CN110171325A - Ground automatic neutral-section passing device and method - Google Patents
Ground automatic neutral-section passing device and method Download PDFInfo
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- CN110171325A CN110171325A CN201910355106.6A CN201910355106A CN110171325A CN 110171325 A CN110171325 A CN 110171325A CN 201910355106 A CN201910355106 A CN 201910355106A CN 110171325 A CN110171325 A CN 110171325A
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- phase
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- supply arm
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
- B60M3/04—Arrangements for cutting in and out of individual track sections
Abstract
The present invention relates to trains to cross split-phase technical field, discloses a kind of ground automatic neutral-section passing device and method, solves purely mechanic low switching life in the prior art, safeguards frequent and pure electronic switch problem at high cost.Described device includes: train recognition unit, mechanical switch, electronic switch, current detecting unit, voltage detection unit and logic control element, logic control element are used for when train recognition unit identification train reaches the first phase of contact net supply arm affiliated area, control mechanical switch closure；When identification train reaches differential gap affiliated area, and current detecting unit detects the current phase zero crossing of contact net the first phase supply arm, control mechanical switch is disconnected；When voltage detection unit detects the voltage-phase zero crossing of contact net the second phase supply arm, control electronic switch closes a floodgate；When identifying that train reaches the second phase of contact net supply arm affiliated area, electronic switch separating brake is controlled.The embodiment of the present invention is suitable for ground automatic passing over of neutral section.
Description
Technical field
The present invention relates to trains to cross split-phase technical field, and in particular, to a kind of ground automatic neutral-section passing device and method.
Background technique
China's electric railway exchanges 27.5kV power supply system using single phase industrial frequence, and traction substation provides electric system
110kV or 220kV three-phase electricity be converted into the single phase ac of 27.5kV and supply electricity to traction power supply net, single phase power supply is easy in power grid
Serious negative-sequence current is generated, and the power plant generator that has an impact of negative-sequence current operates normally, and reduces the defeated of power grid
Send ability.Railway department in order to solve this problem, usually connects adjacent traction substation commutation, the confession of difference power supply section
Electric arm phase is different, needs to be arranged neutral section insulator or overlap, thus electric split-phase generates.Electric split-phase is present in electric substation and goes out
Locating for subregion at mouthful between different traction substations, under normal circumstances, domestic railway will have one every 20~30km
Locate electric phase-separating section.
Ground automatic passing over of neutral section is to be powered by surface-based device to differential gap in current mistake split-phase mode, column
Supply arm switching is completed by ground installation when vehicle operates in differential gap, train does not need any operation.As shown in Figure 1, ground is certainly
The principle for moving split-phase is that differential gap is arranged at contact phase separation, be neutral section insulator JY1 between differential gap and supply arm,
JY2, two phase-change switches K1, K2 are connected across on JY1, JY2 respectively, and differential gap power supply completes switching by two phase-change switches.?
Four train position sensor G1~G4 are installed on train driving route.Biography is worked as without electricity in differential gap when not having train to pass through
When sensor G1 detects train arrival, phase-change switch K1 closure, A arm gives differential gap to power；When train, which enters differential gap, reaches G2,
Phase-change switch K1 is disconnected, differential gap power-off, train inertia；When train reaches G3, phase-change switch K2 closure, B arm is to differential gap
Power supply；When train operation is to G4, train enters B arm power supply area, and phase-change switch K1 is disconnected, and differential gap power-off waits next time
Train enters.
Phase-change switch in traditional ground automatic passing over of neutral section is generally mechanical switch or electronic switch.But it purely mechanic opens
The pass service life is low, and maintenance frequently, has overvoltage and shoves.And pure electronic switch is at high cost, equipment land occupation is big.
