CN103441431B - A kind of distribution box becomes temporary earthing device and earthing method - Google Patents
A kind of distribution box becomes temporary earthing device and earthing method Download PDFInfo
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- CN103441431B CN103441431B CN201310364159.7A CN201310364159A CN103441431B CN 103441431 B CN103441431 B CN 103441431B CN 201310364159 A CN201310364159 A CN 201310364159A CN 103441431 B CN103441431 B CN 103441431B
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Abstract
The present invention relates to temporary grounding field, particularly relate to a kind of distribution box and become temporary earthing device and earthing method, it is characterized in that, when to A, B, C tri-phase discharge, increase electric discharge warning link, its concrete steps are as follows: 1) first check that conductor hanging part and wire clamp are connected reliably with annealed copper wire, insulating bar meets insulating requirements; 2) electrical verification is carried out by on-the-spot regulatory requirements before operation; 3) after wire clamp ground connection, conductor hanging part one is articulated on A phase bus, when distribution box bus voltage and ground wire form reliable link circuit, electric discharge indicating alarm device on conductor hanging part one can send by high and low sound, do not speak or sound off and on, illustrate that mounting point exists loose contact, after A phase bus discharge, then carry out the electric discharge of B phase and C phase respectively.Compared with prior art, advantage of the present invention is: while the guarantee operation convenience of temporary grounding and the reliability of ground connection, improves the installation effectiveness of earth connection during power circuit power failure operation.
Description
Technical field
The present invention relates to the temporary grounding field in electric power system power failure operation, particularly relate to operation and the temporary earthing device of accident maintenance and earthing method that a kind of distribution box becomes.
Background technology
The effect of electric power system installing earth connection is: 1) avoid job site to suffer to send a telegram here suddenly the reliable and secure measure causing staff to injure; 2) residual charge of repair apparatus is drained; 3) the induction electrostatic of repair apparatus is eliminated.It is that operating personnel's electrification is avoided in electric power system, the important technique measure of safeguard work personal security.Along with electric power network technique development, new distribution box becomes equipment self and is generally all configured with earthing device (as grounding switch, earthed switch), but the old-fashioned distribution box that renewal to be rebuilt is also run in most urban district becomes, when this kind of distribution box becomes upkeep operation and accident maintenance, also need to install traditional ground connection, its shortcoming: 1) ground connection end: have plenty of and directly insert underground with crooked chisel, ground connection performance difficulty is affected by winter and natural environment (cement and bituminous pavement etc.), need complete by instrument, and earthing effect is bad, discharge not thorough.Also have earth terminal to be made up of bolt and crimp, time fastening with ground stud, ground connection is not very firm, easily comes off and there is potential safety hazard.2) earth connection conductor articulated end: the conductor mounting part of A, B, C three-phase, be divided into two kinds of forms: one is crotch form, be applicable to transformer station, switchyard switch load side joint point longitudinal arrangement, a kind of for clamping plate form be applicable to transformer station, switchyard switch load side joint point is transversely arranged.When for repairing preparation tool, once earth connection preparation is improper, is difficult to mounting firmly, cannot ensures that the reliable Effect of Short Circuit of three-phase works on, extend emergency repair time, reduction operating efficiency.3) earth connection lacks ground connection electric discharge monitoring process, and the conductor mounting part of A, B, C three-phase easily virtual connection phenomenon occurs, and cause and Lou discharge, to upkeep operation, personnel cause potential safety hazard.Therefore urgently develop a kind of novel temporary earthing device and earthing method, solve and make up ground connection defect during operation and the accident maintenance of distribution box change.
Summary of the invention
The object of this invention is to provide a kind of distribution box and become temporary earthing device and earthing method, improve grounding device constructions, be convenient to earth terminal install, be applicable to distribution box and become interior all kinds of high voltage bus, increase electric discharge simultaneously and monitor link, improve the reliability of ground connection electric discharge, avoid the generation of the human body electrification incident of injury because of earth connection virtual connection initiation.
