voltage monitor 3 and 4 collections of portable MOA measuring device with electricity.
Described voltage monitor 3 comprises tension measuring circuit 7, first microprocessor 8, first memory 10, a GPS module 11, first wireless communication module 9, first gps antenna 31, first wireless communication antenna 32, described first microprocessor 8 is connected with tension measuring circuit 7, first memory 10, a GPS module 11, first wireless communication module 9 respectively, a described GPS module 11 is connected with first gps antenna 31, and described first wireless communication module 9 is connected with first wireless communication antenna 32.
Described portable MOA measuring device with electricity 4 comprises current measurement circuit 12, second microprocessor 15, second memory 17, LCD display 18, keyboard 16, the 2nd GPS module 17, second wireless communication module 14, second gps antenna 41, second wireless communication antenna 42, described second microprocessor 15 respectively with current measurement circuit 12, second memory 17, LCD display 18, keyboard 16, the 2nd GPS module 13, second wireless communication module 14 connects, described second microprocessor 15 is provided with usb 19, described the 2nd GPS module 13 is connected with second gps antenna 41, and described second wireless communication module 14 is connected with second wireless communication antenna 42.Described MOA 20 is provided with MOA counter 21, and MOA 20 is connected with the current measurement circuit 12 of portable MOA measuring device with electricity 4 by MOA counter 21.
Voltage monitor 3 is at the accurate timing down-sampling of a GPS module 11, and the voltage data that obtains has precise time label.Sampling is sent to portable MOA measuring device with electricity 4 by first wireless communication module 9.
Portable MOA measuring device with electricity 4 obtains the voltage sample data with precise time label by second wireless communication module 14.Itself has the GPS accurate timing too, and sampling obtains having the leakage current data of precise time label, thereby the voltage and current of diverse location is realized temporal synchro measure.The GPS timing error tens nanosecond the order of magnitude, can satisfy the synchronous accuracy requirement of voltage and current signal fully.
The analysis of current in resistance property is adopted the voltage and current first-harmonic is carried out the method realization that quadrature decomposes, promptly the time is gone up synchronous voltage and current sampled data and carry out Fourier transform respectively, obtain the amplitude and the phase place of first-harmonic, if electric current and voltage fundamental phase difference is θ, the current first harmonics effective value is I, and then current in resistance property is I*cos θ.
MOA 20 is positioned at transformer station's diverse location with voltage transformer (VT) 6.Regularly carrying 4 pairs of MOA20 leakage circuits of portable MOA measuring device with electricity by the personnel of patrolling and examining on duty measures.Connect MOA counter 21 during measurement and obtain the leakage current total current, start the one-time detection process by keyboard operation.
At first send the synchronous acquisition order by second wireless communication module 14 to voltage monitor 3 by portable MOA measuring device with electricity 4.Under the GPS of two devices module accurate timing, synchronously voltage and leakage current are sampled by voltage monitor 3 and portable MOA measuring device with electricity 4.Sampling finishes back voltage monitor 3 voltage data is sent to portable MOA measuring device with electricity 4 by first wireless communication module 9.
After obtaining the voltage and current data of synchronized sampling, the method that portable MOA measuring device with electricity 4 adopts Fourier transform and quadrature to decompose is calculated current in resistance property, and data current in resistance property data are uploaded to host computer 5 by usb 19, the LCD display 18 on the device is used for the implementation status of display operation order and voltage measurement, leakage current measurement, current in resistance property result of calculation etc.
5 pairs of each measurement results of host computer show with curve, diagrammatic form, so that analyze making moist or situation such as insulation ag(e)ing in the MOA operational process.

Claims (4)

