CN108508257B - Discharge counter access system capable of being replaced in electrified mode - Google Patents
Discharge counter access system capable of being replaced in electrified mode Download PDFInfo
- Publication number
- CN108508257B CN108508257B CN201810361055.3A CN201810361055A CN108508257B CN 108508257 B CN108508257 B CN 108508257B CN 201810361055 A CN201810361055 A CN 201810361055A CN 108508257 B CN108508257 B CN 108508257B
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- China
- Prior art keywords
- discharge counter
- double
- mounting box
- knife
- fixedly connected
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910052742 iron Inorganic materials 0.000 claims abstract description 15
- 239000004020 conductor Substances 0.000 claims abstract description 13
- 238000009434 installation Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000008030 elimination Effects 0.000 abstract description 4
- 238000003379 elimination reaction Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 10
- 208000012260 Accidental injury Diseases 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/17—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values giving an indication of the number of times this occurs, i.e. multi-channel analysers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The invention discloses a discharge counter access system capable of being replaced in an electrified mode, which comprises a discharge counter, a mounting box and a single-knife double-throw knife switch, wherein the discharge counter and the single-knife double-throw knife switch are fixedly connected in the mounting box, the single-knife double-throw knife switch is in star connection, two input ends are respectively connected to a connecting conductor, the upper two output ends are respectively connected with a power end and a grounding end of the discharge counter, the next left output end is connected to a grounding flat iron, the mounting box is fixedly connected to an electric pole, the connecting conductor penetrates out of the mounting box and then is connected to a lightning arrester, the lightning arrester is fixedly connected to an insulating base, the insulating base is connected to the electric pole through a fixing support, and the upper end of the grounding flat iron is fixedly connected to the fixing support. The invention realizes the maintenance and replacement of the counter under the condition of no power failure, can realize the live operation replacement of the counter for the lightning arrester, greatly improves the defect elimination rate, reduces the running risk of the power grid, and has the characteristics of simple structure, low cost and convenient and quick operation.
Description
Technical Field
The invention belongs to the technical field of counter devices, and particularly relates to a discharge counter access system capable of being replaced in an electrified mode.
Background
In the electric power system, a discharge counter (or leakage current monitor, hereinafter collectively referred to as "discharge counter" or "counter") dedicated to an arrester is widely used. According to years of operation experience and statistics, the probability of faults and defects of the special discharge counter of the lightning arrester in the transformer substation is high, and the fault probability is more than 90% of the total number of defects of the lightning arrester equipment.
The traditional counter connection mode special for the lightning arrester is that the top end of an insulating base of the lightning arrester is connected to the high-voltage end of the counter, then the counter is grounded (as shown in a schematic diagram of fig. 13), after the special discharge counter for the lightning arrester is defective, an maintainer needs to cut off the power of the lightning arrester to an overhaul state to carry out defect treatment on the discharge counter, and the lightning arrester is often directly connected with the high-voltage part through a conductor (except most bus voltage transformer units), so that the power failure of the lightning arrester means the power failure of a high-voltage circuit or a main transformer unit, and the power failure overhaul mode leads to low defect elimination rate and high power grid operation risk.
Disclosure of Invention
The invention solves the technical problems that: the utility model provides a but electrified change's discharge counter access system can realize electrified change operation, improves the defect elimination rate, reduces electric wire netting running risk to solve the problem that exists among the above-mentioned prior art.
The technical scheme adopted by the invention is as follows: the utility model provides a but live replacement's counter access system that discharges, including counter, mounting box and single sword double-throw switch, counter and the equal fixed connection of single sword double-throw switch are in the mounting box that discharges, single sword double-throw switch is star connection, two input are connected to the connecting conductor respectively, last two output are the power end and the earthing terminal of counter that discharge respectively, next left side output is connected to the ground band iron, mounting box fixed connection is on the pole, connecting conductor wears out and is connected to the arrester behind the mounting box, arrester fixed connection is on insulating base, insulating base passes through the fixed bolster and is connected to the pole, ground band iron upper end fixed connection is on the fixed bolster.
