CN106841961B - Partial discharge measuring device for cable GIS terminal withstand voltage test - Google Patents
Partial discharge measuring device for cable GIS terminal withstand voltage test Download PDFInfo
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- CN106841961B CN106841961B CN201710256554.1A CN201710256554A CN106841961B CN 106841961 B CN106841961 B CN 106841961B CN 201710256554 A CN201710256554 A CN 201710256554A CN 106841961 B CN106841961 B CN 106841961B
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- insulating sleeve
- gis terminal
- ultrasonic sensor
- partial discharge
- withstand voltage
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- 238000012360 testing method Methods 0.000 title claims abstract description 57
- 230000005540 biological transmission Effects 0.000 claims abstract description 38
- 238000001514 detection method Methods 0.000 claims abstract description 27
- 238000005259 measurement Methods 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims description 27
- 238000005086 pumping Methods 0.000 claims description 7
- 230000008054 signal transmission Effects 0.000 claims description 7
- 239000011810 insulating material Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 230000005684 electric field Effects 0.000 description 8
- 239000007789 gas Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 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
- G01R31/1209—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
Abstract
The invention discloses a partial discharge measurement device for a cable GIS terminal withstand voltage test, which comprises an equalizing ring, an outgoing line rod, a conducting rod, an insulating sleeve, a shielding electrode, an ultrasonic sensor and an ultrasonic sensor transmission line, wherein the equalizing ring is arranged above the insulating sleeve, the shielding electrode is arranged on the inner wall of the insulating sleeve, the ultrasonic sensor is arranged on the shielding electrode, a GIS terminal is arranged inside the insulating sleeve, a high-voltage terminal of the GIS terminal sequentially passes through the equalizing ring which is connected with the conducting rod and the outgoing line rod, the end part of the outgoing line rod extends out of the equalizing ring above the insulating sleeve, the ultrasonic sensor is connected with an ultrasonic signal detection device through the ultrasonic sensor transmission line, and the ultrasonic sensor transmission line is arranged between the shielding electrode and the inner wall of the insulating sleeve. The invention can realize the withstand voltage test of the GIS terminal and simultaneously measure the partial discharge signals, ensure the accuracy of the partial discharge signal detection and has good application prospect.
Description
Technical Field
The invention relates to the technical field of power cable tests, in particular to a partial discharge measuring device for a cable GIS terminal withstand voltage test.
Background
Along with the acceleration of the urban development process, the application scale of the cable line in the power transmission network of each large city is in an ascending trend. However, because of the complex laying environment, the acceptance test after the construction of the power cable line and the state diagnosis test after the repair of the line fault are important means for ensuring the long-term operation reliability of the cable line, so the application of the cable GIS terminal has become one of the main trends of the cable terminal.
At present, aiming at the problem of difficult withstand voltage test of a cable GIS terminal, the existing device for completing the cable GIS terminal cannot effectively detect partial discharge conditions under the withstand voltage test of a cable line, and the conventional withstand voltage test cannot meet the requirements of acceptance test and state diagnosis of the current cable line.
Disclosure of Invention
The invention aims to solve the problem that partial discharge signals cannot be measured in a withstand voltage test aiming at a cable GIS terminal in the current cable line acceptance test. The partial discharge measuring device for the cable GIS terminal withstand voltage test can realize the withstand voltage test of the GIS terminal and simultaneously measure the partial discharge signals through the combination of the insulating sleeve, the ultrasonic sensor transmission line, the GIS terminal and the ultrasonic signal detection equipment, can also ensure the accuracy of the partial discharge signal detection, and has good application prospect.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a partial discharge measuring device for cable GIS terminal withstand voltage test, its characterized in that: comprises a grading ring, a wire outlet rod, a conducting rod, an insulating sleeve, a shielding electrode, an ultrasonic sensor transmission line, a GIS terminal and ultrasonic signal detection equipment,
the grading ring is arranged above the insulating sleeve, the shielding electrode is arranged on the inner wall of the insulating sleeve, the ultrasonic sensor is arranged on the shielding electrode, the GIS terminal is arranged inside the insulating sleeve, the high-voltage terminal of the GIS terminal is sequentially connected with a conducting rod and a wire outgoing rod, the end part of the wire outgoing rod extends out of the grading ring positioned above the insulating sleeve and is electrically connected with the cable conductor, the ultrasonic sensor is connected with the ultrasonic signal detection equipment through an ultrasonic sensor transmission line, the ultrasonic sensor transmission line is arranged between the shielding electrode and the inner wall of the insulating sleeve, and the ultrasonic signal detection equipment is positioned outside the insulating sleeve.
