CN102103940B - Vacuum arc extinguish chamber capacitive treating method and device - Google Patents
Vacuum arc extinguish chamber capacitive treating method and device Download PDFInfo
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- CN102103940B CN102103940B CN 200910261183 CN200910261183A CN102103940B CN 102103940 B CN102103940 B CN 102103940B CN 200910261183 CN200910261183 CN 200910261183 CN 200910261183 A CN200910261183 A CN 200910261183A CN 102103940 B CN102103940 B CN 102103940B
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Abstract
The invention discloses vacuum arc extinguish chamber capacitive treating method and device. The method is characterized by comprising the following steps: treating an arc extinguish chamber in a small current arcing state through instant current generated after a capacitor discharges electricity; and simulating the actual flashy flow of the vacuum arc extinguish chamber in a closed state. The method and the device ensure that the heat penetration depth of contact treatment of the vacuum arc extinguish chamber is deeper, so the restriking rate and non-sustained disruptive discharge (NSDD) phenomenon of the vacuum arc extinguish chamber can be effectively reduced, the structure is simple, and the cost is lower.
Description
Technical field
The present invention relates to a kind of vacuum interrupter capacitive ageing method and device, belong to technical field of vacuum switches.
Background technology
Vacuum switch is little with its volume, life-span long and short road electric current cut-offs reliable, non-maintaining or the reduced-maintenance excellent properties makes it obtain using very widely in middle pressure field.The problem that rate is high but switched capacitor is restriked is also very outstanding, and annual accident is frequent.For reducing the vacuum switch opening-closing capacitor bank rate of restriking, a large amount of work has been done by each vacuum interrupter and vacuum switch manufacturing enterprise, power department, scientific research institutions, and country also brings up to the C2 level to standard from the C1 level for this reason.For reaching the C2 grade standard, with capacity current vacuum interrupter being carried out the ageing reduction opening-closing capacitor bank rate of restriking is offshore company's way commonly used now.The capacity current ageing device that offshore company uses is generally low frequency (5Hz) AC system, with the direct current of a half-wave arc control device contact is carried out ageing, can export the electric current of 5kA, and system is huge and expensive.
Summary of the invention
The object of the invention is to, a kind of vacuum interrupter capacitive ageing method and device are provided.It can make the depth of penetration heating of vacuum arc-extinguishing chamber contact ageing darker, can effectively reduce vacuum interrupter restrike rate and NSDD phenomenon, and simple in structure, and cost is also lower.
Technical scheme of the present invention: a kind of vacuum interrupter capacitive ageing method, it is characterized in that: by the transient current that produces behind the capacitor discharge, the vacuum interrupter that is in little electric current arcing state is carried out ageing, and the vacuum interrupter that is in closure state is simulated actual shoving.
In the above-mentioned vacuum interrupter capacitive ageing method, the little electric current arcing state of described vacuum interrupter is that accessory power supply by 50V～80V is after rectifies, the vacuum interrupter of conducting closure state, the distance that then makes the contact of vacuum interrupter pull open 1mm～10mm by operating mechanism realizes.
In the aforesaid vacuum interrupter capacitive ageing method, described capacitor is charged after by rectifies by the main power source of 150V～250V.
A kind of vacuum interrupter capacitive ageing device is characterized in that: comprise by discharge switch and the capacitor of vacuum interrupter parallel connection with by proximity switch and the initiating device that vacuum interrupter one end links to each other, also comprise the operating mechanism that links to each other with vacuum interrupter.
In the above-mentioned vacuum interrupter capacitive ageing device, described initiating device comprises the accessory power supply of 50V～80V, and accessory power supply one end links to each other with proximity switch by the rectification diode, and the other end links to each other with the live wire that exchanges external power of 220V～380V.
In the aforesaid vacuum interrupter capacitive ageing device, described capacitor size is 2F～20F, and an end links to each other with the zero line that exchanges external power of 220V～380V, the other end links to each other with the main power source of 150V～250V with charge switch by rectifier diode, and main power source links to each other with the live wire that exchanges external power of 220V～380V.
Compared with prior art, the transient current that the present invention produces after by capacitor discharge, the vacuum interrupter that is in little electric current arcing state is carried out ageing, and the vacuum interrupter that is in closure state simulated actual shoving, can make the depth of penetration heating of vacuum arc-extinguishing chamber contact ageing darker, can effectively reduce vacuum interrupter restrike rate and NSDD phenomenon, and simple in structure, and cost is also lower.
