CN103441017A - Safety protection method of vacuum on-load tap switch - Google Patents
Safety protection method of vacuum on-load tap switch Download PDFInfo
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- CN103441017A CN103441017A CN2013104017365A CN201310401736A CN103441017A CN 103441017 A CN103441017 A CN 103441017A CN 2013104017365 A CN2013104017365 A CN 2013104017365A CN 201310401736 A CN201310401736 A CN 201310401736A CN 103441017 A CN103441017 A CN 103441017A
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Abstract
The invention discloses a safety protection method of a vacuum on-load tap switch. The safety protection method is characterized in that a light-sensitive element is arranged near an A contact and a B contact of an isolation switch of an on-load tap switch. The light-sensitive element is used for detecting a light signal of an arc generated by on and off of the isolation switch K and the A contact and the B contact, and the detected light signal is led to a photoelectric conversion device arranged inside a switch electric control mechanism via an optical fiber. After the light signal is photo-electrically converted by the photoelectric conversion device, the light signal is sent to a control device arranged inside the switch electric control mechanism. The switch electric control mechanism is controlled not to take action by the control device, and an alarm is performed simultaneously to notice operation staffs to maintain timely. Therefore, a switch fault is solved at an incipient phase and an accident is avoided.
Description
Technical field:
The present invention relates to the on load tap changer technical field, particularly the method for security protection of vacuum on-load operation switch.
Background technology:
In the transformer technology field, jumbo transformer particularly, gradually adopt vacuum on-load operation switch to substitute the on load tap changer of the mechanical type contact of tradition use, utilize the high dielectric property under high vacuum environment and strong blow-out in vacuum bubbles, the switching of contact is occurred in vacuum bubbles, avoid the pollution of electric arc to transformer oil, improve switch performance and useful life.
The switch that utilizes vacuum bubbles to substitute former mechanical type transition contact is called vacuum on-load operation switch, and typically transition circuit is as shown in Figure 1: K wherein is isolating switch, and M1, M2 are main switching contact, V1, V2, and V3, V4 are vacuum bubbles, R1, R2 are transition resistance.
Shown in Fig. 1: a, be that switch is in Transformer Winding N tap conducting state, during switching over, transition circuit is undertaken by following process under the drive of switching control mechanism: b, main switching contact M1 disconnect, vacuum tube V1 conducting, and electric current flows through vacuum tube V1, isolating switch K; C, vacuum tube V1 close, vacuum tube V2 conducting, and electric current flows through transition resistance R 1, vacuum tube V2, isolating switch K; D, isolating switch K connect A, B two contacts; E, vacuum tube V3 conducting, Transformer Winding N tap and N+1 tap are by vacuum tube V2, V3, and transition resistance R1, R2 and isolating switch K bridge joint, externally provide electric current simultaneously; F, vacuum tube V2 disconnect, and electric current is connected through vacuum tube V3, isolating switch K by the N+1 tap; G, isolating switch K leave contact A; H, vacuum tube V4 connect, and electric current is connected through vacuum tube V4, isolating switch K by the N+1 tap; I, main switching contact M2 connect, and switch has completed the switching from transformer N tap to transformer N+1 tap.Can find out from above-mentioned switching over process, before isolating switch K turns on the vacuum tube closure of back, disconnect after vacuum tube in front disconnects, be that equipotential is cut-off and connection, in this process, can not produce electric arc.
Due to long use, or due to the quality problems of vacuum tube itself, the technical performance of vacuum tube reduces, cut-off not exclusively, make isolating switch K fully equipotential cut-off and connection, isolating switch K will produce electric arc while switching between contact A, B, electric arc can pollute the transformer oil in switch, reduce insulation property, cause switch fault.
The switching principle of this vacuum on-load operation switch can be referring to the ZL200920076183.X Chinese invention patent of the applicant's application.
Summary of the invention:
Technical problem to be solved by this invention is intended to overcome the deficiency of above-mentioned technology, and proposes a kind of method for security protection of vacuum on-load operation switch.