1. one kind based on the synchronous portable MOA measuring device with electricity of GPS, it is characterized in that, comprise voltage monitor, portable MOA measuring device with electricity, host computer, described voltage monitor is installed in transformer substation voltage mutual inductor side, when measuring, described portable MOA measuring device with electricity is connected with the voltage monitor communication by cordless communication network, described portable MOA measuring device with electricity is connected with MOA, and described host computer is connected with portable MOA measuring device with electricity by the USB line.
2. according to claim 1 a kind of based on the synchronous portable MOA measuring device with electricity of GPS, it is characterized in that, described voltage monitor comprises tension measuring circuit, first microprocessor, first memory, the one GPS module, first wireless communication module, first gps antenna, first wireless communication antenna, described first microprocessor respectively with tension measuring circuit, first memory, the one GPS module, first wireless communication module connects, a described GPS module is connected with first gps antenna, and described first wireless communication module is connected with first wireless communication antenna.
3. according to claim 1 a kind of based on the synchronous portable MOA measuring device with electricity of GPS, it is characterized in that, described portable MOA measuring device with electricity comprises current measurement circuit, second microprocessor, second memory, LCD display, keyboard, the 2nd GPS module, second wireless communication module, second gps antenna, second wireless communication antenna, described second microprocessor respectively with current measurement circuit, second memory, LCD display, keyboard, the 2nd GPS module, second wireless communication module connects, described second microprocessor is provided with USB interface, described the 2nd GPS module is connected with second gps antenna, and described second wireless communication module is connected with second wireless communication antenna.
4. according to claim 1ly a kind ofly it is characterized in that based on the synchronous portable MOA measuring device with electricity of GPS described MOA is provided with the MOA counter, MOA is connected with the current measurement circuit of portable MOA measuring device with electricity by the MOA counter.
CN2010202079890U 2010-05-27 2010-05-27 Portable MOA live detection device based on GPS synchronization CN201707380U (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102520230A (en) * 2011-12-15 2012-06-27 山东电力集团公司菏泽供电公司 Zinc oxide lightning arrester operation state detection method
CN102608392A (en) * 2012-03-22 2012-07-25 上海市电力公司 MOA (metal oxide arrester) resistive current detection system
WO2012097492A1 (en) * 2011-01-20 2012-07-26 辽宁省电力有限公司 Wireless system for measuring voltage distribution of arrester
CN102621372A (en) * 2012-03-22 2012-08-01 上海市电力公司 CVT (Constant-Voltage Transformer) monitoring device for monitoring MOA (Metal Oxide Arrester) voltage
CN102662100A (en) * 2012-06-06 2012-09-12 上海市电力公司 Detection method for MOA (manager office automation) resistive current detecting system
CN102662101A (en) * 2012-06-06 2012-09-12 上海市电力公司 Detection method for metal oxide arrester (MOA) resistive current portable monitoring equipment
CN103033702A (en) * 2012-12-03 2013-04-10 桂林赛普电子科技有限公司 Multi-functional handheld tester of lighting protection device
CN103675593A (en) * 2013-12-11 2014-03-26 国家电网公司 Electrification testing system and method for zinc oxide arrester in armored cabinet
CN104635088A (en) * 2015-02-10 2015-05-20 张晓冰 Intelligent sensing device of zinc oxide arrester tester
CN106443307A (en) * 2013-05-07 2017-02-22 陈国栋 Online insulation monitoring system for power transformation equipment
CN106771799A (en) * 2016-11-18 2017-05-31 武汉精伦电气有限公司 Based on the synchronous arrester condition diagnosing system of clock
CN109870625A (en) * 2019-02-25 2019-06-11 国网福建省电力有限公司漳州供电公司 A kind of Zinc-Oxide Arrester live line measurement device based on wireless communication

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012097492A1 (en) * 2011-01-20 2012-07-26 辽宁省电力有限公司 Wireless system for measuring voltage distribution of arrester
CN102520230A (en) * 2011-12-15 2012-06-27 山东电力集团公司菏泽供电公司 Zinc oxide lightning arrester operation state detection method
CN102608392A (en) * 2012-03-22 2012-07-25 上海市电力公司 MOA (metal oxide arrester) resistive current detection system
CN102621372A (en) * 2012-03-22 2012-08-01 上海市电力公司 CVT (Constant-Voltage Transformer) monitoring device for monitoring MOA (Metal Oxide Arrester) voltage
CN102662100A (en) * 2012-06-06 2012-09-12 上海市电力公司 Detection method for MOA (manager office automation) resistive current detecting system
CN102662101A (en) * 2012-06-06 2012-09-12 上海市电力公司 Detection method for metal oxide arrester (MOA) resistive current portable monitoring equipment
CN103033702A (en) * 2012-12-03 2013-04-10 桂林赛普电子科技有限公司 Multi-functional handheld tester of lighting protection device
CN103033702B (en) * 2012-12-03 2015-10-28 桂林赛普电子科技有限公司 Multifunctional hand-held lightning arrester tester
CN106597229B (en) * 2013-05-07 2019-11-15 陈国栋 The working method of 35kV or more transformer equipment insulated on-line monitoring system
CN106707007B (en) * 2013-05-07 2019-03-19 国网内蒙古东部电力有限公司 The working method of transformer equipment insulated on-line monitoring system
CN106443307A (en) * 2013-05-07 2017-02-22 陈国栋 Online insulation monitoring system for power transformation equipment
CN106597229A (en) * 2013-05-07 2017-04-26 陈国栋 Working method of insulation online monitoring system for voltage transformation equipment (greater than 35kV)
CN106707007A (en) * 2013-05-07 2017-05-24 陈国栋 Working method of power transformation equipment insulation online monitoring system
CN103675593A (en) * 2013-12-11 2014-03-26 国家电网公司 Electrification testing system and method for zinc oxide arrester in armored cabinet
CN104635088A (en) * 2015-02-10 2015-05-20 张晓冰 Intelligent sensing device of zinc oxide arrester tester
CN106771799A (en) * 2016-11-18 2017-05-31 武汉精伦电气有限公司 Based on the synchronous arrester condition diagnosing system of clock
CN109870625A (en) * 2019-02-25 2019-06-11 国网福建省电力有限公司漳州供电公司 A kind of Zinc-Oxide Arrester live line measurement device based on wireless communication

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