The partial discharge measurement device for the cable GIS terminal withstand voltage test is characterized in that: the upper end of insulating sleeve is provided with the upper cover plate, be provided with first sealing washer between upper cover plate and the upper end of insulating sleeve, the pole of being qualified for the next round of competitions runs through the upper cover plate setting, the material of pole of being qualified for the next round of competitions, upper cover plate is metal, and integrative casting forms, the bottom of pole of being qualified for the next round of competitions is provided with the recess that is used for installing the conducting rod, the conducting rod is located insulating sleeve to be connected with the high-voltage terminal at GIS terminal.
The partial discharge measurement device for the cable GIS terminal withstand voltage test is characterized in that: the end part of the wire outlet rod is a bolt rod and is fixedly connected with the equalizing ring through a bolt.
The partial discharge measurement device for the cable GIS terminal withstand voltage test is characterized in that: the bottom of the insulating sleeve is fixedly connected with the lower bottom plate through a fixing bolt, and a second sealing ring is arranged between the lower bottom plate and the bottom of the insulating sleeve.
The partial discharge measurement device for the cable GIS terminal withstand voltage test is characterized in that: and a sealing cavity is formed among the insulating sleeve, the upper cover plate, the GIS terminal and the lower bottom plate, and SF gas or mixed gas of SF and N is filled in the sealing cavity.
The partial discharge measurement device for the cable GIS terminal withstand voltage test is characterized in that: the insulating sleeve is made of insulating materials, the insulating materials are epoxy resin, polytetrafluoroethylene or glass fiber, and the outer wall of the insulating sleeve is provided with a composite insulating umbrella skirt.
The partial discharge measurement device for the cable GIS terminal withstand voltage test is characterized in that: the shielding electrodes are axially distributed on the inner wall of the insulating sleeve, and the bottoms of the shielding electrodes are fixedly connected with the lower bottom plate through bolts.
The partial discharge measurement device for the cable GIS terminal withstand voltage test is characterized in that: the shielding electrode is provided with a plurality of mounting holes for clamping a plurality of ultrasonic sensors, clamping grooves matched with the mounting holes are formed in the ultrasonic sensors, ultrasonic sensor transmission lines connected with the ultrasonic sensors are axially distributed along the shielding electrode and enter a transmission line channel, the transmission line channel is arranged in a lower bottom plate, the end part of the transmission line channel is provided with a CF vacuum flange, the CF vacuum flange is fixedly connected with a Tao Feng flange, an electrode is arranged on the Tao Feng flange, the ultrasonic sensor transmission lines are connected with the electrode, and the electrode is connected with ultrasonic signal detection equipment through a signal transmission line.
The partial discharge measurement device for the cable GIS terminal withstand voltage test is characterized in that: the lower bottom plate is internally provided with vacuumizing channels, the vacuumizing channels are distributed along the direction perpendicular to the axis of the insulating sleeve, the vacuumizing channels are communicated with the sealing cavity, and vacuumizing ports are formed in the end parts of the vacuumizing channels.
The partial discharge measurement device for the cable GIS terminal withstand voltage test is characterized in that: the lower extreme at GIS terminal extends the underfloor, and extends the underfloor part and cup joints the snap ring, the snap ring is located insulating sleeve's below, snap ring passes through snap ring fastening bolt and underfloor fixed connection.
