CN105467287A - GIS (Gas Insulated Switchgear) partial discharge automatic positioning device based on ultra-high frequency detection technology - Google Patents
GIS (Gas Insulated Switchgear) partial discharge automatic positioning device based on ultra-high frequency detection technology Download PDFInfo
- Publication number
- CN105467287A CN105467287A CN201610007888.0A CN201610007888A CN105467287A CN 105467287 A CN105467287 A CN 105467287A CN 201610007888 A CN201610007888 A CN 201610007888A CN 105467287 A CN105467287 A CN 105467287A
- Authority
- CN
- China
- Prior art keywords
- partial discharge
- sensors
- ultra high
- gis
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 238000005516 engineering process Methods 0.000 title abstract description 4
- 238000000034 method Methods 0.000 claims description 12
- 230000008054 signal transmission Effects 0.000 claims description 5
- 240000007594 Oryza sativa Species 0.000 claims description 3
- 235000007164 Oryza sativa Nutrition 0.000 claims description 3
- 229910018503 SF6 Inorganic materials 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 235000009566 rice Nutrition 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 claims description 3
- 229960000909 sulfur hexafluoride Drugs 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 244000141353 Prunus domestica Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012502 risk assessment Methods 0.000 description 1
Classifications
-
- 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
Abstract
The invention discloses a GIS (Gas Insulated Switchgear) partial discharge automatic positioning device based on ultra-high frequency detection technology, which belongs to the technical field of ultra-high frequency partial discharge positioning for the GIS in a power system and has the advantages of convenient use, high positioning precision and high efficiency. The device comprises an ultra-high frequency partial discharge sensor, a low attenuation coaxial cable, a data acquisition unit and a background industrial control machine, and is structurally characterized in that the signal output port of the ultra-high frequency partial discharge sensor is connected with the signal input port of the data acquisition unit via the low attenuation coaxial cable; and the signal output port of the data acquisition unit is connected with the signal input port of the background industrial control machine.
Description
Technical field
The invention belongs to electric system GIS gas-insulated switchgear superfrequency shelf depreciation field of locating technology, particularly relate to a kind of GIS partial discharge automatic positioning equipment based on superfrequency detection technique.
Background technology
In recent years, the important means that superfrequency shelf depreciation live detection has become assessment apparatus insulating property is carried out to GIS gas-insulated switchgear high-tension apparatus, but only detects that the existence of local discharge signal is far from being enough for risk assessment and guided maintenance.Accurately locating Partial Discharge Sources, is the requisite step of overhaul of the equipments.
At present, conventional GIS ultrahigh frequency Partial discharge detector does not all possess shelf depreciation positioning function, and user only can determine the position of Partial Discharge Sources according to " amplitude relative method ".This localization method may cause full of prunes conclusion, and reason is: GIS is inner is not only " distance " on the impact of local discharge signal transmission attenuation, and the impact of GIS structure on the local discharge signal transmission attenuation of its inside is more important.For different structures, the signal that the near sensor of distance Partial Discharge Sources may be made to receive is less.
Another one more accurately method is exactly adopt high speed acquisition oscillograph to calculate the mistiming that Partial Discharge Sources arrives two ultra high-frequency partial discharge sensors, and then calculate the position of Partial Discharge Sources, but this method needs personnel's substantial length of operation oscillograph, looks for the position of the reference position of pulse and calculating Partial Discharge Sources, but this locator meams, need to carry out statistical computation to a large amount of data, just can draw shelf depreciation source position more accurately.For intermittent local discharge signal, operating personnel need wait for the appearance of discharge signal at the scene, just can carry out the location of shelf depreciation source position.
Summary of the invention
The present invention is exactly for the problems referred to above, provides a kind of easy to use, positioning precision is high, efficiency is high GIS partial discharge automatic positioning equipment based on superfrequency detection technique.
For achieving the above object, the present invention adopts following technical scheme, the present invention includes ultra high-frequency partial discharge sensor, low decay concentric cable, data acquisition unit and backstage industrial computer, the signal output port of its structural feature ultra high-frequency partial discharge sensor is connected with the signal input port of data acquisition unit by low decay concentric cable, and the signal output port of data acquisition unit is connected with the signal input port of backstage industrial computer.
