CN202256654U - Verification device of global information system (GIS) partial discharge ultrahigh frequency online monitoring device - Google Patents
Verification device of global information system (GIS) partial discharge ultrahigh frequency online monitoring device Download PDFInfo
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- CN202256654U CN202256654U CN2011204067498U CN201120406749U CN202256654U CN 202256654 U CN202256654 U CN 202256654U CN 2011204067498 U CN2011204067498 U CN 2011204067498U CN 201120406749 U CN201120406749 U CN 201120406749U CN 202256654 U CN202256654 U CN 202256654U
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 47
- 238000012795 verification Methods 0.000 title abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000005670 electromagnetic radiation Effects 0.000 claims description 13
- 239000012212 insulator Substances 0.000 claims description 4
- 230000008859 change Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 8
- 238000005259 measurement Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The embodiment of the utility model discloses a verification device of a global information system (GIS) partial discharge ultrahigh frequency online monitoring device, which comprises a standard discharge source, a waveguide coupler, a high frequency sensor and an automatic calibration device. The standard discharge source is respectively and electrically connected with the waveguide coupler and the automatic calibration device, and the waveguide coupler is electrically connected with the high frequency sensor electrically connected with the automatic verification device. The verification device of the GIS partial discharge ultrahigh frequency online monitoring device does not change an electric GIS structure, is convenient to install and strong in anti-electromagnetic interference capability and provides an effective method for electrified verification of the GIS partial discharge ultrahigh frequency online monitoring device.
Description
Technical Field
The utility model relates to an electrical equipment on-line monitoring technical field especially relates to a GIS (gas insulated sub-station), partial discharge ultrahigh frequency on-line monitoring device examination appearance.
Background
Partial discharge is a discharge phenomenon in a local area in an electric GIS insulation structure, the discharge is only that insulation is broken down in a local range, and the insulation between conductors is not broken down in a penetrating way. However, if partial discharge exists for a long time, the GIS insulation can be damaged. Therefore, in order to ensure the reliability of the GIS in operation, it is generally necessary to avoid partial discharges in the insulating medium as much as possible or to allow only slight partial discharges. The online monitoring of partial discharge is helpful for finding various defects in the GIS, so that the online monitoring of partial discharge is an important diagnosis means for the health state of the GIS. However, the traditional pulse current method is difficult to implement due to the influence of GIS structure and environment interference. The operation experience shows that the GIS partial discharge monitoring is carried out by using the ultrahigh frequency online monitoring device, which is a very effective monitoring means.
Therefore, in view of the importance of the GIS partial discharge ultrahigh frequency online monitoring device, how to implement the live-line detection of the sensitivity and the effectiveness of the GIS partial discharge ultrahigh frequency online monitoring device is an important issue in the field.
SUMMERY OF THE UTILITY MODEL
The utility model discloses main aim at provides a GIS partial discharge superfrequency monitoring devices's examination appearance to can't carry out the problem of electrified examination to GIS partial discharge superfrequency on-line monitoring devices among the solution prior art.
The utility model provides a GIS partial discharge ultrahigh frequency online monitoring device calibrating instrument, which is coupled with the GIS partial discharge ultrahigh frequency online monitoring device; the calibrating instrument comprises a standard discharge source, a waveguide coupler, a high-frequency sensor and an automatic calibration device; the standard discharge source is respectively electrically connected with the waveguide coupler and the automatic checking device, the waveguide coupler is electrically connected with the high-frequency sensor, and the high-frequency sensor is electrically connected with the automatic checking device; the standard discharge source is used for generating a discharge pulse current signal and an ultrahigh frequency electromagnetic radiation signal, and the discharge pulse current signal generates a pulse current measuring signal by a pulse current method; the waveguide coupler is coupled and connected with the standard discharge source, couples the ultrahigh frequency electromagnetic radiation signal into the GIS pipeline and simulates local discharge inside the GIS; the GIS partial discharge ultrahigh frequency online monitoring device generates a monitoring device measuring signal according to the ultrahigh frequency electromagnetic radiation signal; the high-frequency sensor is arranged on a grounding wire of the GIS and transmits a measuring signal of the monitoring device to the automatic checking device; and the automatic checking device compares the measuring signal of the monitoring device with the measuring signal of the pulse current to generate a checking result.
Preferably, the standard discharge source comprises an alternating current high-voltage power supply and an SF6 closed gas chamber, and the alternating current high-voltage power supply is connected with the SF6 closed gas chamber; and by adjusting the voltage amplitude of the alternating-current high-voltage power supply, discharge is generated in the SF6 gas gap, and partial discharge inside the GIS is simulated.
