CN110568229A - 220KV current transformer bushing end screen signal pickup device - Google Patents
220KV current transformer bushing end screen signal pickup device Download PDFInfo
- Publication number
- CN110568229A CN110568229A CN201910851774.8A CN201910851774A CN110568229A CN 110568229 A CN110568229 A CN 110568229A CN 201910851774 A CN201910851774 A CN 201910851774A CN 110568229 A CN110568229 A CN 110568229A
- Authority
- CN
- China
- Prior art keywords
- frequency
- copper bar
- low
- cylinder
- sensor
- 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
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 87
- 229910052802 copper Inorganic materials 0.000 claims abstract description 87
- 239000010949 copper Substances 0.000 claims abstract description 87
- 239000002184 metal Substances 0.000 claims abstract description 45
- 229910052751 metal Inorganic materials 0.000 claims abstract description 45
- 238000009434 installation Methods 0.000 claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000011347 resin Substances 0.000 claims abstract description 4
- 229920005989 resin Polymers 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 15
- 239000000919 ceramic Substances 0.000 claims description 6
- 239000007769 metal material Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 5
- 230000003449 preventive effect Effects 0.000 description 2
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
-
- 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
- G01R31/1263—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 solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses a 220KV current transformer bushing end screen signal pickup device. The existing device has the defects of inconvenient installation, large signal attenuation and low detection efficiency. The invention comprises a high-frequency signal acquisition assembly and a low-frequency signal acquisition assembly which are in threaded connection. The high-frequency signal acquisition assembly comprises a high-frequency assembly shell, a horizontal baffle, a copper bar fixing block, a copper bar and a high-frequency partial discharge sensor. The horizontal baffle and the copper bar fixing block isolate the copper bar from the high-frequency assembly shell. The low-frequency signal acquisition assembly comprises a low-frequency assembly shell, a split pin, a metal hose leading-out cylinder, a sensor mounting inner cylinder, a sensor mounting outer cylinder and a low-frequency dielectric loss sensor. The metal hose, the high-frequency signal wire and the low-frequency signal wire are led out of the pickup device through the metal hose leading-out cylinder, and then resin materials are injected to seal the metal hose leading-out cylinder. The invention adopts an integrated sealing structure, has good shielding performance and anti-interference performance, is safe and reliable to use, and can effectively adapt to the field environment.
Description
Technical Field
the invention belongs to the technical field of power transmission, particularly relates to the technical field of high-voltage detection, and relates to a method for picking up an end screen signal of a 220KV current transformer bushing.
Background
The current transformer bushing fault is one of the important reasons for power failure of power equipment, and the safe and reliable operation of the equipment is seriously endangered. At present, the main approach for detecting the insulation state of the sleeve is to perform a preventive test, but the test period of the preventive test is long, and the potential fault of the sleeve in operation is difficult to find in time.
The partial discharge detection of the sleeve mainly acquires signals through the end screen of the sleeve, and related personnel research a device for acquiring signals through the end screen of the sleeve at present, mainly by changing a grounding structure of the end screen of the sleeve, prolonging grounding wires of the end screen of the sleeve and other modes, and acquiring signals of current, phase and the like of the end screen of the sleeve. The existing device has the defects of inconvenient installation, large signal attenuation, low detection efficiency, potential safety hazard and the like.
Disclosure of Invention
The invention aims to provide a 220KV current transformer bushing end screen signal pickup device aiming at the defects of the prior art.
The invention comprises a high-frequency signal acquisition assembly and a low-frequency signal acquisition assembly which are in threaded connection.
The high-frequency signal acquisition assembly comprises a high-frequency assembly shell, a horizontal baffle, a copper bar fixing block, a copper bar and a high-frequency partial discharge sensor.
The high-frequency component shell is a metal cylinder with two open ends, and the inner wall of the shell is step-shaped.
the horizontal baffle is a circular non-metallic material plate, the horizontal baffle is fixedly connected with one end of the high-frequency assembly shell, and a copper bar through hole is formed in the center of the horizontal baffle.
