CN104242003A - Discharging tool for bulk capacitors - Google Patents
Discharging tool for bulk capacitors Download PDFInfo
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- CN104242003A CN104242003A CN201410533270.9A CN201410533270A CN104242003A CN 104242003 A CN104242003 A CN 104242003A CN 201410533270 A CN201410533270 A CN 201410533270A CN 104242003 A CN104242003 A CN 104242003A
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- discharging
- coil
- voltage
- binding posts
- case
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Abstract
The invention discloses a discharging tool for bulk capacitors. The discharging tool comprises an insulating rod (1), a case (2), a discharging coil (3) and a digital voltage gauge (4). The discharging coil (3) is mounted in the case (2); two binding posts (5) are mounted on the outer side of the case (2); the digital voltage gauge (4) is connected to the secondary side of the discharging coil (3) and embedded on the case (2); the primary side of the discharging coil (3) is connected with the two binding posts (5) respectively, and one of the binding posts (5) is connected with the end of the insulating rod (1); thus, the discharging tool for the bulk capacitors is formed. Power of the capacitors is discharged rapidly according to operating principle of the discharging coil, and voltage values of two sides of each capacitor can be reduced to below the voltage value 36V which is safe to the human body. The discharging tool for the bulk capacitors is simple in structure, convenient to operate, quick in discharging and capable of displaying read voltage values; whether the field state is safe or not can be judged according to the real voltage values so as to protect operators.
Description
Technical field
The invention belongs to electric power system high voltage field, be specifically related to a kind of instrument for bulky capacitor electric discharge, apply to substation equipment maintenance and repair personnel and electrical test personnel.
Background technology
There is a lot of capacitive apparatus in electric power system, as the equipment such as capacitor, capacitance type potential transformer.Carrying out overhauling, in process of the test, inherently directly touch these equipment.These equipment may will contact after just stopping, just testing or after fault at once, and for the dump energy existed in equipment, the mode that ground connection usually can be adopted to discharge is carried out.But problem be not know will how long, how many times just can put totally because cannot know its dump energy, whether the magnitude of voltage of its both sides at below safe voltage 36V.For the capacitor of band fuse, after system or capacitor faults itself, cause fuse failure, to 10kV, 20kV, 35kV capacitor, now the voltage at single capacitor two ends may reach peak 35/ √ 3kV, by traditional ground connection discharge mode, there is overdischarge situation not to the utmost, when maintainer changes fuse, there occurs the phenomenon that capacitor continues electric discharge, threaten the safety of maintainer.
Electric power system is particularly paid attention to safety, allows maintenance, testing crew work relievedly, the Method and kit for that will have ensure everybody safety.Therefore just should process in better mode more reliably for capacitive equipment dump energy problem, spoken by data instead of feel, the real fail safe improving scene.
Summary of the invention
The object of the invention is to: provide a kind of instrument for bulky capacitor electric discharge, this instrument is portable product, conveniently can bring scene in maintenance repair, test, defect elimination, solve capacitive apparatus dump energy problem.
Technical interpretation scheme of the present invention is: this instrument comprises insulating bar, housing, discharge coil and digital voltmeter, in housing, discharge coil is installed, housing installs two binding posts outward, digital voltmeter is connected to the secondary side of discharge coil and is embedded on housing, the primary side of discharge coil connects two binding posts respectively, wherein a binding post connects the end of insulating bar, the overall instrument formed for bulky capacitor electric discharge.
During practical operation, by another binding post of instrument by high voltage insulated cable ground connection, during electric discharge, the high-pressure side of hand-held insulating bar contacting capacitor to discharging capacitors, until discharged.
Advantage of the present invention is: utilize the operation principle of discharge coil to bleed off the electricity of electric capacity fast; the magnitude of voltage of electric capacity both sides is made to be reduced to human safety voltage below 36V; its structure is simple; easy to operate; discharge quick and reading magnitude of voltage can be shown; according to actual voltage value judgment device present situation whether safety, protection personal security.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1 insulating bar, 2 housings, 3 discharge coils, 4 digital voltmeters, 5 binding posts.
Embodiment
Below in conjunction with accompanying drawing, technical solution of the present invention is described further.
As shown in Figure 1, this instrument comprises insulating bar 1, housing 2, discharge coil 3 and digital voltmeter 4, in housing 2, discharge coil 3 is installed, housing 2 is outer installs two binding posts 5, digital voltmeter 4 is connected to the secondary side of discharge coil 3 and is embedded on housing 2, the primary side of discharge coil 3 connects two binding posts 5 respectively, and wherein a binding post connects the end of insulating bar 1, the overall instrument formed for bulky capacitor electric discharge.