Preferably, the waveguide coupler couples the uhf electromagnetic radiation signal into the GIS pipe via an unshielded basin/disk insulator, a dielectric observation window, or a dedicated open hand hole of the GIS.
Preferably, the waveguide coupler is disposed within the GIS conduit.
Preferably, the standard discharge source is electrically connected to the automatic calibration device and is used for providing a power supply for the automatic calibration device.
The utility model discloses GIS partial discharge superfrequency on-line monitoring device examination appearance does not change electric power GIS's structure, simple to operate, and anti-electromagnetic interference ability is strong, provides an effectual method for GIS partial discharge superfrequency on-line monitoring device's electrified examination.
Drawings
In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a calibrating apparatus for a GIS partial discharge ultrahigh frequency online monitoring device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an electric GIS according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of the coupling connection between the calibrating apparatus of the GIS partial discharge ultrahigh frequency online monitoring device of the embodiment of the present invention and the GIS shown in fig. 2;
fig. 4 is a schematic diagram of a controllable SF6 gas gap standard discharge source of a verification instrument of a GIS partial discharge ultrahigh frequency monitoring device according to an embodiment of the present invention;
fig. 5 is the utility model discloses GIS partial discharge ultrahigh frequency monitoring devices examination appearance's automatic check device's electric connection schematic diagram.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Fig. 1 is the utility model discloses GIS partial discharge superfrequency on-line monitoring device examination appearance's schematic structure. As shown in the figure, the utility model discloses GIS partial discharge superfrequency on-line monitoring device examination appearance includes standard discharge source 101, waveguide coupler 102, high frequency sensor 103 and automatic check-up device 104. The standard discharge source 101 is electrically connected to the waveguide coupler 102 and the automatic verification device 104, respectively, the waveguide coupler 102 is electrically connected to the high-frequency sensor 103, and the high-frequency sensor 103 is electrically connected to the automatic verification device 104.
Fig. 2 is a schematic structural diagram of an electric GIS according to an embodiment of the present invention; fig. 3 is the utility model discloses carry out coupling connection's schematic structure with GIS partial discharge superfrequency on-line monitoring device examination appearance and the GIS shown in fig. 2. As shown in fig. 2 and 3, the waveguide coupler 102 can couple the high frequency electromagnetic radiation signal into the GIS pipe interior via unshielded basin/disk insulators, dielectric windows, or dedicated open hand holes of the GIS shown in fig. 1. The embodiment shown in fig. 3 is implemented by using a non-shielding disc insulator of the GIS to couple the high-frequency electromagnetic radiation signal generated by the standard discharge source 101 into the GIS pipeline.
In this embodiment, the standard discharge source 101 is configured to generate a discharge pulse current signal and an ultrahigh frequency electromagnetic radiation signal, the discharge pulse current signal generates a pulse current measurement signal by a pulse current method, and the pulse current measurement signal is transmitted to a GIS partial discharge automatic calibration module, that is, the automatic calibration device 104. In the present embodiment, a capacitor having the same capacitance as the monitored GIS device is used as a partial discharge source coupling capacitor to determine the apparent discharge amount.
The waveguide coupler 102 is arranged inside the GIS, is coupled and connected with the standard discharge source 101, couples the ultrahigh-frequency electromagnetic radiation signal generated by the standard discharge source 101 into the GIS pipeline, and simulates local discharge inside the GIS; the GIS partial discharge ultrahigh frequency online monitoring device can generate a monitoring device measuring signal according to the ultrahigh frequency electromagnetic radiation signal.
In this embodiment, the high frequency sensor 103 is disposed on the ground wire of the GIS, and transmits the measurement signal of the monitoring device to the automatic calibration device 104.
The automatic verification device 104 compares the pulse current measurement signal generated by the pulse current method with the monitoring device measurement signal acquired from the high-frequency sensor 103, and generates a verification result. If the two signals are identical or almost identical, the effectiveness and the sensitivity of the GIS partial discharge ultrahigh frequency online monitoring device are proved to be higher. Otherwise, the effectiveness and the sensitivity of the GIS partial discharge ultrahigh frequency online monitoring device are proved to be lower.
Fig. 4 is the schematic diagram of the controllable SF6 gas gap standard discharge source of the verification instrument for the GIS partial discharge ultrahigh frequency monitoring device of the embodiment of the present invention. As shown, the standard discharge source comprises an alternating current high-voltage power supply and an SF6 closed gas chamber, wherein the alternating current high-voltage power supply is connected with the SF6 closed gas chamber; by adjusting the voltage amplitude of the alternating-current high-voltage power supply, discharge is generated in the SF6 gas gap, and partial discharge inside the GIS can be simulated.
