CN102412509B - Contact network overvoltage protection device - Google Patents
Contact network overvoltage protection device Download PDFInfo
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- CN102412509B CN102412509B CN201110395916.8A CN201110395916A CN102412509B CN 102412509 B CN102412509 B CN 102412509B CN 201110395916 A CN201110395916 A CN 201110395916A CN 102412509 B CN102412509 B CN 102412509B
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- overvoltage
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- overvoltage protection
- contact network
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- 238000004891 communication Methods 0.000 claims abstract description 21
- 238000012544 monitoring process Methods 0.000 claims abstract description 19
- 239000003990 capacitor Substances 0.000 claims abstract description 17
- 238000009413 insulation Methods 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 238000011160 research Methods 0.000 description 6
- 230000003137 locomotive effect Effects 0.000 description 5
- 239000006096 absorbing agent Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
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- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
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Abstract
The invention provides a contact network overvoltage protection device. The top of the device is connected with a high-voltage jet fuse, the short circuit protection of the whole device is realized; a cabinet body and the external environment are connected through a high-voltage sleeve pipe, and then successively connected with a lightening arrester, a discharge counting monitor and a low-voltage sleeve pipe through an electric cable, thus a loop is formed; at the same time, the high-voltage sleeve pipe is successively connected with a resistor, a capacitor, a communication current monitor and a low-voltage sleeve pipe through an electric cable, thus a second loop is formed; the second loop is connected with a background computer through a communication cable; and the record, the monitoring and danger alarm of the overvoltage state are realized through the background computer. The device provided by the invention has the effect that the contact network overvoltage protection device is used for overvoltage protection at split phase place of the contact network and for preventing and protecting the line from overvoltage due to thundering and lightening, protecting the line and electric power substation devices, and ensuring the safe and reliable operation of a contact network. The device can integrate operational overvoltage and thundering overvoltage protection into a whole, can monitor and record the overvoltage states in real time, and can alarm in danger; and a full-sealed structure is adopted, and the device is safe and maintaining-free.
Description
Technical field
The present invention relates to a kind of contact network overvoltage protection device.
Background technology
Electric railway is the inexorable trend of railway development, and the important component part of electric railway is contact line.Contact line is that single phase power supply ，Er electric substation powers and is generally two-phase power supply to contact line, for keeping two-phase for electric equilibrium, so there is electric phase-splitting on contact line.The mode of current domestic electric phase-splitting mainly contains two kinds, and a kind of is device type phase-separated, and a kind of is articulated type phase-splitting.At electricity, divide and get along, there is no electricity, when electric locomotive by time can have electricity through one---without electricity---has electric process, in this process, owing to having capacitive, inductive element in the switching of circuit breaker and electric railway equipment, can produce the switching overvoltage of high frequency, high amplitude.
The generation of switching overvoltage can cause the power transformation disconnected tripping operation of locomotive main in one's power, may puncture the clearance for insulation of equipment when serious, causes security incident.In certain office, did research, and in 80 components, got along and select 9 points to test, data measured is 40 groups altogether, has overvoltage 11 times, more than wherein once reaching 86kV, has surpassed the withstand voltage 85kV of equipment.Through this experiment, the clearer and more definite threat of switching overvoltage to electric railway safe operation.
Current domestic research overvoltage protection a lot; for example the rc absorber of Xi'an ChanHe group research prevents switching overvoltage on contact line; but also there is drawback: the one, rc absorber comes can not play a protective role in lightning overvoltage temporarily; also may cause and itself damage; the 2nd, can not carry out Real-Time Monitoring to the operation of rc absorber, can not judge in time the superpotential state of contact line.Cause promoting widely.For example the overvoltage protection device of the female friend's development in Shanghai, can prevent lightning overvoltage effectively, but incompetent unable to 2 times, the 3 times switching overvoltages to contact line voltage, nor the running status of energy Real-Time Monitoring overvoltage protection device., Lanzhou friendship large as southwest friendship also all carried out a large amount of research to contact line switching overvoltage greatly, but there is no actual product in addition.These problems have all caused the blank of domestic current contact line overvoltage protection product, strong prerequisite are provided also to the development of our contact network overvoltage protection device.
External research in the switching overvoltage of vacuum switch early; mainly to utilize rc absorber to suppress the overvoltage that vacuum switch produces in operating process; and be widely used; but the protection for the switching overvoltage of contact line; because contact line is in open air; and circumstance complication, is not widely used.