Just to stop, just test after or fault after capacitor, its maximum upper limit voltage is 20kV; The rated value of discharge coil chooses 20kV, and for convenience of calculating, observing, its no-load voltage ratio is 20kV/200V, discharge coil no-load voltage ratio 20000/200, namely 100 times; Choose digital voltmeter, this table directly actually can read primary voltage value, and the actual read number of voltmeter is exaggerated 100 times; Voltage signal is amplified, and adopt the mode that gain is amplified, voltage amplification factor decibels is defined as: K=20lg (V
0/ V
i), K is the decibels of multiplication factor, V
0for amplifying signal exports, V
ifor signal input, because V
0/ V
i=100, therefore K=20lg100=40, therefore adopt amplifier to increase to 40 times through output signal signal, the voltage signal drawn like this is primary voltage value; The design of insulating bar should design according to 35kV electric pressure, and high-voltage power-line reliably should be able to be accessed in insulating bar end, and the high-voltage line after connection should be integrated with the metal tip of insulating bar;
practical operation is as follows:by another binding post of instrument by high voltage insulated cable ground connection, during electric discharge, the high-pressure side of hand-held insulating bar contacting capacitor is to discharging capacitors, observe the magnitude of voltage of digital voltmeter, show that electric discharge completes when magnitude of voltage is reduced to below 36V, electric discharge can certainly be continued, reach zero as far as possible.
Claims (1)
1. for the instrument of bulky capacitor electric discharge, it is characterized in that: this instrument comprises insulating bar (1), housing (2), discharge coil (3) and digital voltmeter (4), in housing (2), discharge coil (3) is installed, housing (2) installs two binding posts (5) outward, digital voltmeter (4) is connected to the secondary side of discharge coil (3) and is embedded on housing (2), the primary side of discharge coil (3) connects two binding posts (5) respectively, wherein a binding post connects the end of insulating bar (1), the overall instrument formed for bulky capacitor electric discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410533270.9A CN104242003A (en) | 2014-10-11 | 2014-10-11 | Discharging tool for bulk capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410533270.9A CN104242003A (en) | 2014-10-11 | 2014-10-11 | Discharging tool for bulk capacitors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104242003A true CN104242003A (en) | 2014-12-24 |
Family
ID=52229608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410533270.9A Pending CN104242003A (en) | 2014-10-11 | 2014-10-11 | Discharging tool for bulk capacitors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104242003A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2552074B (en) * | 2016-06-01 | 2020-04-15 | Secr Defence | A Stored voltage discharging device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2206993Y (en) * | 1994-12-27 | 1995-09-06 | 姚志周 | Special discharge coil of parallel condenser bank |
| CN2253038Y (en) * | 1995-08-29 | 1997-04-23 | 柳州市高压电器厂 | Dry discharging coil |
| CN2294515Y (en) * | 1997-04-08 | 1998-10-14 | 西安希望电气有限责任公司 | Full closed dry discharge coil |
| CN2369330Y (en) * | 1999-01-18 | 2000-03-15 | 李永健 | Fully sealed discharge coil |
| CN2842823Y (en) * | 2005-10-14 | 2006-11-29 | 山东电力集团公司超高压输变电分公司 | Multi-contact capacitor set discharger |
| CN2859995Y (en) * | 2005-07-18 | 2007-01-17 | 田春发 | Manual discharging device of portable bulk capacitor |
| CN201562772U (en) * | 2009-12-09 | 2010-08-25 | 河南省电力公司鹤壁供电公司 | Discharge rod of capacitor |
| CN103675540A (en) * | 2013-12-04 | 2014-03-26 | 国家电网公司 | Shunt capacitor bank discharge device |
| CN104079073A (en) * | 2014-07-14 | 2014-10-01 | 国家电网公司 | 35 kV capacitor and discharge coil secondary circuit monitoring device for transformer substation |
-
2014
- 2014-10-11 CN CN201410533270.9A patent/CN104242003A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2206993Y (en) * | 1994-12-27 | 1995-09-06 | 姚志周 | Special discharge coil of parallel condenser bank |
| CN2253038Y (en) * | 1995-08-29 | 1997-04-23 | 柳州市高压电器厂 | Dry discharging coil |
| CN2294515Y (en) * | 1997-04-08 | 1998-10-14 | 西安希望电气有限责任公司 | Full closed dry discharge coil |
| CN2369330Y (en) * | 1999-01-18 | 2000-03-15 | 李永健 | Fully sealed discharge coil |
| CN2859995Y (en) * | 2005-07-18 | 2007-01-17 | 田春发 | Manual discharging device of portable bulk capacitor |
| CN2842823Y (en) * | 2005-10-14 | 2006-11-29 | 山东电力集团公司超高压输变电分公司 | Multi-contact capacitor set discharger |
| CN201562772U (en) * | 2009-12-09 | 2010-08-25 | 河南省电力公司鹤壁供电公司 | Discharge rod of capacitor |
| CN103675540A (en) * | 2013-12-04 | 2014-03-26 | 国家电网公司 | Shunt capacitor bank discharge device |
| CN104079073A (en) * | 2014-07-14 | 2014-10-01 | 国家电网公司 | 35 kV capacitor and discharge coil secondary circuit monitoring device for transformer substation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2552074B (en) * | 2016-06-01 | 2020-04-15 | Secr Defence | A Stored voltage discharging device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141224 |