CN105759187A - Combined electric apparatus partial discharge multi-information fusion diagnostic device - Google Patents
Combined electric apparatus partial discharge multi-information fusion diagnostic device Download PDFInfo
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- CN105759187A CN105759187A CN201610238228.3A CN201610238228A CN105759187A CN 105759187 A CN105759187 A CN 105759187A CN 201610238228 A CN201610238228 A CN 201610238228A CN 105759187 A CN105759187 A CN 105759187A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1254—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of gas-insulated power appliances or vacuum gaps
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1209—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using acoustic measurements
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Abstract
The invention relates to the technical field of partial discharge detection equipment, and especially relates to a combined electric apparatus partial discharge multi-information fusion diagnostic device. The device is formed by connecting an ultrahigh-frequency signal conversion module, a high-frequency signal conversion module, an ultrasonic signal conversion module, a power frequency signal conversion module and a collection and analysis module. The device can simultaneously detect partial discharging ultrahigh-frequency signal, high-frequency signal and ultrasonic signal, contrastive analysis is performed on the three kinds of acoustoelectric signals, the anti-interference capacity is strong, the positioning is precise, so that the effectiveness and reliability of the detection result is greatly improved. The device avoids the attenuation caused by cable transmitting analog signal, the wiring of the device is more concise than before, and the in-site application is more flexible. The synchronous starting and parallel acquiring of high/low speed data acquisition units are realized. According to the invention, the device is based on the virtual instrument technology, the cost is low, the software development cycle is short, the structure is flexible, and the expansibility is strong.
Description
Technical field
The present invention relates to Partial Discharge Detection equipment technical field, particularly relate to a kind of combined electrical apparatus partial-discharge Multi-information acquisition diagnostic equipment.
Background technology
Gas insulated combined electrical equipment (gasinsulatedswitchgear, GIS), owing to floor space is few, it is little, safe and reliable to operation to be affected by the external environment and safeguards the advantages such as simple, at home and abroad obtains increasingly using widely in recent decades.But in the manufacture and assembling process of GIS, often due to the problems such as technique can make the defect staying some little inside GIS, such as metal particle, insulative air gap etc., these small defects may develop into the discharge channel of danger in GIS running, and finally causes dielectric breakdown accident.Therefore, for preventing the insulation fault of GIS device, ensure the safe operation of power system, operating GIS is carried out partial discharge monitoring and just seems and become more and more important.
In GIS partial discharge is monitored, it has been found that equipment exists after shelf depreciation rapidly and accurately to local breakdown location, and to formulate efficiently feasible equipment repair and maintenance scheme, this is for hidden danger of fixing a breakdown rapidly, and safeguards system safe operation has great importance.Therefore, shelf depreciation location technology is paid close attention to widely in GIS site safety is safeguarded.At present, adopt superfrequency (UHF) method and ultrasonic method to carry out shelf depreciation location both at home and abroad more.Superfrequency method is widely used due to principle high advantage simple, sensitive, but it is difficult to being accurately positioned of equipment deficiency.Particularly when defect is positioned near insulator, it is difficult to accurately determine the air chamber at its place, this adds increased the complexity of repair and maintenance.Although ultrasonic locating method sensitivity is better, positional accuracy is high, but its effective range is less, and during on-the-spot application, work is comparatively heavy.Therefore, how effectively in conjunction with both advantages, it is achieved quick and precisely position, the focus that field maintenance person pays close attention in recent years is become.
It is currently based on the exploitation of acoustoelectric combined method and has a lot of Portable GIS local discharge detection system, if this type of system adopts down conversion process, because sample rate is low, it is impossible to for partial discharge location.If being used for positioning, the sample frequency required because of ultra-high frequency signal is significantly high, it is generally adopted ultrahigh speed oscillograph as system hardware platform, so by the restriction of its onboard memory space, the limited length of continuous sampling, the amplitude phase resolved plot analysis for discharging of the abundant partial discharge pulse's signal cannot be obtained, therefore can not carry out electric discharge diagnosis.