For achieving the above object, the present invention realizes by the following technical solutions:
A kind of distribution box becomes temporary earthing device, comprise for the conductor hanging part one of A, B, C three-phase bus, conductor hanging part two, conductor hanging part three and the wire clamp fixing with earth terminal, conductor hanging part one, conductor hanging part two, conductor hanging part three and wire clamp are connected by annealed copper wire successively, described conductor hanging part one, conductor hanging part two, conductor hanging part three are fixed on the top of insulating bar respectively by movable contact, movable contact is all kinds of high voltage bus model adjustment mounting point direction in can becoming according to distribution box; Described conductor hanging part one, conductor hanging part two and conductor hanging part three are respectively equipped with electric discharge indicating alarm device, and whether instruction ground connection discharge process is normal;
The structure of described wire clamp comprises component one, component two and hinge pin, it is hinged that component one and component two pass through hinge pin, the hole that described component two coordinates with hinge pin is elongated hole, make that there are between component one and component two two hinged supports, one end of component one and the occlusion of component two correspondence is jaw, described jaw comprises the planar section being applicable to angle steel form ground stud and the arch section being applicable to round steel form ground stud, arc vice jaw place is provided with that profile of tooth is high leads metal level, the other end of component one and component two is handle, and handle end is provided with locking positioner; The component one of jaw side is provided with annealed copper wire splicing ear;
Described locking positioner comprises locking tooth and hook plate, and locking tooth is located on component one, and hook plate is located on component two, and the relative position that the end of hook plate realizes component one and component two along the slip of the locking tooth flank of tooth is under external force fixed; The handle part of described component one is provided with the elastic construction of one section of bimetallic riveted.
Described electric discharge indicating alarm device coil 1-L1 two ends and electric capacity 1-C1, resistance 1-R1, resistance 1-R2 connect to form high-pass filtering, again through the bridge-type filtering that diode 1-D1, diode 1-D2, diode 1-D4, diode 1-D5 are formed, export woofer BF to.
Using above-mentioned a kind of distribution box to become the earthing method of temporary earthing device, when discharging to A, B, C three-phase conductor, increasing electric discharge warning link, avoid occurring that its concrete steps are as follows because of the insecure human body electrification accident caused of ground wire mounting:
1) first check whether conductor hanging part one, conductor hanging part two, conductor hanging part three and wire clamp that confirmation distribution box becomes in temporary earthing device are connected reliably with annealed copper wire, and whether insulating bar meets insulating requirements;
2) the High-Voltage Insulation footwear and insulating gloves that are up to the standards should be dressed before operation, select the electroscope conformed to electrical verification high pressure level to carry out electrical verification by on-the-spot regulatory requirements, when after the certain no-voltage of detection, ground connection electric discharge operation can be carried out;
3) wire clamp ground connection is used, after confirming that ground connection is good, first conductor hanging part one is articulated on A phase bus, when distribution box bus voltage and ground wire form reliable link circuit, the electric discharge indicating alarm device on conductor hanging part one can send by high and low sound, when electric discharge indicating alarm device do not speak or sound off and on, illustrate that mounting point exists loose contact, need check processing, after A phase bus discharge, then carry out the electric discharge of B phase and C phase respectively.
Compared with prior art, the invention has the beneficial effects as follows: 1) distribution box change temporary earthing device volume is little, easy to use; 2) simplify the installation procedure that distribution box becomes temporary ground wire earth terminal, improve installation effectiveness and the Earthing Reliability of earth connection during distribution box change power failure operation; 3) the ground stud connection requirement that distribution box becomes interior different cross section can be met; 4) by bus, model adjustment ground connection mounting point direction can be installed, be convenient to the installation of temporary grounding wire clamp; 4) ground connection discharge process is traced and monitored, can avoid because the insecure human body electrification accident caused of ground wire mounting occurs.
Accompanying drawing explanation
Fig. 1 is a kind of power circuit temporary earthing device of the present invention example structure schematic diagram;
Fig. 2 is wire clamp example structure schematic diagram of the present invention;
Fig. 3 is that the present invention discharges indicating alarm device embodiment circuit theory schematic diagram.
In figure: 1-conductor hanging part one 2-conductor hanging part two 3-conductor hanging part three 4-wire clamp 5-movable contact 6-annealed copper wire 7-insulating bar 8-discharges, and indicating alarm device 9-component one 10-component two 11-hinge pin 12-planar section 13-arch section 14-profile of tooth is high leads metal level 15-locking positioner 16-annealed copper wire splicing ear 17-locking tooth 18-hook plate 19-elastic construction
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:
See Fig. 1, that a kind of distribution box of the present invention becomes temporary earthing device example structure schematic diagram, comprise for A, B, the conductor hanging part 1 of C three-phase bus, conductor hanging part 22, conductor hanging part 33 and the wire clamp 4 fixing with earth terminal, conductor hanging part 1, conductor hanging part 22, conductor hanging part 33 and wire clamp 4 are connected by annealed copper wire 6 successively, conductor hanging part 1, conductor hanging part 22, conductor hanging part 33 is fixed on the top of insulating bar 7 respectively by movable contact 5, movable contact 5 is all kinds of high voltage bus model adjustment mounting point direction in can becoming according to distribution box, improve the applicability of conductor hanging part, conductor hanging part 1, conductor hanging part 22 and conductor hanging part 33 are respectively equipped with electric discharge indicating alarm device 8, instruction of can sounding when ground connection is discharged, whether instruction ground connection discharge process is normal,
See Fig. 2, the structure of wire clamp comprises component 1, component 2 10 and hinge pin 11, it is hinged that component 1 and component 2 10 pass through hinge pin 11, the hole that component 2 10 coordinates with hinge pin 11 is elongated hole, make that there are between component 1 and component 2 10 two hinged supports, one end of component 1 and the occlusion of component 2 10 correspondence is jaw, jaw comprises the planar section 12 being applicable to angle steel form ground stud and the arch section 13 being applicable to round steel form ground stud, arc vice jaw place is provided with that profile of tooth is high leads metal level 14, the other end of component 1 and component 2 10 is handle, handle end is provided with locking positioner 15, the component 1 of jaw side is provided with annealed copper wire splicing ear 16, and the high metal level 14 of leading of profile of tooth reliably should be connected with annealed copper wire splicing ear 16,
Locking positioner 15 comprises locking tooth 17 and hook plate 18, and locking tooth 17 is located on component 1, and hook plate 18 is located on component 2 10, and the relative position that the end of hook plate 18 realizes component one and component two along 17 slips of locking tooth tooth is under external force fixed; The handle part of component 1 is provided with the elastic construction 19 of one section of bimetallic riveted, obtains enough clamping forces when being in ground connection to make jaw.
