CN205304202U - Interior high tension cable cross -bonding case of establishing on -line monitoring device - Google Patents
Interior high tension cable cross -bonding case of establishing on -line monitoring device Download PDFInfo
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- CN205304202U CN205304202U CN201520958979.3U CN201520958979U CN205304202U CN 205304202 U CN205304202 U CN 205304202U CN 201520958979 U CN201520958979 U CN 201520958979U CN 205304202 U CN205304202 U CN 205304202U
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Abstract
The utility model discloses an including three coaxial cable 1 inside the interior high tension cable cross -bonding case of establishing on -line monitoring device, box, coaxial cable's upper portion be equipped with inner core connector 11, the lower part is equipped with outer core connector 15, its characterized in that: every coaxial cable 1's inner core connector 11 and the heart yearn of outer core connector between 15 on be equipped with sheath current monitoring CT12, partial discharge monitoring high frequency CT13 and partial discharge monitoring phase place CT14. The utility model discloses an on -line monitoring device's in the high tension cable cross -bonding case sensitivity is high, not fragile, long service life.
Description
Technical field
This utility model relates to a kind of cross interconnected case of high tension cable, particularly relate to a kind of in set the cross interconnected case of high tension cable of on-Line Monitor Device.
Background technology
High voltage electric transmission cable wired foil sheath generally adopts the mode of the cross interconnected transposition of segmentation, to reduce the induced voltage on protective metal shell, thus reducing the faradic current of circulation on protective metal shell. For this, need to by high tension cable segmentation, often continuous three sections of cables adopt transition joint to connect, and constitute one cross interconnected section; One transition joint both sides protective metal shell cross interconnected section interior is connected in two cross interconnected casees by coaxial cable, it is achieved coordinated transposition; Cross interconnected section of both sides protective metal shell is connected with earth mat by earth lead. Owing to cable quality, installation or reason, the cable of existing defects and the transition joint thereof such as aging easily produce partial discharge phenomenon in high-voltage operation process. This partial discharge phenomenon can aggravate the aging of cable insulation, causes the insulating properties of cable to decline or insulating properties disappears, it is easy to cause serious electric power accident, cause large-area power-cuts, cause heavy economic losses. In order to ensure high tension cable safe operation, it is necessary to operating high tension cable is carried out charged Partial Discharge Detection, and the protective metal shell electric current on cross interconnected section of both sides earth lead is carried out live line measurement.
The on-Line Monitor Device used at present is installed in the external elements that high tension cable equipment lays more, stands for a long time to expose to the sun and rain, there is on-Line Monitor Device sensitivity step-down, be subject to the impact of water grading factors and damage, the shortcoming such as service life is short.
Utility model content
Technical problem to be solved in the utility model, it is simply that provide a kind of in set the cross interconnected case of high tension cable of on-Line Monitor Device, its on-Line Monitor Device highly sensitive, be hardly damaged, long service life.
Solving above-mentioned technical problem, the technical solution of the utility model is as follows:
The cross interconnected case of high tension cable of on-Line Monitor Device is set in a kind of, box house includes three coaxial cables 1, the top of described coaxial cable is provided with inner core union joint 11, bottom is provided with outer core union joint 15, it is characterised in that: the heart yearn between inner core union joint 11 and the outer core union joint 15 of every described coaxial cable 1 is provided with sheath current monitoring CT12, partial discharge monitoring high frequency CT13 and partial discharge monitoring phase place CT14.
Preferably, described sheath current monitoring CT12, partial discharge monitoring high frequency CT13, partial discharge monitoring phase place CT14 are individually fixed on the insulation board 4 of mutually insulated.
Preferably, described casing is provided with partial discharge monitoring device outlet port 2 and sheath current monitoring device outlet port 3, described partial discharge monitoring high frequency CT13 and the transmission line of partial discharge monitoring phase place CT14 are fixed on bottom by cable clamping interface, are then attached to partial discharge monitoring device outlet port 2; The transmission line of described sheath current monitoring CT12 is fixed on bottom by cable clamping interface, is then attached to sheath current monitoring device outlet port 3.
