CN210572469U - Large-caliber high-frequency current sensor for live partial discharge detection of cable - Google Patents
Large-caliber high-frequency current sensor for live partial discharge detection of cable Download PDFInfo
- Publication number
- CN210572469U CN210572469U CN201921032898.5U CN201921032898U CN210572469U CN 210572469 U CN210572469 U CN 210572469U CN 201921032898 U CN201921032898 U CN 201921032898U CN 210572469 U CN210572469 U CN 210572469U
- Authority
- CN
- China
- Prior art keywords
- current sensor
- shell
- partial discharge
- cable
- inferior valve
- 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.)
- Active
Links
Images
Abstract
The utility model discloses power cable detects technical field with electricity, and a heavy-calibre high frequency current sensor who is used for electrified office of cable to put detection is disclosed, including the current sensor epitheca, the current sensor inferior valve, two sensor apron and two semicircle ring magnetic cores, the merge into annular setting of current sensor epitheca and current sensor inferior valve, the upper surface of current sensor epitheca and current sensor inferior valve all seted up with semicircle ring magnetic core assorted semicircle ring recess, two semicircle ring recesses are the symmetry setting, two semicircle ring magnetic cores are located the inside setting of two semicircle ring recesses respectively, the lateral wall winding of one of them semicircle ring magnetic core has metal coil, first recess has been seted up to the lower inside wall of current sensor inferior valve. The utility model discloses the bore is great, can directly detect the cable that the intermediate head does not have the earth connection, avoids measuring the earth connection, reduces the background interference, the signal analysis of being convenient for, and the amplitude-frequency characteristic is good, and sensitivity is high, and the people of being convenient for use.
Description
Technical Field
The utility model discloses power cable detects technical field with electricity, especially relates to a heavy-calibre high frequency current sensor that is used for electrified office of cable to put detection.
Background
The cable line is an important component of a power grid system, the safe and reliable operation of the cable line is an important guarantee for the reliability of the power grid system, most of the parts with cable faults are concentrated at the middle joint of the cable, the parts are processed and manufactured by on-site secondary technology, the technology level of each construction unit is different, potential hidden dangers exist in the manufacturing process, the hidden dangers can cause internal partial discharge, heating, abnormal grounding circulation and the like due to insulation wetting, aging and the like after long-time operation, the cable equipment faults can be easily caused, the insulation state detection can be carried out on the cable, the hidden dangers of the cable equipment can be found in time, early warning is carried out, sudden power accidents of the cable line caused by the hidden dangers are reduced, and the equipment faults are avoided.
At present, detection aiming at the running state of a cable is mainly divided into power failure detection and live detection, the power failure detection means mainly comprise a voltage withstanding test, dielectric loss detection, oscillation wave partial discharge detection and the like, and the detection has destructiveness to the cable in different degrees; the electrified detection means mainly comprises ultrasonic partial discharge detection, ultrahigh frequency partial discharge detection, high-frequency current partial discharge detection and the like, wherein a high-frequency current method mainly utilizes HFCT to be clamped on a cable connector or a terminal grounding wire to couple a high-frequency current signal, then the high-frequency current method is externally connected with the partial discharge detector, the partial discharge detector adopts a synchronous signal through a connecting signal generator or a synchronous coil, and then the partial discharge detector is connected with a computer through a network cable to collect and analyze data so as to judge whether the cable is flawless or not, but in a distribution network system, the middle connectors of 10kV (20kV) and 35kV cables usually do not have grounding wires, so that partial discharge test cannot be carried out by utilizing the HFCT, the cable cannot be directly detected, and people are influenced to detect the cable, and therefore, the large-caliber high-frequency current sensor for the electrified.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving prior art, in the distribution network system, 10kV (20kV), 35kV cable intermediate head often do not have the earth connection to unable HFCT that utilizes carries out the office and puts the test, unable directness detects the cable, influences the problem that people detected the cable, and the heavy-calibre high frequency current sensor who is used for the electrified office of cable to put the detection that proposes.