The beneficial effects of the invention are as follows: the partial discharge measuring device for the cable GIS terminal withstand voltage test can realize the GIS terminal withstand voltage test and simultaneously measure the partial discharge signal through the combination of the insulating sleeve, the ultrasonic sensor transmission line, the GIS terminal and the ultrasonic signal detection equipment, and has the following advantages,
(1) The method provides a new measurement mode for the completion test of the high-voltage power cable, combines the ultrasonic partial discharge detection test with the withstand voltage test, and simultaneously increases the defect discovery probability of the high-voltage power cable and improves the later operation reliability of the high-voltage power cable;
(2) The interference influence of the electric field in the GIS terminal on the ultrasonic signal transmission is fully considered, and the interference of the electric field on the partial discharge signal is greatly eliminated by adopting the mode of shielding the electrode, the coaxial transmission line and the layout position, so that the accuracy of the partial discharge signal detection is improved.
Drawings
Fig. 1 is a schematic structural view of a partial discharge measurement device for a cable GIS terminal withstand voltage test according to the present invention.
The meaning of the symbols in the drawings is as follows:
1: equalizing rings; 2: a wire outlet rod; 3: an upper cover plate; 4: a first seal ring; 5: a conductive rod; 6: an insulating sleeve; 7: sealing the cavity; 8: a shielding electrode; 9: an ultrasonic sensor; 10: an ultrasonic sensor transmission line; 11: a GIS terminal; 12: a fixing bolt; 13: a vacuum pumping port; 14: a vacuumizing channel; 15: a ceramic sealing flange; 16: a transmission line channel; 17: a lower base plate; 18: a clamp ring is used for fastening the bolt; 19: a clasp; 20: an ultrasonic signal detection device.
Detailed Description
The invention will be further described with reference to the drawings.
As shown in fig. 1, the partial discharge measuring device for the withstand voltage test of the cable GIS terminal of the present invention comprises a grading ring 1, an outgoing line rod 2, a conducting rod 5, an insulating sleeve 6, a shielding electrode 8, an ultrasonic sensor 9, an ultrasonic sensor transmission line 10, a GIS terminal 11 and an ultrasonic signal detecting device 20,
the grading ring 1 is arranged above the insulating sleeve 6, the shielding electrode 8 is arranged on the inner wall of the insulating sleeve 6, the ultrasonic sensor 9 is arranged on the shielding electrode 8, the GIS terminal 11 is arranged inside the insulating sleeve 6, the high-voltage terminal of the GIS terminal 11 sequentially passes through the conducting rod 5 and the outgoing line rod 2, the end part of the outgoing line rod 2 extends out of the grading ring 1 above the insulating sleeve 6 and is electrically connected with a cable conductor, the ultrasonic sensor 9 is connected with the ultrasonic signal detection equipment 20 through the ultrasonic sensor transmission line 10, the ultrasonic sensor transmission line 10 is arranged between the shielding electrode 8 and the inner wall of the insulating sleeve 6, and the ultrasonic signal detection equipment 20 is arranged outside the insulating sleeve 6.
The upper end of insulating sleeve 6 is provided with upper cover plate 3, be provided with first sealing washer 4 between upper cover plate 3 and the upper end of insulating sleeve 6, wire pole 2 runs through upper cover plate 3 and sets up, wire pole 2, upper cover plate 3's material is the metal, and integrative casting forms, the bottom of wire pole 2 is provided with the recess that is used for installing conducting rod 5, conducting rod 5 is located insulating sleeve 6 to be connected with GIS terminal 11's high voltage terminal.
The end part of the outgoing line rod 2 is a bolt rod and is fixedly connected with the equalizing ring 1 through a bolt, the equalizing ring 1 plays a role in uniform electric field, and the outgoing line part is prevented from being in a high-voltage corona discharge form to influence the measurement of partial discharge signals.
