CN220382745U - High-voltage intelligent grounding box capable of monitoring cable running state - Google Patents
High-voltage intelligent grounding box capable of monitoring cable running state Download PDFInfo
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- CN220382745U CN220382745U CN202321842869.1U CN202321842869U CN220382745U CN 220382745 U CN220382745 U CN 220382745U CN 202321842869 U CN202321842869 U CN 202321842869U CN 220382745 U CN220382745 U CN 220382745U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 31
- 239000002184 metal Substances 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 58
- 229910052802 copper Inorganic materials 0.000 claims description 55
- 239000010949 copper Substances 0.000 claims description 55
- 238000012806 monitoring device Methods 0.000 claims description 25
- 238000004891 communication Methods 0.000 claims description 18
- 238000009413 insulation Methods 0.000 claims description 8
- 238000002788 crimping Methods 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 5
- 238000009529 body temperature measurement Methods 0.000 claims description 3
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 10
- 239000011241 protective layer Substances 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 1
- 208000025274 Lightning injury Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to a high-voltage intelligent grounding box capable of monitoring the running state of a cable, wherein the head end of a A, B, C grounding wire of a junction box main body is electrically connected with a metal sheath layer of a A, B, C-phase main cable respectively; A. a B, C grounding wire and a total grounding wire are provided with circulation acquisition units; A. a power frequency traveling wave two-in-one sensor is respectively arranged on the B, C phase main cable; the loop current acquisition unit is in wireless connection with the cable state monitoring equipment, and the three power frequency traveling wave two-in-one sensors are respectively and electrically connected with the three cable state monitoring equipment. The beneficial effects are as follows: when defect discharge occurs on the A, B, C phase main cable, the data center analyzes and positions fault points through the received power frequency current and traveling wave current data, and analyzes whether the circulating current exceeds standard or not through the received power frequency current, the circulating current of the protective layer, the voltage of the protective layer and the skin temperature data of the grounding wire, so that the running state of the A, B, C phase main cable can be monitored in real time.
Description
Technical Field
The utility model relates to the field of grounding boxes, in particular to a high-voltage intelligent grounding box capable of monitoring the running state of a cable.
Background
The grounding box is a special device for protecting A, B, C phase main cables, is used for avoiding damage to A, B, C phase main cables caused by lightning strokes and induced overvoltage, and the conditions of protection and grounding circulation of A, B, C phase main cable protective layers, partial discharge of cables and the like in the grounding box can influence the operation reliability of the grounding box, and the conventional grounding box only plays a role of grounding the main cable protective layers, cannot monitor the operation state of A, B, C phase main cables in real time, and cannot position the defect discharge positions of the main cables in time.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a high-voltage intelligent grounding box capable of monitoring the operation state of a cable so as to overcome the defects in the prior art.
The technical scheme for solving the technical problems is as follows: a high voltage intelligent grounding box capable of monitoring the operation state of a cable, comprising: the head end of the A, B, C grounding wire of the junction box main body is electrically connected with the metal sheath layer of the A, B, C-phase main cable respectively; A. the B, C grounding wire and the total grounding wire are provided with a circulation acquisition unit for measuring current, voltage and skin temperature in the grounding wire; a power frequency traveling wave two-in-one sensor for measuring the power frequency current and the traveling wave current in the A, B, C-phase main cable is respectively arranged on the A, B, C-phase main cable; A. the three loop current collection units on the B, C phase grounding wire are respectively and wirelessly connected with the three cable state monitoring devices corresponding to the A, B, C phase, the loop current collection unit on the total grounding wire is wirelessly connected with any one cable state monitoring device, and the three power frequency traveling wave two-in-one sensors on the A, B, C phase main cable are respectively and electrically connected with the three cable state monitoring devices corresponding to the A, B, C phase.
The beneficial effects of the utility model are as follows:
the A, B, C grounding wire and the total grounding wire are respectively provided with a circulation acquisition unit for measuring circulation current, voltage and skin temperature in the grounding wire, current and voltage in the grounding wire indirectly correspond to the circulation current and the voltage of the protective layer of the main cable, and the A, B, C phase main cable is respectively provided with a power frequency traveling wave two-in-one sensor for measuring power frequency current and traveling wave current in the A, B, C phase main cable; the cable state monitoring equipment collects data of the power frequency traveling wave two-in-one sensor, receives the data collected by the circulation collecting unit, processes the data and sends the processed data to the data center, and when defect discharge occurs on the A, B, C phase main cable, the data center analyzes and positions fault points through the received power frequency current and traveling wave current data, sends early warning information to operators on duty, and guides maintenance work; in addition, the data center analyzes whether the circulation exceeds the standard through the received power frequency current, the circulation of the protective layer, the voltage of the protective layer and the skin temperature data of the grounding wire, and if the circulation exceeds the standard, early warning information is sent to operators on duty, so that the running state of the A, B, C phase main cable can be monitored in real time, and the intelligent degree of the whole grounding box is improved.