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a large-caliber high-frequency current sensor for detecting charged partial discharge of a cable comprises an upper current sensor shell, a lower current sensor shell, two sensor cover plates and two semicircular magnetic cores, wherein the upper current sensor shell and the lower current sensor shell are combined into an annular arrangement, semicircular grooves matched with the semicircular magnetic cores are formed in the upper surfaces of the upper current sensor shell and the lower current sensor shell, the two semicircular grooves are symmetrically arranged, the two semicircular magnetic cores are respectively arranged in the two semicircular grooves, a metal coil is wound on the side wall of one semicircular magnetic core, a first groove is formed in the lower inner side wall of the lower current sensor shell, a resistor is fixedly arranged in the first groove, a second groove corresponding to the first groove is formed in the lower outer side wall of the lower current sensor shell, the inside fixedly connected with N of second recess connects, metal coil connects in parallel with resistance and sets up on the N connects, hinge rotation connection each other is passed through to one of them side between current sensor epitheca and the current sensor inferior valve, keep away from one side of hinge between current sensor epitheca and the current sensor inferior valve and be equipped with fixed establishment and pass through the mutual zonulae occludens of fixed establishment, two the sensor apron is connected with the last fixed surface of current sensor epitheca and current sensor inferior valve respectively.
Preferably, the side walls of the semicircular magnetic cores are fixedly sleeved with a plurality of groups of insulating supports which are uniformly distributed, each group of the insulating supports is provided with a group of insulating supports which are respectively fixedly sleeved on the upper side and the lower side of the semicircular magnetic cores, and the insulating supports are fixedly connected with the side walls of the semicircular grooves.
Preferably, fixing mechanism includes first box fastener and second box fastener, first box fastener and current sensor inferior valve fixed connection, second box fastener and current sensor epitheca fixed connection, and first box fastener and second box fastener all keep away from the hinge setting, first box fastener and second box fastener mutually support the setting.
Preferably, the N connects the one end fixedly connected with mounting panel that is located the inside of second recess, the fixed orifices has all been seted up to the surperficial four corners department of mounting panel, and the mounting panel passes through a plurality of set screws and current sensor inferior valve fixed connection.
Preferably, the pin holes are formed in the upper surfaces of the current sensor upper shell, the current sensor lower shell and the two sensor cover plates, and the two sensor cover plates are fixedly connected with the current sensor upper shell and the current sensor lower shell through a plurality of rivets respectively.
Preferably, the inner side walls of the upper current sensor shell and the lower current sensor shell are combined into a circular shape, and the outer side walls of the upper current sensor shell and the lower current sensor shell are combined into an octagonal shape.
Preferably, the output end of the N-junction is connected with the partial discharge detector and the computer through a wire.
Preferably, the size specification of the two semicircular magnetic cores is 170mm × 140mm × 20 mm.
Preferably, the size specification of the upper current sensor shell and the lower current sensor shell is 180mm by 130mm by 40 mm.
Compared with the prior art, the utility model provides a heavy-calibre high frequency current sensor for electrified office of cable is put and is detected possesses following beneficial effect:
1. this a heavy-calibre high frequency current sensor for electrified office of cable is put and is detected, current sensor epitheca through being equipped with, current sensor inferior valve and two sensor apron, open the cover with current sensor epitheca and current sensor inferior valve and establish on waiting to detect the cable, carry out zonulae occludens with current sensor epitheca and current sensor inferior valve through first box fastener and the second box fastener that are equipped with, can external office through the N joint that is equipped with put detector and computer, through two semicircle ring magnetic cores that are equipped with, metal coil and resistance can carry out the office to the cable and put the detection.
The part that does not relate to among the device all is the same with prior art or can adopt prior art to realize, the utility model discloses the bore is great, can directly detect the cable of intermediate head no earth connection, avoids measuring the earth connection, reduces the background interference, the signal analysis of being convenient for, and the amplitude-frequency characteristic is good, and sensitivity is high, and the people of being convenient for use.
