CN103441431A - Temporary grounding device of distribution box substation and grounding method - Google Patents
Temporary grounding device of distribution box substation and grounding method Download PDFInfo
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- CN103441431A CN103441431A CN2013103641597A CN201310364159A CN103441431A CN 103441431 A CN103441431 A CN 103441431A CN 2013103641597 A CN2013103641597 A CN 2013103641597A CN 201310364159 A CN201310364159 A CN 201310364159A CN 103441431 A CN103441431 A CN 103441431A
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Abstract
The invention relates to the field of temporary grounding, in particular to a temporary grounding device of a distribution box substation and a grounding method. The temporary grounding device of the distribution box substation is characterized in that when discharging is carried out on a phase A, a phase B and a phase C, a discharging caution link is added. The grounding method comprises the following specific steps of (1) carrying out a check to ensure that conductor hanging parts and a wire clamp are reliably connected with a soft copper wire, and insulating rods meet the requirement for insulation; (2) carrying out a check on a live wire according to the requirements of site rules before operation; (3) hanging the first conductor hanging part on a bus of the phase A after the wire clamp is grounded, wherein when a reliable connecting loop is formed by a bus of the distribution box substation and a ground wire, a discharging indication alarm device on the first conductor hanging part can give out sounds with high decibel to low decibel, when sounds are not given out, or the given sounds are intermittent, a hanging point is in poor contact, and discharging of the phase B or the phase C is carried out after discharging of the bus of the phase A is accomplished. Compared with the prior art, the temporary grounding device of the distribution box substation and the grounding method have the advantages that convenience of operation of temporary grounding and reliability of grounding are ensured, and the installing efficiency of the ground wire is improved when an electric power circuit is in outage operation.
Description
Technical field
The present invention relates to the temporary grounding field in the electric power system power failure operation, relate in particular to a kind of operation of distribution box change and temporary earthing device and the earthing method of accident maintenance.
Background technology
The effect of electric power system installing earth connection is: 1) avoid job site to suffer the reliable and secure measure that incoming call causes the staff to injure suddenly; 2) drain the residual charge of repair apparatus; 3) eliminate the induction static of repair apparatus.It is that operating personnel's electrification is avoided in electric power system, the important technique measure of safeguard work personal security.Along with the electric power network technique development, new distribution box becomes equipment self and generally all disposes earthing device (as grounding switch, earthed switch), but most urban districts are also moved and are treated that the old-fashioned distribution box that transformation is upgraded becomes, when this class 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, be subject to winter and natural environment (cement and bituminous pavement etc.) to affect the ground connection performance difficulty, need complete by instrument, and earthing effect is bad, discharge not thorough.Also have earth terminal to be comprised of bolt and crimp, when fastening with ground stud, ground connection is not very firm, easily comes off and has potential safety hazard.2) conductor of earth connection conductor articulated end: A, B, C three-phase articulates part, be divided into two kinds of forms: a kind of is the crotch form, be applicable to transformer station, switchyard switch load side joint point longitudinal arrangement, a kind of for the clamping plate form is applicable to transformer station, switchyard switch load side joint point is transversely arranged.When for the repairing preparation tool, once the earth connection preparation is improper, be difficult to articulate firmly, can't ensure that the reliable Effect of Short Circuit of three-phase works on, extend the repairing time, reduce operating efficiency.3) earth connection lacks ground connection electric discharge monitoring process, and the conductor of A, B, C three-phase articulates part the virtual connection phenomenon easily occurs, and causes Lou electric discharge, causes potential safety hazard to the upkeep operation personnel.Therefore urgently develop a kind of novel temporary earthing device and earthing method, the ground connection defect while solving and making up operation that distribution box becomes and accident maintenance.
Summary of the invention
The purpose of this invention is to provide a kind of distribution box and become temporary earthing device and earthing method, improve the earthing device structure, being convenient to earth terminal installs, 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 because of the human body electrification incident of injury 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 conductor hanging part one for A, B, C three-phase bus, conductor hanging part two, conductor hanging part three and with the fixing wire clamp of earth terminal, conductor hanging part one, conductor hanging part two, conductor hanging part three and wire clamp connect by annealed copper wire successively, described conductor hanging part one, conductor hanging part two, conductor hanging part three are fixed on respectively the top of insulating bar by movable contact, in movable contact can become according to distribution box, all kinds of high voltage bus models are adjusted the mounting point direction; Be respectively equipped with the electric discharge indicating alarm device on described conductor hanging part one, conductor hanging part two and conductor hanging part three, whether indication ground connection discharge process is normal;
The structure of described wire clamp comprises member one, member two and hinge pin, member one and member two are hinged by hinge pin, the hole coordinated with hinge pin on described member two is slotted hole, make between member one and member two to have two hinged supports, one end of member one and member two corresponding interlocks is jaw, described jaw comprises the planar section that is applicable to angle steel form ground stud and the arch section that is applicable to round steel form ground stud, the arc vice jaw place is provided with the high metal level of leading of profile of tooth, the other end of member one and member two is handle, and handle end is provided with the locking positioner; The member one of jaw side is provided with the annealed copper wire splicing ear;
Described locking positioner comprises locking tooth and hook plate, and the locking tooth is located on member one, and hook plate is located on member two, slides and to realize that the relative position of member one and member two fixes along the locking tooth flank of tooth under external force in the end of hook plate; The handle part of described member one is provided with the elastic construction of one section 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, the bridge-type filtering formed through diode 1-D1, diode 1-D2, diode 1-D4, diode 1-D5 again, export woofer BF to.