Summary of the invention
The object of the present invention is to provide a kind of ground automatic neutral-section passing device and methods, solve purely mechanic in the prior art
Frequently and pure electronic switch problem at high cost, mechanical switch is used in combination with electronic switch for low switching life, maintenance,
The performance advantage and cost advantage of two kinds of phase-change switches are taken into account, electronic switch control precision height is played, electrical transient performance is good
Advantage, while, take up little area the advantages of at low cost using mechanical switch.
To achieve the goals above, the present invention provides a kind of ground automatic neutral-section passing device, and described device includes: that train is known
Other unit, for identification position of the driving direction of train and arrival；Mechanical switch is used for when its closure, by contact net
First phase supply arm is differential gap power supply, setting contact net the first phase supply arm and differential gap train drive into side it
Between；Electronic switch, for being differential gap power supply by contact net the second phase supply arm, being arranged described when its closure
Contact net the second phase supply arm and differential gap train are driven out between side；Current detecting unit, for detecting the contact net first
The electric current of phase supply arm；Voltage detection unit, for detecting the voltage of the second phase of contact net supply arm；Logic control list
Member, for controlling the mechanical switch closure when the train recognition unit recognizes train and reaches first position；When described
Train recognition unit recognizes the train and reaches the second position, and the current detecting unit detects the contact net first
When the current phase zero crossing of phase supply arm, controls the mechanical switch and disconnect；Described in being detected when the voltage detection unit
When the voltage-phase zero crossing of contact net the second phase supply arm, controls the electronic switch and close a floodgate；When the train recognition unit
When recognizing train arrival the third place, the electronic switch separating brake is controlled, wherein the first position is located at the contact net
First phase supply arm affiliated area, the second position are located at the differential gap affiliated area, and the third place is located at described
Contact net the second phase supply arm affiliated area.
Further, the voltage detection unit is also used to detect the voltage of the differential gap；The logic control element
It is also used to disconnect when the control mechanical switch, and the voltage detection unit detects that the voltage-phase of the differential gap is zero
Afterwards, when the voltage detection unit detects the voltage-phase zero crossing of the second phase of contact net supply arm, described in control
Electronic switch closes a floodgate.
Further, the logic control element is also used to detect the electricity of the differential gap when the voltage detection unit
Pressing phase is zero, and after the preset time of interval, when the voltage detection unit detects the second phase of contact net supply arm
When voltage-phase zero crossing, controls the electronic switch and close a floodgate.
Further, the mechanical switch is intelligent phase selection vacuum circuit breaker.
Further, the electronic switch is parallel thyristors of playing a reversed role.
Further, described device further include: access breaker, for cutting off circuit when line short.
Further, described device further include: disconnecting switch, for the electrical isolation under circuit inspecting state.
Correspondingly, the embodiment of the present invention provides a kind of ground automatic passing over of neutral section method, the method is applied to the ground
Automatic neutral-section passing device, which comprises when recognizing train arrival first position, control mechanical switch closure；Work as knowledge
When being clipped to the train and reach the second position, and detecting the current phase zero crossing of contact net the first phase supply arm, institute is controlled
State mechanical switch disconnection；When detecting the voltage-phase zero crossing of contact net the second phase supply arm, control electronic switch closes a floodgate；
When recognizing train arrival the third place, the electronic switch separating brake is controlled, wherein the first position is located at the contact
Net the first phase supply arm affiliated area, the second position are located at the differential gap affiliated area, and the third place is located at institute
State contact net the second phase supply arm affiliated area.
Further, described when detecting the voltage-phase zero crossing of contact net the second phase supply arm, control electronic cutting
Closing lock includes: to work as to detect that the voltage-phase of differential gap is zero, and detect the voltage of the second phase of contact net supply arm
When phase zero crossing, controls the electronic switch and close a floodgate.
Further, described to detect that the voltage-phase of differential gap is zero, and detect that second phase of contact net supplies
When the voltage-phase zero crossing of electric arm, controlling the electronic switch and closing a floodgate includes: to work as the voltage-phase for detecting the differential gap
It is zero, and after the preset time of interval, when detecting the voltage-phase zero crossing of the second phase of contact net supply arm, described in control
Electronic switch closes a floodgate.