Preferably, described local discharge detection device outlet port 2 and sheath current monitoring device outlet port 3 are provided with hermetic water-proof structure.
This utility model has the advantages that
(1) partial discharge monitoring equipment is located in cross interconnected box body, it is to avoid detection equipment is owing to being placed in the shortcoming that the sensitivity caused in natural environment is relatively low, fragile, service life is short for a long time;
(2) the internal existing space of cross interconnected case is made full use of, it is not necessary to existing cross interconnected box structure is made change;
(3) local discharge detection device outlet port and sheath current monitoring device outlet port are provided with hermetic water-proof structure, effectively prevent rainwater and enter the instrument damage caused in cross interconnected case.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, this utility model is further detailed:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of a coaxial cable of the present utility model.
Accompanying drawing labelling: 1-coaxial cable; 2-partial discharge monitoring device outlet port; 3-sheath current monitoring device outlet port; 4-insulation board; 11-inner core union joint; 12-sheath current monitoring CT; 13-partial discharge monitoring high frequency CT; 14-partial discharge monitoring phase place CT; The outer core union joint of 15-.
Detailed description of the invention
As shown in Figure 1 and 2, in a preferred embodiment of the present utility model, the box house of the cross interconnected case of high tension cable inside setting on-Line Monitor Device includes three coaxial cables 1, the top of described coaxial cable is provided with inner core union joint 11, bottom is provided with outer core union joint 15, heart yearn between inner core union joint 11 and the outer core union joint 15 of every described coaxial cable 1 sets gradually A from top to bottom, B, C three-phase sheath current monitoring CT12, partial discharge monitoring high frequency CT13 and partial discharge monitoring phase place CT14, partial discharge monitoring high frequency CT13 and the six roots of sensation transmission line of partial discharge monitoring phase place CT14 on three coaxial cables 1 pass through cable clamping interface assembly, it is fixed on cross interconnected bottom, and pool a transfer cable wire, it is connected to partial discharge monitoring device outlet port 2, on three coaxial cables 1 three transmission lines of A, B, C three-phase partial discharge monitoring phase place CT12 be fixed on cross interconnected bottom by cable clamping interface assembly, and pool a transfer cable wire, be connected to sheath current monitoring device outlet port 3. the cross interconnected case of high tension cable of the present embodiment adopts the mode of " A coaxial cable inner core connects the outer core of B coaxial cable, B coaxial cable inner core connects the outer core of C coaxial cable, C coaxial cable inner core connects the outer core of A coaxial cable " to constitute cross interconnected structure. but, in a further embodiment, other cross interconnected structure can also be adopted, as taked the structure making A coaxial cable inner core connect the outer core of C coaxial cable, the outer core of B coaxial cable inner core connection A coaxial cable, the outer core of C coaxial cable inner core connection B coaxial cable.
Described sheath current monitoring CT12, partial discharge monitoring high frequency CT13, partial discharge monitoring phase place CT14 are separately fixed on three pieces of insulation boards 4.
Described local discharge detection device outlet port 2 and sheath current monitoring device outlet port 3 are provided with hermetic water-proof structure.
In use, each assembly in cross interconnected case is first installed. Coaxial cable inner core is sequentially passed through sheath current monitoring CT12, partial discharge monitoring high frequency CT13, partial discharge monitoring phase place CT14. Then, the inside and outside core of three coaxial cables 1 is connected with inner core union joint 11 and outer core union joint 15 respectively. Sheath current monitoring CT12, partial discharge monitoring high frequency CT13, partial discharge monitoring phase place CT14 are individually secured on three pieces of insulation boards 4. First the transmission line of partial discharge monitoring CT13, partial discharge monitoring phase place CT14 is connected with water joint, and traverse partial discharge monitoring device outlet port 2, this transmission line is fixed in the cable clamping interface in cross interconnected bottom portion again, finally this transmission line is connected with partial discharge monitoring CT13, partial discharge monitoring phase place CT14. Equally, first the transmission line of sheath current monitoring CT12 is connected with water joint, and through sheath current monitoring device outlet port 3, then this transmission line is fixed in the cable clamping interface in cross interconnected bottom portion, finally this transmission line is connected with sheath current monitoring CT12.
