CN104192026A - Power switching based electric disconnector for electrified railway overhead line system and monitoring method thereof - Google Patents
Power switching based electric disconnector for electrified railway overhead line system and monitoring method thereof Download PDFInfo
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- CN104192026A CN104192026A CN201410475158.4A CN201410475158A CN104192026A CN 104192026 A CN104192026 A CN 104192026A CN 201410475158 A CN201410475158 A CN 201410475158A CN 104192026 A CN104192026 A CN 104192026A
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Abstract
The invention provides a power switching based electric disconnector for an electrified railway overhead line system and a monitoring method thereof. A monitoring circuit of the disconnector in an indoor remote monitoring device comprises a control circuit, a motor power circuit and a position signal circuit. The motor power circuit and the position signal circuit in the indoor remote monitoring device are connected with a direct current motor and an auxiliary connection in a disconnector operating mechanism box through cables, respectively; a relay connection of the control circuit in the indoor remote monitoring device is serially connected to the motor power circuit; a relay connection of the position signal circuit is serially connected to the control circuit. When alternating current services as monitoring power, a first rectifier module and a second rectifier module are connected to a power supply of the motor power circuit and that of the position signal circuit respectively, and direct current is output for the motor power circuit and the position signal circuit. The power switching based electric disconnector and the monitoring method thereof have the advantages that an operating environment for electronic devices in the control circuit is improved, capacity of the system to resist interference is improved, maloperation of a motor occurring after external induction voltage runs in is avoided, chances that switch position signals are mistakenly displayed are slimmed, and running reliability of the disconnector for the overhead line system is improved.
Description
Technical field
The invention belongs to the automation field of railway electrification engineering, be specially electrification railway contact net electric isolating switch and method for supervising based on power supply switching type.
Background technology
Electrified railway traction power supply system is that the disconnector of contact system power supply adopts motor-operating mechanism conventionally, includes remote monitor and control in.In isolator operating mechanism case, arrange a set of by electromagnetic relay, the alternating current control circuit of the element such as AC contactor composition, this circuit is connected with long-distance monitorng device by control cables; A set of alternating current 220V motor operation power circuit is set in operating mechanism case in addition, in long-term state with voltage, is connected with motor through the contactless switch contact of control circuit.When sending, control monitor unit in institute closes a floodgate or separating brake instruction, send a level signal by control cables to isolator operating mechanism, the control circuit in actuating mechanism, makes to be connected on the contactless switch junction closure in power circuit, the motor rotation that switches on power, completes combined floodgate or the separating brake of disconnector.When closing a floodgate or after separating brake puts in place, the contactless switch that control circuit makes to be connected in power circuit is opened, and cuts off motor power.Mainly there is following problem in this method for supervising:
(1) power circuit in isolator operating mechanism case is in long-term electriferous state, long-distance cable control circuit is subject to induced voltage and disturbs, disturbing pulse triggers isolator operating mechanism case inner control circuit after invading, misconnection three-way motor power circuit, causes disconnector misoperation.
(2) control circuit is arranged in isolator operating mechanism case this in outdoor, work under bad environment, and easily et out of order, causes and cannot normally work, and causes disconnector misoperation or tripping and does.
(3) disconnector closing position or open position signal circuit adopt interchange conventionally, are equally easily subject to induced voltage and disturb, and cause the switch position of demonstration to occur mistake.
(4) for solution control circuit, position signal display circuit are subject to the problem that outside induced voltage disturbs, take at present optical fiber monitoring mode, but photoelectric conversion device is easy et out of order under low-temperature condition, cause and control mistake or malfunctioning, therefore not from deal with problems at all.
On contact system, disconnector is the visual plant that tractive power supply system changes system rescue under operation scheme or faulty condition, conventional monitor mode is subject to external environmental interference impact, cause on contact system disconnector misoperation or tripping to happen occasionally, tractive power supply system reliability service is brought to hidden danger, be therefore badly in need of disconnector Novel monitoring mode on contact system to study.
Summary of the invention
Be subject to external environment condition disturbing influence in order to solve the conventional method for supervising of contact net electric isolating switch, produce misoperation or tripping work and position signal and show wrong problem, the object of this invention is to provide a kind of electrification railway contact net electric isolating switch and method for supervising based on power supply switching type, fundamentally stop interference, thereby increasing substantially the reliability of monitoring.