Summary of the invention
It is an object of the invention to provide a kind of combined electrical apparatus partial-discharge Multi-information acquisition diagnostic equipment, the ultrahigh-frequency signal of GIS partial discharge, high-frequency current signal and ultrasonic signal can be carried out synchronous detecting by this device, Partial Discharge Sources is positioned, and it is strong to have anti-on-the-spot interference performance, the accuracy of Partial Discharge Detection is high, measures the feature that easy efficiency is high.
To achieve the above object of the invention, the present invention realizes by the following technical solutions:
The combined electrical apparatus partial-discharge Multi-information acquisition diagnostic equipment, wherein ultrahigh-frequency signal modular converter, high-frequency signal modular converter, ultrasonic signal modular converter, power frequency component modular converter are all connected with collection analysis module.
Described ultrahigh-frequency signal modular converter includes ultrahigh-frequency signal sensor, ultrahigh-frequency signal conditioner, ultrahigh-frequency signal wireless transmitter and ultrahigh-frequency signal wireless receiver；Wherein, ultrahigh-frequency signal sensor, ultrahigh-frequency signal conditioner, ultrahigh-frequency signal wireless transmitter and ultrahigh-frequency signal wireless receiver are sequentially connected with, and the other end of ultrahigh-frequency signal wireless receiver connects high-speed synchronous parallel data acquisition device；
Described high-frequency signal modular converter includes high-frequency signal sensor, high-frequency signal conditioner, high-frequency signal wireless transmitter and high-frequency signal wireless receiver；Wherein, high-frequency signal sensor, high-frequency signal conditioner, high-frequency signal wireless transmitter and high-frequency signal wireless receiver are sequentially connected with, and the other end of high-frequency signal wireless receiver is connected with high-speed synchronous parallel data acquisition device；
Described ultrasonic signal modular converter includes ultrasonic signal sensor, ultrasonic signal conditioner, ultrasonic signal wireless transmitter and ultrasonic signal wireless receiver；Wherein, ultrasonic signal sensor, ultrasonic signal conditioner, ultrasonic signal wireless transmitter and ultrasonic signal wireless receiver are sequentially connected and connect, and the other end of ultrasonic signal wireless receiver is connected with low speed synchronous parallel data acquisition device；
Described power frequency component modular converter includes power frequency component sensor, power frequency component conditioner, power frequency component wireless transmitter and power frequency component wireless receiver；Wherein, power frequency component sensor, power frequency component conditioner, power frequency component wireless transmitter and power frequency component wireless receiver, it is sequentially connected and connects, the other end of power frequency component wireless receiver is connected with low speed synchronous parallel data acquisition device；
Described collection analysis module includes high-speed synchronous parallel data acquisition device, low speed synchronous parallel data acquisition device and notebook computer；Wherein, high-speed synchronous parallel data acquisition device and low speed synchronous parallel data acquisition device are arranged in same PXI frame, are connected by frame data/address bus, and are connected with notebook-computer network-interface by PCIExpress interface.
The signal that described ultrahigh-frequency signal sensor detects, after ultrahigh-frequency signal conditioner processes, is sent to ultrahigh-frequency signal wireless receiver by ultrahigh-frequency signal wireless transmitter, is then connected to high-speed synchronous parallel data acquisition device；
The signal that described high-frequency signal sensor detects, after high-frequency signal conditioner processes, is sent tremendously high frequency signal wireless receiver by high-frequency signal wireless transmitter, is then connected to high-speed synchronous parallel data acquisition device；
The signal that described ultrasonic signal sensor detects, after ultrasonic signal conditioner processes, is sent to ultrasonic signal wireless receiver by ultrasonic signal wireless transmitter, is then connected to low speed synchronous parallel data acquisition device；
The signal that described power frequency component sensor detects, after power frequency component conditioner processes, is sent to power frequency component wireless receiver by power frequency component wireless transmitter, is then connected to low speed synchronous parallel data acquisition device；
Described high-speed synchronous parallel data acquisition device is using partial discharge pulse's signal itself as triggering signal, and this triggering signal exports the triggering signal input port to low speed synchronous parallel data acquisition device by the signal output port that triggers of high-speed synchronous parallel data acquisition device through high frequency coaxial shielded signal line locking.