Drawings
Fig. 1 is an exploded view of a large-caliber high-frequency current sensor for detecting live partial discharge of a cable according to the present invention;
fig. 2 is an internal overlooking structure diagram of a large-caliber high-frequency current sensor for detecting the live partial discharge of a cable according to the present invention;
FIG. 3 is an enlarged view of the portion A in FIG. 2;
fig. 4 is the utility model provides a heavy-calibre high frequency current sensor witnessed inspections uses the schematic diagram for electrified office of cable is put and is detected.
In the figure: 1 current sensor epitheca, 2 current sensor inferior valves, 3 semicircle magnetic cores, 4 sensor apron, 5 metal coil, 6 resistance, 7N connect, 8 hinges, 9 insulating support, 10 first box fasteners, 11 second box fasteners, 12 mounting panels, 13 set screw, 14 rivets.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-4, a large-caliber high-frequency current sensor for cable live partial discharge detection comprises a current sensor upper shell 1, a current sensor lower shell 2, two sensor cover plates 4 and two semicircular magnetic cores 3, wherein the current sensor upper shell 1 and the current sensor lower shell 2 are combined into an annular arrangement, semicircular grooves matched with the semicircular magnetic cores 3 are respectively formed in the upper surfaces of the current sensor upper shell 1 and the current sensor lower shell 2, the two semicircular grooves are symmetrically arranged, the two semicircular magnetic cores 3 are respectively arranged in the two semicircular grooves, a metal coil 5 is wound on the side wall of one semicircular magnetic core 3, a first groove is formed in the lower inner side wall of the current sensor lower shell 2, a resistor 6 is fixedly arranged in the first groove, and a second groove corresponding to the first groove is formed in the lower outer side wall of the current sensor lower shell 2, the inside fixedly connected with N of second recess connects 7, and metal coil 5 connects 7 with resistance 6 parallelly connected and sets up on N connects, and wherein one side between current sensor epitheca 1 and the current sensor inferior valve 2 is passed through hinge 8 rotation and is connected, and one side of keeping away from hinge 8 between current sensor epitheca 1 and the current sensor inferior valve 2 is equipped with fixed establishment and passes through the mutual zonulae occludens of fixed establishment, two sensor apron 4 respectively with the last fixed surface of current sensor epitheca 1 and current sensor inferior valve 2 and be connected.
The insulating supports 9 that multiunit evenly distributed have all been cup jointed to the lateral wall of two semicircle ring magnetic cores 3, and two insulating supports 9 of every group are fixed the cover respectively and are established in the upper and lower both sides setting of semicircle ring magnetic core 3, and insulating support 9 is convenient for fix two semicircle ring magnetic cores 3 firm with the lateral wall fixed connection of semicircle ring recess.
Fixing mechanism includes first box fastener 10 and second box fastener 11, first box fastener 10 and 2 fixed connection of current sensor inferior valve, second box fastener 11 and 1 fixed connection of current sensor epitheca, and hinge 8 setting is all kept away from to first box fastener 10 and second box fastener 11, first box fastener 10 and second box fastener 11 are mutually supported and are established, be convenient for carry out zonulae occludens with current sensor epitheca 1 and current sensor inferior valve 2, and be convenient for open.
N connects 7 one end fixedly connected with mounting panel 12 that is located the inside of second recess, and the fixed orifices has all been seted up to the surperficial four corners department of mounting panel 12, and mounting panel 12 is through a plurality of set screws 13 and current sensor inferior valve 2 fixed connection.
The pinhole has all been seted up to the upper surface of current sensor epitheca 1, current sensor inferior valve 2 and two sensor apron 4, and two sensor apron 4 all through a plurality of rivets 14 respectively with current sensor epitheca 1 and current sensor inferior valve 2 fixed connection.
The inside wall of current sensor epitheca 1 and current sensor inferior valve 2 merges to circular setting, and the outside wall of current sensor epitheca 1 and current sensor inferior valve 2 merges to the octagon setting, and the people of being convenient for operate.
The output end of the N joint 7 is connected with the partial discharge detector and the computer through wires, so that the collected data can be analyzed and judged conveniently.
The size of the two semicircular magnetic cores 3 is 170mm 140mm 20 mm.