Description of drawings
Fig. 1 is the structural representation of device of the present invention.
Being labeled as in the accompanying drawing: the 1-main power source, the 2-accessory power supply, the 3-charge switch, the 4-discharge switch, the 5-proximity switch, the 6-capacitor, the 7-vacuum interrupter, the 8-rectifier diode, the 9-operating mechanism, 10-exchanges external power.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples, but not as the foundation to the present invention's restriction.
Embodiment
A kind of vacuum interrupter capacitive ageing method is characterized in that: by the transient current that produces behind the capacitor discharge, the vacuum interrupter that is in little electric current arcing state is carried out ageing, and the vacuum interrupter that is in closure state is simulated actual shoving.The little electric current arcing state of vacuum interrupter be accessory power supply by 50V～80V after rectifies, the vacuum interrupter of conducting closure state, the distance that then makes the contact of vacuum interrupter pull open 1mm～10mm by operating mechanism realizes.Capacitor is charged after by rectifies by the main power source of 150V～250V.
Realize a kind of vacuum interrupter capacitive ageing device of said method, as shown in Figure 1, it is characterized in that: comprise by discharge switch 4 and the capacitor 6 of vacuum interrupter 7 parallel connections with by proximity switch 5 and the initiating device that vacuum interrupter 7 one ends link to each other, also comprise the operating mechanism 9 that links to each other with vacuum interrupter 7.Initiating device comprises the accessory power supply 2 of 50V～80V, and accessory power supply 2 one ends link to each other with proximity switch 5 by rectification diode 8, and the other end links to each other with the live wire that exchanges external power 10 of 220V～380V.Capacitor 6 sizes are 2F～20F, and an end links to each other with the zero line that exchanges external power 10 of 220V～380V, the other end links to each other with the main power source 1 of 150V～250V with charge switch 3 by rectifier diode 8, and main power source 1 links to each other with the live wire that exchanges external power 10 of 220V～380V.
Operation principle: at first vacuum interrupter 7 is in "on" position, its contact closure; Close charge switch 3 by main power source 1(150V～250V) after 8 rectifications of rectification diode capacitor 6 is charged; Proximity switch 5 closes, by the lower accessory power supply 2(50V of voltage～80V), make the small electric stream of 20A～50A by vacuum interrupter, make the contact of vacuum interrupter 7 be separated by a distance (1mm～10mm), make the contact gap be in little electric current arcing state with operating mechanism 9; The discharge switch 4 that closes makes the capacitor 6(capacitance range 2F-20F that is full of electricity) rapidly to the vacuum interrupter discharge, the capacitive Transient Currents by the contact gap, carries out ageing to vacuum interrupter 7 rapidly.By adjusting charging voltage value and capacitance capable of regulating capacitive Transient Currents in the scope of 1kA～5kA.Consider that the electric arc product causes withstand voltage decline to the pollution of vacuum extinction chamber interior, be advisable with the higher less capacitance of voltage.At this moment the transient current value is identical, but shorten discharge time.But too high voltage can bring the rapid raising of cost, thereby main power source adopts the magnitude of voltage property taken into account of 200V better.
The main cause that opening-closing capacitor bank is restriked is inrush phenomenon too approximately about 15kA, and contact melting welding point is pulled out burr and caused due to the field emission during separating brake.Actual the shoving of utilization simulation pulled out burr, then burns by electric arc, can effectively reduce like this probability of restriking to occur.When vacuum interrupter 7 is in "on" position; The charge switch 3 that closes is by 6 chargings of 1 pair of capacitor of main power source; The discharge switch 4 that closes, the capacitive Transient Currents is by closed contact, and electric current is approximately 15kA, has simulated actual shoving.
Claims (5)
1. vacuum interrupter capacitive ageing method is characterized in that: the transient current by capacitor discharge produces, carry out ageing to the vacuum interrupter that is in little electric current arcing state, and the vacuum interrupter that is in closure state simulated actual shoving.
2. vacuum interrupter capacitive ageing method according to claim 1, it is characterized in that: the little electric current arcing state of described vacuum interrupter is that accessory power supply by 50V～80V is after rectifies, the vacuum interrupter of conducting closure state, the distance that then makes the contact of vacuum interrupter pull open 1mm～10mm by operating mechanism realizes.
3. vacuum interrupter capacitive ageing method according to claim 1 and 2 is characterized in that: described capacitor is charged after by rectifies by the main power source of 150V～250V.