The bottom of the insulating sleeve 6 is fixedly connected with the lower bottom plate 17 through the fixing bolt 12, a second sealing ring is arranged between the lower bottom plate 17 and the bottom of the insulating sleeve 6, a sealing cavity 7 is formed among the insulating sleeve 6, the upper cover plate 3, the GIS terminal 11 and the lower bottom plate 17, and SF is filled in the sealing cavity 7 6 Gas or SF 6 And N 2 The first and second sealing rings can ensure the sealing effect of the sealing cavity 7.
The insulating sleeve 6 is made of insulating materials, the insulating materials are epoxy resin, polytetrafluoroethylene or glass fiber, and the outer wall of the insulating sleeve 6 is provided with a composite insulating umbrella skirt, so that the heat dissipation effect can be improved.
The shielding electrode 8 is axially distributed on the inner wall of the insulating sleeve 6, the bottom of the shielding electrode 8 is fixedly connected with the lower bottom plate 17 through bolts, the diameter size of the shielding electrode 8 is smaller than that of the insulating sleeve 6, the shielding electrode 8 is made of a metal material, and the shielding electrode 8 is used for keeping zero potential to enable the electric field distribution of the GIS terminal 11 to approach to a form in normal use, and can protect the ultrasonic sensor 9 and the ultrasonic sensor transmission line 10 so as to be influenced by the electric field of the GIS terminal 11.
The shielding electrode 8 is provided with a plurality of mounting holes for clamping a plurality of ultrasonic sensors 9, each ultrasonic sensor 9 is provided with a clamping groove matched with the mounting hole, the ultrasonic sensors 9 can improve the accuracy of cable partial discharge signal detection, an ultrasonic sensor transmission line 10 connected with the ultrasonic sensors 9 is axially distributed along the shielding electrode 8 and enters a transmission line channel 16, the transmission line channel 16 is arranged in a lower bottom plate 17, the end part of the transmission line channel 16 is provided with a CF vacuum flange, the CF vacuum flange is fixedly connected with a Tao Feng flange 15, an electrode is arranged on the Tao Feng flange 15, the ultrasonic sensor transmission line 10 is connected with the electrode, the electrode is connected with an ultrasonic signal detection device 20 through a signal transmission line, the Tao Feng flange 15 has the function of keeping a sealing environment in a sealing cavity 7, and the signal transmission of the ultrasonic sensors 9 is smoothly transmitted to the ultrasonic signal detection device 20.
The ultrasonic sensor 9 adopts non-contact ultrasonic sensor, and the mounted position level of each ultrasonic sensor 9 corresponds the setting, makes the partial discharge signal on the power cable that GIS terminal 11 connects can 360 degrees detect, the ultrasonic signal transmission line 10 adopts coaxial signal line, and its effect is for avoiding the ultrasonic wave partial discharge signal to receive GIS terminal 11's electric field influence.
The lower bottom plate 17 is internally provided with a vacuumizing channel 14, the vacuumizing channel 14 is distributed along the axial direction perpendicular to the insulating sleeve 6, the vacuumizing channel 14 is communicated with the sealing cavity 7, the end part of the vacuumizing channel 14 is provided with a vacuumizing port 13, and the sealing cavity 7 can be vacuumized and injected with SF (sulfur hexafluoride) through the vacuumizing channel 14 6 Or SF 6 And N 2 And (3) mixing the gases.
The lower end of the GIS terminal 11 extends out of the lower base plate 17, a clamping ring 19 is sleeved on the part extending out of the lower base plate 17, the clamping ring 19 is positioned below the insulating sleeve 6, and the clamping ring 19 is fixedly connected with the lower base plate 17 through a clamping ring fastening bolt 17, so that the GIS terminal 11 is fixedly installed on the lower base plate 17.