Claims (4)
1. set the cross interconnected case of high tension cable of on-Line Monitor Device in one kind, box house includes three coaxial cables (1), the top of described coaxial cable (1) is provided with inner core union joint (11), bottom is provided with outer core union joint (15), it is characterised in that: the heart yearn between inner core union joint (11) and the outer core union joint (15) of every described coaxial cable (1) is provided with sheath current monitoring CT(12), partial discharge monitoring high frequency CT(13) and partial discharge monitoring phase place CT(14).
2. according to claim 1, set the cross interconnected case of high tension cable of on-Line Monitor Device, it is characterised in that: described sheath current monitoring CT(12), partial discharge monitoring high frequency CT(13), partial discharge monitoring phase place CT(14) be individually fixed on the insulation board (4) of mutually insulated.
3. according to claim 1 and 2, set the cross interconnected case of high tension cable of on-Line Monitor Device, it is characterized in that: the casing of the cross interconnected case of described high tension cable is provided with partial discharge monitoring device outlet port (2) and sheath current monitoring device outlet port (3), described partial discharge monitoring high frequency CT(13) and partial discharge monitoring phase place CT(14) transmission line be fixed on bottom by cable clamping interface, be then attached to partial discharge monitoring device outlet port (2); Described sheath current monitoring CT(12) transmission line be fixed on bottom by cable clamping interface, be then attached to sheath current monitoring device outlet port (3).
4. according to claim 3, set the cross interconnected case of high tension cable of on-Line Monitor Device, it is characterised in that: local discharge detection device outlet port (2) and sheath current monitoring device outlet port (3) are provided with hermetic water-proof structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520958979.3U CN205304202U (en) | 2015-11-27 | 2015-11-27 | Interior high tension cable cross -bonding case of establishing on -line monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520958979.3U CN205304202U (en) | 2015-11-27 | 2015-11-27 | Interior high tension cable cross -bonding case of establishing on -line monitoring device |
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| Publication Number | Publication Date |
|---|---|
| CN205304202U true CN205304202U (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520958979.3U Active CN205304202U (en) | 2015-11-27 | 2015-11-27 | Interior high tension cable cross -bonding case of establishing on -line monitoring device |
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| CN (1) | CN205304202U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106940413A (en) * | 2017-05-11 | 2017-07-11 | 国网江苏省电力公司苏州供电公司 | The short trouble section determination methods and device of high pressure long cable circuit |
| CN109193548A (en) * | 2018-10-24 | 2019-01-11 | 深圳供电局有限公司 | A kind of band power frequency and high-frequency mutual inductor Voltage Cable Lines Construction cross-connect case |
| CN112787295A (en) * | 2021-01-06 | 2021-05-11 | 国核电力规划设计研究院重庆有限公司 | Cable transposition erection structure in subdivision cable tunnel |
-
2015
- 2015-11-27 CN CN201520958979.3U patent/CN205304202U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106940413A (en) * | 2017-05-11 | 2017-07-11 | 国网江苏省电力公司苏州供电公司 | The short trouble section determination methods and device of high pressure long cable circuit |
| CN109193548A (en) * | 2018-10-24 | 2019-01-11 | 深圳供电局有限公司 | A kind of band power frequency and high-frequency mutual inductor Voltage Cable Lines Construction cross-connect case |
| CN109193548B (en) * | 2018-10-24 | 2024-02-23 | 深圳供电局有限公司 | High-voltage cable circuit cross interconnection box with power frequency and high-frequency transformer |
| CN112787295A (en) * | 2021-01-06 | 2021-05-11 | 国核电力规划设计研究院重庆有限公司 | Cable transposition erection structure in subdivision cable tunnel |
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