Based on above problem ，Wo company to contact line superpotential protection carried out large quantity research, and change into product contact network overvoltage protection device.
Summary of the invention
For solving above technical problem, the object of this invention is to provide a kind of contact network overvoltage protection device and mainly contain and possess following functions: whole device adopts enclosed construction, security maintenance-free; Switching overvoltage can be collected and lightning overvoltage is protected simultaneously; Can be to the real-time monitoring record of superpotential situation and energy danger warning.
For realizing goal of the invention, the technical solution used in the present invention is to provide a kind of contact network overvoltage protection device, wherein: this device includes insulation column, spray-by-type fuse, bushing, cabinet, low-tension bushing, support channel-section steel, electric discharge monitoring counter, communication current table, insulated mounting plate, resistor, busbar, capacitor, lightning arrester, cable, base support, heater, temperature and humidity controller, telecommunication cable, background computer, at the top of described cabinet, insulation column and bushing have been bolted, one side of cabinet has been bolted low-tension bushing, in the bottom of described cabinet, be bolted support channel-section steel, the front panel of cabinet is provided with insulated mounting plate, bottom of cabinet bulk face is provided with base support,
The bolt at insulation column top connects one end of spray-by-type fuse, and the other end of spray-by-type fuse is connected with the top bolt of bushing; Insulated mounting plate is provided with electric discharge monitoring counter, communication current table; The upper bolt in base support middle part is connected with capacitor and lightning arrester, and capacitor top is connected with busbar, resistor in turn, and bushing is connected with resistor and lightning arrester by cable; Bushing, cable, resistor, busbar, capacitor, communication current table, low-tension bushing connect successively, form switching overvoltage and protect a loop; Bushing, cable, lightning arrester, electric discharge monitoring counter, low-tension bushing connect successively, form the another loop of atmospheric over voltage protection; One side of base support is provided with heater and temperature and humidity controller, and communication current table is connected with background computer by telecommunication cable.
Effect of the present invention is that this application of installation divides and gets along in contact line, when electric locomotive passes through, can effectively eliminate the impact of switching overvoltage on locomotive and contact line circuit and traction substation, effectively solved locomotive by time the transient overvoltage insulation breakdown or the tripping operation that cause, guarantee the operation that contact line circuit is safe and reliable; In lightning overvoltage, come temporarily, can effectively eliminate the impact of lightning overvoltage on contact line circuit and traction substation by lightning arrester.
Due to this primacy in technical pattern of device and the economy in price, can embody following advantage:
1, can integrate switching overvoltage and atmospheric over voltage protection;
2, product adopts totally enclosed type, has accomplished security maintenance-free;
3, can be to superpotential realtime monitoring record and energy danger warning.
Accompanying drawing explanation
Fig. 1 is the front view of contact network overvoltage protection device of the present utility model;
Fig. 2 is contact network overvoltage protection device internal structure schematic diagram of the present utility model;
Fig. 3 is the chassis supporting stand structure schematic diagram of powder operation device of the present utility model.
In figure:
1, insulation column 2, spray-by-type fuse 3, bushing
4, cabinet 5, low-tension bushing 6, support channel-section steel
7, electric discharge monitoring counter 8, communication current table 9, insulated mounting plate
10, resistor 11, busbar 12, capacitor
13, lightning arrester 14, cable 15, base support
16, heater 17, temperature and humidity controller 18, communication cable
19, background computer
Embodiment
By reference to the accompanying drawings the structure of contact network overvoltage protection device of the present invention is illustrated.