The partial discharge measuring device for the cable GIS terminal withstand voltage test can be installed outside the tested cable GIS terminal 11 as a high voltage introducing device, and the withstand voltage test is carried out on the whole loop (the cable GIS terminal 11) by applying voltage to the device, wherein the test process comprises the steps of firstly connecting an outgoing line rod 2 to the GIS terminal to be connected with a conductive rod 5, then connecting the outgoing line rod to the tested cable GIS terminal 11 by using an upper cover plate 3 and a lower bottom plate 17 through bolts, and connecting an ultrasonic sensor transmission line 10 to an ultrasonic signal detection device 20 through a ceramic flange 15. The partial discharge measuring device for the cable GIS terminal withstand voltage test is in sealing connection with the tested cable GIS terminal 11 through the metal threads and the sealing ring to form the sealing cavity 7, after the installation is finished, the testing cavity is vacuumized through the vacuumizing port 13, and SF with certain pressure is injected into the sealing cavity 7 through the vacuumizing port 13 6 Gas or SF 6 And N 2 And finally, a test voltage is applied to perform a withstand voltage test, and a partial discharge signal displayed on the ultrasonic signal detection device 20 is observed to perform partial discharge measurement and recording is performed simultaneously with the withstand voltage test.
In summary, the partial discharge measurement device for the cable GIS terminal withstand voltage test of the invention can realize the withstand voltage test of the GIS terminal and simultaneously measure the partial discharge signal through the combination of the insulating sleeve, the ultrasonic sensor transmission line, the GIS terminal and the ultrasonic signal detection equipment, and the device of the invention can combine the ultrasonic partial discharge detection test with the withstand voltage test of the GIS terminal to be simultaneously carried out in the power cable handover test, thereby increasing the defect discovery probability of the high-voltage power cable, improving the later operation reliability of the high-voltage power cable and having the following advantages,
(1) The method provides a new measurement mode for the completion test of the high-voltage power cable, combines the ultrasonic partial discharge detection test with the withstand voltage test, and simultaneously increases the defect discovery probability of the high-voltage power cable and improves the later operation reliability of the high-voltage power cable;
(2) The interference influence of the electric field in the GIS terminal on the ultrasonic signal transmission is fully considered, and the interference of the electric field on the partial discharge signal is greatly eliminated by adopting the mode of shielding the electrode, the coaxial transmission line and the layout position, so that the accuracy of the partial discharge signal detection is improved.
The foregoing has outlined and described the basic principles, features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A partial discharge measuring device for cable GIS terminal withstand voltage test, its characterized in that: comprises a grading ring (1), a wire outlet rod (2), a conducting rod (5), an insulating sleeve (6), a shielding electrode (8), an ultrasonic sensor (9), an ultrasonic sensor transmission line (10), a GIS terminal (11) and an ultrasonic signal detection device (20),
the ultrasonic sensor (9) is a non-contact ultrasonic sensor;
the grading ring (1) is arranged above the insulating sleeve (6), the shielding electrode (8) is arranged on the inner wall of the insulating sleeve (6), the ultrasonic sensor (9) is arranged on the shielding electrode (8), the GIS terminal (11) is arranged inside the insulating sleeve (6), the high-voltage terminal of the GIS terminal (11) sequentially passes through the conducting rod (5) and the outgoing line rod (2), the end part of the outgoing line rod (2) extends out of the grading ring (1) above the insulating sleeve (6) and is electrically connected with a cable conductor, the ultrasonic sensor (9) is connected with the ultrasonic signal detection equipment (20) through the ultrasonic sensor transmission line (10), the ultrasonic sensor transmission line (10) is arranged between the shielding electrode (8) and the inner wall of the insulating sleeve (6), and the ultrasonic signal detection equipment (20) is arranged outside the insulating sleeve (6).
