CN207705747U - A kind of cross connection grounding case with local discharge detecting function - Google Patents
A kind of cross connection grounding case with local discharge detecting function Download PDFInfo
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- CN207705747U CN207705747U CN201820157669.5U CN201820157669U CN207705747U CN 207705747 U CN207705747 U CN 207705747U CN 201820157669 U CN201820157669 U CN 201820157669U CN 207705747 U CN207705747 U CN 207705747U
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Abstract
The utility model proposes a kind of cross connection grounding case with local discharge detecting function, including babinet, case lid, interface of the ground wire end and each interfaces end, box house ground wire line bank, each phase connection row and cross interconnected line bank are equipped with outside babinet.The utility model in cross connection grounding case by being arranged local discharge sensor, and the signal of sensor detection is drawn by Partial Discharge Detection interface end reserved outside babinet, convenient for carrying out on-line checking to the shelf depreciation of cable in cross connection grounding case, meanwhile window, which is arranged, on case lid can also facilitate operations staff to carry out live detection to local discharge signal.
Description
Technical field
The utility model is related to equipments of HV transmission lines technical fields, more particularly to one kind having Partial Discharge Detection work(
The cross connection grounding case of energy.
Background technology
For the shielding layer grounding of the longer high voltage single-core cable of length, the method for all using " cross interconnected ", this side
Method is that circuit is divided into three segments or three times section of equal length, installs insulating joint between each segment, three screens at insulating joint
Coaxial cable is used between covering, and transposition connection is carried out through cross interconnected case.Meeting outer jacket voltage request by cross interconnected
Meanwhile the electric current of outer jacket being minimized by three-phase neutralization.
The insulation performance of the transition joint of cable is often below cable body insulation performance, is in high voltage electric transmission cable system
Insulate weak link, and the technique and constructional deficiency of transition joint make connector internal electric field be unevenly distributed, leads to the production of shelf depreciation
It is raw.Under power-frequency voltage, shelf depreciation will cause the generation and expansion of electricity tree in cable insulation, and accelerate the deterioration of insulation, most
Lead to insulation breakdown eventually, cable major accident is caused to occur.
In order to ensure high-tension cable safe operation, need to carry out Partial Discharge Detection to running high-tension cable.It is existing
Technology monitors the local discharge signal of cable in cross interconnected case by high frequency CT sensors, and detailed process is to open and intersect
High frequency CT sensors are connected with the test point in cross interconnected case, are monitored to local discharge signal by mutual header, monitoring
The connection of high frequency CT sensors and test point is disconnected after the completion, cross interconnected case is closed after laying down high frequency CT sensors.
Cross interconnected case will be opened when due to monitoring every time, cross interconnected case is reclosed after monitoring, cause operation not side
Just；In addition, being also possible to hot line job when access high frequency CT sensors, cause to operate dangerous；And the friendship due to each producer
Pitch mutual header and connection row's size be different with standard, exist the too wide, sensor of connection row wear to enter and cabinet space too
Distance is too close between small, connection row, not situations such as reserved sensor space, leads to not measure local discharge signal.
Utility model content
To solve the above-mentioned problems, the utility model proposes a kind of cross connection groundings with local discharge detecting function
Case passes through spare interface by the way that local discharge sensor is arranged in cross connection grounding case, and by the signal that sensor detects
It draws, convenient for carrying out on-line checking to the shelf depreciation of cable in cross connection grounding case, meanwhile, the setting of window on case lid
Operations staff is facilitated to carry out live detection to local discharge signal.
Specifically, a kind of cross connection grounding case with local discharge detecting function, including babinet（101）, case lid
（102）, the babinet（101）Outside is equipped with interface of the ground wire end（103）, A1 interfaces end（104）, A2 interfaces end（105）、B1
Interfaces end（106）, B2 interfaces end（107）, C1 interfaces end（108）, C2 interfaces end（109）, the box house sets
There is the first ground wire connection row（110）, the second ground wire connection row（111）, A1 be connected run in（112）, A2 be connected run in（113）、B1
It is connected and runs in（114）, B2 be connected run in（115）, C1 be connected run in（116）, C2 be connected run in（117）, the first cross interconnected row
（118）, the second cross interconnected row（119）, the cross interconnected row of third（120）, the interface of the ground wire end（103）With first ground
Line connection row（110）Connection, A1 interfaces end（104）It is connected with the A1 and runs in（112）Connection, A2 interfaces end
（105）It is connected with the A2 and runs in（113）Connection, B1 interfaces end（106）It is connected with the B1 and runs in（114）Connection,
B2 interfaces end（107）It is connected with the B2 and runs in（115）Connection, C1 interfaces end（108）It is connected with the C1
Run in（116）Connection, C2 interfaces end（109）It is connected with the C2 and runs in（117）, the second ground wire connection row
（111）It connect row with first ground wire（110）, the A2 is connected and runs in（113）, the B2 is connected and runs in（115）, the C2
It is connected and runs in（117）Connection, the first cross interconnected row（118）It is connected with the A1 and runs in（112）It is connected with the B2
Row（115）Connection, the second cross interconnected row（119）It is connected with the B1 and runs in（114）It is connected with the C2 and runs in（117）
Connection, the C1, which is connected, to run in（116）It is connected with the A2 and runs in（113）Connection, it is characterised in that：The A2, which is connected, to run in
（113）, the B2 is connected and runs in（115）, the C2 is connected and runs in（117）On be equipped with local discharge sensor（120、121、
123）, the babinet（101）Outside is additionally provided with Partial Discharge Detection interface end（124）, the babinet（101）Inside is additionally provided with office
Portion's discharge examination connector socket（125）, the Partial Discharge Detection interface end（124）With the Partial Discharge Detection connector socket
（125）Connection, the local discharge sensor（120、121、123）First end is wired to first ground wire and connects
Run in（110）On, the local discharge sensor（120、121、123）Second end is wired to the shelf depreciation
Detect connector socket（125）On corresponding binding post, the first ground wire connection row（110）Also it is wired to the office
Portion's discharge examination connector socket（125）Earth terminal on.