For achieving the above object, the technical scheme that the present invention takes is to provide a kind of electrification railway contact net electric isolating switch based on power supply switching type, this electric isolating switch is controlled by a traction power supply scheduling distant place, in isolator operating mechanism case, be provided with interconnective DC machine, motor range switch and auxiliary contact, and be connected with indoor long-distance monitorng device, wherein: the supervisory circuit that is provided with disconnector in described indoor long-distance monitorng device, the supervisory circuit of described disconnector includes control circuit, motor power circuit, position signal circuit, the motor power circuit of described control monitor unit is connected with DC machine and auxiliary contact in isolator operating mechanism case respectively by cable with position signal circuit, the relay tip of the control circuit of described control monitor unit is serially connected in motor power circuit, the relay tip of position signal circuit is serially connected in control circuit, in the time that monitoring power supply is interchange, in described indoor long-distance monitorng device, in the power supply of motor power circuit and position signal circuit, be connected with respectively the first rectification module, the second rectification module, be motor power circuit and position signal circuit output direct current (DC).
The method for supervising of the described electrification railway contact net electric isolating switch based on power supply switching type is also provided simultaneously.
Effect of the present invention is:
(1) supervisory circuit of contact net electric isolating switch is installed concentratedly in indoor monitoring apparatus, improved the running environment of supervisory circuit electronic devices and components, system rejection to disturbance ability approaches 100%.
(2), after disconnector divide-shut brake has moved, control circuit automatic cut-off motor power supply, causes motor misoperation after fundamentally having avoided outside induced voltage to scurry into.
(3) disconnector position signal shows employing direct current circuit, has improved the ability of resisting external disturbance, and mistake indicating probability reduces approximately 50%.
(4) isolator operating mechanism structure is greatly simplified, and saves manufacturing cost, and fault rate reduces approximately 70%.
Brief description of the drawings
Fig. 1 is of the present invention based on power supply switching type contact net electric isolating switch method for supervising functional block diagram;
Fig. 2 is of the present invention based on power supply switching type contact net electric isolating switch method for supervising circuit diagram.
Detailed description of the invention
By reference to the accompanying drawings electrification railway contact net electric isolating switch and the method for supervising based on power supply switching type of the present invention is illustrated.
The mentality of designing that the present invention is based on power supply switching type electrification railway contact net electric isolating switch method for supervising is based on cancelling the conventional control circuit that is subject to ambient interference and the rectification module arranging in isolator operating mechanism case, change concentrated setting chamber in interior long-distance monitorng device, in the time that ocs isolating switch need to move, drop into operating power, moved the long-distance monitoring method of rear rupturing operation power supply.This scheme cancellation isolator operating mechanism is subject to the control circuit of ambient interference, only retains motor, motor range switch and auxiliary contact in operating mechanism case.After closing a floodgate or separating brake instruction send, connect disconnector motor power circuit, close a floodgate or separating brake complete after automatic cut-off motor power circuit and control circuit, splitting or integrating gate position signal adopts the strong direct current circuit of anti-electromagnetic interference capability.
As shown in Figure 1, the electrification railway contact net electric isolating switch of this kind of power supply switching type, this electric isolating switch is controlled by a traction power supply scheduling distant place, in isolator operating mechanism case, be provided with interconnective DC machine, motor range switch and auxiliary contact, and be connected with indoor long-distance monitorng device.In indoor long-distance monitorng device, be provided with the supervisory circuit of disconnector, include control circuit, motor power circuit, position signal circuit.Motor power circuit is connected with DC machine and auxiliary contact in isolator operating mechanism case respectively by cable with position signal circuit, control circuit relay tip is serially connected in motor power circuit, and position signal circuit relay contact is serially connected in control circuit; Monitoring power supply is when exchanging, and in described indoor long-distance monitorng device, the power supply of motor power circuit and position signal circuit is connected with the first rectification module AD1, the second rectification module AD2 in respectively, is that motor power circuit and position signal circuit are exported direct current (DC).Position signal circuit conducting all the time in indoor long-distance monitorng device possesses turn-on condition according to disconnector current location by corresponding combined floodgate or the sub-gate circuit of relay tip setup control circuit being serially connected in control circuit; When traction power supply scheduling is correctly sent after the combined floodgate or separating brake instruction of disconnector, the corresponding relay of indoor long-distance monitorng device inner control circuit is charged, be serially connected in the corresponding relay tip closure in motor power circuit, conducting closing circuit or sub-gate circuit, disconnector starts to close a floodgate or separating brake action, after control circuit conducting, can automatically keep, ensure the lasting power transmission in motor action process; After disconnector divide-shut brake puts in place, position signal circuit is by correspondence position relay tip trigger control circuit, and control circuit cuts off DC motor power automatically; After motor power circuit cuts off, control circuit auto-breaking, control circuit, for guaranteeing power-off, disconnects after triggering on the one hand, on the other hand by disconnecting after the time meter time delay in control circuit automatically by position signal circuit relay.