Preferably, the discharge counter is connected to the inside of the mounting box through a mounting plate.
Preferably, the single-blade double-throw disconnecting link comprises a double-blade moving contact, the double-blade moving contact is rotatably connected to a disconnecting link plate, two input ends of the double-blade moving contact are electrically connected to two middle wire holders, the left and right ends of the two middle wire holders are respectively connected to a connecting conductor and a grounding flat iron, the disconnecting link plate is provided with two upper wire holders connected with two output ends and two lower wire holders connected with two lower output ends, the left and right ends of the two upper wire holders are respectively connected to a power end and a grounding end of a discharge counter, the left ends of the two lower wire holders are connected to the grounding flat iron, and the right ends of the two lower wire holders are insulating supporting blocks.
Preferably, the knife flashboard is fixedly connected to the supporting plate through bolts, and the supporting plate is fixedly connected to the mounting box.
Preferably, the mounting plate is fixedly connected to the mounting box through a screw, a plurality of horizontal strip-shaped through holes are formed in the mounting plate, rectangular through holes are formed in the middle of the mounting plate, and the horizontal strip-shaped through holes can be opposite to the mounting holes of the discharge counter and are fixed through bolts.
Preferably, the mounting plate is connected to the mounting box through four screws, and the screws and the mounting plate are locked through double nuts.
The invention has the beneficial effects that: compared with the prior art, the invention has the following effects:
1) The invention realizes the use state of the counter for the lightning arrester by arranging the single-knife double-throw disconnecting link in star connection, closes downwards, hangs the counter in the air, grounds the lightning arrester, realizes the maintenance and replacement of the counter under the condition of no power failure, can realize the live operation replacement of the counter for the lightning arrester, greatly improves the defect elimination rate, reduces the running risk of a power grid, and has the characteristics of simple structure, low cost and convenient and fast operation;
2) According to the counter mounting structure, the mounting plates which are fully paved with the horizontal strip-shaped through holes and the rectangular through holes are arranged in the middle of the counter mounting structure, so that the counter mounting structure can adapt to counter mounting for lightning arresters with different specifications and sizes, is wide in application range, easy to mount, greatly improves the mounting efficiency, is low in operation risk and greatly reduces the equipment cost;
3) According to the invention, the star-connected single-knife double-throw disconnecting link is adopted, one output end of the single-knife double-throw disconnecting link is suspended, the linkage suspension of the grounding end and the power supply end of the discharge counter is realized, the accidental injury of ground potential lifting to an maintainer possibly generated during the action of the lightning arrester is effectively avoided, the misoperation and the electric shock are effectively avoided through the disconnecting link of the structure, and compared with the operation of a single-phase disconnecting link, the single-phase disconnecting link is more time-saving and labor-saving in use due to the linkage action.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a left side view of the present invention;
FIG. 3 is a schematic diagram of a counter mounting structure;
FIG. 4 is a schematic diagram of a front view of a counter installation;
FIG. 5 is a schematic diagram of a front view of a knife switch;
FIG. 6 is a schematic diagram of a right-hand view structure of the knife switch;
FIG. 7 is a schematic diagram of the operation state of the discharge counter;
FIG. 8 is a schematic diagram of a discharge counter maintenance state;
FIG. 9 is a schematic view of a mounting box structure;
FIG. 10 is a schematic perspective view of a mounting box;
FIG. 11 is a right side view of the mounting box;
FIG. 12 is a schematic diagram of the knife switch circuit connection principle;
fig. 13 is a schematic diagram of a conventional counter connection structure.