Preferably, the case lid（102）In the correspondence babinet（101）The interior Partial Discharge Detection connector socket
（125）Position be equipped with window（126）, the window（126）Top is equipped with cover board（127）.
Preferably, the cover board（127）Pass through hinge and the case lid（102）The window（126）Edge connects.
Preferably, the cover board（127）Inward flange is equipped with seal washer.
Preferably, the local discharge sensor（120、121、123）For High Frequency Current Sensor.
Preferably, the case lid（102）Inward flange is equipped with seal washer.
Preferably, the interface of the ground wire end（103）, A1 interfaces end（104）, A2 interfaces end（105）, institute
State B1 interfaces end（106）, B2 interfaces end（107）, C1 interfaces end（108）, C2 interfaces end（109）
With the Partial Discharge Detection interface end（124）It is waterproof connector.
Preferably, the second ground wire connection row（111）It is connected respectively with the A2 by protector and is run in（113）, institute
State B2 be connected run in（115）It is connected with the C2 and runs in（117）Connection.
The beneficial effects of the utility model are：
（1）Pass through by the way that local discharge sensor is arranged in cross connection grounding case, and by the signal that sensor detects
Reserved Partial Discharge Detection interface end is drawn outside babinet, convenient for being carried out to the shelf depreciation of cable in cross connection grounding case
On-line checking；
（2）The setting of window, cover board on case lid so that need not when operations staff is to local discharge signal progress live detection
Entire cross connection grounding case is opened completely, it is only necessary to which the cover board for opening case lid window connects Partial Discharge Detection connection plug
Entering to Partial Discharge Detection connector socket can complete to detect.
Description of the drawings
Fig. 1 be the utility model proposes a kind of cross connection grounding case with local discharge detecting function structure
Figure.
Specific implementation mode
For a clearer understanding of the technical features, objectives and effects of the utility model, existing control description of the drawings
Specific embodiment of the present utility model.
A kind of structure of the cross connection grounding case with local discharge detecting function is as shown in Figure 1.Including babinet 101,
Case lid 102,101 outside of babinet are equipped with interface of the ground wire end 103, A1 interfaces end 104, A2 interfaces end 105, B1 interfaces end
106, B2 interfaces end 107, C1 interfaces end 108, C2 interfaces end 109, box house be equipped with the first ground wire connection row 110,
Second ground wire connects row 111, the connected connected 115, C1 that run in of the 114, B2 that runs in of the connected 113, B1 that run in of the connected 112, A2 that run in of A1
Be connected 116, C2 connected run in the 117, first cross interconnected row 118, the second cross interconnected row 119, the cross interconnected row of third of running in
120, interface of the ground wire end 103 connect 110 connection of row with the first ground wire, and A1 interfaces end 104 and A1 be connected to run in and 112 connect, A2
Interfaces end 105 and A2, which are connected to run in, 113 to be connect, and B1 interfaces end 106 and B1 be connected to run in and 114 connect, B2 interfaces end 107
It is connected to run in B2 and 115 connect, C1 interfaces end 108 and C1 be connected runs in and 116 connect, and C2 interfaces end 109 is connected with C2
117 are arranged, the second ground wire connection row 111 connect row 110 with the first ground wire, the connected 115, C2 that run in of the connected 113, B2 that run in of A2 are connected
Run in 117 connections, be connected with the A1 112 and B2 that runs in of the first cross interconnected row 118 is connected to run in and 115 connect, and second is cross interconnected
Be connected with the B1 114 and C2 that runs in of row 119 is connected to run in and 117 connect, C1 be connected run in 116 with A2 it is connected run in 113 connect, spy
Sign is：A2 be connected run in 113, B2 be connected run in 115, C2 be connected run in be equipped on 117 local discharge sensor 120,
121,123, Partial Discharge Detection interface end 124 is additionally provided with outside babinet 101, and Partial Discharge Detection is additionally provided with inside babinet 101
Connector socket 125, Partial Discharge Detection interface end 124 are connect with Partial Discharge Detection connector socket 125, local discharge sensor
120,121,123 first ends be wired to the first ground wire connection row 110 on, local discharge sensor 120,121,
123 second ends are wired on 125 corresponding binding post of Partial Discharge Detection connector socket, the first ground wire connection row
110 are also wired on the earth terminal of Partial Discharge Detection connector socket 125.Wherein, Partial Discharge Detection connects
Mouth end 124 is used to provide the Partial Discharge Detection signal of each phase to on-line monitoring system.