The bottom of the insulating sleeve (6) is fixedly connected with the lower bottom plate (17) through a fixing bolt (12), and a second sealing ring is arranged between the lower bottom plate (17) and the bottom of the insulating sleeve (6);
the shielding electrode (8) is provided with a plurality of mounting holes for clamping a plurality of ultrasonic sensors (9), each ultrasonic sensor (9) is provided with a clamping groove matched with the mounting hole, ultrasonic sensor transmission lines (10) connected with the ultrasonic sensors (9) are axially distributed along the shielding electrode (8) and enter transmission line channels (16), the transmission line channels (16) are arranged in a lower bottom plate (17), CF vacuum flanges are mounted at the ends of the transmission line channels (16), the CF vacuum flanges are fixedly connected with Tao Feng flanges (15), electrodes are arranged on the Tao Feng flanges (15), the ultrasonic sensor transmission lines (10) are connected with the electrodes, and the electrodes are connected with ultrasonic signal detection equipment (20) through signal transmission lines;
the installation positions of the ultrasonic sensors (9) are horizontally and correspondingly arranged, so that partial discharge signals on a power cable connected with the GIS terminal (11) can be detected at 360 degrees, and the ultrasonic sensor transmission line (10) adopts a coaxial signal line.
2. The partial discharge measurement device for a cable GIS terminal withstand voltage test according to claim 1, wherein: the upper end of insulating sleeve (6) is provided with upper cover plate (3), be provided with first sealing washer between upper cover plate (3) and the upper end of insulating sleeve (6), wire pole (2) run through upper cover plate (3) and set up, the material of wire pole (2), upper cover plate (3) is the metal, and integrative casting forms, the bottom of wire pole (2) is provided with the recess that is used for installing conducting rod (5), conducting rod (5) are located insulating sleeve (6) to be connected with the high-voltage terminal of GIS terminal (11).
3. The partial discharge measurement device for a cable GIS terminal withstand voltage test according to claim 1, wherein: the end part of the outgoing line rod (2) is a bolt rod and is fixedly connected with the equalizing ring (1) through a bolt.
4. The partial discharge measurement device for a cable GIS terminal withstand voltage test according to claim 1 or 2, wherein: sealing cavities (7) are formed among the insulating sleeve (6), the upper cover plate (3), the GIS terminal (11) and the lower bottom plate (17), and SF is filled in the sealing cavities (7) 6 Gas or SF 6 And N 2 Is a mixed gas of (a) and (b).
5. The partial discharge measurement device for a cable GIS terminal withstand voltage test according to claim 1, wherein: the insulating sleeve (6) is made of insulating materials, the insulating materials are epoxy resin, polytetrafluoroethylene or glass fiber, and a composite insulating umbrella skirt is arranged on the outer wall of the insulating sleeve (6).
6. The partial discharge measurement device for a cable GIS terminal withstand voltage test according to claim 1, wherein: the shielding electrodes (8) are axially distributed on the inner wall of the insulating sleeve (6), and the bottoms of the shielding electrodes are fixedly connected with the lower bottom plate (17) through bolts.
7. The partial discharge measurement device for a cable GIS terminal withstand voltage test according to claim 4, wherein: the vacuum-pumping device is characterized in that a vacuum-pumping channel (14) is further arranged in the lower bottom plate (17), the vacuum-pumping channels (14) are distributed along the axis direction perpendicular to the insulating sleeve (6), the vacuum-pumping channels (14) are communicated with the sealing cavity (7), and a vacuum-pumping port (13) is formed in the end part of the vacuum-pumping channel (14).