Ground automatic neutral-section passing device provided in an embodiment of the present invention is combined using mechanical switch and electronic switch, is had concurrently
The advantage that the electrical transient performance of electronic switch is good and mechanical switch is at low cost.Mechanical switch is responsible for train and enters point behind center
Lock, it is strong using the mechanical switch arc extinguishing ability of intelligent phase selection vacuum circuit breaker, shutdown can be met and required, and overvoltage is truncated not
Seriously.Electronic switch is responsible for the combined floodgate after mechanical switch separating brake, detects the contact net according to the voltage detection unit
It closes a floodgate when the voltage-phase zero crossing of two-phase supply arm, inhibits inrush phenomenon and overvoltage.The embodiment of the present invention solves existing
Purely mechanic low switching life in technology safeguards frequent and pure electronic switch problem at high cost, by mechanical switch and electronic cutting
Combined use is closed, the performance advantage and cost advantage of two kinds of phase-change switches are taken into account, plays electronic switch control precision height, it is electrical temporary
State property can good advantage, while, take up little area the advantages of at low cost using mechanical switch.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of ground automatic neutral-section passing device in the prior art；
Fig. 2 is a kind of structural schematic diagram of ground automatic neutral-section passing device provided in an embodiment of the present invention；
Fig. 3 is a kind of schematic diagram of ground automatic neutral-section passing device provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram of another ground automatic neutral-section passing device provided in an embodiment of the present invention；
Fig. 5 is a kind of flow diagram of ground automatic passing over of neutral section method provided in an embodiment of the present invention
Fig. 6 is a kind of timing diagram of ground automatic passing over of neutral section method provided in an embodiment of the present invention.
Description of symbols
211,212,213-- train recognition unit, 24,241,242-- current detecting unit
25,251,252-- voltage detection units 41,42-- access breaker
51,52,53-- disconnecting switch
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
When being mechanical switch for the phase-change switch in traditional ground automatic neutral-section passing device, as shown in Figure 1, K1 is cut-off
Rapidly, without phenomenon of shutting off, also without over-voltage.But when K2 closes a floodgate, it is possible to create the over-voltage more than normal range (NR) triggers train mistake
Trip protection is pressed, is shoved it is also possible that obtaining train overcurrent protection movement.Wherein, over-voltage and shove mainly with K1 disconnect after differential gap
Remaining residual voltage is related, more empty than closure by generating when the phase power supply of K2 closure supply arm B and the residual voltage opposite in phase of differential gap
It loads with the much bigger overvoltage of lotus and shoves.
It is electronic switch for the phase-change switch in traditional ground automatic neutral-section passing device, electronic switch controllability is strong,
Response is fast, accurately controls opening/closing angle, inhibits overvoltage and problem of shoving, but cost wants high compared with mechanical switch.
Ground automatic neutral-section passing device provided in an embodiment of the present invention combines electronic switch and mechanical switch, considers column
When vehicle enters differential gap commutation, in differential gap, train drives into the mechanical switch of side installation vacuum circuit breaker, the truncation of separating brake process
Overvoltage is not serious, and vacuum circuit breaker arc extinguishing ability is strong, and turn-off speed fully meets requirement.Due to separating brake in commutation process
Residual voltage afterwards does not disappear, if the switching-on phase selection of another phase-change switch is improper, easily cause combined floodgate supply arm phase and
Residual voltage opposite in phase will generate the transient state over-voltage and overcurrent for being far longer than closure airport logistic park at this time, may bring to mobile unit
Damage.At this moment need a kind of phase-change switch control precision high, fast response time judges suitable combined floodgate phase in logic control element
Position and phase-change switch can act at once after issuing action command, therefore only in differential gap, train drives into out side installation electronic cutting
Pass is just able to satisfy this demand.Electronic switch and the mechanical switch provided in an embodiment of the present invention of being combined with is described more fully below
Ground automatic neutral-section passing device.