Described ultra high-frequency partial discharge sensor received radiation is to the frequency electromagnetic waves of GIS inside, after the analog to digital conversion of data acquisition unit, by data through Optical Fiber Transmission to backstage industrial computer, the time pulse signal that backstage any two ultra high-frequency partial discharge sensors of industrial computer calculating receive is poor, by the statistics to several times positioning result, demonstrate the distance of Partial Discharge Sources from two ultra high-frequency partial discharge sensors.
As a kind of preferred version, ultra high-frequency partial discharge sensor of the present invention adopts Hz-KHz to be the ultra high-frequency partial discharge sensor of 300 ~ 1500MHz.
As another kind of preferred version, digital collection unit of the present invention is made up of 300 ~ 1500MHz bandpass filter, logarithmic amplifier and digital collection channel card, and the sampling rate of digital collection channel card is 100MS/s.
As another kind of preferred version, each ultra high-frequency partial discharge sensor is connected to digital collection unit by isometric 20 meters of concentric cable by the present invention.
As another kind of preferred version, the method for location of the present invention comprises the following steps.
1) synchronous signal acquisition is carried out to ultrahigh frequency partial discharge signal.
2) the signal initial pulse of ultra high-frequency partial discharge sensor collection is determined.
3) position of Partial Discharge Sources is calculated according to the mistiming between two sensors.
4) in acquisition time, carry out local discharge signal according to two sensor collections, calculate the pulse of all collections, the number of times-range distribution figure of statistics Partial Discharge Sources between two sensors, draws the distribution plan that Partial Discharge Sources is adjusted the distance.
As another kind of preferred version, the Partial Discharge Sources that demonstrates of the present invention from the method for the distance of two ultra high-frequency partial discharge sensors is: select two sensors shelf depreciation being detected, obtains the distance of Partial Discharge Sources from two ultra high-frequency partial discharge sensors by the ratio of velocity of wave in sulfur hexafluoride gas of the distance of these two sensors, pulse and the light velocity.
As another kind of preferred version, low attenuation concentric cable of the present invention adopts the low attenuation concentric cable decaying to 0.13dB/ rice at 1GHz frequency.
Secondly, step 3) of the present invention calculates the position of Partial Discharge Sources computing method according to the mistiming between two sensors are: when the spacing of known two sensors, when Partial Discharge Sources is positioned at outside two sensors, poor corresponding signal transmission distance time of arrival of two sensors equals the spacing of two sensors; When Partial Discharge Sources is between two sensors, difference time of arrival of two signals is less than the spacing of two sensors, namely calculates by following formula the distance that Partial Discharge Sources arrives nearlyer sensor;
D is the distance between two ultra high-frequency partial discharge sensors.
D is the distance of Partial Discharge Sources to nearest superfrequency sensor.
T is the mistiming that local discharge signal arrives between two superfrequency sensors.
In addition, ultra high-frequency partial discharge sensor of the present invention, low decay concentric cable, data acquisition unit and backstage industrial computer are arranged in Mobile cabinet.
Beneficial effect of the present invention.
The present invention, by the Real-time Collection of local discharge signal and process, realizes the automatic location of shelf depreciation source position in GIS.
The present invention by ultra high-frequency partial discharge sensor, low decay concentric cable, data acquisition unit and backstage industrial computer with the use of, easy to use, positioning precision is high, positioning result can intuitively show; Also overcome simultaneously and needed manual site to locate and the difficulty such as the difficult seizure of intermittent local discharge signal in the past.
Apparatus of the present invention can be used for the detection of shelf depreciation in GIS gas-insulated switch and automatically locate.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.Scope is not only confined to the statement of following content.
Fig. 1 is the GIS partial discharge automatic positioning equipment schematic diagram that the present invention is based on superfrequency detection technique.
Fig. 2 is two ultra high-frequency partial discharge sensor location Partial Discharge Sources principle schematic.
The local discharge signal PRPD collection of illustrative plates that Fig. 3 arrives for adopted three Air conduct measurement.
Fig. 4 determines figure in the shelf depreciation initial pulse moment.
Fig. 5 calculates and adds up the Partial Discharge Sources result figure navigated to.