The copper bar fixing block is a plastic stepped cylinder, and a copper bar through hole is axially formed in the center of the copper bar fixing block; the copper bar fixing block is arranged on the horizontal baffle, and the step shape of the outer wall of the copper bar fixing block is matched with the step shape of the inner wall of the high-frequency assembly shell.
The copper bar is a step-shaped cylinder, the longitudinal section of the copper bar is T-shaped, the upper part of the copper bar is provided with an installation platform, and the lower part of the copper bar is provided with a copper bar body; the mounting platform is arranged on the copper bar fixing block, and the copper bar is fixedly connected with the copper bar fixing block through screws; the copper bar body passes through the copper bar through hole and then extends out of the high-frequency assembly shell.
the high-frequency partial discharge sensor is a ceramic ring wound with a coil and is sleeved outside the mounting platform part of the copper rod.
The low-frequency signal acquisition assembly comprises a low-frequency assembly shell, a split pin, a metal hose leading-out cylinder, a sensor mounting inner cylinder, a sensor mounting outer cylinder and a low-frequency dielectric loss sensor.
The low-frequency component shell is a metal cylinder with one open end and one closed end, the open end is in threaded connection with one end of the high-frequency component shell, the closed end is provided with a cotter pin, the side wall is provided with a metal hose leading-out cylinder, and the metal hose leading-out cylinder is communicated with the inner cavity of the low-frequency component shell.
the sensor installation inner tube and the sensor installation outer tube are coaxially arranged, the sensor installation inner tube is arranged in the sensor installation outer tube, the upper end of the sensor installation inner tube and the upper end of the sensor installation outer tube are fixedly connected through a circular upper cover plate, the lower end of the sensor installation inner tube and the lower end of the sensor installation outer tube are fixedly connected through a circular lower cover plate, and a low-frequency signal wire leading-out hole is formed in the upper cover plate.
The low-frequency dielectric loss sensor is a ceramic ring wound with a coil and is arranged in a circular cylindrical space enclosed by the sensor mounting inner cylinder, the sensor mounting outer cylinder, the upper cover plate and the lower cover plate;
One end of a low-frequency signal wire is fixed on the low-frequency dielectric loss sensor, and the other end of the low-frequency signal wire penetrates through the low-frequency signal wire leading-out hole and is led into the metal hose; one end of a high-frequency signal wire is fixed on the high-frequency partial discharge sensor, and the other end of the high-frequency signal wire penetrates through a gap between the sensor mounting outer cylinder and the low-frequency component shell and is led into the metal hose.
The horizontal baffle is arranged at one end of the high-frequency assembly shell, and the copper bar fixing block, the copper bar and the high-frequency partial discharge sensor are arranged in the high-frequency assembly shell.
furthermore, an annular groove is formed in the inner wall of the high-frequency component shell close to the bottom, and an annular bulge is formed in the horizontal baffle plate along the side edge; the annular bulge is positioned in the annular groove and fixedly connects the horizontal baffle with the high-frequency assembly shell.
Furthermore, the horizontal baffle and the copper bar fixing block isolate the copper bar from the high-frequency assembly shell.
Furthermore, a sealing ring is arranged at the joint of the high-frequency component shell and the low-frequency component shell.
Furthermore, the sensor installation inner cylinder, the sensor installation outer cylinder, the upper cover plate and the lower cover plate are made of metal materials and enclose a circular cylindrical low-frequency dielectric loss sensor installation space.
Furthermore, a copper bar grounding wire welding blind hole is formed in the center of the top surface of the copper bar mounting platform, and a grounding wire welding blind hole is formed in the upper portion of the inner wall of the low-frequency component shell; one end of the copper bar grounding wire is welded in the copper bar grounding wire welding blind hole, and the other end of the copper bar grounding wire is welded in the grounding wire welding blind hole after penetrating through the sensor mounting inner cylinder; one end of the grounding wire of the sensor mounting cylinder is connected to the upper cover plate, and the other end of the grounding wire of the sensor mounting cylinder is welded in the grounding wire welding blind hole.