Fig. 2 is a kind of structural schematic diagram of ground automatic neutral-section passing device provided in an embodiment of the present invention.As shown in Fig. 2,
Described device includes: train recognition unit 21, for identification the position of the driving direction of train and arrival；Mechanical switch 22,
For being differential gap power supply by contact net the first phase supply arm when its closure, setting is powered in first phase of contact net
Arm and differential gap train drive between side；Electronic switch 23, for being described by contact net the second phase supply arm when its closure
Differential gap power supply, setting are driven out between side in contact net the second phase supply arm and differential gap train；Current detecting unit
24, for detecting the electric current of the first phase of contact net supply arm；Voltage detection unit 25, for detecting the contact net second
The voltage of phase supply arm；Logic control element 26, for when the train recognition unit recognize train reach first position when,
Control the mechanical switch closure；The second position, and the electric current are reached when the train recognition unit recognizes the train
When detection unit detects the current phase zero crossing of the first phase of contact net supply arm, controls the mechanical switch and disconnect；
When the voltage detection unit detects the voltage-phase zero crossing of the second phase of contact net supply arm, the electronics is controlled
Switch closes a floodgate；When the train recognition unit, which recognizes train, reaches the third place, the electronic switch separating brake is controlled,
In, the first position is located at the first phase of contact net supply arm affiliated area, and the second position is located at the differential gap
Affiliated area, the third place are located at the second phase of contact net supply arm affiliated area.
Wherein, the mechanical switch is intelligent phase selection vacuum circuit breaker.The electronic switch is parallel thyristors of playing a reversed role.
JY1 and JY2 is neutral section insulator.
Ground automatic neutral-section passing device provided in an embodiment of the present invention is combined using mechanical switch and electronic switch, is had concurrently
The advantage that the electrical transient performance of electronic switch is good and mechanical switch is at low cost.Mechanical switch is responsible for train and enters point behind center
Lock, it is strong using the mechanical switch arc extinguishing ability of intelligent phase selection vacuum circuit breaker, shutdown can be met and required, and overvoltage is truncated not
Seriously.Electronic switch is responsible for the combined floodgate after mechanical switch separating brake, detects the contact net according to the voltage detection unit
It closes a floodgate when the voltage-phase zero crossing of two-phase supply arm, inhibits inrush phenomenon and overvoltage.In addition, electronic switch response is fast.This
Commutation of the ground automatic neutral-section passing device that inventive embodiments provide compared to the ground automatic neutral-section passing device of purely mechanic switch
Time shortens, and neutral section length can be reduced, and train speed loss is small, improves the operational efficiency of train.
As shown in figure 3, providing the schematic diagram of the ground automatic neutral-section passing device.Wherein, respectively in the first phase of contact net
Supply arm affiliated area, differential gap affiliated area and contact net the second phase supply arm affiliated area are arranged three trains and identify list
Member 211,212 and 213 is respectively used to identification train and drives into contact net the first phase supply arm affiliated area, identifies in train entrance
Property area affiliated area, and identification train is driven out to contact net the second phase supply arm affiliated area.Intelligent phase selection vacuum circuit breaker
The setting of mechanical switch 22 is driven between side in contact net the first phase supply arm and differential gap train, is used for when its closure,
It is differential gap power supply by contact net the first phase supply arm.The setting of electronic switch 23 of thyristor is powered in second phase of contact net
Arm and differential gap train are driven out between side, for being differential gap power supply by contact net the second phase supply arm when its closure.