The detection bandwidth of described ultrahigh-frequency signal sensor is 300MHz～1500MHz, the detection bandwidth of described high-frequency signal sensor is 0.5MHz～30MHz, the detection bandwidth of described ultrasonic signal sensor is 20kHz～200kHz, and described power frequency component sensor couples the power-frequency voltage signal of tested operational outfit.
Described notebook computer is provided with based on LabVIEW virtual instrument platform development system, notebook computer is responsible for controlling, process, analyze and showing, the selection of system configuration parameter is provided for operator, the relevant parameter such as including sample rate, sampling length, activation levels, sample magnitude scope, phase alignment skew by the human-computer interaction interface of systems soft ware；In data acquisition, system shows original waveform and the data of sampling monitoring data collection state in real time；Analytic function can select the PRPD spectrum data after original waveform data or calculating as required, and is identified Analysis of Partial Discharge according to shelf depreciation determination methods and Partial Discharge Sources localization method.
The diagnostic method of the described combined electrical apparatus partial-discharge Multi-information acquisition diagnostic equipment is, after the diagnostic equipment starts normal operation, described collection analysis module passes through high-speed synchronous parallel data acquisition device, low speed synchronous parallel data acquisition device is simultaneously received described ultrahigh-frequency signal sensor, high-frequency signal sensor, the ultrahigh-frequency signal of ultrasonic signal sensor and the coupling of power frequency component sensor, one or more in high-frequency current signal and ultrasonic signal, by a few class acoustoelectric signals are analyzed, exclude the interference signal, can directly judge that transformer station to be measured gas-insulated switch exists shelf depreciation.
The shelf depreciation source location mode of the described diagnostic equipment is based on the amplitude of the multiple and super high frequency signal of this device or the time difference, superfrequency and the ultrasonic signal time difference or what the multiplex ultrasonic signal time difference positioned, and the described time difference tries to achieve based on energy accumulation method.
Described shelf depreciation source location includes Primary Location and is accurately positioned.
Compared with prior art, advantages of the present invention is as follows:
The present invention is based on the combined electrical apparatus partial-discharge Multi-information acquisition diagnostic equipment of virtual instrument technique, compared with prior art has the innovative point of following four aspects:
1, the present invention can detect the ultrahigh-frequency signal of shelf depreciation, high-frequency current signal and ultrasonic signal simultaneously, and by this three classes acoustoelectric signal is analyzed, capacity of resisting disturbance is strong, and accurate positioning is greatly improved the validity and reliability of testing result.
2, adopting wireless data transmission mode between sensor conditioner and the data acquisition unit in the present invention, advantage is in that both to avoid the decay that cable transmission analogue signal causes, and the wiring simultaneously making this device is more succinct, and on-the-spot application is more flexible.
3, integrated high-speed of the present invention runs simultaneously data acquisition unit and low speed synchronous parallel data acquisition device in one, high-speed synchronous parallel data acquisition device is with partial discharge pulse's signal for triggering signal, this signal is synchronized to low speed synchronous parallel data acquisition device simultaneously, it is achieved the synchronous averaging of high, low speed data acquisition unit, parallel acquisition.
4, the present invention is based on virtual instrument technique, and cost is relatively low, and software development cycle is short, flexible structure, has very strong autgmentability.