As Fig. 1, 2, shown in 3, the structure of contact network overvoltage protection device of the present invention is: contact network overvoltage protection device, this device includes insulation column 1, spray-by-type fuse 2, bushing 3, cabinet 4, low-tension bushing 5, support channel-section steel 6, electric discharge monitoring counter 7, communication current table 8, insulated mounting plate 9, resistor 10, busbar 11, capacitor 12, lightning arrester 13, cable 14, base support 15, heater 16, temperature and humidity controller 17, telecommunication cable 18, background computer 19, insulation column 1 and bushing 3 at the top of described cabinet 4, have been bolted, one side of cabinet 4 has been bolted low-tension bushing 5, in the bottom of described cabinet 4, be bolted and supported channel-section steel 6, the front panel of cabinet 4 is provided with insulated mounting plate 9, cabinet 4 bottom faces are provided with base support 15,
The bolt at insulation column 1 top connects one end of spray-by-type fuse 2, and the other end of spray-by-type fuse 2 is connected with the top bolt of bushing 3; Insulated mounting plate 9 is provided with electric discharge monitoring counter 7, communication current table 8; On base support 15 middle parts, bolt is connected with capacitor 12 and lightning arrester 13, and capacitor 12 tops are connected with busbar 11, resistor 10 in turn, and bushing 3 is connected with resistor 10 and lightning arrester 13 by cable 14.Bushing 3, cable 14, resistor 10, busbar 11, capacitor 12, communication current table 8, low-tension bushing 5 connect successively, form switching overvoltage and protect a loop; Bushing 3, cable 14, lightning arrester 13, electric discharge monitoring counter 7, low-tension bushing 5 connect successively, form the another loop of atmospheric over voltage protection.One side of base support 15 is provided with heater 16 and temperature and humidity controller 17, and communication current table 8 is connected with background computer 19 by telecommunication cable 18.
Contact network overvoltage protection device function of the present invention is achieved in that
Can collect switching overvoltage and lightning overvoltage is protected simultaneously, when contact line overvoltage come interim, resistor 10 and capacitor 12 actions and connect contact line return wire ground connection by communication current table 8, low-tension bushing 5.Resistor 10 is mainly used to consume superpotential a part of power, and capacitor 12 is used for reducing the steepness of first peak value of overvoltage, and the two combination can be reduced to the switching overvoltage of the high amplitude of high frequency in certain limit.The port of communication current table 8 and background computer 19 are by telecommunication cable 18 real time communication, and staff can real-time monitor superpotential state in background computer 19, and background computer 19 can record overvoltage value by autostore.When device breaks down, such as situations such as electric capacity puncture, background computer 19 can send danger alarm signal automatically.
When lightning overvoltage is come temporarily, lightning arrester 13 actions, and connect contact line return wire ground connection by electric discharge monitoring counter 7, low-tension bushing 5.
The working portion of whole device is all closed in cabinet 1, and is greater than the clearance for insulation of regulation, and people does not directly reach electrified body, safe and reliable.Cabinet 1 itself plays the effect of rain-proof dust-proof, and can ventilate, and heater 16 and temperature and humidity controller 17 are set in inside, can keep the constant of cabinet temperature, and whole device is non-maintaining.
In device, spray-by-type fuse 2 plays the short-circuit protection effect to whole device, and when contact line circuit is short-circuited, spray-by-type fuse 2 fusing, disconnect whole device and contact line, play the protective effect to device.
The key issue that contact network overvoltage protection device of the present invention solves is:
Can collect switching overvoltage and lightning overvoltage is protected simultaneously, switching overvoltage is come interim, resistor 10 and capacitor 12 actions and connect contact line return wire by communication current table 8, low-tension bushing 5; When lightning overvoltage is come temporarily, lightning arrester 13 actions, and connect contact line return wire by electric discharge monitoring counter 7, low-tension bushing 5.
The port of communication current table 8 is connected with long-range background computer 19 by telecommunication cable 18, realizes record, monitoring and the danger warning of overvoltage condition.
The protection that can integrate switching overvoltage and lightning overvoltage, can realize monitoring, record and the danger warning of overvoltage condition, security maintenance-free that can implement device.
Claims (2)
1. a contact network overvoltage protection device, it is characterized in that: this device includes insulation column (1), spray-by-type fuse (2), bushing (3), cabinet (4), low-tension bushing (5), support channel-section steel (6), electric discharge monitoring counter (7), communication current table (8), insulated mounting plate (9), resistor (10), busbar (11), capacitor (12), lightning arrester (13), cable (14), base support (15), heater (16), temperature and humidity controller (17), telecommunication cable (18), background computer (19), insulation column (1) and bushing (3) at the top of described cabinet (4), have been bolted, one side of cabinet (4) has been bolted low-tension bushing (5), in the bottom of described cabinet (4), be bolted support channel-section steel (6), the front panel of cabinet (4) is provided with insulated mounting plate (9), cabinet (4) bottom faces is provided with base support (15), the bolt at insulation column (1) top connects one end of spray-by-type fuse (2), and the other end of spray-by-type fuse (2) is connected with the top bolt of bushing (3), insulated mounting plate (9) is provided with electric discharge monitoring counter (7), communication current table (8), on base support (15) middle part, bolt is connected with capacitor (12) and lightning arrester (13), capacitor (12) top is connected with busbar (11), resistor (10) in turn, and bushing (3) is connected with resistor (10) and lightning arrester (13) by cable (14), bushing (3), cable (14), resistor (10), busbar (11), capacitor (12), communication current table (8), low-tension bushing (5) connect successively, form switching overvoltage and protect a loop, bushing (3), cable (14), lightning arrester (13), electric discharge monitoring counter (7), low-tension bushing (5) connect successively, form the another loop of atmospheric over voltage protection, one side of base support (15) is provided with heater (16) and temperature and humidity controller (17), and communication current table (8) is connected with background computer (19) by telecommunication cable (18).