In addition, current detecting unit 24 is used to detect the electric current of the first phase of contact net supply arm, as shown in figure 3, current detecting list
Member 24 is connected with the mechanical switch.The voltage detection unit 25 is used to detect the electricity of the second phase of contact net supply arm
Pressure.Logic control element 26 is used for that is, described contact when the train recognition unit 211 recognizes train and reaches first position
When net the first phase supply arm affiliated area, controls the mechanical switch 22 and be closed；When the train recognition unit 212 recognizes institute
It states train and reaches the second position, i.e., the described differential gap affiliated area, and the current detecting unit 24 detects the contact net
When the current phase zero crossing of the first phase supply arm, controls the mechanical switch 22 and disconnect；When the voltage detection unit 25 is examined
When measuring the voltage-phase zero crossing of the second phase of contact net supply arm, controls the electronic switch 23 and close a floodgate, to realize
Overvoltage and rush of current to locomotive is minimum；When the train recognition unit, which recognizes train, reaches the third place, i.e. institute
When stating contact net the second phase supply arm affiliated area, 23 separating brake of electronic switch is controlled.
In addition, voltage of the voltage detection unit 25 in addition to can detecte the second phase of contact net supply arm, is also used
In the voltage for detecting the differential gap, as shown in figure 4, the voltage detection unit 251 and 252 is separately positioned on the contact net
Second phase supply arm and the differential gap.The logic control element 26 is also used to after controlling mechanical switch disconnection,
Since mechanical switch control precision is low, shutdown effect may be not obvious, and there are cut-off overvoltages, therefore by the voltage detecting
Whether the voltage-phase that unit detects the differential gap is zero, to judge whether mechanical switch complete switches off, if zero, then it represents that
Mechanical switch complete switches off, then when the voltage detection unit detects the voltage-phase of the second phase of contact net supply arm
When zero crossing, controls the electronic switch and close a floodgate.
Preferably, in order to further ensure mechanical switch complete switches off, need be in the voltage-phase for detecting differential gap
After zero, then of short duration delay a period of time controls electronic switch and closes a floodgate, the specifically described logic control element is also used to when described
Voltage detection unit detects that the voltage-phase of the differential gap is zero, and after the preset time of interval, when the voltage detecting list
When member detects the voltage-phase zero crossing of the second phase of contact net supply arm, controls the electronic switch and close a floodgate.It is described pre-
If the time can as the case may be depending on, for example, 10ms.
In addition, optional, the current detecting unit can detecte the electric current of the first phase of contact net supply arm, may be used also
To detect the electric current of the second phase of contact net supply arm, with the position for detecting train pantograph.As shown in figure 4, the electricity
Stream detection unit 241 and 242 is separately positioned on contact net the first phase supply arm and the contact net the second phase supply arm.
In addition, for the safety of the ground automatic neutral-section passing device, as shown in figure 4, described device further includes that access is disconnected
Road device 41 and 42 is connected, in order to machinery for cutting off circuit when line short respectively at mechanical switch and electronic switch
When switch or electronic switch short trouble, trip protection.For the ease of maintenance personal's maintenance, described device further includes disconnecting switch
51,52 and 53, for the electrical isolation under circuit inspecting state, it is separately positioned on the first phase of contact net supply arm, differential gap
With contact net the second phase supply arm.
The voltage detection unit mentioned in the embodiment of the present invention can be voltage transformer, and current detecting unit can be electricity
Current transformer.
Ground automatic neutral-section passing device provided in an embodiment of the present invention can play electronic switch control precision height, electrically
The good advantage of transient performance, and, take up little area the advantages of at low cost using mechanical switch, whole device is compared to purely mechanic switch
Ground automatic neutral-section passing device inhibit close a floodgate over-voltage, overcurrent impact capacity have tremendous increase, compared to pure electronic switch
Ground automatic neutral-section passing device escapable cost reduces equipment land occupation.