Accompanying drawing explanation
Fig. 1 is the overall construction drawing of the combined electrical apparatus partial-discharge Multi-information acquisition diagnostic equipment.
nullIn figure: ultrahigh-frequency signal modular converter 1，High-frequency signal modular converter 2，Ultrasonic signal modular converter 3，Power frequency component modular converter 4，Collection analysis module 5，Ultrahigh-frequency signal sensor 11，Ultrahigh-frequency signal conditioner 12，Ultrahigh-frequency signal wireless transmitter 13，Ultrahigh-frequency signal wireless receiver 14，High-frequency signal sensor 21，High-frequency signal conditioner 22，High-frequency signal wireless transmitter 23，High-frequency signal wireless receiver 24，Ultrasonic signal sensor 31，Ultrasonic signal conditioner 32，Ultrasonic signal wireless transmitter 33，Ultrasonic signal wireless receiver 34，Power frequency component sensor 41，Power frequency component conditioner 42，Power frequency component wireless transmitter 43，Power frequency component wireless receiver 44，High-speed synchronous parallel data acquisition device 51，Low speed synchronous parallel data acquisition device 52，Notebook computer 53.
Detailed description of the invention
Embodiment, with reference to Fig. 1, a kind of combined electrical apparatus partial-discharge Multi-information acquisition diagnostic equipment, including ultrahigh-frequency signal modular converter 1, high-frequency signal modular converter 2, ultrasonic signal modular converter 3, power frequency component modular converter 4 and collection analysis module 5.Wherein, ultrahigh-frequency signal modular converter 1, high-frequency signal modular converter 2, ultrasonic signal modular converter 3, power frequency component modular converter 4 are all connected with collection analysis module 5.
Described ultrahigh-frequency signal modular converter 1 includes ultrahigh-frequency signal sensor 11, ultrahigh-frequency signal conditioner 12, ultrahigh-frequency signal wireless transmitter 13 and ultrahigh-frequency signal wireless receiver 14.Ultrahigh-frequency signal sensor 11, ultrahigh-frequency signal conditioner 12, ultrahigh-frequency signal wireless transmitter 13 and ultrahigh-frequency signal wireless receiver 14 are sequentially connected with, and the other end of ultrahigh-frequency signal wireless receiver 14 connects high-speed synchronous parallel data acquisition device 51.
During work, the signal that ultrahigh-frequency signal sensor 11 detects, after ultrahigh-frequency signal conditioner 12 processes, is sent to ultrahigh-frequency signal wireless receiver 14 by ultrahigh-frequency signal wireless transmitter 13, is then connected to high-speed synchronous parallel data acquisition device 51.
Described high-frequency signal modular converter 2 includes high-frequency signal sensor 21, high-frequency signal conditioner 22, high-frequency signal wireless transmitter 23 and high-frequency signal wireless receiver 24.High-frequency signal sensor 21, high-frequency signal conditioner 22, high-frequency signal wireless transmitter 23 and high-frequency signal wireless receiver 24 are sequentially connected with, and the other end of high-frequency signal wireless receiver 24 is connected with high-speed synchronous parallel data acquisition device 51.
During work, the signal that high-frequency signal sensor 21 detects, after high-frequency signal conditioner 22 processes, is sent tremendously high frequency signal wireless receiver 24 by high-frequency signal wireless transmitter 23, is then connected to high-speed synchronous parallel data acquisition device 51；
Described ultrasonic signal modular converter 3 includes ultrasonic signal sensor 31, ultrasonic signal conditioner 32, ultrasonic signal wireless transmitter 33 and ultrasonic signal wireless receiver 34.Ultrasonic signal sensor 31, ultrasonic signal conditioner 32, ultrasonic signal wireless transmitter 33 and ultrasonic signal wireless receiver 34 are sequentially connected and connect, and the other end of ultrasonic signal wireless receiver 34 is connected with low speed synchronous parallel data acquisition device 52.
During work, the signal that ultrasonic signal sensor 31 detects, after ultrasonic signal conditioner 32 processes, is sent to ultrasonic signal wireless receiver 34 by ultrasonic signal wireless transmitter 33, is then connected to low speed synchronous parallel data acquisition device 52；
Described power frequency component modular converter 4 includes power frequency component sensor 41, power frequency component conditioner 42, power frequency component wireless transmitter 43 and power frequency component wireless receiver 44.Power frequency component sensor 41, power frequency component conditioner 42, power frequency component wireless transmitter 43 and power frequency component wireless receiver 44, be sequentially connected and connect, and the other end of power frequency component wireless receiver 44 is connected with low speed synchronous parallel data acquisition device 52.
