CN103854913A - Isolation switch arc detection mechanism and safety protection device for vacuum on-load tapping switch - Google Patents
Isolation switch arc detection mechanism and safety protection device for vacuum on-load tapping switch Download PDFInfo
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- CN103854913A CN103854913A CN201410073239.1A CN201410073239A CN103854913A CN 103854913 A CN103854913 A CN 103854913A CN 201410073239 A CN201410073239 A CN 201410073239A CN 103854913 A CN103854913 A CN 103854913A
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Abstract
An isolation switch arc detection mechanism of a vacuum on-load tapping switch comprises a plurality of vacuum tube sets, an insulating supporting plate and a plurality of isolation switch sets located on the outer side of the insulating supporting plate in the axial direction. The isolation switch arc detection mechanism further comprises an annular light guide fiber and a leading-out fiber. The annular light guide fiber is arranged on the insulating supporting plate and used for sensing whether an arc exists at the moment when movable contacts make contact with and are disconnected with fixed contacts. The leading-out fiber is connected with the annular light guide fiber and leads out an optical signal detected by the annular light guide fiber. If vacuum tubes have a quality problem, in the switching process of the switches, the arc will be produced at the moment when the movable contacts and the static contacts of isolation switches are connected or disconnected. After the annular light guide fiber receives arc light, the arc light is transmitted to a photoelectric conversion device in an electric switch control mechanism through the leading-out fiber, and the arc light is fed into a control device after photovoltaic conversion is performed on the arc light. The control device makes the electric switch control mechanism not move and sounds an alarm at the same time to notify operators of timely maintenance, so that a switch failure is eliminated at an initial stage, and accidents are avoided.
Description
Technical field:
The present invention relates on load tap changer technical field, particularly isolating switch arc-detection mechanism and the safety guard of vacuum on-load operation switch.
Background technology:
In transformer technology field, particularly jumbo transformer, 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 is wherein 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, when 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 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 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, can not produce electric arc in this process.
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 completely 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:
One of technical problem to be solved by this invention is intended to overcome the deficiency of above-mentioned technology, and proposes a kind of isolating switch arc-detection mechanism of vacuum on-load operation switch.
Two of technical problem to be solved by this invention is to provide a kind of safety guard that adopts above-mentioned isolating switch arc-detection mechanism to form.
One of technical problem to be solved by this invention can be achieved through the following technical solutions:
The isolating switch arc-detection mechanism of vacuum on-load operation switch, comprising:
Some groups of vacuum tubes;
In order to the insulating supporting dish of mounting vacuum tube driving mechanism;
Some groups are positioned at the axially isolating switch in outside of described insulating supporting dish, and every group of isolating switch includes at least one fixed contact and a moving contact, and described moving contact contacts with described fixed contact and disconnects; It is characterized in that, also comprise:
Be arranged on the annular light-conductive optic fibre on described insulating supporting dish, whether described annular light-conductive optic fibre is by there is electric arc with described fixed contact in the moment contacting with disconnecting in order to moving contact described in perception between every group of isolating switch and described insulating supporting dish;
What be connected with described annular light-conductive optic fibre draws optical fiber, and this is drawn the light signal that light detects described annular light-conductive optic fibre and draws.
In a preferred embodiment of the invention, on described insulating supporting dish, offer a cannelure, described annular light-conductive optic fibre is to approach a circumference in described cannelure.
In one of the present invention is preferably implemented, described cannelure is arranged on described insulating supporting dish upper surface near endoporus marginal position.
Two of technical problem to be solved by this invention can be achieved through the following technical solutions:
The safety guard of vacuum on-load operation switch, comprises isolating switch arc-detection as above mechanism, also comprises
One is arranged on the photoelectric conversion device in switch electric control mechanism, and the light signal input of described photoelectric conversion device is connected with the optical fiber of drawing in described isolating switch arc-detection mechanism;
One is arranged on the control device in switch electric control mechanism, the signal input part of this control device is connected with the electrical signal signal of described photoelectric conversion device, the control end of control device and switch electric control mechanism control connection, with the operating state of control switch electric control mechanism.
In a preferred embodiment of the invention, described control device has an alarm unit, and this alarm unit connects an alarm or connects an alarm terminal of controlling in machine room.