On the basis of the technical scheme, the utility model can be improved as follows.
Further, the loop current collection unit includes: the shell is provided with a concave surface matched with the grounding wire at one side, and a hinge is arranged at the concave surface above the outer part of the shell; a circular current sensor which is perpendicular to the concave surface and is used for measuring circular current in the grounding wire is arranged in the shell, and an opening of the circular current sensor faces the concave surface; a voltage polar plate for measuring the voltage in the grounding wire is arranged in the shell; the concave surface is embedded with a temperature measuring unit for measuring the surface temperature of the ground wire; the shell is internally provided with a wireless communication module which is respectively and electrically connected with the circulation sensor, the temperature measuring unit and the voltage polar plate, and the wireless communication module is in wireless connection with the cable state monitoring equipment.
The adoption of the method has the further beneficial effects that: can be stably fixed on the grounding wire and measure the current, voltage and skin temperature in the grounding wire.
Further, the housing has a partition plate therein dividing its inner cavity into two independent areas, the loop sensor being located in one of the independent areas, and the temperature measuring unit and the voltage pole plate being located in the other independent area.
The adoption of the method has the further beneficial effects that: the circulation sensor is separated from the temperature measuring unit and the voltage polar plate, so that electromagnetic influence among components is reduced, and measuring precision is improved.
Further, the housing includes: a case and a cover plate detachably provided on an opening side of the case and closing an opening thereof; the shell is provided with a concave surface on the side surface opposite to the cover plate, and the partition plate is arranged in the shell.
Further, the loop current collection unit further includes: and the battery is arranged in the shell and is electrically connected with the wireless communication module.
The adoption of the method has the further beneficial effects that: the power supply is equipped so that the loop current collection units can work independently.
Further, the wireless communication module is an ira module.
Further, the upper end of the junction box main body is provided with a solar cell panel, and the solar cell panel is electrically connected with the cable state monitoring equipment.
The adoption of the method has the further beneficial effects that: the solar panel can supply power for the cable state monitoring equipment, so that a mains supply line is not required to be additionally pulled, and the application range is enlarged.
Further, the junction box main body includes: the cable state monitoring equipment is arranged in the upper cover, a first insulating plate and a second insulating plate are arranged in the outer box, a A, B, C grounding wire row and a total grounding wire row are arranged between the first insulating plate and the second insulating plate in the outer box, one end of each A, B, C grounding wire row is connected with one end of the total grounding wire row, and the other ends of the A, B, C grounding wire row and the total grounding wire row are respectively used as A, B, C connecting inlets and A, B, C connecting outlets; A. the A, B, C connection inlets of the B, C grounding wire row are respectively connected with the metal sheath layer of the A, B, C phase main cable through the A, B, C grounding wires; the total outlet of the total ground line row 160 is grounded via the total ground line 4.
Further, the A, B, C ground lines each include: the copper wire is fixed on the first insulating plate, the metal sheath layer at the tail end of the A, B, C grounding wire is crimped on the second insulating plate through the crimping copper block, and the wire core at the tail end of the A, B, C grounding wire is fixed on the first insulating plate after being crimped through the first copper nose, and the first copper wire is connected with the first copper nose.
Further, the total ground line row includes: the second wiring copper bar, the third wiring copper bar and the second copper nose, the second wiring copper bar is fixed on the first insulation board, the second wiring copper bar is connected with the first wiring copper bar and the third wiring copper bar of the A, B, C grounding wire bar respectively, the second copper nose is connected with the total grounding wire core and the third wiring copper bar respectively, and the second copper nose is grounded through the total grounding wire.
Drawings
FIG. 1 is a block diagram of a high voltage intelligent grounding box capable of monitoring the operation state of a cable according to the utility model;
FIG. 2 is a partial structure of a high-voltage intelligent grounding box capable of monitoring the operation state of a cable according to the utility model;
FIG. 3 is an internal block diagram of FIG. 2;
FIG. 4 is a first block diagram of a loop current acquisition unit;
FIG. 5 is a second block diagram of a loop current acquisition unit;
FIG. 6 is an exploded view of the loop current collection unit;
fig. 7 is a schematic diagram of traveling wave propagation at the moment of failure.
In the drawings, the list of components represented by the various numbers is as follows:
1. the junction box comprises a junction box main body, 110, an outer box, 120, an upper cover, 130, a first insulating plate, 140, a second insulating plate, 150, A, B, C grounding wire rows, 151, a first wiring copper row, 152, a first copper nose, 153, a crimping copper block, 160, a total grounding wire row, 161, a second wiring copper row, 162, a third wiring copper row, 163, a second copper nose, 2, A, B, C grounding wires, 3, A, B, C phase main cables, 4, a total grounding wire, 5, a circulation collecting unit, 510, a shell, 511, a shell, 512, a cover plate, 513, a concave surface, 520, a hinge, 530, a circulation sensor, 540, a temperature measuring unit, 550, a voltage pole plate, 560, a wireless communication module, 570, a partition plate, 580, a battery, 6, a power frequency traveling wave two-in-one sensor, 7, a cable state monitoring device and 8, a solar cell panel.
Detailed Description
The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.
Example 1
As shown in fig. 1, a high voltage intelligent grounding box capable of monitoring the operation state of a cable comprises: the main junction box body 1, the head end of the A, B, C grounding wire 2 of the main junction box body 1 is respectively and electrically connected with the metal sheath layer of the A, B, C phase main cable 3, the A, B, C grounding wires 2 are provided with circulating current acquisition units 5 for measuring the current, the voltage and the skin temperature in the grounding wires, and the current and the voltage in the grounding wires indirectly correspond to the circulating current and the voltage of the protective layer of the main cable, so that whether the circulating current of the protective layer of the main cable exceeds the standard can be effectively judged; the total ground wire 4 of the junction box main body 1 is also provided with a circulation current collecting unit 5 for measuring circulation current, voltage and skin temperature in the ground wire, namely in the embodiment, four circulation current collecting units 5 are provided in an accumulated manner;
A. the B, C phase main cable 3 is respectively provided with a power frequency and traveling wave two-in-one sensor 6 for measuring the power frequency current and traveling wave current in the A, B, C phase main cable 3, and the power frequency current of the main cable is measured, so that the running state of the cable can be monitored, the traveling wave current of the main cable is measured, and the defect discharge of the line can be effectively early warned and positioned;
the three cable state monitoring devices 7 are arranged, wherein the three cable state monitoring devices 7 respectively correspond to A, B, C phases, the three circulating current acquisition units 5 on the A, B, C grounding wire 2 are respectively and wirelessly connected with the cable state monitoring devices 7 corresponding to A, B, C phases, and the circulating current acquisition units 5 on the total grounding wire 4 are wirelessly connected with any one cable state monitoring device 7;
A. the three power frequency traveling wave two-in-one sensors 6 on the B, C phase main cable 3 are respectively and electrically connected with the three cable state monitoring devices 7 corresponding to the A, B, C phase, and the power frequency traveling wave two-in-one sensors 6 and the cable state monitoring devices 7 can be electrically connected by adopting wires;
when the fluctuation of the data acquired by one power frequency traveling wave two-in-one sensor 6 in the three power frequency traveling wave two-in-one sensors 6 exceeds a certain set value, the cable state monitoring equipment 7 sends the data to a data center, and the data center can analyze the cable state according to the data;
the cable state monitoring device 7 collects data of the power frequency traveling wave two-in-one sensor 6, receives the data collected by the loop current collection unit 5, sends the data to the data center after processing, receives instructions of the data center and executes related operations, and can adopt wired communication or wireless communication between the cable state monitoring device 7 and the data center, and if the wireless communication is adopted, the cable state monitoring device 7 sends the data center through a communication module (DTU).
Example 2
As shown in fig. 4, 5 and 6, this embodiment is a further improvement of the embodiment 1, and specifically is as follows:
the loop current collection unit 5 includes: the shell 510, one side of the shell 510 has concave 513 adapting to the ground wire, a hinge 520 is arranged at the concave 513 above the outer part of the shell 510, in general, the hinge 520 is in a ring structure, one half of the hinge is fixed above the outer part of the shell 510, and the other half of the hinge can be opened so as to sleeve the hinge on the ground wire, the ground wire is positioned in the concave 513, then the hinge 520 is locked from the opened state, the hinge 520 is hooped on the ground wire, and the hinge 520 is mainly used for fixing the circulation current collection unit 5 on the ground wire;
the casing 510 is internally provided with a circulation sensor 530 for measuring circulation in the ground wire, the circulation sensor 530 is preferably in a semi-annular shape, an opening of the circulation sensor 530 faces the concave surface 513, the circulation sensor 530 is perpendicular to the concave surface 513, and when the circulation acquisition unit 5 is fixed on the ground wire, the circulation sensor 530 is perpendicular to the current direction of the ground wire, and the measured current in the ground wire is corresponding to the main cable sheath circulation;
the casing 510 is provided with a voltage polar plate 550 for measuring the voltage in the grounding wire, and the measured voltage in the grounding wire corresponds to the voltage of the main cable sheath;
the concave 513 is embedded with a temperature measuring unit 540 for measuring the surface temperature of the ground wire, and when the circulation collecting unit 5 is fixed on the ground wire, the temperature measuring unit 540 is closely attached to the outer surface of the ground wire;
the wireless communication module 560 is electrically connected with the loop current sensor 530, the temperature measurement unit 540 and the voltage pole plate 550 respectively, the wireless communication module 560 is wirelessly connected with the cable state monitoring device 7, and the wireless communication module 560 collects data in the loop current sensor 530, the temperature measurement unit 540 and the voltage pole plate 550 and sends the data to the cable state monitoring device 7, in this embodiment, the wireless communication module 560 preferably adopts an la module.
Example 3
As shown in fig. 6, this embodiment is a further improvement of the embodiment 2, specifically as follows:
the inner cavity of the shell 510 is divided into two independent areas by a baffle 570, the circulation sensor 530 is positioned in one independent area, the temperature measuring unit 540 and the voltage polar plate 550 are positioned in the other independent area, and the circulation sensor 530 is separated from the temperature measuring unit 540 and the voltage polar plate 550, so that electromagnetic influence among components is reduced, and measurement accuracy is improved.
Example 4
As shown in fig. 4, 5 and 6, this embodiment is a further improvement of the embodiment 2 or 3, and specifically includes the following steps:
the housing 510 includes: the casing 511 and the cover plate 512 detachably arranged on the opening side of the casing 511 and sealing the opening of the casing 511, wherein the cover plate 512 and the casing 511 can be connected by adopting a screw, and of course, other modes, such as a lock catch connection, are not limited explicitly, and in addition, a sealing ring can be additionally arranged between the casing 511 and the cover plate 512 for sealing so as to protect the internal devices; the case 511 has a concave surface 513 on the side opposite to the cover plate 512, and the partition 570 is provided in the case 511.
Example 5
As shown in fig. 6, this embodiment is a further improvement of the embodiment 2, 3 or 4, and is specifically as follows:
the loop current acquisition unit 5 further comprises: a battery 580, the battery 580 being disposed within the housing 510, the battery 580 being electrically connected to the wireless communication module 560, the battery 580 powering the entire loop current collection unit 5.
Example 6
As shown in fig. 1, 2 and 3, this embodiment is a further improvement of any one of embodiments 1 to 5, and specifically includes the following:
the solar cell panel 8 is arranged at the upper end of the junction box main body 1, the solar cell panel 8 is electrically connected with the cable state monitoring equipment 7, and the solar cell panel 8 can supply power for the cable state monitoring equipment 7.
Example 7
As shown in fig. 2 and 3, this embodiment is a further improvement of any one of embodiments 1 to 6, and specifically includes the following:
the junction box main body 1 includes: the cable state monitoring device comprises an outer box 110 and an upper cover 120 arranged at the upper end of the outer box 110, wherein the cable state monitoring device 7 is arranged in the upper cover 120, and the upper cover 120 mainly prevents water from the outer box 110 and the cable state monitoring device 7 inside; the outer case 110 is provided with a first insulating plate 130 and a second insulating plate 140, and the first insulating plate 130 and the second insulating plate 140 can be epoxy plates; a A, B, C grounding wire row 150 and a total grounding wire row 160 are arranged between the first insulating plate 130 and the second insulating plate 140 in the outer box 110, one end of each of the A and B, C grounding wire rows 150 is connected with one end of the total grounding wire row 160, and the other ends of the A, B, C grounding wire row 150 and the total grounding wire row 160 are respectively used as a A, B, C connecting inlet and a total connecting outlet; A. the A, B, C connection inlet of the B, C grounding wire row 150 is respectively connected with the metal sheath layer of the A, B, C phase main cable 3 through the A, B, C grounding wires 2; the total outlet of the total ground line row 160 is grounded via the total ground line 4.
Further: A. b, C the ground lines 150 each comprise: the first wiring copper bar 151, first copper nose 152 and crimping copper block 153, first wiring copper bar 151 is fixed on first insulation board 130, peel A, B, C earth wire 2 tail end crust open in order to expose the metal sheath layer, let A, B, C earth wire 2 tail end metal sheath layer department crimp on second insulation board 140 through crimping copper block 153, peel A, B, C earth wire 2 tail end metal sheath layer and insulating layer expose the sinle silk, then fix the sinle silk of A, B, C earth wire 2 tail end on first insulation board 130 after crimping through first copper nose 152, first wiring copper bar 151 links to each other with first copper nose 152, A, B, C earth wire 2 adopts the cable wire.
The total ground line row 160 includes: the second wiring copper bar 161, the third wiring copper bar 162 and the second copper nose 163, the second wiring copper bar 161 is fixed on the first insulation board 130, the second wiring copper bar 161 is respectively connected with the first wiring copper bar 151 and the third wiring copper bar 162 of the A, B, C grounding wire bar 150, the second copper nose 163 is respectively connected with the wire core of the total grounding wire 4 and the third wiring copper bar 162, and the second copper nose 163 is grounded through the total grounding wire 4, so that the A, B, C grounding wire bar 150 is grounded.
Fault location technique
When a fault occurs, a fault point generates high-frequency traveling waves and propagates to two sides along a line, a power frequency traveling wave two-in-one sensor 6 arranged on the line measures power frequency current and traveling wave current in a A, B, C phase main cable 3 in real time and transmits the power frequency current and traveling wave current to a cable state monitoring device 7, the cable state monitoring device 7 transmits data to a data center, and the data center realizes accurate positioning of the fault point based on a double-end traveling wave positioning principle.
Fig. 7 is a schematic diagram of traveling wave propagation at fault time, and fault point distance:
L1＝(L+(t1-t2)*V)/2
L2＝(L+(t2-t1)*V)/2
wherein L1 is the distance between the fault point and the left sensor, L2 is the distance between the fault point and the right sensor, L is the length of a line between the two sensors, and V is the traveling wave propagation speed.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
Claims (10)
1. High-voltage intelligent grounding box capable of monitoring cable operation state, and is characterized by comprising: the main junction box comprises a main junction box body (1), wherein the head end of a A, B, C grounding wire (2) of the main junction box body (1) is electrically connected with a metal sheath layer of a A, B, C-phase main cable (3) respectively; the A, B, C grounding wire (2) and the total grounding wire (4) are respectively provided with a circulation acquisition unit (5) for measuring current, voltage and skin temperature in the grounding wire; a power frequency traveling wave two-in-one sensor (6) for measuring the power frequency current and the traveling wave current in the A, B, C-phase main cable (3) is respectively arranged on the A, B, C-phase main cable (3); A. three circulation collection units (5) on a B, C grounding wire (2) are respectively and wirelessly connected with three cable state monitoring devices (7) corresponding to A, B, C, the circulation collection units (5) on a total grounding wire (4) are respectively and wirelessly connected with any one cable state monitoring device (7), and three power frequency traveling wave two-in-one sensors (6) on a A, B, C phase main cable (3) are respectively and electrically connected with three cable state monitoring devices (7) corresponding to A, B, C.
2. The high voltage intelligent grounding box capable of monitoring the operation state of a cable according to claim 1, wherein: the loop current acquisition unit (5) comprises: a shell (510), wherein one side of the shell (510) is provided with a concave surface (513) matched with a grounding wire, and a hinge (520) is arranged at the concave surface (513) above the outer part of the shell (510); a circulating current sensor (530) perpendicular to the concave surface (513) and used for measuring circulating current in the grounding wire is arranged in the shell (510), and an opening of the circulating current sensor (530) faces the concave surface (513); a voltage polar plate (550) for measuring the voltage in the grounding wire is arranged in the shell (510); a temperature measuring unit (540) for measuring the surface temperature of the grounding wire is embedded in the concave surface (513); the shell (510) is internally provided with a wireless communication module (560) which is respectively and electrically connected with the circulation sensor (530), the temperature measuring unit (540) and the voltage polar plate (550), and the wireless communication module (560) is in wireless connection with the cable state monitoring equipment (7).