8. The partial discharge measurement device for a cable GIS terminal withstand voltage test according to claim 4, wherein: the lower end of the GIS terminal (11) extends out of the lower bottom plate (17), a clamping ring (19) is sleeved on the part extending out of the lower bottom plate (17), the clamping ring (19) is located below the insulating sleeve (6), and the clamping ring (19) is fixedly connected with the lower bottom plate (17) through a clamping ring fastening bolt (18).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710256554.1A CN106841961B (en) | 2017-04-19 | 2017-04-19 | Partial discharge measuring device for cable GIS terminal withstand voltage test |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710256554.1A CN106841961B (en) | 2017-04-19 | 2017-04-19 | Partial discharge measuring device for cable GIS terminal withstand voltage test |
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| CN106841961A CN106841961A (en) | 2017-06-13 |
| CN106841961B true CN106841961B (en) | 2023-12-15 |
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| CN109856432B (en) * | 2019-03-29 | 2023-11-24 | 国网上海市电力公司 | High-voltage lead supporting device for GIS voltage-resistant partial discharge test |
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| CN112345901B (en) * | 2020-09-30 | 2022-11-25 | 江苏省如高高压电器有限公司 | Partial discharge test method for insulating part for high-voltage switch |
| CN112763864B (en) * | 2020-12-23 | 2023-08-04 | 深圳供电局有限公司 | GIS optical fiber type ultrasonic partial discharge sensor |
| CN112763862B (en) * | 2020-12-23 | 2023-08-08 | 深圳供电局有限公司 | GIS built-in ultrasonic partial discharge sensor |
| CN113608156A (en) * | 2021-08-06 | 2021-11-05 | 云南电网有限责任公司丽江供电局 | False alarm investigation system and judgment method of GIS ultrahigh frequency partial discharge online monitoring device |
| CN113721066B (en) * | 2021-09-10 | 2022-12-27 | 华北电力大学 | Conduction current measuring device and method |
| CN114441911B (en) * | 2022-01-28 | 2022-09-23 | 上海格鲁布科技有限公司 | High-voltage cable partial discharge online detection device capable of preventing charge accumulation |
| CN117471260B (en) * | 2023-12-26 | 2024-03-19 | 河北大学 | Cable insulation detects and trouble early warning positioner |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202256583U (en) * | 2011-09-09 | 2012-05-30 | 北京兴泰学成仪器有限公司 | Partial discharge monitoring device for GIS (gas insulated switchgear) withstand voltage test |
| CN103954888A (en) * | 2014-03-31 | 2014-07-30 | 国家电网公司 | Suspension discharge test model suspension discharge detection positioning device and method |
| CN105067976A (en) * | 2015-08-05 | 2015-11-18 | 国家电网公司 | Cable GIS terminal integral prefabricated AC withstand voltage testing device |
| CN105954658A (en) * | 2016-06-28 | 2016-09-21 | 上海三原电缆附件有限公司 | High-voltage cable GIS terminal test apparatus |
| CN206725708U (en) * | 2017-04-19 | 2017-12-08 | 国网江苏省电力公司电力科学研究院 | A kind of partial-discharge measuring device for cable GIS terminal pressure test |
-
2017
- 2017-04-19 CN CN201710256554.1A patent/CN106841961B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202256583U (en) * | 2011-09-09 | 2012-05-30 | 北京兴泰学成仪器有限公司 | Partial discharge monitoring device for GIS (gas insulated switchgear) withstand voltage test |
| CN103954888A (en) * | 2014-03-31 | 2014-07-30 | 国家电网公司 | Suspension discharge test model suspension discharge detection positioning device and method |
| CN105067976A (en) * | 2015-08-05 | 2015-11-18 | 国家电网公司 | Cable GIS terminal integral prefabricated AC withstand voltage testing device |
| CN105954658A (en) * | 2016-06-28 | 2016-09-21 | 上海三原电缆附件有限公司 | High-voltage cable GIS terminal test apparatus |
| CN206725708U (en) * | 2017-04-19 | 2017-12-08 | 国网江苏省电力公司电力科学研究院 | A kind of partial-discharge measuring device for cable GIS terminal pressure test |
Non-Patent Citations (1)
| Title |
|---|
| 曾雄杰 等.超声波局放监测在GIS耐压局放试验中的应用.《中国电力》.2014,第47卷(第8期),第13-20页. * |
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