CN103595122A - Hot standby switching reliability improving circuit for 25Hz power supply - Google Patents
Hot standby switching reliability improving circuit for 25Hz power supply Download PDFInfo
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- CN103595122A CN103595122A CN201310632039.0A CN201310632039A CN103595122A CN 103595122 A CN103595122 A CN 103595122A CN 201310632039 A CN201310632039 A CN 201310632039A CN 103595122 A CN103595122 A CN 103595122A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The invention provides a hot standby switching reliability improving circuit for a 25Hz power supply. The circuit is arranged on a power supply module, and comprises a voltage and current detection unit, a hot standby switching detection contact unit, a linked control unit and an interlock signal interface, wherein the voltage and current detection unit detects sampled voltage and current output by the power supply module, state signals of the sampled voltage and current are transmitted to the linked control unit via the hot standby switching detection contact unit, and according to the received state signals and interlock signals received by the interlock signal interface, the linked control unit controls whether the power supply module is used as an output power supply or a hot standby power supply. The circuit of the invention can improve the power supply reliability of the power supply module; and state alarm information of a hot standby module is provided, so that states of the hot standby module can be conveniently known at any time.
Description
Technical field
The invention belongs to power-supply device field, more specifically, relate to a kind of hot standby commutation circuit of power supply.
Background technology
Railway signal has replaced former sphere of movements for the elephants type frequency converter by the power electronics power module of high-frequency inversion gradually with 25Hz power supply at present, because also having caused its reliability, the complexity of high frequency electric source reduces, reliably working for proof load equipment, power module has adopted Hot Spare mode, when wherein automatically switching to spare module continuation power supply after a module failure, but because having faults itself, commutation circuit do not detect, and the fault alarm contact of module is partly provided by electric power main circuit, therefore occurred that in actual use the commutation circuit of spare module extremely but cannot provide warning, or the power input line of commutation circuit disconnects equal None-identified and goes out, after will causing primary module failure, spare module also cannot be exported, cause track circuit to have a power failure.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of hot standby commutation circuit of power supply.
For solving the problems of the technologies described above, concrete technical scheme of the present invention is:
A kind of circuit that improves the hot standby switching reliability of 25Hz power supply, it is arranged on power module, comprise electric current and voltage detecting unit, hot standby transition detection junction unit, chain control unit and interlocking signal interface, described electric current and voltage detecting unit detects sampling voltage and the sampling current of power module output, and by sampling voltage, the status signal of sampling current sends described interlocked control unit to by described hot standby transition detection junction unit, it is as out-put supply or as Hot Spare power supply that the interlocking signal that described interlocked control unit receives according to received status signal and interlocking signal interface is controlled described power module.
Also comprise warning circuit unit, described warning circuit unit is connected with described electric current and voltage detecting unit.
Described electric current and voltage detecting unit comprises rail side electric current and voltage detecting unit and partial side electric current and voltage detecting unit, and described rail side electric current and voltage detecting unit comprises the overvoltage of rail side power supply, under-voltage and short trouble detecting unit; Described partial side electric current and voltage detecting unit comprises the overvoltage of partial side power supply, under-voltage and short trouble detecting unit.
Described warning circuit unit comprises rail side power failure warning contact, partial side power failure warning contact and the external output alarm contact of integral module fault, and described rail side power failure warning contact is connected with the external output alarm contact of described integral module fault with after partial side power failure warning contact logical combination.
Normally whether advantage and good effect that the present invention has are: 1) at change-over circuit, partly detect track, locally supplied power source, and provide corresponding working condition contact, improve the reliability of Power supply; 2) when track and the output of local electric power main circuit are connected to the situations such as change-over circuit appearance broken string, can provide failure alarm signal, solve primary module and now cannot be converted to the problem of spare module; 3), when track and the output of local electric power main circuit are connected to the situations such as change-over circuit appearance broken string, spare module also can provide failure alarm signal, cannot learn the problem of spare module good working condition while having solved on-the-spot use; 4) by the contact of the hot standby transition detection relay of power supply of synchronousing working with the power failure alarm relay change-over circuit of interlocking, control, can avoid control switching circuit fault and module does not have the phenomenon of reporting to the police to occur, improved the reliability of system.