Owing to having adopted technical scheme as above, the present invention is by moving at isolating switch K, near fixed contact, lay optical fibre ring, whether there is electric arc with described fixed contact in the moment contacting with disconnecting in order to moving contact described in perception, as there are quality problems in vacuum tube, between the moving contact of switch isolating switch in the time switching and fixed contact, the moment of connecting and disconnecting can produce electric arc, optical fibre ring receives after the light signal that electric arc produces, through drawing optical fiber transmission to the photoelectric conversion device in switch electric control mechanism, after photoelectric conversion device opto-electronic conversion, send into control device.Control device no longer moves and same alarm by switch motor drive mechanism, notifies operating personnel to safeguard in time, and switch fault was solved in the onset stage, avoids the generation of accident.
Accompanying drawing explanation:
Fig. 1 is vacuum on-load operation switch transition circuit handoff procedure principle schematic.
Fig. 2 is the optical fibre ring and the position view of drawing optical fiber in the isolating switch arc-detection mechanism of vacuum loaded tap-off of the present invention.
Fig. 3 is the theory diagram of 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, the vacuum on-load operation switch providing in figure has only shown a phase vacuum tube group and an isolated switch, one phase vacuum tube group comprises 2 vacuum tubes 201 and 205, one isolated switch comprises 2 fixed contacts 203,207 and a moving contact 202, A contact, the B contact of the isolating switch K in the vacuum on-load operation switch described in fixed contact 203,207 pie graphs 1.Moving contact 202 switches between 2 fixed contacts 203,207.
When 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 completely equipotential cut-off and connection, isolating switch K will produce electric arc while switching between contact A, B, be whether moving contact 202 exists electric arc with fixed contact 201 or 205 in the moment contacting with disconnecting, these electric arcs can pollute the transformer oil in switch, reduce insulation property, cause switch fault.
In order these electric arc to be detected in time, the present invention adopts a set of isolating switch arc-detection mechanism to detect in time moving contact 202 and whether has electric arc with fixed contact 201 or 205 in the moment contacting with disconnecting.This isolating switch arc-detection mechanism is that the upper surface that is arranged on the insulating supporting dish 204 of vacuum on-load operation switch at the driving mechanism that drives 2 vacuum tube 201 and 205 conductings and disconnection offers a cannelure 208 near endoporus 206 marginal positions, in this cannelure 208, there is an annular light-conductive optic fibre 310 to approach a circumference, annular light-conductive optic fibre 310 is by 2 fixed contacts 203 of every group of isolating switch, 207, between moving contact 202 and insulating supporting dish 204, whether there is electric arc with fixed contact 201 or 205 in the moment contacting with disconnecting in order to perception moving contact 202.If there is electric arc, annular light-conductive optic fibre 310 is drawn by the optical fiber 320 of drawing being connected with annular light-conductive optic fibre 310 one end receiving arc light.
The safety guard of vacuum on-load operation switch of the present invention, referring to Fig. 3, comprise isolating switch arc-detection mechanism as above, also comprise: be arranged on photoelectric conversion device 110 and control device 120 in switch electric control mechanism 100, the light signal input of photoelectric conversion device 110 is connected with the optical fiber 320 of drawing in isolating switch arc-detection mechanism; The signal input part of control device 320 is connected with the electrical signal signal of photoelectric conversion device 110, and the control end of control device 320 and switch electric control mechanism 130 control connections, with the operating state of control switch electric control mechanism.Control device 120 has an alarm unit 121 in addition, and this alarm unit 121 connects an alarm 140 or connects an alarm terminal of controlling in machine room.
Referring to Fig. 3, annular light-conductive optic fibre 310 is flutterred and is grasped after arclight, cause the light signal input of the photoelectric conversion device 110 being arranged in switch electric control mechanism 100 by drawing optical fiber 320, become the signal of telecommunication through photoelectric conversion device 110 opto-electronic conversion, transfer to the signal input part of the control device 120 being arranged on equally in switch electric control mechanism 100 by its electrical signal, the 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 by alarm 140 or is reported to the police by the alarm terminal of controlling in machine room, 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 (5)
1. the isolating switch arc-detection mechanism of vacuum on-load operation switch, comprising:
Some groups of vacuum tubes;
In order to the insulating supporting dish of mounting vacuum tube driving mechanism;
Some groups are positioned at the axially isolating switch in outside of described insulating supporting dish, and every group of isolating switch includes at least one fixed contact and a moving contact, and described moving contact contacts with described fixed contact and disconnects; It is characterized in that, also comprise:
Be arranged on the annular light-conductive optic fibre on described insulating supporting dish, whether described annular light-conductive optic fibre is by there is electric arc with described fixed contact in the moment contacting with disconnecting in order to moving contact described in perception between every group of isolating switch and described insulating supporting dish;
What be connected with described annular light-conductive optic fibre draws optical fiber, and this is drawn the light signal that light detects described annular light-conductive optic fibre and draws.