In the figure, a 1-discharge counter, a 2-mounting box, a 3-single-blade double-throw disconnecting link, a 4-connecting conductor, a 5-grounding flat iron, a 6-electric pole, a 7-lightning arrester, an 8-insulating base, a 9-fixing support, a 10-mounting plate, a 11-horizontal strip-shaped through hole, a 12-rectangular through hole, a 13-screw rod and a 14-double nut;
301-double-disconnecting link moving contact, 302-disconnecting link plate, 303-two middle wire holders, 304-two upper wire holders, 305-two lower wire holders and 306-supporting plate.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific examples.
Example 1: as shown in fig. 1-13, the electric discharge counter access system capable of being replaced in an electrified manner comprises a discharge counter 1, a mounting box 2 and a single-blade double-throw knife switch 3, wherein the discharge counter 1 and the single-blade double-throw knife switch 3 are fixedly connected in the mounting box 2, the single-blade double-throw knife switch 3 is in star connection, two input ends are respectively connected to a connecting conductor 4, the upper two output ends are respectively connected with a power end and a grounding end of the discharge counter 1, the next left output end is connected to a grounding flat iron 5, the mounting box 2 is fixedly connected to an electric pole 6 through a mounting frame 15, the mounting frame 15 is of an I-shaped structure, the installation is convenient, the connection is stable and reliable, the connecting conductor 4 penetrates out of the mounting box 2 and then is connected to a lightning arrester 7, the lightning arrester 7 is fixedly connected to an insulating base 8, the insulating base 8 is connected to the electric pole 6 through a fixing bracket 9, and the upper end of the grounding flat iron 5 is fixedly connected to the fixing bracket 9.
Preferably, the discharge counter 1 is connected to the inside of the mounting case 2 through the mounting plate 10.
Preferably, the single-blade double-throw disconnecting link 3 includes a double-blade moving contact 301, the double-blade moving contact 301 is rotatably connected to a disconnecting link plate 302, two input ends of the double-blade moving contact 301 are electrically connected to two middle wire holders 303, left and right ends of the two middle wire holders 303 are respectively connected to a connecting conductor 4 and a grounding flat iron 5, the disconnecting link plate 302 is provided with two upper wire holders 304 connected to two output ends and two lower wire holders 305 connected to two lower output ends, left and right ends of the two upper wire holders 304 are respectively connected to a power end and a grounding end of a discharge counter 1, left ends of the two lower wire holders 305 are connected to the grounding flat iron 5, right ends of the two lower wire holders 305 are insulating supporting blocks, during maintenance, the double-blade moving contact 301 is closed downwards, the right ends are not connected in a hanging manner, the electric isolation hanging of the discharge counter is realized, accidental injury of maintenance personnel caused by ground potential lifting when the lightning arrester acts is effectively avoided, the double-blade moving contact 301 can be electrically connected to the upper wire holders and the two lower wire holders 305, and the electric shock structure is avoided.
Preferably, the blade plate 302 is fixedly connected to the support plate 306 by bolts, and the support plate 306 is fixedly connected to the mounting box 2.
The double-knife switch moving contact 301 uses the principle: 1) When the counter operates normally, the single-knife double-throw switch of the star connection is switched on upwards (as shown in figure 3), and at the moment, the lightning arrester base is changed to 1-2, the power supply end of the counter is changed to the grounding end of the counter, and the working loop is formed by the grounding of 3-4; 2) When the counter needs to be replaced or overhauled, the single-knife double-throw disconnecting link of the star connection is switched on downwards (as shown in fig. 4), at the moment, the lightning arrester base is in the range of 1 to 5, the lightning arrester base is in the range of grounding operation, and the counter is completely suspended to the ground, so that the operation of overhaulers is convenient.
Preferably, the mounting plate 10 is fixedly connected to the mounting box 2 through a screw 13, a plurality of horizontal bar-shaped through holes 11 are formed in the mounting plate 10, a rectangular through hole 12 is formed in the middle of the mounting plate 10, the horizontal bar-shaped through holes 11 can be opposite to the mounting holes of the discharge counter 6 and are fixed through bolts, and the rectangular through holes 12 can penetrate through parts at the rear of the counter, so that the counter can be conveniently mounted.