The size specification of the current sensor upper shell 1 and the current sensor lower shell 2 is 180mm 130mm 40 mm.
The utility model discloses in, during the use, through the current sensor epitheca 1 that is equipped with, current sensor inferior valve 2 and two sensor apron 4, open current sensor epitheca 1 and current sensor inferior valve 2 and establish on waiting to detect the cable, carry out zonulae occludens with current sensor epitheca 1 and current sensor inferior valve 2 through the first box fastener 10 and the second box fastener 11 that are equipped with, connect 7 through the N that is equipped with and to put detector and computer in external office, through two semicircle ring magnetic cores 3 that are equipped with, metal coil 5 and resistance 6 can carry out the office to the cable and put the detection.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (9)
1. A large-caliber high-frequency current sensor for cable electrified partial discharge detection comprises a current sensor upper shell (1), a current sensor lower shell (2), two sensor cover plates (4) and two semicircular magnetic cores (3), and is characterized in that the current sensor upper shell (1) and the current sensor lower shell (2) are combined into an annular arrangement, semicircular grooves matched with the semicircular magnetic cores (3) are formed in the upper surfaces of the current sensor upper shell (1) and the current sensor lower shell (2), the two semicircular grooves are symmetrically arranged, the two semicircular magnetic cores (3) are respectively arranged in the two semicircular grooves, a metal coil (5) is wound on the side wall of one semicircular magnetic core (3), a first groove is formed in the lower inner side wall of the current sensor lower shell (2), a resistor (6) is fixedly arranged in the first groove, the lower lateral wall of current sensor inferior valve (2) is seted up the second recess that corresponds with first recess position, the inside fixedly connected with N of second recess connects (7), metal coil (5) and resistance (6) are parallelly connected and are set up on N connects (7), hinge (8) rotation each other connection is passed through to one of them side between current sensor epitheca (1) and the current sensor inferior valve (2), one side of keeping away from hinge (8) between current sensor epitheca (1) and the current sensor inferior valve (2) is equipped with fixed establishment and passes through the mutual zonulae occludens of fixed establishment, two sensor apron (4) respectively with the last fixed surface of current sensor epitheca (1) and current sensor inferior valve (2) be connected.
2. The large-aperture high-frequency current sensor for the charged partial discharge detection of the cable according to claim 1, wherein a plurality of groups of uniformly distributed insulating supports (9) are fixedly sleeved on the side walls of the two semicircular magnetic cores (3), each group of two insulating supports (9) is respectively fixedly sleeved on the upper side and the lower side of the semicircular magnetic core (3), and the insulating supports (9) are fixedly connected with the side walls of the semicircular grooves.
3. The large-caliber high-frequency current sensor for the charged partial discharge detection of the cable according to claim 1, wherein the fixing mechanism comprises a first box fastener (10) and a second box fastener (11), the first box fastener (10) is fixedly connected with the lower current sensor shell (2), the second box fastener (11) is fixedly connected with the upper current sensor shell (1), the first box fastener (10) and the second box fastener (11) are both arranged away from the hinge (8), and the first box fastener (10) and the second box fastener (11) are arranged in a matched manner.
4. The large-caliber high-frequency current sensor for the charged partial discharge detection of the cable according to claim 1, wherein one end of the N-joint (7) located inside the second groove is fixedly connected with a mounting plate (12), four corners of the surface of the mounting plate (12) are respectively provided with a fixing hole, and the mounting plate (12) is fixedly connected with the lower current sensor shell (2) through a plurality of fixing screws (13).
5. The large-caliber high-frequency current sensor for the charged partial discharge detection of the cable according to claim 1, wherein the current sensor upper shell (1), the current sensor lower shell (2) and the upper surfaces of the two sensor cover plates (4) are provided with pin holes, and the two sensor cover plates (4) are respectively and fixedly connected with the current sensor upper shell (1) and the current sensor lower shell (2) through a plurality of rivets (14).