2. the isolating switch arc-detection mechanism of vacuum on-load operation switch as claimed in claim 1, is characterized in that, on described insulating supporting dish, offers a cannelure, and described annular light-conductive optic fibre is to approach a circumference in described cannelure.
3. the isolating switch arc-detection mechanism of vacuum on-load operation switch as claimed in claim 2, is characterized in that, described cannelure is arranged on described insulating supporting dish upper surface near endoporus marginal position.
4. the safety guard of vacuum on-load operation switch, comprises and it is characterized in that the isolating switch arc-detection mechanism of the vacuum on-load operation switch as described in claims 1 to 3 any one claim, also comprises
One is arranged on the photoelectric conversion device in switch electric control mechanism, and the light signal input of described photoelectric conversion device is connected with the optical fiber of drawing in described isolating switch arc-detection mechanism;
One is arranged on the control device in switch electric control mechanism, the signal input part of this control device is connected with the electrical signal signal of described photoelectric conversion device, the control end of control device and switch electric control mechanism control connection, with the operating state of control switch electric control mechanism.
5. the safety guard of vacuum on-load operation switch as claimed in claim 1, is characterized in that, described control device has an alarm unit, and this alarm unit connects an alarm or connects an alarm terminal of controlling in machine room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
Applications Claiming Priority (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 |
| CN201310401736.5 | 2013-09-05 | ||
| 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 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103854913A true CN103854913A (en) | 2014-06-11 |
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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 |
| 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 |
| 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 |
Family Applications Before (2)
| 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 |
| 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 |
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| CN (3) | CN103441017A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 | The safety system and method for vacuum on-load operation switch |
Families Citing this family (2)
| 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 |
| 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 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS641973A (en) * | 1987-06-25 | 1989-01-06 | Mitsubishi Electric Corp | Changeover abnormality detector for on-load tap changer |
| 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 |
| CN101916987A (en) * | 2010-08-13 | 2010-12-15 | 保定市尤耐特电气有限公司 | Fast electric arc light protection method |
| US20100328824A1 (en) * | 2009-06-30 | 2010-12-30 | General Electric Company | Arc Flash Detection |
| WO2012056566A1 (en) * | 2010-10-29 | 2012-05-03 | 古河電気工業株式会社 | Optical amplifier device and optical transmission system |
| CN102623202A (en) * | 2011-01-30 | 2012-08-01 | 上海华明电力设备制造有限公司 | Composite vacuum on-load tap-changer switching assembly |
| 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 |
| CN203839264U (en) * | 2013-09-05 | 2014-09-17 | 上海华明电力设备制造有限公司 | Vacuum on-load tap-changer isolation switch arc detection mechanism and safety protection device |
-
2013
- 2013-09-05 CN CN2013104017365A patent/CN103441017A/en active Pending
-
2014
- 2014-02-28 CN CN201420092095.XU patent/CN203839264U/en not_active Expired - Lifetime
- 2014-02-28 CN CN201410073239.1A patent/CN103854913A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS641973A (en) * | 1987-06-25 | 1989-01-06 | Mitsubishi Electric Corp | Changeover abnormality detector for on-load tap changer |
| US20100328824A1 (en) * | 2009-06-30 | 2010-12-30 | 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 |
| CN101916987A (en) * | 2010-08-13 | 2010-12-15 | 保定市尤耐特电气有限公司 | Fast electric arc light protection method |
| WO2012056566A1 (en) * | 2010-10-29 | 2012-05-03 | 古河電気工業株式会社 | Optical amplifier device and optical transmission system |
| CN102623202A (en) * | 2011-01-30 | 2012-08-01 | 上海华明电力设备制造有限公司 | Composite vacuum on-load tap-changer switching assembly |
| 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 |
| CN203839264U (en) * | 2013-09-05 | 2014-09-17 | 上海华明电力设备制造有限公司 | Vacuum on-load tap-changer isolation switch arc detection mechanism and safety protection device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 | The safety system and method for vacuum on-load operation switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103441017A (en) | 2013-12-11 |
| CN203839264U (en) | 2014-09-17 |
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Application publication date: 20140611 |