Accompanying drawing explanation
Fig. 1 is the theory diagram of this invention structure;
Fig. 2 is circuit theory diagrams of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are further described.
As shown in Figure 1-2, a kind of circuit that improves the hot standby switching reliability of 25Hz power supply, it is arranged on power module, comprise electric current and voltage detecting unit, hot standby transition detection junction unit, chain control unit and interlocking signal interface, described electric current and voltage detecting unit detects sampling voltage and the sampling current of power module output, and by sampling voltage, the status signal of sampling current sends described interlocked control unit to by described hot standby transition detection junction unit, it is as out-put supply or as Hot Spare power supply that the interlocking signal that described interlocked control unit receives according to received status signal and interlocking signal interface is controlled described power module.
Also comprise warning circuit unit, described warning circuit unit is connected with described electric current and voltage detecting unit.
Described electric current and voltage detecting unit comprises rail side electric current and voltage detecting unit and partial side electric current and voltage detecting unit, and described rail side electric current and voltage detecting unit comprises the overvoltage of rail side power supply, under-voltage and short trouble detecting unit; Described partial side electric current and voltage detecting unit comprises the overvoltage of partial side power supply, under-voltage and short trouble detecting unit.
Described warning circuit unit comprises rail side power failure warning contact, partial side power failure warning contact and the external output alarm contact of integral module fault, and described rail side power failure warning contact is connected with the external output alarm contact of described integral module fault with after partial side power failure warning contact logical combination.
Whether this circuit realize detects track, locally supplied power source and taps into after this circuit normal, and provide thus module warning contact and the corresponding signal of hot standby transition detection contact, guaranteed that track, local output still can carry out effective monitoring after tapping into this circuit, while having avoided the failure conditions such as similar broken string, there is no monitoring and module still provides the situation generation of normal signal.
The input of this circuit is connected with railway voltage sample circuit (output VSENSE1), the local voltage sample circuit (output VSENSE2) of power module.
As shown in Figure 2, warning circuit unit comprises rail side power failure warning contact J4, partial side power failure warning contact J5 and the external output alarm contact of integral module fault J6, after the output signal combination of described rail side power failure warning contact J4 and partial side power failure warning contact J5, sends described integral module warning contact J6 to.
The final output of power module is controlled by track output control relay K3 and local output control relay K4.
Rail side electric current and voltage detecting unit comprises track overvoltage detection comparator A1, track is under-voltage detection comparator A2 and track short-circuit detecting comparator A3, A4; Partial side electric current and voltage detecting unit comprises local excess pressure detection comparator A5, local under-voltage detection comparator A6 and local short-circuit detecting comparator A7, A8.
Rail side power failure warning contact comprises rail side power failure alarm relay 1KG1; Partial side power failure warning contact comprises partial side power failure alarm relay 1KJ1; The hot standby transition detection contact of rail side power supply comprises the hot standby transition detection relay of rail side power supply 1KG2; The hot standby transition detection contact of described partial side power supply comprises the hot standby transition detection relay of partial side power supply 1KJ2.
Interlocked control circuit comprises track and local hot standby transition detection contact interface J1, J2, comparator A9, A10, A11, interlocking control relay K1 and K2, described track is connected in hot standby transition detection junction unit with local Hot Spare transition detection contact interface J1, J2.
The normal opened contact of the hot standby transition detection relay of rail side power supply 1KG2 is linked the in-phase end of comparator A9 after being connected in series with the normal opened contact of the hot standby transition detection relay of partial side power supply 1KJ2.