During work, the signal that power frequency component sensor 41 detects, after power frequency component conditioner 42 processes, is sent to power frequency component wireless receiver 44 by power frequency component wireless transmitter 43, is then connected to low speed synchronous parallel data acquisition device 52；
Described collection analysis module 5 includes high-speed synchronous parallel data acquisition device 51, low speed synchronous parallel data acquisition device 52 and notebook computer 53, high-speed synchronous parallel data acquisition device 51 and low speed synchronous parallel data acquisition device 52 are arranged in same PXI frame, connected by frame data/address bus, and be connected with notebook computer 53 network interface by PCIExpress interface, notebook computer 53 is provided with the systems soft ware based on the exploitation of LabVIEW virtual instrument platform, is responsible for control, processes, analyzes and display.Described LabVIEW is a kind of programming development environment, American National instrument (NI) company develop, and LabVIEW uses graphical author language G coding, and the program of generation is the form of block diagram.
Described high-speed synchronous parallel data acquisition device 51 is using partial discharge pulse's signal itself as triggering signal, and this triggering signal exports the triggering signal input port to low speed synchronous parallel data acquisition device 52 by the signal output port that triggers of high-speed synchronous parallel data acquisition device 51 through high frequency coaxial shielded signal line locking.
The detection bandwidth of described ultrahigh-frequency signal sensor 11 is 300MHz～1500MHz, the detection bandwidth of described high-frequency signal sensor 21 is 0.5MHz～30MHz, the detection bandwidth of described ultrasonic signal sensor 31 is 20kHz～200kHz, and described power frequency component sensor 41 couples the power-frequency voltage signal of tested operational outfit.
Described notebook computer 53 is responsible for controlling, process, analyze and showing, the selection of system configuration parameter is provided for operator, the relevant parameter such as including sample rate, sampling length, activation levels, sample magnitude scope, phase alignment skew by the human-computer interaction interface of systems soft ware；In data acquisition, system shows original waveform and the data of sampling monitoring data collection state in real time；Analytic function can select the PRPD spectrum data after original waveform data or calculating as required, and is identified Analysis of Partial Discharge according to shelf depreciation determination methods and Partial Discharge Sources localization method；
Utilize this device to carry out shelf depreciation determination methods to be: after the described combined electrical apparatus partial-discharge Multi-information acquisition diagnostic equipment 1 starts normal operation, described collection analysis module 5 is by high-speed synchronous parallel data acquisition device 51, low speed synchronous parallel data acquisition device 52 is simultaneously received described ultrahigh-frequency signal sensor 11, high-frequency signal sensor 21, the ultrahigh-frequency signal of ultrasonic signal sensor 31 coupling, one or more in high-frequency current signal and ultrasonic signal, by a few class acoustoelectric signals are analyzed, exclude the interference signal, can directly judge that transformer station to be measured gas-insulated switch exists shelf depreciation.
The shelf depreciation source location mode of the described diagnostic equipment, is based on the amplitude of the multiple and super high frequency signal of this device or the time difference, superfrequency and the ultrasonic signal time difference or what the multiplex ultrasonic signal time difference positioned.The described time difference tries to achieve based on energy accumulation method, and the location of described Partial Discharge Sources includes Primary Location and is accurately positioned.
Claims (8)
1. the combined electrical apparatus partial-discharge Multi-information acquisition diagnostic equipment, it is characterised in that: ultrahigh-frequency signal modular converter (1), high-frequency signal modular converter (2), ultrasonic signal modular converter (3), power frequency component modular converter (4) are all connected with collection analysis module (5).