6. The large-caliber high-frequency current sensor for the charged partial discharge detection of the cable according to claim 1, wherein the inner side walls of the upper current sensor shell (1) and the lower current sensor shell (2) are combined into a circular arrangement, and the outer side walls of the upper current sensor shell (1) and the lower current sensor shell (2) are combined into an octagonal arrangement.
7. The large-caliber high-frequency current sensor for the charged partial discharge detection of the cable according to claim 1, wherein the output end of the N connector (7) is connected with a partial discharge detector and a computer through a lead.
8. The high-frequency current sensor of claim 1, wherein the two semicircular magnetic cores (3) have a size of 170mm x 140mm x 20 mm.
9. The large-caliber high-frequency current sensor for the charged partial discharge detection of the cable according to claim 1, wherein the sizes of the upper current sensor shell (1) and the lower current sensor shell (2) are 180mm by 130mm by 40 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921032898.5U CN210572469U (en) | 2019-07-04 | 2019-07-04 | Large-caliber high-frequency current sensor for live partial discharge detection of cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921032898.5U CN210572469U (en) | 2019-07-04 | 2019-07-04 | Large-caliber high-frequency current sensor for live partial discharge detection of cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210572469U true CN210572469U (en) | 2020-05-19 |
Family
ID=70641291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921032898.5U Active CN210572469U (en) | 2019-07-04 | 2019-07-04 | Large-caliber high-frequency current sensor for live partial discharge detection of cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210572469U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113791302A (en) * | 2021-08-05 | 2021-12-14 | 深圳供电局有限公司 | Sensor for partial discharge and synchronous positioning |
-
2019
- 2019-07-04 CN CN201921032898.5U patent/CN210572469U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113791302A (en) * | 2021-08-05 | 2021-12-14 | 深圳供电局有限公司 | Sensor for partial discharge and synchronous positioning |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206671472U (en) | High-tension cable local discharge detection device | |
| CN106716823B (en) | For detecting the method for the electric arc in photovoltaic apparatus and for the detecting devices and photovoltaic apparatus of the electric arc in photovoltaic apparatus | |
| CN203658526U (en) | Live-line detection device used for partial discharging of distribution cable | |
| CN110703136A (en) | Live detection device and method for leakage current of insulator of power transmission line | |
| CN210572469U (en) | Large-caliber high-frequency current sensor for live partial discharge detection of cable | |
| CN105841746A (en) | Multi-parameter fusion type on-line high-voltage high-capacity dry type reactor monitoring device | |
| CN103713244B (en) | A kind of live detection method for distribution cable shelf depreciation | |
| CN202471806U (en) | On-line monitoring sensing device for transformer-core earth current | |
| CN106199482A (en) | A kind of on-line monitoring Intelligent current transformer | |
| CN104061849A (en) | System for on-line detection of winding deformation based on overvoltage signal and response of transformer | |
| CN206099286U (en) | A cable joint | |
| CN207215890U (en) | Current sensor | |
| CN205785301U (en) | A kind of high-voltage large-capacity dry reactor on-Line Monitor Device of multi-parameter fusion | |
| CN205450243U (en) | Fault indicator coil tester | |
| CN210432335U (en) | Shielding device suitable for clamp type current sensor | |
| CN204287402U (en) | A kind of overground cable shelf depreciation live detection sensor | |
| CN107040286A (en) | A kind of enhanced power carrier signal sensor | |
| CN114137363A (en) | Non-invasive AC/DC power flow direction detection device and judgment method | |
| CN204374371U (en) | A kind of D.C. isolation monitoring device detects the failure alarm circuit of electric bridge | |
| CN108710005B (en) | Dielectric loss partial discharge sensor structure and capacitive high-voltage electrical equipment detection mechanism | |
| CN208753240U (en) | A kind of omnipotent breaker | |
| CN106300174A (en) | Relay protection type wall bushing | |
| CN112051337A (en) | Isolator post insulator state detection device and detection method thereof | |
| CN108226699B (en) | Dry-type reactor turn-to-turn insulation live detection device and detection diagnosis method | |
| CN104569761A (en) | Live detection sensor for partial discharge of overhead cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |