CN201360144Y - Induced voltage suppressor - Google Patents
Induced voltage suppressor Download PDFInfo
- Publication number
- CN201360144Y CN201360144Y CNU2009200316193U CN200920031619U CN201360144Y CN 201360144 Y CN201360144 Y CN 201360144Y CN U2009200316193 U CNU2009200316193 U CN U2009200316193U CN 200920031619 U CN200920031619 U CN 200920031619U CN 201360144 Y CN201360144 Y CN 201360144Y
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- electromotive force
- utility
- line
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- circuit
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Abstract
The utility model relates to a device for suppressing line-frequency induction voltage on the sheaths of optical cables and electric cables along an electrified railway, in particular to a line-frequency induction voltage suppressor. In an AC electrified railway, the metal sheath of a communication cable parallel to a power supply cable tends to give birth to superimposed longitudinal electromotive force interference. As far as the utility model is concerned, a trapped wave type LC suppression circuit is connected in parallel between the communication cable and the ground, and meanwhile, a secondary lightning protection component made up of a gas-discharge tube and a varistor is connected in parallel. The suppressor can effectively suppress interference induced by the communication cable, thereby improving the capability of the line to resist induction stroke. The utility model has the characteristics of simple structure and obvious effect.
Description
Technical field
The utility model relates to the line-frequency induction voltage suppression device of a kind of electric railway optical cable along the line, cable sheath.
Technical background
Along with popularizing and development of electric railway, the communications cable that lays along the line also increases considerably.Because the electric power system electric current is big, therefore distance can produce the induction longitudinal electromotive force on parallel communications cable metal sheath, the communications cable and connection device thereof are caused potential hazard, simultaneously, the attendant is also had potential danger.
The utility model content
The purpose of this utility model is the longitudinal electromotive force that arrives for the line-frequency induction that suppresses parallel railway optical cable along the line, cable sheath, and a kind of inhibitor that can conveniently install and can effectively protect the communications cable and maintenance personal's safety is provided.
The utility model is achieved in that mainly suppressing circuit by electromotive force forms with induction thunder energy release circuit.Electromotive force suppresses circuit and adopts the LC trap to suppress circuit: promptly, between the communications cable and the earth, and connect the concatermer of inductance and electric capacity; form and suppress module; the resonance point that suppresses module is equivalent to power frequency energy short circuit over the ground on power frequency, and the signal of other frequencies is protected.
During making, adopt two oil immersed type electric capacity of series connection, can improve the voltage endurance capability of capacitive part; During use, capacitance terminal is connected to the earth, can reduces the energy that is hit of electric capacity.More than 2 reliabilities that improve inhibitor greatly.
The beneficial effects of the utility model are, can improve the safe class of communication line, reduce the probability that damages, and simultaneously, the personal safety that ensures the attendant are played positive role
Description of drawings
Fig. 1 is whole circuit theory diagrams;
Fig. 2 is that electromotive force suppresses circuit diagram;
Fig. 3 is an induction thunder energy release graphics.
1 and 2 is connecting line lead-in wires among the figure, and L1 is an inductance, and C1, C2 are oil immersed type electric capacity, and Q1 is a gas discharge tube, and RV is a piezo-resistance.
Specific implementation method
For the utility model is described further, below in conjunction with embodiment of accompanying drawing narration.
Fig. 1 has shown whole circuit structure, is to suppress circuit (Fig. 2) by electromotive force to combine with induction thunder energy release circuit (Fig. 3).The function that electromotive force suppresses circuit be in longitudinal electromotive force to a safe range that suppresses to sense on the cable armor (＜50Vrms); The function of induction thunder energy release circuit is that the thunder energy of sensing on the cable armor is released over the ground.
Fig. 2 is the structure that electromotive force suppresses circuit, is to be made of an inductance (L1) and two electric capacity (C1 and C2).
Fig. 3 is an induction thunder energy release graphics, is to be made of gas discharge tube (Q1) and piezo-resistance (RV).
Connect this induced electromotive force inhibitor along the railway on the cable armor, before the connection, the induced electromotive force on the test line is 25.6V (rms), and after the connection inhibitor, induced electromotive force is reduced to 3.8V (rms).Still from the result of actual measurement, all show as from theory, the size of longitudinal induction electromotive force and supply current are with also line length is proportional, above data are the measured value of a particular segment, under abominable situation, this induced electromotive force can increase substantially, after adopting this inhibitor, can obviously induced electromotive force be reduced.