Fig. 5 is the utility model discloses the electric connection schematic diagram of the automatic check device of GIS partial discharge superfrequency monitoring devices examination appearance, wherein, it can be hardware, chip etc. for the automatic check device. The automatic calibration device is electrically connected to the alternating current high-voltage power supply of the standard discharge source and serves as power supply equipment of the automatic calibration device. In addition, the automatic checking device obtains a pulse current measuring signal generated by a pulse current method and a monitoring device measuring signal obtained from the high-frequency sensor, and generates a checking result of the GIS partial discharge ultrahigh-frequency online detection device.
The utility model discloses GIS partial discharge superfrequency on-line monitoring device examination appearance does not change electric power GIS's structure, simple to operate, and anti-electromagnetic interference ability is strong, provides an effectual method for GIS partial discharge superfrequency on-line monitoring device's electrified examination.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. A GIS partial discharge ultrahigh frequency online monitoring device calibration instrument is characterized in that the calibration instrument is coupled with a GIS partial discharge ultrahigh frequency online monitoring device; the calibrating instrument comprises a standard discharge source, a waveguide coupler, a high-frequency sensor and an automatic calibration device; wherein,
the standard discharge source is respectively electrically connected with the waveguide coupler and the automatic checking device, the waveguide coupler is electrically connected with the high-frequency sensor, and the high-frequency sensor is electrically connected with the automatic checking device;
the standard discharge source is used for generating a discharge pulse current signal and an ultrahigh frequency electromagnetic radiation signal, and the discharge pulse current signal generates a pulse current measuring signal by a pulse current method;
the waveguide coupler is coupled and connected with the standard discharge source, couples the ultrahigh frequency electromagnetic radiation signal into the GIS pipeline and simulates local discharge inside the GIS; the GIS partial discharge ultrahigh frequency online monitoring device generates a monitoring device measuring signal according to the ultrahigh frequency electromagnetic radiation signal;
the high-frequency sensor is arranged on a grounding wire of the GIS and transmits a measuring signal of the monitoring device to the automatic checking device;
and the automatic checking device compares the measuring signal of the monitoring device with the measuring signal of the pulse current to generate a checking result.
2. The GIS partial discharge ultrahigh frequency online monitoring device calibrator according to claim 1, wherein said standard discharge source comprises: the high-voltage AC power supply is connected with the SF6 closed gas chamber; and by adjusting the voltage amplitude of the alternating-current high-voltage power supply, discharge is generated in the SF6 gas gap, and partial discharge inside the GIS is simulated.
3. The GIS partial discharge uhf on-line monitoring device calibrator as claimed in claim 1, wherein said waveguide coupler couples said uhf electromagnetic radiation signal into the inside of said GIS pipeline through unshielded basin/disk insulator, dielectric observation window or dedicated open hand hole of said GIS.
4. The GIS partial discharge ultrahigh frequency online monitoring device calibrator according to claim 1, wherein the waveguide coupler is disposed inside the GIS pipeline.
5. The GIS partial discharge ultrahigh frequency online monitoring device calibrator according to claim 1, wherein the standard discharge source is electrically connected to the automatic calibration device for supplying power to the automatic calibration device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011204067498U CN202256654U (en) | 2011-10-21 | 2011-10-21 | Verification device of global information system (GIS) partial discharge ultrahigh frequency online monitoring device |
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| CN2011204067498U CN202256654U (en) | 2011-10-21 | 2011-10-21 | Verification device of global information system (GIS) partial discharge ultrahigh frequency online monitoring device |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091609A (en) * | 2013-01-09 | 2013-05-08 | 中国电力科学研究院 | Performance detecting system and method thereof of gas insulated substation (GIS) partial discharge on-line monitoring device |
| CN103176157A (en) * | 2013-02-07 | 2013-06-26 | 广东电网公司电力科学研究院 | Method for checking detection range of GIS (gas insulated switchgear) partial discharge UHF (ultra high frequency) external sensors |