2. contact network overvoltage protection device according to claim 1, is characterized in that: described overvoltage protection is a Full-closed integral, non-maintaining structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110395916.8A CN102412509B (en) | 2011-12-02 | 2011-12-02 | Contact network overvoltage protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110395916.8A CN102412509B (en) | 2011-12-02 | 2011-12-02 | Contact network overvoltage protection device |
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| Publication Number | Publication Date |
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| CN102412509A CN102412509A (en) | 2012-04-11 |
| CN102412509B true CN102412509B (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110395916.8A Active CN102412509B (en) | 2011-12-02 | 2011-12-02 | Contact network overvoltage protection device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106653329B (en) * | 2016-11-29 | 2019-04-30 | 国网河南省电力公司中牟县供电公司 | Transformer safety facility auxiliary repair system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5532897A (en) * | 1994-05-27 | 1996-07-02 | Lightning Eliminators & Consultants, Inc. | High-voltage surge eliminator |
| EP2287990A1 (en) * | 2009-08-18 | 2011-02-23 | ABB Research Ltd. | A device protecting against high frequency overvoltage |
| CN201766358U (en) * | 2010-09-07 | 2011-03-16 | 陕西同远机电有限公司 | Monopole type combined overvoltage protector |
| CN102142680A (en) * | 2011-05-11 | 2011-08-03 | 陕西同远机电有限公司 | Intelligent resistance-capacitance absorption and over-voltage comprehensive protection device |
-
2011
- 2011-12-02 CN CN201110395916.8A patent/CN102412509B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5532897A (en) * | 1994-05-27 | 1996-07-02 | Lightning Eliminators & Consultants, Inc. | High-voltage surge eliminator |
| EP2287990A1 (en) * | 2009-08-18 | 2011-02-23 | ABB Research Ltd. | A device protecting against high frequency overvoltage |
| CN201766358U (en) * | 2010-09-07 | 2011-03-16 | 陕西同远机电有限公司 | Monopole type combined overvoltage protector |
| CN102142680A (en) * | 2011-05-11 | 2011-08-03 | 陕西同远机电有限公司 | Intelligent resistance-capacitance absorption and over-voltage comprehensive protection device |
Non-Patent Citations (4)
| Title |
|---|
| ±800kV直流系统过电压保护和绝缘配合研究;周沛洪等;《高电压技术》;20061231;第32卷(第12期);第125-132页 * |
| 周沛洪等.±800kV直流系统过电压保护和绝缘配合研究.《高电压技术》.2006,第32卷(第12期),第125-132页. |
| 复合式过电压保护装置的选用分析;姜坛等;《铜业工程》;20110228(第1期);第66-68页 * |
| 姜坛等.复合式过电压保护装置的选用分析.《铜业工程》.2011,(第1期),第66-68页. |
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| CN102412509A (en) | 2012-04-11 |
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Denomination of invention: Contact network overvoltage protection device Effective date of registration: 20150423 Granted publication date: 20140212 Pledgee: Tianjin Dongfang Haixin SME Company limited by guarantee Pledgor: CHUANTIE ELECTRIC (TIANJIN) GROUP Co.,Ltd. Registration number: 2015120000027 |
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Address after: 300300 Tianjin Jinqiao Industrial Park, Dongli, Sichuan railway No. 3 Patentee after: CHUANTIE ELECTRIC (TIANJIN) CO.,LTD. Address before: 300300 Tianjin Jinqiao Industrial Park, Dongli, Sichuan railway No. 3 Patentee before: CHUANTIE ELECTRIC (TIANJIN) GROUP Co.,Ltd. |
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