Fig. 6 is schematic block circuit diagram of the present invention.
In Fig. 1,1 be Mobile cabinet, 2 be ultra high-frequency partial discharge sensor, 3 for low decay concentric cable.
Embodiment
As shown in the figure, the present invention includes ultra high-frequency partial discharge sensor, low decay concentric cable, data acquisition unit and backstage industrial computer, the signal output port of its structural feature ultra high-frequency partial discharge sensor is connected with the signal input port of data acquisition unit by low decay concentric cable, and the signal output port of data acquisition unit is connected with the signal input port of backstage industrial computer.
Described ultra high-frequency partial discharge sensor received radiation is to the frequency electromagnetic waves of GIS inside, after the analog to digital conversion of data acquisition unit, by data through Optical Fiber Transmission to backstage industrial computer, the time pulse signal that backstage any two ultra high-frequency partial discharge sensors of industrial computer calculating receive is poor, by the statistics to several times positioning result, demonstrate the distance of Partial Discharge Sources from two ultra high-frequency partial discharge sensors.
Described ultra high-frequency partial discharge sensor adopts Hz-KHz to be the ultra high-frequency partial discharge sensor of 300 ~ 1500MHz.
Described digital collection unit is made up of 300 ~ 1500MHz bandpass filter, logarithmic amplifier and digital collection channel card, and the sampling rate of digital collection channel card is 100MS/s.The digital collection unit possessing automatic Trigger Function can be adopted, automatically detect and determine the wave head of acquisition pulse signal initial pulse.
By isometric 20 meters of concentric cable, each ultra high-frequency partial discharge sensor is connected to digital collection unit.
The method of described location comprises the following steps.
1) synchronous signal acquisition is carried out to ultrahigh frequency partial discharge signal.
2) the signal initial pulse of ultra high-frequency partial discharge sensor collection is determined.
3) position of Partial Discharge Sources is calculated according to the mistiming between two sensors.
4) in acquisition time, carry out local discharge signal according to two sensor collections, calculate the pulse of all collections, the number of times-range distribution figure of statistics Partial Discharge Sources between two sensors, draws the distribution plan that Partial Discharge Sources is adjusted the distance.
The described Partial Discharge Sources that demonstrates from the method for the distance of two ultra high-frequency partial discharge sensors is: select two sensors shelf depreciation being detected, obtains the distance of Partial Discharge Sources from two ultra high-frequency partial discharge sensors by the ratio of velocity of wave in sulfur hexafluoride gas of the distance of these two sensors, pulse and the light velocity.
Described low attenuation concentric cable adopts the low attenuation concentric cable decaying to 0.13dB/ rice at 1GHz frequency.
Described step 3) calculates the position of Partial Discharge Sources computing method according to the mistiming between two sensors are: when the spacing of known two sensors, when Partial Discharge Sources is positioned at outside two sensors, poor corresponding signal transmission distance time of arrival of two sensors equals the spacing of two sensors; When Partial Discharge Sources is between two sensors, difference time of arrival of two signals is less than the spacing of two sensors, namely calculates by following formula the distance that Partial Discharge Sources arrives nearlyer sensor;
D is the distance between two ultra high-frequency partial discharge sensors.
D is the distance of Partial Discharge Sources to nearest superfrequency sensor.
T is the mistiming that local discharge signal arrives between two superfrequency sensors.
Described ultra high-frequency partial discharge sensor, low decay concentric cable, data acquisition unit and backstage industrial computer are arranged in Mobile cabinet; Also the indoor rack in transformer station can be fixed on.
Be understandable that, above about specific descriptions of the present invention, the technical scheme described by the embodiment of the present invention is only not limited to for illustration of the present invention, those of ordinary skill in the art is to be understood that, still can modify to the present invention or equivalent replacement, to reach identical technique effect; Needs are used, all within protection scope of the present invention as long as meet.