Claims (3)
1, induced voltage suppressor, it is characterized in that: suppress circuit by electromotive force and combine with induction thunder energy release circuit, electromotive force suppresses circuit and adopts the LC trap to suppress circuit, promptly, connect between lead-in wire (1) and the earth connection lead-in wire (2) at the communications cable, and connect the concatermer of inductance (L1) and electric capacity (C), and to form and suppress module, the resonance point that suppresses module is on power frequency.
2. induced voltage suppressor according to claim 1 is characterized in that: said the earth connects lead-in wire (2), and its earth terminal connects the capacitance terminal (C2) that the LC trap suppresses module.
3. induced voltage suppressor according to claim 1 is characterized in that: the concatermer of described electric capacity (C) adopts two oil immersed type electric capacity (C1 and C2) of series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200316193U CN201360144Y (en) | 2009-01-06 | 2009-01-06 | Induced voltage suppressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200316193U CN201360144Y (en) | 2009-01-06 | 2009-01-06 | Induced voltage suppressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201360144Y true CN201360144Y (en) | 2009-12-09 |
Family
ID=41425909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200316193U Expired - Lifetime CN201360144Y (en) | 2009-01-06 | 2009-01-06 | Induced voltage suppressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201360144Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102487248A (en) * | 2011-03-05 | 2012-06-06 | 吴永恒 | Transmission line induced electricity eliminating device |
| CN103280794A (en) * | 2013-06-14 | 2013-09-04 | 成都锐奕信息技术有限公司 | Surging resistant and reverse-connection resistant port |
| CN103296662A (en) * | 2013-06-14 | 2013-09-11 | 成都锐奕信息技术有限公司 | Port with overcurrent protection function and anti-surge function |
| CN103715679A (en) * | 2013-12-11 | 2014-04-09 | 四川中光防雷科技股份有限公司 | Thunder and lightning storage and protection method and device thereof based on energy storage by capacitor |
| CN104868458A (en) * | 2015-05-27 | 2015-08-26 | 山东电工电气日立高压开关有限公司 | Induced voltage absorption device and method thereof |
-
2009
- 2009-01-06 CN CNU2009200316193U patent/CN201360144Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102487248A (en) * | 2011-03-05 | 2012-06-06 | 吴永恒 | Transmission line induced electricity eliminating device |
| CN102487248B (en) * | 2011-03-05 | 2014-04-09 | 吴永恒 | Transmission line induced electricity eliminating device |
| CN103280794A (en) * | 2013-06-14 | 2013-09-04 | 成都锐奕信息技术有限公司 | Surging resistant and reverse-connection resistant port |
| CN103296662A (en) * | 2013-06-14 | 2013-09-11 | 成都锐奕信息技术有限公司 | Port with overcurrent protection function and anti-surge function |
| CN103715679A (en) * | 2013-12-11 | 2014-04-09 | 四川中光防雷科技股份有限公司 | Thunder and lightning storage and protection method and device thereof based on energy storage by capacitor |
| CN103715679B (en) * | 2013-12-11 | 2017-02-15 | 四川中光防雷科技股份有限公司 | Thunder and lightning storage and protection method and device thereof based on energy storage by capacitor |
| CN104868458A (en) * | 2015-05-27 | 2015-08-26 | 山东电工电气日立高压开关有限公司 | Induced voltage absorption device and method thereof |
| CN104868458B (en) * | 2015-05-27 | 2018-09-28 | 山东电工电气日立高压开关有限公司 | A kind of induced voltage absorption plant and its method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Xi'an Radiocom Systems Co., Ltd. Cai Wu Document name: Notification of Approving Refund |
|
| C56 | Change in the name or address of the patentee |
Owner name: XI'AN LEIDI INFORMATION TECHNOLOGY CO., LTD. Free format text: FORMER NAME: XI'AN RADIODETECTION CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 710000 Shaanxi city of Xi'an province high tech Zone Branch Road, No. 168 West Technology Park C building room 620 Patentee after: XI'AN RADIO-OFCAM INFORMATION TECHNOLOGY CO., LTD. Address before: 710075 B617, Jiao Tong Science Park, No. 99 Yan Xiang Road, Shaanxi, Xi'an Patentee before: Xi'an Radiocom Systems Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091209 |