See Fig. 3, electric discharge indicating alarm device coil 1-L1 two ends and electric capacity 1-C1, resistance 1-R1, resistance 1-R2 connect to form high-pass filtering, again through the bridge-type filtering that diode 1-D1, diode 1-D2, diode 1-D4, diode 1-D5 are formed, export woofer BF to.Coil 1-L1 gathers discharging current on the wire between conductor hanging part and annealed copper wire 6.
A kind of distribution box of the present invention becomes the earthing method of temporary earthing device, is when discharging to A, B, C three-phase conductor, increases electric discharge warning link, avoids occurring that its concrete steps are as follows because of the insecure human body electrification accident caused of ground wire mounting:
1) first check whether conductor hanging part one, conductor hanging part two, conductor hanging part three and wire clamp that confirmation distribution box becomes in temporary earthing device are connected reliably with annealed copper wire, and whether insulating bar meets insulating requirements;
2) the High-Voltage Insulation footwear and insulating gloves that are up to the standards should be dressed before operation, select the electroscope conformed to electrical verification high pressure level to carry out electrical verification by on-the-spot regulatory requirements, when after the certain no-voltage of detection, ground connection electric discharge operation can be carried out;
3) wire clamp ground connection is used, after confirming that ground connection is good, first conductor hanging part one is articulated on A phase bus, when distribution box bus voltage and ground wire form reliable link circuit, the electric discharge indicating alarm device on conductor hanging part one can send by high and low sound, when electric discharge indicating alarm device do not speak or sound off and on, illustrate that mounting point exists loose contact, need check processing, after A phase bus discharge, then carry out the electric discharge of B phase and C phase respectively.
Claims (1)
1. the earthing method of a distribution box change temporary earthing device, described distribution box becomes temporary earthing device, comprise for A, B, the conductor hanging part one of C three-phase bus, conductor hanging part two, conductor hanging part three and the wire clamp fixing with earth terminal, conductor hanging part one, conductor hanging part two, conductor hanging part three and wire clamp are connected by annealed copper wire successively, described conductor hanging part one, conductor hanging part two, conductor hanging part three is fixed on the top of insulating bar respectively by movable contact, movable contact is all kinds of high voltage bus model adjustment mounting point direction in can becoming according to distribution box,
Described conductor hanging part one, conductor hanging part two and conductor hanging part three are respectively equipped with electric discharge indicating alarm device, and whether instruction ground connection discharge process is normal;
The structure of described wire clamp comprises component one, component two and hinge pin, it is hinged that component one and component two pass through hinge pin, the hole that described component two coordinates with hinge pin is elongated hole, make that there are between component one and component two two hinged supports, one end of component one and the occlusion of component two correspondence is jaw, described jaw comprises the planar section being applicable to angle steel form ground stud and the arch section being applicable to round steel form ground stud, arc vice jaw place is provided with that profile of tooth is high leads metal level, the other end of component one and component two is handle, and handle end is provided with locking positioner; The component one of jaw side is provided with annealed copper wire splicing ear;
Described locking positioner comprises locking tooth and hook plate, and locking tooth is located on component one, and hook plate is located on component two, and the relative position that the end of hook plate realizes component one and component two along the slip of the locking tooth flank of tooth is under external force fixed; The handle part of described component one is provided with the elastic construction of one section of bimetallic riveted;
Described distribution box becomes the earthing method of temporary earthing device, it is characterized in that, when discharging to A, B, C three-phase conductor, increases electric discharge warning link, avoids occurring that its concrete steps are as follows because of the insecure human body electrification accident caused of ground wire mounting:
1) first check whether conductor hanging part one, conductor hanging part two, conductor hanging part three and wire clamp that confirmation distribution box becomes in temporary earthing device are connected reliably with annealed copper wire, and whether insulating bar meets insulating requirements;