2. the combined electrical apparatus partial-discharge Multi-information acquisition diagnostic equipment according to claim 1, it is characterised in that: described ultrahigh-frequency signal modular converter (1) includes ultrahigh-frequency signal sensor (11), ultrahigh-frequency signal conditioner (12), ultrahigh-frequency signal wireless transmitter (13) and ultrahigh-frequency signal wireless receiver (14)；Wherein, ultrahigh-frequency signal sensor (11), ultrahigh-frequency signal conditioner (12, ultrahigh-frequency signal wireless transmitter (13) and ultrahigh-frequency signal wireless receiver (14) be sequentially connected with, the other end of ultrahigh-frequency signal wireless receiver (14) connects high-speed synchronous parallel data acquisition device (51)；
Described high-frequency signal modular converter (2) includes high-frequency signal sensor (21), high-frequency signal conditioner (22), high-frequency signal wireless transmitter (23) and high-frequency signal wireless receiver (24)；Wherein, high-frequency signal sensor (21), high-frequency signal conditioner (22), high-frequency signal wireless transmitter (23) and high-frequency signal wireless receiver (24) are sequentially connected with, and the other end of high-frequency signal wireless receiver (24) is connected with high-speed synchronous parallel data acquisition device (51)；
Described ultrasonic signal modular converter (3) includes ultrasonic signal sensor (31), ultrasonic signal conditioner (32), ultrasonic signal wireless transmitter (33) and ultrasonic signal wireless receiver (34)；Wherein, ultrasonic signal sensor (31), ultrasonic signal conditioner (32), ultrasonic signal wireless transmitter (33) and ultrasonic signal wireless receiver (34) are sequentially connected and connect, and the other end of ultrasonic signal wireless receiver (34) is connected with low speed synchronous parallel data acquisition device (52)；
Described power frequency component modular converter (4) includes power frequency component sensor (41), power frequency component conditioner (42), power frequency component wireless transmitter (43) and power frequency component wireless receiver (44)；Wherein, power frequency component sensor (41), power frequency component conditioner (42), power frequency component wireless transmitter (43) and power frequency component wireless receiver (44), being sequentially connected and connect, the other end of power frequency component wireless receiver (44) is connected with low speed synchronous parallel data acquisition device (52)；
Described collection analysis module (5) includes high-speed synchronous parallel data acquisition device (51), low speed synchronous parallel data acquisition device (52) and notebook computer (53)；Wherein, high-speed synchronous parallel data acquisition device (51) and low speed synchronous parallel data acquisition device (52) are arranged in same PXI frame, are connected by frame data/address bus, and are connected with notebook computer (53) network interface by PCIExpress interface.
3. the combined electrical apparatus partial-discharge Multi-information acquisition diagnostic equipment according to claim 2, it is characterized in that: the signal that described ultrahigh-frequency signal sensor (11) detects is after ultrahigh-frequency signal conditioner (12) processes, sent to ultrahigh-frequency signal wireless receiver (14) by ultrahigh-frequency signal wireless transmitter (13), be then connected to high-speed synchronous parallel data acquisition device (51)；
The signal that described high-frequency signal sensor (21) detects, after high-frequency signal conditioner (22) processes, is sent tremendously high frequency signal wireless receiver (24) by high-frequency signal wireless transmitter (23), is then connected to high-speed synchronous parallel data acquisition device (51)；
The signal that described ultrasonic signal sensor (31) detects, after ultrasonic signal conditioner (32) processes, is sent to ultrasonic signal wireless receiver (34) by ultrasonic signal wireless transmitter (33), is then connected to low speed synchronous parallel data acquisition device (52)；
The signal that described power frequency component sensor (41) detects, after power frequency component conditioner (42) processes, is sent to power frequency component wireless receiver (44) by power frequency component wireless transmitter (43), is then connected to low speed synchronous parallel data acquisition device (52)；
Described high-speed synchronous parallel data acquisition device (51) is using partial discharge pulse's signal itself as triggering signal, and this triggering signal exports the triggering signal input port to low speed synchronous parallel data acquisition device (52) by the triggering signal output port of high-speed synchronous parallel data acquisition device (51) through high frequency coaxial shielded signal line locking.