Furthermore, the metal hose, the high-frequency signal wire and the low-frequency signal wire are led out of the pickup device through the metal hose leading-out cylinder; after the metal hose extends out of the metal hose leading-out cylinder, resin material is injected through the metal hose leading-out cylinder, and the metal hose leading-out cylinder is closed.
the invention adopts an integrated sealing structure, has good shielding performance and anti-interference performance, ensures that all parts are reliably contacted and can be safely and effectively grounded, and has the advantages of oil resistance, solvent resistance, high and low temperature resistance, safe and reliable use, long-term use and effective adaptation to the field environment. The invention avoids the defects of the prior art, the whole device forms the shortest grounding path under the condition of not changing the original grounding mode, the installation is convenient, the grounding structure of the bushing end screen does not need to be changed, and the extension of the grounding wire of the bushing end screen is also not needed. Meanwhile, signals can be effectively acquired through the low-frequency dielectric loss sensor and the high-frequency partial discharge sensor, signal attenuation is reduced, detection efficiency is greatly improved, and the defects of potential safety hazards and the like do not exist.
Drawings
Fig. 1 is a schematic cross-sectional structure of the present invention.
Detailed Description
As shown in figure 1, the 220KV current transformer bushing end screen signal pickup device comprises a high-frequency signal acquisition assembly I and a low-frequency signal acquisition assembly II which are in threaded connection.
The high-frequency signal acquisition assembly I comprises a high-frequency assembly shell 1, a horizontal baffle 2, a copper bar fixing block 3, a copper bar 4 and a high-frequency partial discharge sensor 5. Horizontal baffle 2 sets up in 1 one end of high frequency subassembly casing, and bar copper fixed block 3, bar copper 4, high frequency partial discharge sensor 5 set up in high frequency subassembly casing 1.
The high-frequency component shell 1 is a metal cylinder with two open ends, an annular groove is formed in the position, close to the bottom, of the inner wall, and the inner wall of the shell is step-shaped.
Horizontal baffle 2 is circular non-metallic material board, is equipped with annular protrusion along the side, and in annular groove was gone into to annular protrusion card, horizontal baffle 2 and the one end fixed connection of high frequency subassembly casing 1, horizontal baffle 2 center division had the bar copper perforation.
The copper bar fixing block 3 is a plastic step-shaped cylinder, and a copper bar through hole is axially formed in the center; the copper bar fixing block 3 is arranged on the horizontal baffle 2, and the step shape of the outer wall of the copper bar fixing block is matched with the step shape of the inner wall of the high-frequency assembly shell 1.
The copper bar 4 is a step-shaped cylinder, the longitudinal section of the copper bar is T-shaped, the upper part of the copper bar is provided with an installation platform, and the lower part of the copper bar is provided with a copper bar body. The mounting platform is arranged on the copper bar fixing block 3, and the copper bar 4 is fixedly connected with the copper bar fixing block 3 through screws. A copper bar grounding wire welding blind hole 4-1 is formed in the center of the top surface of the mounting platform, and the copper bar body penetrates through the copper bar through hole and then extends out of the high-frequency assembly shell 1. The horizontal baffle 2 and the copper bar fixing block 3 isolate the copper bar 4 from the high-frequency assembly shell 1. In operation, the copper bar 4 is connected with the sleeve end screen leading-out end of the current transformer through the metal strip.
the high-frequency partial discharge sensor 5 is a ceramic ring wound with a coil and is sleeved outside the mounting platform part of the copper rod 4.
The low-frequency signal acquisition component II comprises a low-frequency component shell 6, a cotter pin 8, a metal hose leading-out cylinder 9, a sensor mounting inner cylinder 10, a sensor mounting outer cylinder 11 and a low-frequency dielectric loss sensor 15.