2) the High-Voltage Insulation footwear and insulating gloves that are up to the standards should be dressed before operation, select the electroscope conformed to electrical verification high pressure level to carry out electrical verification by on-the-spot regulatory requirements, when after the certain no-voltage of detection, ground connection electric discharge operation can be carried out;
3) wire clamp ground connection is used, after confirming that ground connection is good, first conductor hanging part one is articulated on A phase bus, when distribution box bus voltage and ground wire form reliable link circuit, the electric discharge indicating alarm device on conductor hanging part one can send by high and low sound, when electric discharge indicating alarm device do not speak or sound off and on, illustrate that mounting point exists loose contact, need check processing, after A phase bus discharge, then carry out the electric discharge of B phase and C phase respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310364159.7A CN103441431B (en) | 2013-08-20 | 2013-08-20 | A kind of distribution box becomes temporary earthing device and earthing method |
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| CN201310364159.7A CN103441431B (en) | 2013-08-20 | 2013-08-20 | A kind of distribution box becomes temporary earthing device and earthing method |
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| CN103441431A CN103441431A (en) | 2013-12-11 |
| CN103441431B true CN103441431B (en) | 2015-09-23 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069259B (en) * | 2016-12-12 | 2019-05-24 | 国网北京市电力公司 | Portable ground line |
| CN108318769B (en) * | 2018-04-17 | 2020-08-28 | 国网河南省电力公司电力科学研究院 | Pressing plate state warning method and device for bus protection device of intelligent substation |
| CN108923142A (en) * | 2018-08-31 | 2018-11-30 | 国网河南省电力公司桐柏县供电公司 | A kind of electric power temporary grounding stake |
| CN112003038A (en) * | 2020-08-14 | 2020-11-27 | 广东电网有限责任公司 | Capacitor discharging device and discharging method thereof |
| CN113727569B (en) * | 2021-08-03 | 2022-11-04 | 安徽海兴科技设备有限公司 | Rack chute and rack convenient to spacing pivoted of electric wire |
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| CN2771868Y (en) * | 2005-04-20 | 2006-04-12 | 刘金勇 | Domestic power illegal-use-preventing device |
| EP2102953A1 (en) * | 2006-12-21 | 2009-09-23 | Siemens Aktiengesellschaft | Earthing device for earthing electrical components installed in a chain |
| CN202384510U (en) * | 2011-12-16 | 2012-08-15 | 李军 | Grounding device for overhauling overhead line |
| CN102882027A (en) * | 2012-07-31 | 2013-01-16 | 辽宁省电力有限公司鞍山供电公司 | Temporary earthing clamp device |
| CN203386910U (en) * | 2013-08-20 | 2014-01-08 | 国家电网公司 | Power distribution box-type substation temporary grounding device |
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2013
- 2013-08-20 CN CN201310364159.7A patent/CN103441431B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2771868Y (en) * | 2005-04-20 | 2006-04-12 | 刘金勇 | Domestic power illegal-use-preventing device |
| EP2102953A1 (en) * | 2006-12-21 | 2009-09-23 | Siemens Aktiengesellschaft | Earthing device for earthing electrical components installed in a chain |
| CN202384510U (en) * | 2011-12-16 | 2012-08-15 | 李军 | Grounding device for overhauling overhead line |
| CN102882027A (en) * | 2012-07-31 | 2013-01-16 | 辽宁省电力有限公司鞍山供电公司 | Temporary earthing clamp device |
| CN203386910U (en) * | 2013-08-20 | 2014-01-08 | 国家电网公司 | Power distribution box-type substation temporary grounding device |
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Inventor after: Sun Daojun Inventor after: Yang Yin Inventor after: Liu Tiandong Inventor after: Sun Chao Inventor after: Shang Erjun Inventor after: Wang Gang Inventor after: Zhang Liangui Inventor after: Han Jiyang Inventor before: Sun Daojun Inventor before: Yang Yin Inventor before: Liu Tiandong Inventor before: Sun Chao Inventor before: Shang Erjun Inventor before: Wang Gang Inventor before: Zhang Liangui |
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Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: Anshan Power Supply Company of State Grid Liaoning Electric Power Company Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: ANSHAN POWER SUPPLY COMPANY, LIAONING ELECTRIC POWER Co.,Ltd. |
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Address after: 114002 Anshan South Road, Tiedong District, Liaoning, Shengli Road, No. 52 Patentee after: Anshan Power Supply Company of State Grid Liaoning Electric Power Company Patentee after: State Grid Corporation of China Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: Anshan Power Supply Company of State Grid Liaoning Electric Power Company |