Operation principle: the output of the track on power module main circuit and locally supplied power source is directly tapped in this circuit board, voltage obtains voltage sampling signal VSENSE1 after current rectifying and wave filtering circuit, VSENSE2, by voltage sampling signal VSENSE1, VSENSE2 and current sampling signal ISENSE1, ISENSE2 detects, according to voltage and current sampling signal judge respectively track power supply and locally supplied power source whether normal, rail side and partial side electric current and voltage detect two parts and all control separately a power failure alarm relay 1KG1, 1KJ1 and a hot standby transition detection relay 1KG2, 1KJ2, on commutation circuit plate, directly the power failure warning contact of rail side and partial side is combined and can judge that whether enter into the power supply of change-over circuit normal, and provide corresponding alarm signal.Meanwhile, 1KG2,1KJ2 provide the detection signal of the hot standby conversion of module to interlocked control part according to output detections situation, interlocked control is interlocking signal transmitting terminal in conjunction with first and second pin of interlocking signal interface J31(, third and fourth pin is interlocking signal receiving terminal) receiving end signal, whether be out-put supply, realizing power module is to carry out work as primary module (out-put supply) or as Hot Spare module (stand-by power supply) if controlling power module.
During use, 1.2 pin of the interlocking signal interface J31 of this power module are connected with 3.4 pin of the interlocking signal interface J32 of another power module, and 3.4 pin of J31 are connected with 1.2 pin of J32.
Normally whether the present invention partly detects track, locally supplied power source at change-over circuit, and provides corresponding working condition contact, improves the reliability of Power supply; While being connected to the situations such as change-over circuit appearance broken string at main circuit, can provide failure alarm signal, solve primary module and now cannot be converted to the problem of spare module; When main circuit is connected to the situations such as change-over circuit appearance broken string, spare module also can provide failure alarm signal, cannot learn the problem of spare module good working condition while having solved on-the-spot use.By the contact of the hot standby transition detection relay of power supply of synchronousing working with the power failure alarm relay change-over circuit of interlocking, control, can avoid control switching circuit fault and module does not have the phenomenon of reporting to the police to occur, improved the reliability of system.
Above embodiments of the invention are had been described in detail, but described content is only preferred embodiment of the present invention, can not be considered to for limiting practical range of the present invention.All equalization variations of doing according to the scope of the invention and improvement etc., within all should still belonging to this patent covering scope.
Claims (5)
1. a circuit that improves the hot standby switching reliability of 25Hz power supply, it is arranged on power module, it is characterized in that: comprise electric current and voltage detecting unit, hot standby transition detection junction unit, chain control unit and interlocking signal interface, described electric current and voltage detecting unit detects sampling voltage and the sampling current of power module output, and by sampling voltage, the status signal of sampling current sends described interlocked control unit to by described hot standby transition detection junction unit, it is as out-put supply or as Hot Spare power supply that the interlocking signal that described interlocked control unit receives according to received status signal and interlocking signal interface is controlled described power module.
2. a kind of circuit that improves the hot standby switching reliability of 25Hz power supply according to claim 1, is characterized in that: also comprise warning circuit unit, described warning circuit unit is connected with described electric current and voltage detecting unit.
3. a kind of circuit that improves the hot standby switching reliability of 25Hz power supply according to claim 1 and 2, it is characterized in that: described electric current and voltage detecting unit comprises rail side electric current and voltage detecting unit and partial side electric current and voltage detecting unit, described rail side electric current and voltage detecting unit comprises the overvoltage of rail side power supply, under-voltage and short trouble detecting unit; Described partial side electric current and voltage detecting unit comprises the overvoltage of partial side power supply, under-voltage and short trouble detecting unit.
4. a kind of circuit that improves the hot standby switching reliability of 25Hz power supply according to claim 2, it is characterized in that: described warning circuit unit comprises rail side power failure warning contact, partial side power failure warning contact and the external output alarm contact of integral module fault, described rail side power failure warning contact is connected with the external output alarm contact of described integral module fault with after partial side power failure warning contact logical combination.