Technical problem to be solved by this invention can be achieved through the following technical solutions:
The method for security protection of vacuum on-load operation switch, it is characterized in that, near the A contact of the isolating switch of on load tap changer and B contact, a light-sensitive element is set, this light-sensitive element is in order to detect isolating switch K and A, the connecting and disconnecting of B contact produce the light signal of electric arc, and surveyed light signal is caused to the photoelectric conversion device be arranged in the switch electric control mechanism by optical fiber, after the photoelectric conversion device opto-electronic conversion, send into the control device be arranged in the switch electric control mechanism, control device no longer moves and same alarm by the switch electric control mechanism, notify operating personnel to safeguard in time.
Owing to having adopted technical scheme as above, the present invention is by respectively installing light-sensitive element near two contact A at isolating switch K, B, as quality problems appear in vacuum tube, switch when switching isolating switch K and the connecting and disconnecting of A, B contact to produce electric arc, light-sensitive element gathers the light signal that electric arc produces, to the photoelectric conversion device in the switch electric control mechanism, after the photoelectric conversion device opto-electronic conversion, send into control device through optical fiber transmission.Control device no longer moves and same alarm by the switch electric control mechanism, notifies operating personnel to safeguard in time, and switch fault was solved in the onset stage, avoids the generation of accident.
The accompanying drawing explanation:
Fig. 1 is vacuum on-load operation switch transition circuit handoff procedure principle schematic.
Fig. 2 is the light-sensitive element installation site schematic diagram in vacuum on-load operation switch safety guard of the present invention.
The theory diagram that Fig. 3 is vacuum on-load operation switch safety guard of the present invention.
Embodiment
Describe the present invention in detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 2, fixed contact 203 at isolating switch, 207(is the A contact of isolating switch K, the B contact) near installing light- sensitive element 202, 206, when vacuum tube 201 or 205 can not normally cut-off with connection because of quality problems, the moving contact 204 of isolating switch or 208 and the cut-offfing or connect and will produce electric arc of fixed contact 203 or 207, light- sensitive element 202 or 206 is flutterred and is grasped the light signal that arclight produces, referring to Fig. 3, light- sensitive element 202 or 206 is flutterred and is grasped the light signal that arclight produces and cause the light signal input that is arranged on the photoelectric conversion device 110 in switch electric control mechanism 100 by optical fiber, become the signal of telecommunication through photoelectric conversion device 110 opto-electronic conversion, transfer to the signal input part that is arranged on equally the control device 120 in switch electric control mechanism 100 by its electrical signal, switch motor structure 130 in control device 120 control switch electric control mechanisms no longer moves.Because control device 120 has an alarm unit 121, alarm unit 121 is reported to the police or is reported to the police by the alarm terminal of controlling in machine room by alarm 140, notifies operating personnel to carry out on-call maintenance simultaneously.
Above content shows and has described basic principle of the present invention, principal character and advantage of the present invention.The personnel of the industry should understand; the present invention is not subject to the restriction of above-mentioned example; that in above-mentioned example and explanation, describes just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all will fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (1)