4. the combined electrical apparatus partial-discharge Multi-information acquisition diagnostic equipment according to claim 2, it is characterized in that: the detection bandwidth of described ultrahigh-frequency signal sensor (11) is 300MHz～1500MHz, the detection bandwidth of described high-frequency signal sensor (21) is 0.5MHz～30MHz, the detection bandwidth of described ultrasonic signal sensor (31) is 20kHz～200kHz, and described power frequency component sensor (41) couples the power-frequency voltage signal of tested operational outfit.
5. the combined electrical apparatus partial-discharge Multi-information acquisition diagnostic equipment according to claim 2, it is characterized in that: described notebook computer (53) is provided with based on LabVIEW virtual instrument platform development system, notebook computer (53) is responsible for controlling, process, analyze and showing, the selection of system configuration parameter is provided for operator, the relevant parameter such as including sample rate, sampling length, activation levels, sample magnitude scope, phase alignment skew by the human-computer interaction interface of systems soft ware；In data acquisition, system shows original waveform and the data of sampling monitoring data collection state in real time；Analytic function can select the PRPD spectrum data after original waveform data or calculating as required, and is identified Analysis of Partial Discharge according to shelf depreciation determination methods and Partial Discharge Sources localization method.
6. utilize the diagnostic method of the combined electrical apparatus partial-discharge Multi-information acquisition diagnostic equipment as claimed in claim 1, it is characterized in that: after the diagnostic equipment starts normal operation, described collection analysis module (5) is by high-speed synchronous parallel data acquisition device (51), low speed synchronous parallel data acquisition device (52) is simultaneously received described ultrahigh-frequency signal sensor (11), high-frequency signal sensor (21), the ultrahigh-frequency signal that ultrasonic signal sensor (31) and power frequency component sensor (41) couple, one or more in high-frequency current signal and ultrasonic signal, by a few class acoustoelectric signals are analyzed, exclude the interference signal, can directly judge that transformer station to be measured gas-insulated switch exists shelf depreciation.
7. utilize the diagnostic method of the combined electrical apparatus partial-discharge Multi-information acquisition diagnostic equipment as claimed in claim 6, it is characterized in that: the shelf depreciation source location mode of the described diagnostic equipment is based on the amplitude of the multiple and super high frequency signal of this device or the time difference, superfrequency and the ultrasonic signal time difference or what the multiplex ultrasonic signal time difference positioned, and the described time difference tries to achieve based on energy accumulation method.
8. utilize the diagnostic method of the combined electrical apparatus partial-discharge Multi-information acquisition diagnostic equipment as claimed in claim 7, it is characterised in that: described shelf depreciation source location includes Primary Location and is accurately positioned.
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| CN106771910A (en) * | 2016-12-09 | 2017-05-31 | 国网北京市电力公司 | The method and apparatus of the defect of detection combination electrical equipment |
| CN106771910B (en) * | 2016-12-09 | 2020-08-11 | 国网北京市电力公司 | Method and device for detecting defects of combined electrical appliance |
| CN109917237A (en) * | 2017-12-12 | 2019-06-21 | 上海莫克电子技术有限公司 | Hand-hold GIS partial discharge location instrument and partial discharge location system |
| CN109116201A (en) * | 2018-09-07 | 2019-01-01 | 国网宁夏电力有限公司电力科学研究院 | A kind of localization method and system of local discharge of electrical equipment |
| CN111751683A (en) * | 2020-07-03 | 2020-10-09 | 国网河南省电力公司检修公司 | GIS equipment partial discharge detection method |
| CN113945812A (en) * | 2021-09-28 | 2022-01-18 | 海南电网有限责任公司电力科学研究院 | Near-field space pulse radiation positioning sensor |
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Application publication date: 20160713 |