Use above-mentioned a kind of distribution box to become the earthing method of temporary earthing device, to A, B, the electric discharge of C three-phase conductor the time, increase electric discharge warning link, avoid occurring articulating the insecure human body electrification accident caused because of ground wire, its concrete steps are as follows:
1) first check and confirm whether conductor hanging part one, conductor hanging part two, conductor hanging part three and wire clamp that distribution box becomes in temporary earthing device are connected with annealed copper wire reliably, and whether insulating bar meets insulating requirements;
2) should dress High-Voltage Insulation footwear and the insulating gloves be up to the standards before the operation, select the electroscope conformed to electrical verification high pressure grade to carry out electrical verification by on-the-spot rules requirement, after detecting certain no-voltage, can carry out ground connection electric discharge operation;
3) use wire clamp ground connection, 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 the electric discharge indicating alarm device do not speak or sound off and on, illustrate that there is loose contact in mounting point, need check processing, after A phase bus discharge, then carry out respectively the electric discharge that B reaches the C phase mutually.
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) installation procedure of distribution box change temporary ground wire earth terminal, installation effectiveness and the Earthing Reliability of earth connection while improving distribution box change power failure operation have been simplified; 3) can meet the ground stud connection requirement that distribution box becomes interior different cross section; 4) can model be installed by bus and adjust ground connection mounting point direction, be convenient to the installation of temporary grounding wire clamp; 4) the ground connection discharge process is traced and monitored, can be avoided occurring because ground wire articulates the insecure human body electrification accident caused.
The 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 the present invention's indicating alarm device embodiment circuit theory schematic diagram that discharges.
In figure: the high metal level 15-locking positioner 16-annealed copper wire splicing ear 17-locking tooth 18-hook plate 19-elastic construction of leading of 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-electric discharge indicating alarm device 9-member one 10-member two 11-hinge pin 12-planar section 13-arch section 14-profiles of tooth
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 with the fixing wire clamp 4 of earth terminal, conductor hanging part 1, conductor hanging part 22, conductor hanging part 33 and wire clamp 4 connect by annealed copper wire 6 successively, conductor hanging part 1, conductor hanging part 22, conductor hanging part 33 is fixed on respectively the top of insulating bar 7 by movable contact 5, in movable contact 5 can become according to distribution box, all kinds of high voltage bus models are adjusted the mounting point direction, improve the applicability of conductor hanging part, be respectively equipped with electric discharge indicating alarm device 8 on conductor hanging part 1, conductor hanging part 22 and conductor hanging part 33, the indication of can sounding when ground connection is discharged, whether indication ground connection discharge process is normal,
See Fig. 2, the structure of wire clamp comprises member 1, member 2 10 and hinge pin 11, member 1 and member 2 10 are hinged by hinge pin 11, the hole coordinated with hinge pin 11 on member 2 10 is slotted hole, make between member 1 and member 2 10 to have two hinged supports, one end of member 1 and member 2 10 corresponding interlocks is jaw, jaw comprises the planar section 12 that is applicable to angle steel form ground stud and the arch section 13 that is applicable to round steel form ground stud, the arc vice jaw place is provided with the high metal level 14 of leading of profile of tooth, the other end of member 1 and member 2 10 is handle, handle end is provided with locking positioner 15, the member 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 should reliably 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 member 1, and hook plate 18 is located on member 2 10, and the end of hook plate 18 realizes that along 17 slips of locking tooth tooth the relative position of member one and member two fixes under external force; The handle part of member 1 is provided with the elastic construction 19 of one section bimetallic riveted, so that jaw obtains enough clamping forces while being in ground connection.