3. The high voltage intelligent grounding box capable of monitoring the operation state of a cable according to claim 2, wherein: the housing (510) has a diaphragm (570) therein separating its interior cavity into two separate areas, the loop sensor (530) being located in one of the separate areas, the temperature measurement unit (540) and the voltage plate (550) being located in the other separate area.
4. A high voltage intelligent grounding box capable of monitoring cable operation state according to claim 3, wherein: the housing (510) includes: a case (511) and a cover plate (512) detachably provided on the opening side of the case (511) and closing the opening thereof; the housing (511) has a concave surface (513) on the side opposite to the cover plate (512), and the partition plate (570) is provided in the housing (511).
5. The high voltage intelligent grounding box capable of monitoring the operation state of a cable according to claim 2, wherein: the loop current acquisition unit (5) further comprises: a battery (580), the battery (580) disposed within the housing (510), the battery (580) electrically connected with the wireless communication module (560).
6. The high-voltage intelligent grounding box capable of monitoring the operation state of a cable according to any one of claims 2 to 5, wherein: the wireless communication module (560) is a lora module.
7. The high-voltage intelligent grounding box capable of monitoring the operation state of a cable according to any one of claims 1 to 5, wherein: the solar cell panel (8) is arranged at the upper end of the junction box main body (1), and the solar cell panel (8) is electrically connected with the cable state monitoring equipment (7).
8. The high-voltage intelligent grounding box capable of monitoring the operation state of a cable according to any one of claims 1 to 5, wherein: the junction box main body (1) includes: the cable state monitoring device comprises an outer box (110) and an upper cover (120) arranged at the upper end of the outer box (110), wherein the cable state monitoring device (7) is arranged in the upper cover (120), a first insulating plate (130) and a second insulating plate (140) are arranged in the outer box (110), a A, B, C grounding wire row (150) and a total grounding wire row (160) are arranged between the first insulating plate (130) and the second insulating plate (140) in the outer box (110), one end of each A, B, C grounding wire row (150) is connected with one end of the total grounding wire row (160), and the other ends of the A, B, C grounding wire rows (150) and the total grounding wire row (160) are respectively used as A, B, C grounding inlets and total grounding outlets; the A, B, C connection inlet of the A, B, C grounding wire row (150) is connected with the metal sheath layer of the A, B, C phase main cable (3) through the A, B, C grounding wires (2); the total grounding outlet of the total grounding wire row (160) is grounded through the total grounding wire (4).
9. The high voltage intelligent grounding box capable of monitoring the operation state of a cable according to claim 8, wherein: the A, B, C ground wire rows (150) each include: the copper wire is characterized by comprising a first wiring copper bar (151), a first copper nose (152) and a crimping copper block (153), wherein the first wiring copper bar (151) is fixed on the first insulation board (130), the metal sheath layer at the tail end of a A, B, C grounding wire (2) is crimped on the second insulation board (140) through the crimping copper block (153), the wire core at the tail end of the A, B, C grounding wire (2) is fixed on the first insulation board (130) after being crimped through the first copper nose (152), and the first wiring copper bar (151) is connected with the first copper nose (152).
10. The high voltage intelligent grounding box capable of monitoring the operation state of a cable according to claim 9, wherein: the total ground line row (160) includes: second wiring copper bar (161), third wiring copper bar (162) and second copper nose (163), second wiring copper bar (161) are fixed on first insulating plate (130), second wiring copper bar (161) respectively with first wiring copper bar (151) and third wiring copper bar (162) of A, B, C earth connection row (150) link to each other, second copper nose (163) respectively with total earth connection (4) sinle silk with third wiring copper bar (162) link to each other, second copper nose (163) are through total earth connection (4) ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321842869.1U CN220382745U (en) | 2023-07-13 | 2023-07-13 | High-voltage intelligent grounding box capable of monitoring cable running state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321842869.1U CN220382745U (en) | 2023-07-13 | 2023-07-13 | High-voltage intelligent grounding box capable of monitoring cable running state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220382745U true CN220382745U (en) | 2024-01-23 |
Family
ID=89559349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321842869.1U Active CN220382745U (en) | 2023-07-13 | 2023-07-13 | High-voltage intelligent grounding box capable of monitoring cable running state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220382745U (en) |
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2023
- 2023-07-13 CN CN202321842869.1U patent/CN220382745U/en active Active
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