4. vacuum interrupter capacitive ageing device, it is characterized in that: comprise by discharge switch (4) and vacuum interrupter (7) capacitor (6) in parallel with by proximity switch (5) and the initiating device that vacuum interrupter (7) one ends link to each other, also comprise the operating mechanism (9) that links to each other with vacuum interrupter (7); Described initiating device comprises the accessory power supply (2) of 50V～80V, and accessory power supply (2) one ends link to each other with proximity switch (5) by rectification diode (8), and the other end links to each other with the live wire that exchanges external power (10) of 220V～380V.
5. vacuum interrupter capacitive ageing device according to claim 4, it is characterized in that: described capacitor (6) size is 2F～20F, and an end links to each other with the zero line that exchanges external power (10) of 220V～380V, the other end links to each other with the main power source (1) of 150V～250V with charge switch (3) by rectifier diode (8), and main power source (1) links to each other with the live wire that exchanges external power (10) of 220V～380V.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910261183 CN102103940B (en) | 2009-12-21 | 2009-12-21 | Vacuum arc extinguish chamber capacitive treating method and device |
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| CN 200910261183 CN102103940B (en) | 2009-12-21 | 2009-12-21 | Vacuum arc extinguish chamber capacitive treating method and device |
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| CN102103940A CN102103940A (en) | 2011-06-22 |
| CN102103940B true CN102103940B (en) | 2013-04-17 |
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| CN107993864B (en) * | 2017-12-05 | 2019-04-26 | 湖北大禹汉光真空电器有限公司 | A kind of combination electric current and voltage are to vacuum interrupter ageing device and ageing method |
| CN113764217B (en) * | 2021-08-24 | 2022-06-07 | 西安交通大学 | Vacuum arc-extinguishing chamber pulse voltage aging method capable of automatically adjusting aging energy |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU642792A1 (en) * | 1978-01-09 | 1979-01-15 | Ленинградский Электротехнический Институт Связи Им. М.А.Бонч-Бруевича | Electric discharge device ageing method |
| CN2238479Y (en) * | 1995-09-06 | 1996-10-23 | 绍兴电力局 | Aging test device for vacuum circuit breaker |
| CN1224905A (en) * | 1998-09-23 | 1999-08-04 | 西安交通大学 | High-frequency discharging device for seasoning of vacuum switch |
| CN201307152Y (en) * | 2008-10-29 | 2009-09-09 | 河北省电力研究院 | Aging test device of movable vacuum breaker |
| CN201570397U (en) * | 2009-12-21 | 2010-09-01 | 中国振华电子集团宇光电工有限公司 | Capacitive aging system for vacuum interrupters |
-
2009
- 2009-12-21 CN CN 200910261183 patent/CN102103940B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU642792A1 (en) * | 1978-01-09 | 1979-01-15 | Ленинградский Электротехнический Институт Связи Им. М.А.Бонч-Бруевича | Electric discharge device ageing method |
| CN2238479Y (en) * | 1995-09-06 | 1996-10-23 | 绍兴电力局 | Aging test device for vacuum circuit breaker |
| CN1224905A (en) * | 1998-09-23 | 1999-08-04 | 西安交通大学 | High-frequency discharging device for seasoning of vacuum switch |
| CN201307152Y (en) * | 2008-10-29 | 2009-09-09 | 河北省电力研究院 | Aging test device of movable vacuum breaker |
| CN201570397U (en) * | 2009-12-21 | 2010-09-01 | 中国振华电子集团宇光电工有限公司 | Capacitive aging system for vacuum interrupters |
Non-Patent Citations (2)
| Title |
|---|
| 提高真空灭弧室老炼效果的几种新方法;王卫斌等;《高压电器》;19990330(第03期);40-43 * |
| 王卫斌等.提高真空灭弧室老炼效果的几种新方法.《高压电器》.1999,(第03期), |
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Owner name: CHINA ZHENHUA ELECTRONICS GROUP YUGUANG ELECTRIC C Free format text: FORMER NAME: CHINA ZHENHUA ELECTRON YUGUANG ELECTRICIAN CO.,LTD. |
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Address after: 289 mailbox 550018, Guizhou City, Guiyang Province Patentee after: Chinese Zhenhua electron Yuguang electrician Limited company (state-owned 771 factory) Address before: 289 mailbox 550018, Guizhou City, Guiyang Province Patentee before: China Zhenhua Electronics Group Yuguang Electrical Co., Ltd. |