The low-frequency component shell 6 is a metal cylinder with one open end and one closed end, the open end of the low-frequency component shell is in threaded connection with one end of the high-frequency component shell 1, and a sealing ring 7 is arranged at the joint of the low-frequency component shell and the high-frequency component shell to play roles of water resistance, dust resistance and shock resistance. And a cotter pin 8 is arranged at the closed end of the low-frequency component shell 6 and is used for being connected with a bushing end screen grounding cover of the current transformer. The side wall of the low-frequency component shell 6 is provided with a metal hose leading-out tube 9, and the metal hose leading-out tube 9 is communicated with the inner cavity of the low-frequency component shell 6.
the sensor installation inner cylinder 10 and the sensor installation outer cylinder 11 are coaxially arranged, the sensor installation inner cylinder 10 is arranged in the sensor installation outer cylinder 11, the upper end of the sensor installation inner cylinder 10 is fixedly connected with the upper end of the sensor installation outer cylinder 11 through a circular upper cover plate 12, the lower end of the sensor installation inner cylinder 10 is fixedly connected with the lower end of the sensor installation outer cylinder 11 through a circular lower cover plate 13, and a low-frequency signal wire leading-out hole 14 is formed in the upper cover plate 12. The sensor mounting inner cylinder 10, the sensor mounting outer cylinder 11, the upper cover plate 12 and the lower cover plate 13 are all made of metal materials.
The low-frequency dielectric loss sensor 15 is a ceramic ring wound with a coil and is arranged in a circular cylindrical space enclosed by the sensor installation inner cylinder 10, the sensor installation outer cylinder 11, the upper cover plate 12 and the lower cover plate 13.
The upper part of the inner wall of the low-frequency assembly shell 6 is provided with a grounding wire welding blind hole 6-1, one end of a copper bar grounding wire is welded in the copper bar grounding wire welding blind hole 4-1, and the other end of the copper bar grounding wire is welded in the grounding wire welding blind hole 6-1 after penetrating through the sensor installation inner cylinder 10. One end of the grounding wire of the sensor mounting cylinder is connected to the upper cover plate 12, and the other end of the grounding wire of the sensor mounting cylinder is also welded in the grounding wire welding blind hole 6-1.
One end of the low-frequency signal wire is fixed on the low-frequency dielectric loss sensor, and the other end of the low-frequency signal wire penetrates through the low-frequency signal wire leading-out hole and is led into the metal hose 16. The low-frequency signal line is used for transmitting the low-frequency dielectric loss signal detected by the low-frequency dielectric loss sensor to the relative dielectric loss tester for analysis.
One end of the high-frequency signal line is fixed on the high-frequency partial discharge sensor, and the other end of the high-frequency signal line passes through a gap between the sensor mounting outer cylinder 11 and the low-frequency component housing 6 and is introduced into the metal hose 16. The high-frequency signal line is used for transmitting the high-frequency partial discharge signal detected by the high-frequency partial discharge sensor to the high-frequency partial discharge detector for analysis.
the metal hose 16, together with the high-frequency signal line and the low-frequency signal line, is led out of the pickup device through the metal hose lead-out cylinder 9. After the metal hose 16 extends out of the metal hose lead-out cylinder 9, a resin material is injected through the metal hose lead-out cylinder 9 to seal the metal hose lead-out cylinder 9.
When the device is used, a copper bar in the device is reliably connected with a tail screen leading-out end of a sleeve of a current transformer through a metal strip and is fixed by a nut. And reliably contacting the cotter pin with a bushing end screen grounding cover of the current transformer, and fixing by using a nut. The sleeve end screen leading-out end of the current transformer and the sleeve end screen grounding cover of the current transformer form a reliable grounding loop, a shortest grounding path can be formed under the condition that the original grounding mode is not changed, the change of a grounding structure of the sleeve end screen is effectively avoided, and meanwhile, the extension of a sleeve end screen grounding wire is not needed. The low-frequency dielectric loss sensor and the high-frequency partial discharge sensor which are sleeved on the grounding loop in a penetrating manner detect signals, and the signals are transmitted to the relative dielectric loss tester and the high-frequency partial discharge detector through signal wires for analysis. The signal attenuation in the process is reduced, and the detection efficiency is greatly improved.