Claims (9)
1. based on the GIS partial discharge automatic positioning equipment of superfrequency detection technique, comprise ultra high-frequency partial discharge sensor, low decay concentric cable, data acquisition unit and backstage industrial computer, it is characterized in that the signal output port of ultra high-frequency partial discharge sensor is connected with the signal input port of data acquisition unit by low decay concentric cable, the signal output port of data acquisition unit is connected with the signal input port of backstage industrial computer;
Described ultra high-frequency partial discharge sensor received radiation is to the frequency electromagnetic waves of GIS inside, after the analog to digital conversion of data acquisition unit, by data through Optical Fiber Transmission to backstage industrial computer, the time pulse signal that backstage any two ultra high-frequency partial discharge sensors of industrial computer calculating receive is poor, by the statistics to several times positioning result, demonstrate the distance of Partial Discharge Sources from two ultra high-frequency partial discharge sensors.
2., according to claim 1 based on the GIS partial discharge automatic positioning equipment of superfrequency detection technique, it is characterized in that described ultra high-frequency partial discharge sensor adopts Hz-KHz to be the ultra high-frequency partial discharge sensor of 300 ~ 1500MHz.
3. according to claim 2 based on the GIS partial discharge automatic positioning equipment of superfrequency detection technique, it is characterized in that described digital collection unit is made up of 300 ~ 1500MHz bandpass filter, logarithmic amplifier and digital collection channel card, the sampling rate of digital collection channel card is 100MS/s.
4., according to claim 3 based on the GIS partial discharge automatic positioning equipment of superfrequency detection technique, it is characterized in that, by isometric 20 meters of concentric cable, each ultra high-frequency partial discharge sensor is connected to digital collection unit.
5., according to claim 4 based on the GIS partial discharge automatic positioning equipment of superfrequency detection technique, it is characterized in that the method for described location comprises the following steps:
1) synchronous signal acquisition is carried out to ultrahigh frequency partial discharge signal;
2) the signal initial pulse of ultra high-frequency partial discharge sensor collection is determined;
3) position of Partial Discharge Sources is calculated according to the mistiming between two sensors;
4) in acquisition time, carry out local discharge signal according to two sensor collections, calculate the pulse of all collections, the number of times-range distribution figure of statistics Partial Discharge Sources between two sensors, draws the distribution plan that Partial Discharge Sources is adjusted the distance.
6. according to claim 5 based on the GIS partial discharge automatic positioning equipment of superfrequency detection technique, demonstrating Partial Discharge Sources described in it is characterized in that from the method for the distance of two ultra high-frequency partial discharge sensors is: select two sensors shelf depreciation being detected, obtains the distance of Partial Discharge Sources from two ultra high-frequency partial discharge sensors by the ratio of velocity of wave in sulfur hexafluoride gas of the distance of these two sensors, pulse and the light velocity.
7., according to claim 6 based on the GIS partial discharge automatic positioning equipment of superfrequency detection technique, it is characterized in that described low attenuation concentric cable adopts the low attenuation concentric cable decaying to 0.13dB/ rice at 1GHz frequency.
8. according to claim 7 based on the GIS partial discharge automatic positioning equipment of superfrequency detection technique, it is characterized in that described step 3) according to the computing method of the position of the mistiming calculating Partial Discharge Sources between two sensors is: when the spacing of known two sensors, when Partial Discharge Sources is positioned at outside two sensors, poor corresponding signal transmission distance time of arrival of two sensors equals the spacing of two sensors; When Partial Discharge Sources is between two sensors, difference time of arrival of two signals is less than the spacing of two sensors, namely calculates by following formula the distance that Partial Discharge Sources arrives nearlyer sensor;
D is the distance between two ultra high-frequency partial discharge sensors;
D is the distance of Partial Discharge Sources to nearest superfrequency sensor;
T is the mistiming that local discharge signal arrives between two superfrequency sensors.