Fig. 5 is a kind of flow diagram of ground automatic passing over of neutral section method provided in an embodiment of the present invention.As shown in figure 5,
The method is applied to ground passing phase insulator device provided by the above embodiment, and described method includes following steps:
Step 501, when recognizing train arrival first position, control mechanical switch closure；
Step 502, the second position is reached when recognizing the train, and detect the electric current of contact net the first phase supply arm
When phase zero crossing, controls the mechanical switch and disconnect；
Step 503, when detecting the voltage-phase zero crossing of contact net the second phase supply arm, control electronic cutting is closed
Lock；
Step 504, when recognizing train arrival the third place, the electronic switch separating brake is controlled,
Wherein, the first position is located at the first phase of contact net supply arm affiliated area, and the second position is located at
The differential gap affiliated area, the third place are located at the second phase of contact net supply arm affiliated area.
By taking the working timing figure of the ground automatic neutral-section passing device shown in fig. 6 as an example, t1 moment train recognition unit
211 detection trains reach, and control mechanical switch 22 is closed, and t2 moment train reaches neutral section insulator JY1, and t3 moment train reaches
At the train recognition unit 212 of differential gap, the t4 moment, when detecting the voltage-phase zero crossing of contact net the second phase supply arm,
Electronic switch 23 closes a floodgate, and t5 moment train passes through neutral section insulator JY2, and t6 moment train recognition unit 213 identifies that train is driven out to
Differential gap, controls the electronic switch separating brake, and entire ground automatic passing over of neutral section process is completed.
Timing diagram as shown in connection with fig. 6 reaches first shown in fig. 6 when recognizing train in embodiments of the present invention
When setting, i.e., the first phase of contact net supply arm affiliated area when, control mechanical switch closure, differential gap is by the contact net the
The power supply of one phase supply arm, waits train to enter differential gap.After train, which continues traveling, enters differential gap, contact net first is detected
When the current phase zero crossing of phase supply arm, controls the mechanical switch and disconnect.Since mechanical switch control precision is low, shutdown effect
Fruit may be not obvious, and there are cut-off overvoltages, but not serious.It, can in order to further ensure mechanical switch complete switches off
Whether the voltage-phase for detecting differential gap is zero, shows that mechanical switch complete switches off if zero, then detects the contact net
When the voltage-phase zero crossing of the second phase supply arm, controls the electronic switch and close a floodgate.
Preferably, it can be spaced preset time, with further protecting after detecting that the voltage-phase of the differential gap is zero
Card mechanical switch complete switches off, and when then detecting the voltage-phase zero crossing of the second phase of contact net supply arm, controls institute
State electronic switch combined floodgate.
Ground automatic passing over of neutral section method, mechanical switch and electronic switch are combined described in the embodiment of the present invention
It is high to play electronic switch control precision, the good advantage of electrical transient performance, and it is at low cost using mechanical switch, take up little area it is excellent
Point, short compared to the purely mechanic switch ground automatic passing over of neutral section commutation time, neutral section length can shorten, when train commutation powers off
Between it is short, speed loss is small, train operation efficiency improve, compared to pure electronic switch ground automatic passing over of neutral section escapable cost, subtract
Few equipment land occupation.In addition, commutation process is automatically performed by ground automatic neutral-section passing device completely, driver's workload and behaviour are reduced
Make fatigue strength, avoid driver's maloperation that train electrification is caused to rush across split-phase, burns vehicle-mounted and ground installation accident and occur.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (10)
1. a kind of ground automatic neutral-section passing device, which is characterized in that described device includes:
Train recognition unit, for identification position of the driving direction of train and arrival；
Mechanical switch, for being differential gap power supply by contact net the first phase supply arm, being arranged in the contact when its closure
Net the first phase supply arm and differential gap train drive between side；
Electronic switch, for being differential gap power supply by contact net the second phase supply arm, being arranged described when its closure
Contact net the second phase supply arm and differential gap train are driven out between side；
Current detecting unit, for detecting the electric current of the first phase of contact net supply arm；
Voltage detection unit, for detecting the voltage of the second phase of contact net supply arm；
Logic control element, for controlling the machinery when the train recognition unit recognizes train and reaches first position
It closes the switch；The second position is reached when the train recognition unit recognizes the train, and the current detecting unit detects
To the first phase of contact net supply arm current phase zero crossing when, control the mechanical switch and disconnect；When the voltage is examined
When survey unit detects the voltage-phase zero crossing of the second phase of contact net supply arm, controls the electronic switch and close a floodgate；When
When the train recognition unit recognizes train arrival the third place, the electronic switch separating brake is controlled, wherein described first
Setting in the first phase of contact net supply arm affiliated area, the second position is located at the differential gap affiliated area, described
The third place is located at the second phase of contact net supply arm affiliated area.