As shown in Figure 2, of the present invention is single phase A.C. 220V based on power supply switching type contact net electric isolating switch supervisory circuit power supply, main electric elements is by closing contactor HJ, separating brake contactless switch FJ, closing operation position relay HWJ, open position relay FWJ, closing time relay HSJ, opening time relay FSJ, reclosing command contact HY, separating brake instruction contact FY, rectification module AD1, and AD2 and motor range switch auxiliary contact X-1～X-6 forms.Motor power circuit and the rectification of signal circuit are become direct current circuit by the first rectification module AD1, the second rectification module AD2.
Current during in closing position when disconnector, corresponding motor range switch is often opened auxiliary contact X-1, X-3, X-5 closure, and normally closed auxiliary contact X-2, X-4, X-6 open; When disconnector current during in open position, corresponding motor range switch is often opened auxiliary contact X-1, X-3, X-5 opens, normally closed auxiliary contact X-2, X-4, X-6 closure, therefore when disconnector is in closing a floodgate or when open position, corresponding closing operation position relay HWJ or open position relay FWJ have one charged, send correspondence position signal.Closing operation position relay normal opened contact HWJ-1 or open position relay normally open contact FWJ-1 respective closed in control circuit simultaneously.
When disconnector is in open position, when the operating personal of traction power supply scheduling sends reclosing command, combined floodgate order contact HY connects, through the open position relay normally open contact FWJ-1 of closing time relay normally closed contact HSJ-1, closure, closing contactor HJ is charged, closing contactor normal opened contact HJ-1 closure, keeps this circuit, and closing time relay HSJ is charged simultaneously.Closing contactor normal opened contact HJ-2, HJ-3 closure, motor is subject to be rotated in the forward after electricity, disconnector closes a floodgate, and after action puts in place, the normally closed auxiliary contact X-2 of motor range switch, X-4, X-6 open, open position relay FWJ dead electricity, normal opened contact FWJ-1 opens, closing contactor HJ dead electricity, and normal opened contact HJ-1, HJ-2, HJ-3 open, motor M power circuit disconnects, and control circuit disconnects simultaneously.If motor tripping work or travel switch auxiliary contact fault, pass through closing time relay HSJ deferred action, setting time is greater than motor action arrival time, and normally closed contact HSJ-1 opens, cutting-off controlling circuit.
When disconnector is in closing position, when operator sends separating brake instruction, motor contrarotation, disconnector separating brake, control principle is the same.
The effect of open position relay FWJ and closing operation position relay HWJ is that guarantee disconnector could be connected control circuit in the time of tram, simultaneously automatic cutting-off controlling circuit after action completes.Time relay HSJ, FSJ in support mode guarantee that control circuit can automatically disconnect under any operating mode.
Except position signal circuit, in control monitor unit, all components and parts are only charged in divide-shut brake process, auto-breaking after divide-shut brake.
Claims (3)
1. the electrification railway contact net electric isolating switch based on power supply switching type, this electric isolating switch is controlled by a traction power supply scheduling distant place, in isolator operating mechanism case, be provided with interconnective DC machine, motor range switch and auxiliary contact, and be connected with indoor long-distance monitorng device, it is characterized in that: the supervisory circuit that is provided with disconnector in described indoor long-distance monitorng device, the supervisory circuit of described disconnector includes control circuit, motor power circuit, position signal circuit, the motor power circuit of described control monitor unit is connected with DC machine and auxiliary contact in isolator operating mechanism case respectively by cable with position signal circuit, the relay tip of the control circuit of described control monitor unit is serially connected in motor power circuit, the relay tip of position signal circuit is serially connected in control circuit, in the time that monitoring power supply is interchange, in described indoor long-distance monitorng device, in the power supply of motor power circuit and position signal circuit, be connected with respectively the first rectification module, the second rectification module, be motor power circuit and position signal circuit output direct current (DC).