| CN103176158A (en) * | 2013-02-07 | 2013-06-26 | 广东电网公司电力科学研究院 | UHF (ultrahigh frequency) detection signal injection method and device for GIS (gas insulated switchgear) partial discharge |
| CN103278787A (en) * | 2013-03-29 | 2013-09-04 | 国家电网公司 | On-line GIS (gas-insulated switchgear) partial discharge monitoring and check method |
| CN103293501A (en) * | 2012-10-31 | 2013-09-11 | 天津市电力公司 | Verifying unit for switchgear insulated detector |
| CN103308876A (en) * | 2013-05-08 | 2013-09-18 | 清华大学 | Inspection method for performance of partial discharge ultrahigh frequency detection system of gas insulated substation |
| CN103336259A (en) * | 2013-07-17 | 2013-10-02 | 国家电网公司 | Detecting system and method for partial discharge detecting sensor of GIS (gas insulated switchgear) |
| CN103941209A (en) * | 2014-04-13 | 2014-07-23 | 北京工业大学 | Checking method based on vibration positioning GIS partial discharge equipment |
| CN104459375A (en) * | 2014-11-12 | 2015-03-25 | 华北电力大学 | Method for identifying transient electromagnetic disturbance of secondary device of gas insulation substation |
| CN104749500A (en) * | 2015-02-28 | 2015-07-01 | 平高集团有限公司 | GIS apparatus with discharge observation window |
| CN105891761A (en) * | 2016-06-21 | 2016-08-24 | 国网福建省电力有限公司 | Scattering parameter-based partial discharge ultrahigh frequency detection system field check method |
| CN106291266A (en) * | 2015-05-25 | 2017-01-04 | 国家电网公司 | A kind of shelf depreciation In-circiut tester |
| CN107561475A (en) * | 2017-10-24 | 2018-01-09 | 广州供电局有限公司 | High Frequency Current Sensor frequency band quantifies method of calibration, system and device |
-
2011
- 2011-10-21 CN CN2011204067498U patent/CN202256654U/en not_active Expired - Lifetime
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293501A (en) * | 2012-10-31 | 2013-09-11 | 天津市电力公司 | Verifying unit for switchgear insulated detector |
| CN103293501B (en) * | 2012-10-31 | 2015-10-28 | 天津市电力公司 | A kind of calibration equipment for switchgear insulation tester |
| CN103091609A (en) * | 2013-01-09 | 2013-05-08 | 中国电力科学研究院 | Performance detecting system and method thereof of gas insulated substation (GIS) partial discharge on-line monitoring device |
| CN103091609B (en) * | 2013-01-09 | 2016-05-18 | 中国电力科学研究院 | A kind of GIS local discharge on-line monitoring device performance detecting system and method thereof |
| CN103176157A (en) * | 2013-02-07 | 2013-06-26 | 广东电网公司电力科学研究院 | Method for checking detection range of GIS (gas insulated switchgear) partial discharge UHF (ultra high frequency) external sensors |
| CN103176158A (en) * | 2013-02-07 | 2013-06-26 | 广东电网公司电力科学研究院 | UHF (ultrahigh frequency) detection signal injection method and device for GIS (gas insulated switchgear) partial discharge |
| CN103278787A (en) * | 2013-03-29 | 2013-09-04 | 国家电网公司 | On-line GIS (gas-insulated switchgear) partial discharge monitoring and check method |
| CN103308876B (en) * | 2013-05-08 | 2015-04-15 | 清华大学 | Inspection method for performance of partial discharge ultrahigh frequency detection system of gas insulated substation |
| CN103308876A (en) * | 2013-05-08 | 2013-09-18 | 清华大学 | Inspection method for performance of partial discharge ultrahigh frequency detection system of gas insulated substation |
| CN103336259B (en) * | 2013-07-17 | 2016-08-31 | 国家电网公司 | The detecting system of local discharge of gas-insulator switchgear detection sensor and method |
| CN103336259A (en) * | 2013-07-17 | 2013-10-02 | 国家电网公司 | Detecting system and method for partial discharge detecting sensor of GIS (gas insulated switchgear) |
| CN103941209A (en) * | 2014-04-13 | 2014-07-23 | 北京工业大学 | Checking method based on vibration positioning GIS partial discharge equipment |
| CN103941209B (en) * | 2014-04-13 | 2016-08-17 | 北京工业大学 | A kind of check method based on vibration location GIS partial discharge equipment |
| CN104459375A (en) * | 2014-11-12 | 2015-03-25 | 华北电力大学 | Method for identifying transient electromagnetic disturbance of secondary device of gas insulation substation |
| CN104459375B (en) * | 2014-11-12 | 2017-11-28 | 华北电力大学 | The recognition methods of Transient Electromagnetic harassing and wrecking occurs for gas insulated transformer substation secondary device |
| CN104749500A (en) * | 2015-02-28 | 2015-07-01 | 平高集团有限公司 | GIS apparatus with discharge observation window |
| CN104749500B (en) * | 2015-02-28 | 2018-03-02 | 平高集团有限公司 | A kind of GIS device with electric discharge observation window |
| CN106291266A (en) * | 2015-05-25 | 2017-01-04 | 国家电网公司 | A kind of shelf depreciation In-circiut tester |
| CN105891761A (en) * | 2016-06-21 | 2016-08-24 | 国网福建省电力有限公司 | Scattering parameter-based partial discharge ultrahigh frequency detection system field check method |
| CN107561475A (en) * | 2017-10-24 | 2018-01-09 | 广州供电局有限公司 | High Frequency Current Sensor frequency band quantifies method of calibration, system and device |
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