2. the apparatus according to claim 1, which is characterized in that the voltage detection unit is also used to detect the differential gap
Voltage；The logic control element is also used to disconnect when the control mechanical switch, and the voltage detection unit detects
After the voltage-phase of the differential gap is zero, when the voltage detection unit detects the electricity of the second phase of contact net supply arm
When pressing phase zero crossing, controls the electronic switch and close a floodgate.
3. the apparatus of claim 2, which is characterized in that the logic control element is also used to when the voltage detecting
Unit detects that the voltage-phase of the differential gap is zero, and after the preset time of interval, when the voltage detection unit detects
When the voltage-phase zero crossing of the second phase of contact net supply arm, controls the electronic switch and close a floodgate.
4. the apparatus according to claim 1, which is characterized in that the mechanical switch is intelligent phase selection vacuum circuit breaker.
5. the apparatus according to claim 1, which is characterized in that the electronic switch is parallel thyristors of playing a reversed role.
6. the apparatus according to claim 1, which is characterized in that described device further include:
Breaker is accessed, for cutting off circuit when line short.
7. the apparatus according to claim 1, which is characterized in that described device further include:
Disconnecting switch, for the electrical isolation under circuit inspecting state.
8. a kind of ground automatic passing over of neutral section method, which is characterized in that the method is applied to any one of the claims 1-7 institute
The ground automatic neutral-section passing device stated, which comprises
When recognizing train arrival first position, control mechanical switch closure；
The second position is reached when recognizing the train, and detects the current phase zero crossing of contact net the first phase supply arm
When, it controls the mechanical switch and disconnects；
When detecting the voltage-phase zero crossing of contact net the second phase supply arm, control electronic switch closes a floodgate；
When recognizing train arrival the third place, the electronic switch separating brake is controlled,
Wherein, the first position is located at the first phase of contact net supply arm affiliated area, and the second position is located at described
Differential gap affiliated area, the third place are located at the second phase of contact net supply arm affiliated area.
9. the method according to claim 1, wherein described when the voltage for detecting contact net the second phase supply arm
When phase zero crossing, control electronic switch combined floodgate includes:
When the voltage-phase for detecting differential gap is zero, and detect the voltage-phase zero passage of the second phase of contact net supply arm
When point, controls the electronic switch and close a floodgate.
10. according to the method described in claim 9, it is characterized in that, described when detecting that the voltage-phase of differential gap is zero, and
When detecting the voltage-phase zero crossing of the second phase of contact net supply arm, controlling the electronic switch combined floodgate includes:
When the voltage-phase for detecting the differential gap is zero, and after being spaced preset time, second phase of contact net is detected
When the voltage-phase zero crossing of supply arm, controls the electronic switch and close a floodgate.
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| CN201910355106.6A CN110171325A (en) | 2019-04-29 | 2019-04-29 | Ground automatic neutral-section passing device and method |
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| CN201910355106.6A CN110171325A (en) | 2019-04-29 | 2019-04-29 | Ground automatic neutral-section passing device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112406966A (en) * | 2020-11-24 | 2021-02-26 | 广州市扬新技术研究有限责任公司 | Method for positioning running position of single locomotive in interval |
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