2. the method for supervising that utilizes the electrification railway contact net electric isolating switch based on power supply switching type described in claim 1, the method includes following steps:
1) the position signal circuit conducting all the time, in described indoor long-distance monitorng device, possesses turn-on condition according to disconnector current location by corresponding combined floodgate or the sub-gate circuit of relay tip setup control circuit being serially connected in control circuit;
2) when traction power supply scheduling is correctly sent after the combined floodgate or separating brake instruction of disconnector, the corresponding relay of indoor long-distance monitorng device inner control circuit is charged, be serially connected in the corresponding relay tip closure in motor power circuit, conducting closing circuit or sub-gate circuit, disconnector starts to close a floodgate or separating brake action;
3), after disconnector divide-shut brake puts in place, position signal circuit is by correspondence position relay tip trigger control circuit, control circuit cuts off DC motor power automatically;
4), motor power cut off after, control circuit auto-breaking.
3. require described method for supervising according to claim 2, it is characterized in that: step 2) in when closing a floodgate or after separating brake instruction sends, can automatically keeping the lasting power transmission in guarantee motor action process after control circuit conducting; After disconnector action puts in place, control circuit, for guaranteeing power-off, disconnects after triggering on the one hand, on the other hand by disconnecting after the time meter time delay in control circuit automatically by position signal circuit relay.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410475158.4A CN104192026B (en) | 2014-09-17 | 2014-09-17 | Based on electrification railway contact net electric isolating switch and the method for supervising of power supply switching type |
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| CN201410475158.4A CN104192026B (en) | 2014-09-17 | 2014-09-17 | Based on electrification railway contact net electric isolating switch and the method for supervising of power supply switching type |
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| CN104192026B CN104192026B (en) | 2016-04-20 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104767259A (en) * | 2015-04-15 | 2015-07-08 | 西南交通大学 | Electric system self-adaption super capacitor and storage battery hybrid energy storage system |
| CN105162255A (en) * | 2015-09-08 | 2015-12-16 | 北京华美煜力电力技术有限公司 | High-reliability remote control switching device |
| CN106933135A (en) * | 2015-12-31 | 2017-07-07 | 北京煜能电气有限公司 | A kind of ocs isolating switch power remote monitor terminal |
| CN108215943A (en) * | 2018-03-07 | 2018-06-29 | 常州安凯特电缆有限公司 | A kind of outdoor Internet device for railway power system, system and method |
| CN108429349A (en) * | 2018-03-30 | 2018-08-21 | 四川汇友电气有限公司 | A kind of control device and method of four-wire system electric isolating switch |
| CN113325758A (en) * | 2021-05-24 | 2021-08-31 | 中国南方电网有限责任公司超高压输电公司柳州局 | Method and device for remotely controlling power supply of intelligent sequential control isolation switch motor of transformer substation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104767259A (en) * | 2015-04-15 | 2015-07-08 | 西南交通大学 | Electric system self-adaption super capacitor and storage battery hybrid energy storage system |
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| CN105162255A (en) * | 2015-09-08 | 2015-12-16 | 北京华美煜力电力技术有限公司 | High-reliability remote control switching device |
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| CN108215943A (en) * | 2018-03-07 | 2018-06-29 | 常州安凯特电缆有限公司 | A kind of outdoor Internet device for railway power system, system and method |
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| CN113325758A (en) * | 2021-05-24 | 2021-08-31 | 中国南方电网有限责任公司超高压输电公司柳州局 | Method and device for remotely controlling power supply of intelligent sequential control isolation switch motor of transformer substation |
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| CN104192026B (en) | 2016-04-20 |
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Address after: 300010 Hebei District, Zhongshan Road, No. 10, Patentee after: China Railway Design Group Limited Address before: 300010 Hebei District, Zhongshan Road, No. 10, Patentee before: China Railway Third Survey and Design Institute Group Ltd. |