9., according to claim 8 based on the GIS partial discharge automatic positioning equipment of superfrequency detection technique, it is characterized in that described ultra high-frequency partial discharge sensor, low decay concentric cable, data acquisition unit and backstage industrial computer are arranged in Mobile cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610007888.0A CN105467287A (en) | 2016-01-08 | 2016-01-08 | GIS (Gas Insulated Switchgear) partial discharge automatic positioning device based on ultra-high frequency detection technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610007888.0A CN105467287A (en) | 2016-01-08 | 2016-01-08 | GIS (Gas Insulated Switchgear) partial discharge automatic positioning device based on ultra-high frequency detection technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105467287A true CN105467287A (en) | 2016-04-06 |
Family
ID=55605203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610007888.0A Pending CN105467287A (en) | 2016-01-08 | 2016-01-08 | GIS (Gas Insulated Switchgear) partial discharge automatic positioning device based on ultra-high frequency detection technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105467287A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974276A (en) * | 2016-04-25 | 2016-09-28 | 西安交通大学 | GIS interval delivery withstand voltage test breakdown point locating method |
| CN106093728A (en) * | 2016-07-22 | 2016-11-09 | 上海波汇科技股份有限公司 | A kind of partial discharge location instrument |
| CN106569105A (en) * | 2016-10-31 | 2017-04-19 | 国家电网公司 | GIS partial discharge optical ultrahigh frequency combined detection method |
| CN107102244A (en) * | 2017-05-25 | 2017-08-29 | 国网浙江省电力公司电力科学研究院 | A kind of discharge source localization method of GIS ultrahigh frequency local discharge on-line monitoring device |
| CN109490728A (en) * | 2018-11-30 | 2019-03-19 | 合肥工业大学 | A kind of substation's partial discharge positioning method based on regularization |
| CN113406454A (en) * | 2021-06-30 | 2021-09-17 | 平顶山学院 | Partial discharge live inspection system and method suitable for open-type transformer substation |
| CN114325250A (en) * | 2021-11-16 | 2022-04-12 | 国网天津市电力公司电力科学研究院 | Partial discharge detection device and method integrating positioning detection and map detection functions |
| CN114689998A (en) * | 2022-02-22 | 2022-07-01 | 上海格鲁布科技有限公司 | Portable dial partial discharge detection device, system and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6255808B1 (en) * | 1997-07-31 | 2001-07-03 | Siemens Aktiengesellschaft | Device for measuring partial discharge in gas-insulated high voltage facilities, the device having a HF sensor and UHF sensor |
| CN103823164A (en) * | 2014-01-15 | 2014-05-28 | 云南电力试验研究院（集团）有限公司电力研究院 | Ultra-high frequency non-contact partial discharge positioning detecting device and positioning algorithm |
| CN103884956A (en) * | 2014-03-25 | 2014-06-25 | 上海局放软件技术有限公司 | Device and method for positioning partial discharge of high-voltage equipment through oscilloscope |
| CN103913677A (en) * | 2013-01-07 | 2014-07-09 | 国家电网公司 | Method and system for locating partial discharge source |
-
2016
- 2016-01-08 CN CN201610007888.0A patent/CN105467287A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6255808B1 (en) * | 1997-07-31 | 2001-07-03 | Siemens Aktiengesellschaft | Device for measuring partial discharge in gas-insulated high voltage facilities, the device having a HF sensor and UHF sensor |
| CN103913677A (en) * | 2013-01-07 | 2014-07-09 | 国家电网公司 | Method and system for locating partial discharge source |
| CN103823164A (en) * | 2014-01-15 | 2014-05-28 | 云南电力试验研究院（集团）有限公司电力研究院 | Ultra-high frequency non-contact partial discharge positioning detecting device and positioning algorithm |
| CN103884956A (en) * | 2014-03-25 | 2014-06-25 | 上海局放软件技术有限公司 | Device and method for positioning partial discharge of high-voltage equipment through oscilloscope |
Non-Patent Citations (1)
| Title |
|---|
| 李晓峰，等: ""特高频局部放电检测技术在GIS设备上的典型应用"", 《高压电器》 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974276A (en) * | 2016-04-25 | 2016-09-28 | 西安交通大学 | GIS interval delivery withstand voltage test breakdown point locating method |
| CN106093728A (en) * | 2016-07-22 | 2016-11-09 | 上海波汇科技股份有限公司 | A kind of partial discharge location instrument |
| CN106569105B (en) * | 2016-10-31 | 2019-07-26 | 国家电网公司 | A kind of GIS partial discharge optics superfrequency associated detecting method |