1. the method for security protection of vacuum on-load operation switch, it is characterized in that, near the A contact of the isolating switch of on load tap changer and B contact, a light-sensitive element is set, this light-sensitive element is in order to detect isolating switch K and A, the connecting and disconnecting of B contact produce the light signal of electric arc, and surveyed light signal is caused to the photoelectric conversion device be arranged in the switch electric control mechanism by optical fiber, after the photoelectric conversion device opto-electronic conversion, send into the control device be arranged in the switch electric control mechanism, control device no longer moves and same alarm by the switch electric control mechanism, notify operating personnel to safeguard in time.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104017365A CN103441017A (en) | 2013-09-05 | 2013-09-05 | Safety protection method of vacuum on-load tap switch |
| CN201410073239.1A CN103854913A (en) | 2013-09-05 | 2014-02-28 | Isolation switch arc detection mechanism and safety protection device for vacuum on-load tapping switch |
| CN201420092095.XU CN203839264U (en) | 2013-09-05 | 2014-02-28 | Vacuum on-load tap-changer isolation switch arc detection mechanism and safety protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104017365A CN103441017A (en) | 2013-09-05 | 2013-09-05 | Safety protection method of vacuum on-load tap switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103441017A true CN103441017A (en) | 2013-12-11 |
Family
ID=49694705
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104017365A Pending CN103441017A (en) | 2013-09-05 | 2013-09-05 | Safety protection method of vacuum on-load tap switch |
| CN201410073239.1A Pending CN103854913A (en) | 2013-09-05 | 2014-02-28 | Isolation switch arc detection mechanism and safety protection device for vacuum on-load tapping switch |
| CN201420092095.XU Expired - Lifetime CN203839264U (en) | 2013-09-05 | 2014-02-28 | Vacuum on-load tap-changer isolation switch arc detection mechanism and safety protection device |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410073239.1A Pending CN103854913A (en) | 2013-09-05 | 2014-02-28 | Isolation switch arc detection mechanism and safety protection device for vacuum on-load tapping switch |
| CN201420092095.XU Expired - Lifetime CN203839264U (en) | 2013-09-05 | 2014-02-28 | Vacuum on-load tap-changer isolation switch arc detection mechanism and safety protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN103441017A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112630644A (en) * | 2020-12-15 | 2021-04-09 | 中国电力科学研究院有限公司 | Method and system for on-line monitoring on-load tap-changer switching program based on photoelectric signal |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441017A (en) * | 2013-09-05 | 2013-12-11 | 上海华明电力设备制造有限公司 | Safety protection method of vacuum on-load tap switch |
| CN107037761A (en) * | 2017-05-25 | 2017-08-11 | 四川汇友电气有限公司 | Distribution type monitoring device of touch network with fiber switch |
| CN107170639A (en) * | 2017-06-21 | 2017-09-15 | 上海华明电力设备制造有限公司 | Vacuum tube vacuum-degree online test method and device in vacuum on-load operation switch |
| CN109346300A (en) * | 2018-09-30 | 2019-02-15 | 南方电网科学研究院有限责任公司 | Safety protection system and method for vacuum on-load tap-changer |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8223466B2 (en) * | 2009-06-30 | 2012-07-17 | General Electric Company | Arc flash detection |
| CN201623473U (en) * | 2010-02-08 | 2010-11-03 | 保定天威恒通电气有限公司 | Bus-bar room arc light monitoring and protective device of high reliability |
| CN101916987B (en) * | 2010-08-13 | 2013-09-25 | 保定市尤耐特电气有限公司 | Fast electric arc light protection method |
| JP5416285B2 (en) * | 2010-10-29 | 2014-02-12 | 古河電気工業株式会社 | Optical amplification device and optical transmission system |
| CN102623202B (en) * | 2011-01-30 | 2015-11-18 | 上海华明电力设备制造有限公司 | A kind of composite vacuum on-load tap-changer changeover module |
| CN203014364U (en) * | 2013-01-06 | 2013-06-19 | 安徽中节节能环保科技有限公司 | Electrical protective device based on arc light detection |
| CN103441017A (en) * | 2013-09-05 | 2013-12-11 | 上海华明电力设备制造有限公司 | Safety protection method of vacuum on-load tap switch |
-
2013
- 2013-09-05 CN CN2013104017365A patent/CN103441017A/en active Pending
-
2014
- 2014-02-28 CN CN201410073239.1A patent/CN103854913A/en active Pending
- 2014-02-28 CN CN201420092095.XU patent/CN203839264U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112630644A (en) * | 2020-12-15 | 2021-04-09 | 中国电力科学研究院有限公司 | Method and system for on-line monitoring on-load tap-changer switching program based on photoelectric signal |
| CN112630644B (en) * | 2020-12-15 | 2023-03-14 | 中国电力科学研究院有限公司 | Method and system for on-line monitoring on-load tap-changer switching program based on photoelectric signal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN203839264U (en) | 2014-09-17 |
| CN103854913A (en) | 2014-06-11 |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131211 |