Claims (8)
1. a220 KV current transformer bushing end screen signal pickup device comprises a high-frequency signal acquisition assembly and a low-frequency signal acquisition assembly which are in threaded connection; the method is characterized in that:
The high-frequency signal acquisition assembly comprises a high-frequency assembly shell (1), a horizontal baffle (2), a copper bar fixing block (3), a copper bar (4) and a high-frequency partial discharge sensor (5);
the high-frequency component shell (1) is a metal cylinder with two open ends, and the inner wall of the shell is step-shaped;
The horizontal baffle (2) is a circular non-metallic material plate, the horizontal baffle (2) is fixedly connected with one end of the high-frequency assembly shell (1), and a copper bar through hole is formed in the center of the horizontal baffle (2);
The copper bar fixing block (3) is a plastic stepped cylinder, and a copper bar through hole is axially formed in the center of the plastic stepped cylinder; the copper bar fixing block (3) is arranged on the horizontal baffle (2), and the step shape of the outer wall of the copper bar fixing block is matched with the step shape of the inner wall of the high-frequency assembly shell (1);
The copper bar (4) is a step-shaped cylinder, the longitudinal section of the copper bar is T-shaped, the upper part of the copper bar is provided with an installation platform, and the lower part of the copper bar is provided with a copper bar body; the mounting platform is arranged on the copper bar fixing block (3), and the copper bar (4) is fixedly connected with the copper bar fixing block (3) through screws; the copper bar body passes through the copper bar through hole and then extends out of the high-frequency assembly shell (1);
The high-frequency partial discharge sensor (5) is a ceramic ring wound with a coil, and the high-frequency partial discharge sensor (5) is sleeved outside the mounting platform part of the copper rod (4);
The low-frequency signal acquisition assembly comprises a low-frequency assembly shell (6), a cotter pin (8), a metal hose leading-out cylinder (9), a sensor mounting inner cylinder (10), a sensor mounting outer cylinder (11) and a low-frequency dielectric loss sensor (15);
The low-frequency component shell (6) is a metal cylinder with one open end and one closed end, the open end is in threaded connection with one end of the high-frequency component shell (1), the closed end is provided with a cotter pin (8), the side wall is provided with a metal hose leading-out cylinder (9), and the metal hose leading-out cylinder (9) is communicated with the inner cavity of the low-frequency component shell (6);
The sensor mounting inner cylinder (10) and the sensor mounting outer cylinder (11) are coaxially arranged, the sensor mounting inner cylinder (10) is arranged in the sensor mounting outer cylinder (11), the upper end of the sensor mounting inner cylinder (10) is fixedly connected with the upper end of the sensor mounting outer cylinder (11) through a circular upper cover plate (12), the lower end of the sensor mounting inner cylinder (10) is fixedly connected with the lower end of the sensor mounting outer cylinder (11) through a circular lower cover plate (13), and the upper cover plate (12) is provided with a low-frequency signal wire leading-out hole (14);
The low-frequency dielectric loss sensor (15) is a ceramic ring wound with a coil and is arranged in a circular cylindrical space enclosed by the sensor mounting inner cylinder (10), the sensor mounting outer cylinder (11), the upper cover plate (12) and the lower cover plate (13);
One end of the low-frequency signal wire is fixed on the low-frequency dielectric loss sensor, and the other end of the low-frequency signal wire penetrates through the low-frequency signal wire leading-out hole and is led into the metal hose (16); one end of a high-frequency signal wire is fixed on the high-frequency partial discharge sensor, and the other end of the high-frequency signal wire penetrates through a gap between the sensor mounting outer cylinder (11) and the low-frequency component shell (6) and is led into the metal hose (16).
2. The bushing tap signal pick-up device of the 220KV current transformer as claimed in claim 1, wherein: horizontal baffle (2) set up in high frequency subassembly casing (1) one end, bar copper fixed block (3), bar copper (4), high frequency partial discharge sensor (5) set up in high frequency subassembly casing (1).