| CN106569105A (en) * | 2016-10-31 | 2017-04-19 | 国家电网公司 | GIS partial discharge optical ultrahigh frequency combined detection method |
| CN107102244B (en) * | 2017-05-25 | 2019-11-22 | 国网浙江省电力有限公司电力科学研究院 | A kind of discharge source localization method of GIS ultrahigh frequency local discharge on-line monitoring device |
| CN107102244A (en) * | 2017-05-25 | 2017-08-29 | 国网浙江省电力公司电力科学研究院 | A kind of discharge source localization method of GIS ultrahigh frequency local discharge on-line monitoring device |
| CN109490728A (en) * | 2018-11-30 | 2019-03-19 | 合肥工业大学 | A kind of substation's partial discharge positioning method based on regularization |
| CN109490728B (en) * | 2018-11-30 | 2020-12-01 | 合肥工业大学 | Regularization-based transformer substation partial discharge positioning method |
| CN113406454A (en) * | 2021-06-30 | 2021-09-17 | 平顶山学院 | Partial discharge live inspection system and method suitable for open-type transformer substation |
| CN113406454B (en) * | 2021-06-30 | 2023-07-07 | 平顶山学院 | Partial discharge live inspection system and method suitable for open-type transformer substation |
| CN114325250A (en) * | 2021-11-16 | 2022-04-12 | 国网天津市电力公司电力科学研究院 | Partial discharge detection device and method integrating positioning detection and map detection functions |
| CN114325250B (en) * | 2021-11-16 | 2024-02-27 | 国网天津市电力公司电力科学研究院 | Partial discharge detection device and method integrating positioning detection and map detection functions |
| CN114689998A (en) * | 2022-02-22 | 2022-07-01 | 上海格鲁布科技有限公司 | Portable dial partial discharge detection device, system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105467287A (en) | GIS (Gas Insulated Switchgear) partial discharge automatic positioning device based on ultra-high frequency detection technology | |
| CN103913683B (en) | A kind of Partial Discharge Sources method for rapidly positioning based on double-H groove weld HF sensor | |
| CN202433482U (en) | Portable partial discharge acoustic-electric joint detection apparatus for GIS | |
| CN203249989U (en) | Transformer partial discharge on-line monitoring system | |
| CN102866334A (en) | Vehicle-mounted local discharge locating system for mobile substation and locating method thereof | |
| CN101644737A (en) | Positioning device and positioning method for fault detection of local discharge | |
| CN102435922A (en) | Acoustic-electric combined detection system and positioning method for GIS (Gas Insulated Switchgear) local discharge | |
| CN102692588A (en) | Partial discharge detecting and positioning system and method of high-tension switch cabinet | |
| CN202383280U (en) | Detection device of power line fault indicator | |
| CN103558520A (en) | Partial-discharge electrification detecting system and locating method for gas-insulation combined electrical appliance | |
| CN105022020A (en) | RF electromagnetic field and radio immunity test system and method of electric energy meter | |
| CN103424675A (en) | Ultrahigh frequency antenna array partial discharge detection system | |
| CN103197206A (en) | Electrical level scanning type ultrahigh frequency partial discharge on-line monitoring system and monitoring method | |
| CN103969559A (en) | Method and system for positioning local discharge space of power equipment of transformer substation | |
| CN103954911A (en) | Breaker arcing starting time detection system and method | |
| CN103558523A (en) | Detection device for partial discharge of switch cabinet | |
| CN103823164A (en) | Ultra-high frequency non-contact partial discharge positioning detecting device and positioning algorithm | |
| CN202305736U (en) | Partial discharge detection device of gas insulation combination electric appliance | |
| CN208888335U (en) | A kind of positioning system of local discharge of electrical equipment | |
| CN104569764A (en) | Live detection system for creeping discharge of composite apparatus and method thereof | |
| CN103884956A (en) | Device and method for positioning partial discharge of high-voltage equipment through oscilloscope | |
| CN103063368A (en) | Monitoring system of sulfur hexafluoride (SF6) gas leakage | |
| CN110108993A (en) | A kind of multiband three-dimensional joint test method for power equipment shelf depreciation | |
| CN202939265U (en) | Vehicle-mounted transformer substation partial discharge positioning system | |
| CN202583397U (en) | A partial discharge monitoring and positioning system of high-tension switch cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160406 |