Preferably, the mounting plate 10 is connected to the mounting box 2 through four screws 13, and the screws 13 and the mounting plate 10 are locked through double nuts 14, so that the connection is reliable and stable.
Preferably, a door is provided on the front side of the mounting box 2, a transparent plate 16, a heat dissipation hole 17 and a lock 18 are provided on the door, and a dust-proof and rain-proof cover 19 is provided on the top of the mounting box 2.
The above description is only an example of the embodiment of the present invention, and the scope of the present invention is not limited thereto. Variations and alternatives can be readily ascertained by one skilled in the art within the scope of the present disclosure, which is intended to be within the scope of the present disclosure. For this purpose, the scope of the invention shall be subject to the scope of the claims.
Claims (5)
1. An electrified replaceable discharge counter access system, characterized by: the electric discharge device comprises a discharge counter (1), a mounting box (2) and a single-knife double-throw disconnecting link (3), wherein the discharge counter (1) and the single-knife double-throw disconnecting link (3) are fixedly connected in the mounting box (2), the single-knife double-throw disconnecting link (3) is in star connection, two input ends are respectively connected to a connecting conductor (4), the upper two output ends are respectively connected with a power end and a grounding end of the discharge counter (1), the next left output end is connected to a grounding flat iron (5), the mounting box (2) is fixedly connected to an electric pole (6), the connecting conductor (4) penetrates out of the mounting box (2) and then is connected to a lightning arrester (7), the lightning arrester (7) is fixedly connected to an insulating base (8), the insulating base (8) is connected to the electric pole (6) through a fixing support (9), and the upper end of the grounding flat iron (5) is fixedly connected to the fixing support (9). The discharge counter (1) is connected into the mounting box (2) through the mounting plate (10), and a dustproof and rainproof cover (19) is arranged at the top of the mounting box (2).
2. A live replaceable discharge counter access system according to claim 1, wherein: the single-knife double-throw disconnecting link (3) comprises a double-knife-switch moving contact (301), the double-knife-switch moving contact (301) is rotatably connected to a disconnecting link plate (302), two input ends of the double-knife-switch moving contact (301) are electrically connected to two middle wire holders (303), the left end and the right end of the two middle wire holders (303) are respectively connected to a connecting conductor (4) and a grounding flat iron (5), the disconnecting link plate (302) is provided with two upper wire holders (304) connected with two output ends and two lower wire holders (305) connected with two lower output ends, the left end and the right end of the two upper wire holders (304) are respectively connected to a power end and a grounding end of a discharge counter (1), the left end of the two lower wire holders (305) are connected to the grounding flat iron (5), and the right ends of the two lower wire holders (305) are insulating support blocks.
3. A live replaceable discharge counter access system according to claim 2, wherein: the knife flashboard (302) is fixedly connected to the supporting plate (306) through bolts, and the supporting plate (306) is fixedly connected in the installation box (2).
4. A live replaceable discharge counter access system according to claim 1, wherein: the mounting plate (10) is fixedly connected to the mounting box (2) through the screw rod (13), a plurality of horizontal strip-shaped through holes (11) are formed in the mounting plate (10), rectangular through holes (12) are formed in the middle of the mounting plate (10), and the horizontal strip-shaped through holes (11) can be opposite to the mounting holes of the discharge counter (6) and are fixed through bolts.