5. a kind of circuit that improves the hot standby switching reliability of 25Hz power supply according to claim 1, it is characterized in that: described interlocked control circuit comprises track and local hot standby transition detection contact interface J1, J2, comparator A9, A10, A11, interlocking control relay K1 and K2, described track is connected in hot standby transition detection junction unit with local Hot Spare transition detection contact interface J1, J2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310632039.0A CN103595122A (en) | 2013-11-29 | 2013-11-29 | Hot standby switching reliability improving circuit for 25Hz power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310632039.0A CN103595122A (en) | 2013-11-29 | 2013-11-29 | Hot standby switching reliability improving circuit for 25Hz power supply |
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| CN103595122A true CN103595122A (en) | 2014-02-19 |
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| CN201310632039.0A Pending CN103595122A (en) | 2013-11-29 | 2013-11-29 | Hot standby switching reliability improving circuit for 25Hz power supply |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712276A (en) * | 2017-01-09 | 2017-05-24 | 北京航天自动控制研究所 | Interlocked type medium-frequency power source main unit and auxiliary unit automatic switching circuit |
| CN109600046A (en) * | 2018-10-25 | 2019-04-09 | 张家港市华为电子有限公司 | Failure automatically switches DC-DC converter |
| CN109633291A (en) * | 2018-12-20 | 2019-04-16 | 兰州空间技术物理研究所 | Bias current master backup switching circuit in a kind of space electric field detection system |
| CN115047750A (en) * | 2022-08-15 | 2022-09-13 | 中国电子科技集团公司第十五研究所 | Non-inductive backup circuit board |
| CN116317088A (en) * | 2023-03-29 | 2023-06-23 | 佛山长意云信息技术有限公司 | Automatic switching system for safe power supply of rail transit |
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| CN201201615Y (en) * | 2008-04-02 | 2009-03-04 | 济南瑞通铁路电务有限责任公司 | Intelligent railway signal power supply screen |
| CN201805270U (en) * | 2010-03-15 | 2011-04-20 | 北京国铁路阳技术有限公司 | High-reliability 25Hz electronic power supply with novel detection device |
| CN203225579U (en) * | 2013-04-08 | 2013-10-02 | 陈军 | Switching device for automatic switchover of power supplies |
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| CN1303793A (en) * | 1999-12-17 | 2001-07-18 | 北京特锐电子科技开发有限公司 | Intelligent railway signal power supply system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712276A (en) * | 2017-01-09 | 2017-05-24 | 北京航天自动控制研究所 | Interlocked type medium-frequency power source main unit and auxiliary unit automatic switching circuit |
| CN106712276B (en) * | 2017-01-09 | 2019-09-06 | 北京航天自动控制研究所 | A kind of interlocking-type intermediate frequency power supply major-minor machine automatic switch-over circuit |
| CN109600046A (en) * | 2018-10-25 | 2019-04-09 | 张家港市华为电子有限公司 | Failure automatically switches DC-DC converter |
| CN109633291A (en) * | 2018-12-20 | 2019-04-16 | 兰州空间技术物理研究所 | Bias current master backup switching circuit in a kind of space electric field detection system |
| CN109633291B (en) * | 2018-12-20 | 2020-11-27 | 兰州空间技术物理研究所 | Bias current main backup switching circuit in space electric field detection system |
| CN115047750A (en) * | 2022-08-15 | 2022-09-13 | 中国电子科技集团公司第十五研究所 | Non-inductive backup circuit board |
| CN115047750B (en) * | 2022-08-15 | 2022-11-01 | 中国电子科技集团公司第十五研究所 | Non-inductive backup circuit board |
| CN116317088A (en) * | 2023-03-29 | 2023-06-23 | 佛山长意云信息技术有限公司 | Automatic switching system for safe power supply of rail transit |
| CN116317088B (en) * | 2023-03-29 | 2024-06-14 | 佛山长意云信息技术有限公司 | Automatic switching system for safe power supply of rail transit |
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Application publication date: 20140219 |
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