As a kind of preferred embodiment, the position of the Partial Discharge Detection connector socket 125 in corresponding babinet 101 of case lid 102
Window 126 is installed, 126 top of window is equipped with cover board 127.Operations staff can directly open cover board 127, under window 126
The plug of detection line is inserted on the discharge examination connector socket 125 of side, detection line believes the sensing of local discharge sensor
It number is transmitted in peripheral hardware or hand-held Partial Discharge Detection equipment, thus operations staff is easy to implement to cross connection grounding case office
The live detection of portion's electric discharge.
As a kind of preferred embodiment, cover board 127 is connect by hinge with 126 edge of window of case lid 102.
As a kind of preferred embodiment, 127 inward flange of cover board is equipped with seal washer.
As a kind of preferred embodiment, local discharge sensor 120,121,123 is High Frequency Current Sensor.
As a kind of preferred embodiment, 102 inward flange of case lid is equipped with seal washer.
As a kind of preferred embodiment, interface of the ground wire end 103, A1 interfaces end 104, A2 interfaces end 105, B1 interfaces
End 106, B2 interfaces end 107, C1 interfaces end 108, C2 interfaces end 109 and Partial Discharge Detection interface end 124 are anti-
Water swivel.
As a kind of preferred embodiment, the second ground wire connection row 111 is connected with A2 the 113, B2 that runs in respectively by protector
It is connected to run in and 115 is connected with C2 117 connections of running in.
Specific embodiment of the utility model will be passed by the way that local discharge sensor is arranged in cross connection grounding case
The signal of sensor detection is drawn by Partial Discharge Detection interface end reserved outside babinet, convenient for in cross connection grounding case
The shelf depreciation of cable carries out on-line checking；The setting of window, cover board on case lid so that operations staff to local discharge signal into
Entire cross connection grounding case need not be opened completely when row live detection, it is only necessary to which the cover board for opening case lid window will locally be put
Electro-detection connection plug is linked into Partial Discharge Detection connector socket and can complete to detect.
It should be noted that for each embodiment of the method above-mentioned, for simple description, therefore it is all expressed as to a system
The combination of actions of row, but those skilled in the art should understand that, the application is not limited by the described action sequence, because
For according to the application, certain some step can be performed in other orders or simultaneously.Secondly, those skilled in the art also should
Know, embodiment described in this description belongs to preferred embodiment, involved action and unit not necessarily this Shen
It please be necessary.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in some embodiment
Part, may refer to the associated description of other embodiment.
Above disclosures are merely preferred embodiments of the utility model, with this utility model cannot be limited certainly
Interest field, therefore equivalent variations made according to the claim of the utility model still fall within the scope of the utility model.