3. The bushing tap signal pick-up device of the 220KV current transformer as claimed in claim 1, wherein: an annular groove is formed in the inner wall of the high-frequency component shell (1) close to the bottom, and an annular bulge is formed in the horizontal baffle (2) along the side edge; the annular bulge is positioned in the annular groove and fixedly connects the horizontal baffle (2) with the high-frequency assembly shell (1).
4. The bushing tap signal pick-up device of the 220KV current transformer as claimed in claim 1, wherein: the horizontal baffle (2) and the copper bar fixing block (3) isolate the copper bar (4) from the high-frequency assembly shell (1).
5. The bushing tap signal pick-up device of the 220KV current transformer as claimed in claim 1, wherein: and a sealing ring (7) is arranged at the joint of the high-frequency component shell (1) and the low-frequency component shell (6).
6. The bushing tap signal pick-up device of the 220KV current transformer as claimed in claim 1, wherein: the sensor installation inner cylinder (10), the sensor installation outer cylinder (11), the upper cover plate (12) and the lower cover plate (13) are made of metal materials and enclose a cylindrical low-frequency dielectric loss sensor installation space.
7. The bushing tap signal pick-up device of the 220KV current transformer as claimed in claim 6, wherein: a copper bar grounding wire welding blind hole (4-1) is formed in the center of the top surface of the mounting platform of the copper bar (4), and a grounding wire welding blind hole (6-1) is formed in the upper part of the inner wall of the low-frequency component shell (6); one end of a copper bar grounding wire is welded in the copper bar grounding wire welding blind hole (4-1), and the other end of the copper bar grounding wire is welded in the grounding wire welding blind hole (6-1) after penetrating through the sensor mounting inner cylinder (10); one end of the sensor mounting cylinder grounding wire is connected to the upper cover plate (12), and the other end of the sensor mounting cylinder grounding wire is also welded in the grounding wire welding blind hole (6-1).
8. The bushing end screen signal pick-up device for the 220KV current transformer as claimed in claim 1, 2, 3, 4, 5, 6 or 7, wherein: the metal hose (16) together with the high-frequency signal line and the low-frequency signal line is led out of the pickup device through the metal hose lead-out cylinder (9); after the metal hose (16) extends out of the metal hose leading-out cylinder (9), resin material is injected through the metal hose leading-out cylinder (9) to seal the metal hose leading-out cylinder (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910851774.8A CN110568229A (en) | 2019-09-10 | 2019-09-10 | 220KV current transformer bushing end screen signal pickup device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910851774.8A CN110568229A (en) | 2019-09-10 | 2019-09-10 | 220KV current transformer bushing end screen signal pickup device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110568229A true CN110568229A (en) | 2019-12-13 |
Family
ID=68778876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910851774.8A Pending CN110568229A (en) | 2019-09-10 | 2019-09-10 | 220KV current transformer bushing end screen signal pickup device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110568229A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109654A (en) * | 2021-04-15 | 2021-07-13 | 广东电网有限责任公司 | Wiring sleeve and switch cabinet |
| CN116780137A (en) * | 2023-08-23 | 2023-09-19 | 晋江市高威电磁科技股份有限公司 | Filter capable of being connected with radio frequency interface |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101615497A (en) * | 2009-05-20 | 2009-12-30 | 北京华电云通电力技术有限公司 | The integral connecting structure of transformer and current sensor |
| CN102033154A (en) * | 2010-11-19 | 2011-04-27 | 杨丽琳 | End shield current sampling device suitable for insulated online monitoring system of high-voltage capacitor bushing |
| CN202305568U (en) * | 2011-09-22 | 2012-07-04 | 河南省电力公司焦作供电公司 | Auxiliary tool for transformer bushing tap test |
| CN203324312U (en) * | 2013-06-28 | 2013-12-04 | 国家电网公司 | End-screen guide rod connection and leading-out fixing device |