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, the bridge-type filtering formed through diode 1-D1, diode 1-D2, diode 1-D4, diode 1-D5 again, 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 to A, B, the electric discharge of C three-phase conductor the time, increases electric discharge warning link, avoids occurring articulating the insecure human body electrification accident caused because of ground wire, and its concrete steps are as follows:
1) first check and confirm whether conductor hanging part one, conductor hanging part two, conductor hanging part three and wire clamp that distribution box becomes in temporary earthing device are connected with annealed copper wire reliably, and whether insulating bar meets insulating requirements;
2) should dress High-Voltage Insulation footwear and the insulating gloves be up to the standards before the operation, select the electroscope conformed to electrical verification high pressure grade to carry out electrical verification by on-the-spot rules requirement, after detecting certain no-voltage, can carry out ground connection electric discharge operation;
3) use wire clamp ground connection, 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 the electric discharge indicating alarm device do not speak or sound off and on, illustrate that there is loose contact in mounting point, need check processing, after A phase bus discharge, then carry out respectively the electric discharge that B reaches the C phase mutually.
Claims (3)
1. a distribution box becomes temporary earthing device, comprise conductor hanging part one for A, B, C three-phase bus, conductor hanging part two, conductor hanging part three and with the fixing wire clamp of earth terminal, conductor hanging part one, conductor hanging part two, conductor hanging part three and wire clamp connect by annealed copper wire successively, it is characterized in that, described conductor hanging part one, conductor hanging part two, conductor hanging part three are fixed on respectively the top of insulating bar by movable contact, in movable contact can become according to distribution box, all kinds of high voltage bus models are adjusted the mounting point direction;
Be respectively equipped with the electric discharge indicating alarm device on described conductor hanging part one, conductor hanging part two and conductor hanging part three, whether indication ground connection discharge process is normal;
The structure of described wire clamp comprises member one, member two and hinge pin, member one and member two are hinged by hinge pin, the hole coordinated with hinge pin on described member two is slotted hole, make between member one and member two to have two hinged supports, one end of member one and member two corresponding interlocks is jaw, described jaw comprises the planar section that is applicable to angle steel form ground stud and the arch section that is applicable to round steel form ground stud, the arc vice jaw place is provided with the high metal level of leading of profile of tooth, the other end of member one and member two is handle, and handle end is provided with the locking positioner; The member one of jaw side is provided with the annealed copper wire splicing ear;
Described locking positioner comprises locking tooth and hook plate, and the locking tooth is located on member one, and hook plate is located on member two, slides and to realize that the relative position of member one and member two fixes along the locking tooth flank of tooth under external force in the end of hook plate; The handle part of described member one is provided with the elastic construction of one section bimetallic riveted.
2. a kind of distribution box according to claim 1 becomes temporary earthing device, it is characterized in that, 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, the bridge-type filtering formed through diode 1-D1, diode 1-D2, diode 1-D4, diode 1-D5 again, export woofer BF to.
3. the earthing method of a distribution box change temporary earthing device, is characterized in that, to A, B, the electric discharge of C three-phase conductor the time, increases electric discharge warning link, avoids appearance to articulate the insecure human body electrification accident caused because of ground wire, and its concrete steps are as follows:
1) first check and confirm whether conductor hanging part one, conductor hanging part two, conductor hanging part three and wire clamp that distribution box becomes in temporary earthing device are connected with annealed copper wire reliably, and whether insulating bar meets insulating requirements;
2) should dress High-Voltage Insulation footwear and the insulating gloves be up to the standards before the operation, select the electroscope conformed to electrical verification high pressure grade to carry out electrical verification by on-the-spot rules requirement, after detecting certain no-voltage, can carry out ground connection electric discharge operation;
3) use wire clamp ground connection, 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 the electric discharge indicating alarm device do not speak or sound off and on, illustrate that there is loose contact in mounting point, need check processing, after A phase bus discharge, then carry out respectively the electric discharge that B reaches the C phase mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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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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| 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 true CN103441431A (en) | 2013-12-11 |
| CN103441431B CN103441431B (en) | 2015-09-23 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069259A (en) * | 2016-12-12 | 2017-08-18 | 国网北京市电力公司 | Portable ground wire |
| CN108318769A (en) * | 2018-04-17 | 2018-07-24 | 国网河南省电力公司电力科学研究院 | A kind of intelligent substation busbar protective device pressing plate state alarm method and device |
| 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 |
| CN113727569A (en) * | 2021-08-03 | 2021-11-30 | 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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| 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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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107069259A (en) * | 2016-12-12 | 2017-08-18 | 国网北京市电力公司 | Portable ground wire |
| CN107069259B (en) * | 2016-12-12 | 2019-05-24 | 国网北京市电力公司 | Portable ground line |
| CN108318769A (en) * | 2018-04-17 | 2018-07-24 | 国网河南省电力公司电力科学研究院 | A kind of intelligent substation busbar protective device pressing plate state alarm method and device |
| 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 |
| CN113727569A (en) * | 2021-08-03 | 2021-11-30 | 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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| CN103441431B (en) | 2015-09-23 |
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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 |