Claims (8)
1. a kind of cross connection grounding case with local discharge detecting function, including babinet（101）, case lid（102）, the case
Body（101）Outside is equipped with interface of the ground wire end（103）, A1 interfaces end（104）, A2 interfaces end（105）, B1 interfaces end
（106）, B2 interfaces end（107）, C1 interfaces end（108）, C2 interfaces end（109）, the box house is equipped with the first
Line connection row（110）, the second ground wire connection row（111）, A1 be connected run in（112）, A2 be connected run in（113）, B1 be connected run in
（114）, B2 be connected run in（115）, C1 be connected run in（116）, C2 be connected run in（117）, the first cross interconnected row（118）,
Two cross interconnected rows（119）, the cross interconnected row of third（120）, the interface of the ground wire end（103）It connect row with first ground wire
（110）Connection, A1 interfaces end（104）It is connected with the A1 and runs in（112）Connection, A2 interfaces end（105）With
The A2, which is connected, to run in（113）Connection, B1 interfaces end（106）It is connected with the B1 and runs in（114）Connection, the B2 phases
Interface end（107）It is connected with the B2 and runs in（115）Connection, C1 interfaces end（108）It is connected with the C1 and runs in（116）
Connection, C2 interfaces end（109）It is connected with the C2 and runs in（117）, the second ground wire connection row（111）With described
One ground wire connection row（110）, the A2 is connected and runs in（113）, the B2 is connected and runs in（115）, the C2 is connected and runs in（117）
Connection, the first cross interconnected row（118）It is connected with the A1 and runs in（112）It is connected with the B2 and runs in（115）Connection, institute
State the second cross interconnected row（119）It is connected with the B1 and runs in（114）It is connected with the C2 and runs in（117）Connection, the C1 phases
Connection row（116）It is connected with the A2 and runs in（113）Connection, it is characterised in that：The A2, which is connected, to run in（113）, the B2 phases
Connection row（115）, the C2 is connected and runs in（117）On be equipped with local discharge sensor（120、121、123）, the babinet
（101）Outside is additionally provided with Partial Discharge Detection interface end（124）, the babinet（101）Inside is additionally provided with Partial Discharge Detection and connects
Line socket（125）, the Partial Discharge Detection interface end（124）With the Partial Discharge Detection connector socket（125）Connection, institute
State local discharge sensor（120、121、123）First end is wired to the first ground wire connection row（110）On,
The local discharge sensor（120、121、123）Second end is wired to the Partial Discharge Detection connector socket
（125）On corresponding binding post, the first ground wire connection row（110）The Partial Discharge Detection is also wired to connect
Line socket（125）Earth terminal on.
2. a kind of cross connection grounding case with local discharge detecting function as described in claim 1, it is characterised in that：Institute
State case lid（102）In the correspondence babinet（101）The interior Partial Discharge Detection connector socket（125）Position be equipped with window
（126）, the window（126）Top is equipped with cover board（127）.
3. a kind of cross connection grounding case with local discharge detecting function as claimed in claim 2, it is characterised in that：Institute
State cover board（127）Pass through hinge and the case lid（102）The window（126）Edge connects.
4. a kind of cross connection grounding case with local discharge detecting function as claimed in claim 2, it is characterised in that：Institute
State cover board（127）Inward flange is equipped with seal washer.
5. a kind of cross connection grounding case with local discharge detecting function as described in claim 1, it is characterised in that：Institute
State local discharge sensor（120、121、123）For High Frequency Current Sensor.
6. a kind of cross connection grounding case with local discharge detecting function as described in claim 1, it is characterised in that：Institute
State case lid（102）Inward flange is equipped with seal washer.
7. a kind of cross connection grounding case with local discharge detecting function as described in claim 1, it is characterised in that：Institute
State interface of the ground wire end（103）, A1 interfaces end（104）, A2 interfaces end（105）, B1 interfaces end
（106）, B2 interfaces end（107）, C1 interfaces end（108）, C2 interfaces end（109）It is put with the part
Electro-detection interface end（124）It is waterproof connector.
8. a kind of cross connection grounding case with local discharge detecting function as described in claim 1, it is characterised in that：Institute
State the second ground wire connection row（111）It is connected respectively with the A2 by protector and is run in（113）, the B2 is connected and runs in（115）
It is connected with the C2 and runs in（117）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820157669.5U CN207705747U (en) | 2018-01-30 | 2018-01-30 | A kind of cross connection grounding case with local discharge detecting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820157669.5U CN207705747U (en) | 2018-01-30 | 2018-01-30 | A kind of cross connection grounding case with local discharge detecting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207705747U true CN207705747U (en) | 2018-08-07 |
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ID=63031668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820157669.5U Expired - Fee Related CN207705747U (en) | 2018-01-30 | 2018-01-30 | A kind of cross connection grounding case with local discharge detecting function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207705747U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110581383A (en) * | 2019-09-17 | 2019-12-17 | 深圳供电局有限公司 | Single-core cable grounding device |
| CN110601126A (en) * | 2019-09-17 | 2019-12-20 | 深圳供电局有限公司 | Connecting box for single-core cable inlet wire |
| CN114928009A (en) * | 2022-06-21 | 2022-08-19 | 重庆泰山电缆有限公司 | High-voltage cable grounding box capable of being free of opening detection |
-
2018
- 2018-01-30 CN CN201820157669.5U patent/CN207705747U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110581383A (en) * | 2019-09-17 | 2019-12-17 | 深圳供电局有限公司 | Single-core cable grounding device |
| CN110601126A (en) * | 2019-09-17 | 2019-12-20 | 深圳供电局有限公司 | Connecting box for single-core cable inlet wire |
| CN114928009A (en) * | 2022-06-21 | 2022-08-19 | 重庆泰山电缆有限公司 | High-voltage cable grounding box capable of being free of opening detection |
| CN114928009B (en) * | 2022-06-21 | 2023-10-27 | 重庆泰山电缆有限公司 | High-voltage cable grounding box capable of being free from opening detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180807 Termination date: 20210130 |