5. A live replaceable discharge counter access system according to claim 4, wherein: the mounting plate (10) is connected to the mounting box (2) through four screws (13), and the screws (13) and the mounting plate (10) are locked through double nuts (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810361055.3A CN108508257B (en) | 2018-04-20 | 2018-04-20 | Discharge counter access system capable of being replaced in electrified mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810361055.3A CN108508257B (en) | 2018-04-20 | 2018-04-20 | Discharge counter access system capable of being replaced in electrified mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108508257A CN108508257A (en) | 2018-09-07 |
| CN108508257B true CN108508257B (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810361055.3A Active CN108508257B (en) | 2018-04-20 | 2018-04-20 | Discharge counter access system capable of being replaced in electrified mode |
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| Country | Link |
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| CN (1) | CN108508257B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108963844A (en) * | 2018-09-21 | 2018-12-07 | 广东电网有限责任公司 | Arrester discharge counter live replacing device |
| CN109188060A (en) * | 2018-09-26 | 2019-01-11 | 广东电网有限责任公司 | Counter installing mechanism |
| CN109085392B (en) * | 2018-10-15 | 2024-10-11 | 广东电网有限责任公司 | Discharge counter installation box |
| CN110233070A (en) * | 2019-07-11 | 2019-09-13 | 广东电网有限责任公司 | A kind of double-pole lock formula counter of lightning arrester device |
| CN110265236B (en) * | 2019-07-11 | 2024-07-26 | 广东电网有限责任公司 | Couple interlocking formula arrester counter device |
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| JP2014064360A (en) * | 2012-09-20 | 2014-04-10 | Takayasu Kanemura | Surge current backflow prevention circuit including triple-pole spd element, and counter system |
| CN204719218U (en) * | 2015-04-19 | 2015-10-21 | 国网青海省电力公司海东供电公司 | Lightning arrester monitor calibration equipment |
| CN205067580U (en) * | 2015-09-30 | 2016-03-02 | 贵州电网有限责任公司都匀供电局 | Quick assembly disassembly discharge counter |
| CN106024481A (en) * | 2016-07-25 | 2016-10-12 | 李亮棠 | Isolated grounding device for power-off overhauling and maintenance at low voltage side |
| CN206059255U (en) * | 2016-09-19 | 2017-03-29 | 贵州电网有限责任公司都匀供电局 | A kind of power failure changes the quick short circuit disconnecting link of discharge counter |
| CN107069552A (en) * | 2017-05-08 | 2017-08-18 | 昆明理工大学 | A kind of arrester discharge counter live replacing device and its application method |
| CN208443911U (en) * | 2018-04-20 | 2019-01-29 | 贵州电网有限责任公司 | It is a kind of can charged for replacement discharge counter access device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL3193178T3 (en) * | 2016-01-18 | 2020-05-18 | Abb Schweiz Ag | Monitoring arrangement for monitoring a surge arrester and method for establishing monitoring data related to a surge arrester |
-
2018
- 2018-04-20 CN CN201810361055.3A patent/CN108508257B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014064360A (en) * | 2012-09-20 | 2014-04-10 | Takayasu Kanemura | Surge current backflow prevention circuit including triple-pole spd element, and counter system |
| CN204719218U (en) * | 2015-04-19 | 2015-10-21 | 国网青海省电力公司海东供电公司 | Lightning arrester monitor calibration equipment |
| CN205067580U (en) * | 2015-09-30 | 2016-03-02 | 贵州电网有限责任公司都匀供电局 | Quick assembly disassembly discharge counter |
| CN106024481A (en) * | 2016-07-25 | 2016-10-12 | 李亮棠 | Isolated grounding device for power-off overhauling and maintenance at low voltage side |
| CN206059255U (en) * | 2016-09-19 | 2017-03-29 | 贵州电网有限责任公司都匀供电局 | A kind of power failure changes the quick short circuit disconnecting link of discharge counter |
| CN107069552A (en) * | 2017-05-08 | 2017-08-18 | 昆明理工大学 | A kind of arrester discharge counter live replacing device and its application method |
| CN208443911U (en) * | 2018-04-20 | 2019-01-29 | 贵州电网有限责任公司 | It is a kind of can charged for replacement discharge counter access device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108508257A (en) | 2018-09-07 |
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