| CN107831410A (en) * | 2017-09-26 | 2018-03-23 | 杭州西湖电子研究所 | A kind of capacitive bottom shielding of bushing signal supervisory instrument |
| CN211402430U (en) * | 2019-09-10 | 2020-09-01 | 国网安徽省电力有限公司电力科学研究院 | 220KV current transformer bushing end screen signal pickup device |
-
2019
- 2019-09-10 CN CN201910851774.8A patent/CN110568229A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101615497A (en) * | 2009-05-20 | 2009-12-30 | 北京华电云通电力技术有限公司 | The integral connecting structure of transformer and current sensor |
| CN102033154A (en) * | 2010-11-19 | 2011-04-27 | 杨丽琳 | End shield current sampling device suitable for insulated online monitoring system of high-voltage capacitor bushing |
| CN202305568U (en) * | 2011-09-22 | 2012-07-04 | 河南省电力公司焦作供电公司 | Auxiliary tool for transformer bushing tap test |
| CN203324312U (en) * | 2013-06-28 | 2013-12-04 | 国家电网公司 | End-screen guide rod connection and leading-out fixing device |
| CN107831410A (en) * | 2017-09-26 | 2018-03-23 | 杭州西湖电子研究所 | A kind of capacitive bottom shielding of bushing signal supervisory instrument |
| CN211402430U (en) * | 2019-09-10 | 2020-09-01 | 国网安徽省电力有限公司电力科学研究院 | 220KV current transformer bushing end screen signal pickup device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109654A (en) * | 2021-04-15 | 2021-07-13 | 广东电网有限责任公司 | Wiring sleeve and switch cabinet |
| CN116780137A (en) * | 2023-08-23 | 2023-09-19 | 晋江市高威电磁科技股份有限公司 | Filter capable of being connected with radio frequency interface |
| CN116780137B (en) * | 2023-08-23 | 2023-12-08 | 晋江市高威电磁科技股份有限公司 | Filter capable of being connected with radio frequency interface |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110967601B (en) | Multidimensional detection method for partial discharge of transformer bushing | |
| CN107831410B (en) | Capacitive sleeve end screen signal detection device | |
| CN211402430U (en) | 220KV current transformer bushing end screen signal pickup device | |
| CN108427068A (en) | A kind of partial discharge of switchgear detection device and method | |
| CN110568229A (en) | 220KV current transformer bushing end screen signal pickup device | |
| CN214252474U (en) | Intelligent sensor for cable partial discharge live detection | |
| CN104089569A (en) | Multifunctional transformer signal sensor based on capacitive coupling and signal acquisition method | |
| CN105262075A (en) | End screen protective circuit applied to electrification deformation detection of transformer winding and application thereof | |
| CN203054160U (en) | TEV sensor used in partial discharge detection of switch cabinet | |
| US6323655B1 (en) | Method and device for detecting partial discharges | |
| CN107247223B (en) | Built-in photoelectric integrated sensor for detecting insulation defect of gas insulated switchgear | |
| CN107677916B (en) | High-voltage bushing tap grounding protective cover and high-voltage bushing tap | |
| CN107422231B (en) | transformer ultrahigh frequency partial discharge detection device | |
| CN102576039A (en) | Measuring transducer having an electrical transducer and a sensor | |
| CN208443966U (en) | A kind of partial discharge of switchgear detection device | |
| Ahmed et al. | On-line partial discharge detection in cables | |
| CN112731075B (en) | Intelligent sleeve with integrated structure built in sensor | |
| CN107807311B (en) | High-frequency partial discharge signal detection device for capacitive sleeve | |
| CN102707103B (en) | Deformation test lead wire of anti-interference type transformer winding and testing device formed by same | |
| CN205081467U (en) | Be applied to end screen protection circuit that electric -examination of transformer winding deformation band was surveyed | |
| CN207248931U (en) | New capacitive casing signals detection sensor fixing body | |
| CN205090931U (en) | Transformer winding deformation band electrical detection circuitry | |
| CN213636496U (en) | Automatic grounding adapter device for sleeve tap | |
| CN114200269A (en) | Sleeve pulse current sensing system and method for partial discharge detection of transformer | |
| CN112986769A (en) | Cable built-in type partial discharge detection sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |