CN109733252A - Ground automatic passing over of neutral section circuit and its control method, control device and control system - Google Patents
Ground automatic passing over of neutral section circuit and its control method, control device and control system Download PDFInfo
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- CN109733252A CN109733252A CN201910012451.XA CN201910012451A CN109733252A CN 109733252 A CN109733252 A CN 109733252A CN 201910012451 A CN201910012451 A CN 201910012451A CN 109733252 A CN109733252 A CN 109733252A
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Abstract
The present invention provides a kind of ground automatic passing over of neutral section circuit and its control method, control device and control system.First transformer high-voltage winding of the ground automatic passing over of neutral section circuit is connect with the first supply arm；Ac/dc current transformer first end is connect with the low pressure winding of the first transformer；Current sensor is connect with ac/dc current transformer first end and the first transformer low voltage winding respectively；Direct current/alternating current transformer second end is connect with ac/dc current transformer second end；Voltage sensor both ends are connect with direct current/alternating current transformer second end and ac/dc current transformer second end；Second transformer low voltage winding is connect with direct current/alternating current transformer first end, and the second transformer high-voltage winding is connect with differential gap supply arm；Ac/dc current transformer and direct current/alternating current transformer are the H bridge including 4 switching devices, can enable train quickly, smoothly through phase-separating section.
Description
Technical field
The present invention relates to automatic passing over of neutral section fields, and in particular, to a kind of ground automatic passing over of neutral section circuit and its controlling party
Method, control device and control system.
Background technique
The primary side of the Traction Substation of Electric Railway in China is generally three-phase 110kV or 220kV, to balance three-phase electricity
The bearing power of pressure, China's electrification railway contact net is using single-phase 25kV segmentation commutation power supply, adjacent different voltages phase
Power supply section between there are the phase-separating sections of a Duan Wu electricity.
Train need to carry out acting on a series of vehicles before driving into phase-separating section according to the position sensor signal that dress is buried on ground:
Traction power is reduced to 0, block four quadrant convertor, the vacuum circuit breaker on cutting train, traction invertor and is switched to micro- electricity system
Middle pressure keeps operating condition etc..There are two above-mentioned movement purposes: 1. traction powers, which are reduced to 0, block four quadrant convertor, can ensure that train
Trailer system does not take stream from contact net, and tractive transformer primary current is 0 at this time, may insure train 10 kV Vacuum Circuit-breaker in this way
Without impact when disconnected；Trailer system middle dc voltage can be maintained constant 2. traction invertor is switched to micro- electricity operating condition, assisted
System normally takes electricity unaffected from intermediate DC link, so that it is guaranteed that auxiliary system does not power off when train crosses phase-separating section.
It is fundamental requirement that train crosses phase-separating section that safety, steady, auxiliary system, which do not power off,.In recent years, with high-speed railway
Flourish, many ground automatic passing over of neutral section schemes are put forward one after another.It is limited to the limitation of power semiconductor, is proposed
Ground automatic passing over of neutral section scheme majority require tens multi-level semiconductor devices or module running of pumps in series parallel connection.Further, since
Two sections of front and back supply arm phase is inconsistent, and most ground automatic neutral-section passing devices will lead to train traction system mistake when acting
Electric current or overvoltage impact.Therefore above-mentioned apparatus is mostly with high costs, reliability is low, and do not have railway territory application substantially can
Row, not can guarantee train quickly, smoothly through phase-separating section.
Summary of the invention
The main purpose of the embodiment of the present invention is to provide a kind of ground automatic passing over of neutral section circuit and its control method, control
Device and control system, with enable train quickly, smoothly through phase-separating section；And the configuration of the present invention is simple, at low cost, reliability
Height has the feasibility of railway territory application.
To achieve the goals above, the embodiment of the present invention provides a kind of ground automatic passing over of neutral section circuit, supplies respectively with first
Electric arm is connected with differential gap supply arm, comprising: the first transformer, current sensor, ac/dc current transformer, voltage sensor,
Direct current/alternating current transformer and the second transformer；
The high-voltage winding of first transformer is connect with the first supply arm, carries out voltage change for the voltage to the first supply arm
Than obtaining the first exchange side voltage；
The first end of ac/dc current transformer is connect with the low pressure winding of the first transformer, for the first exchange side is electric
Pressure is converted to DC voltage；
Current sensor is connect with the low pressure winding of the first end of ac/dc current transformer and the first transformer respectively, is used
In measurement ac-side current；
The second end of direct current/alternating current transformer is connect with the second end of ac/dc current transformer, is used for DC voltage
Be converted to the second exchange side voltage；
Second end of the both ends of voltage sensor with the second end of direct current/alternating current transformer and ac/dc current transformer
Connection, for measuring DC voltage；
The low pressure winding of second transformer and the first end of direct current/alternating current transformer connect, the high voltage winding of the second transformer
Group is connect with differential gap supply arm, for carrying out voltage change ratio to the second exchange side voltage, obtains the voltage of differential gap supply arm；
Ac/dc current transformer and direct current/alternating current transformer are the H bridge including 4 switching devices.
The embodiment of the present invention also provides a kind of control method of ground automatic passing over of neutral section circuit, comprising:
Obtain ac-side current；
Judge whether ac-side current is less than or equal to the first predetermined current threshold；
When ac-side current is less than or equal to the first predetermined current threshold, direct current/alternating current transformer is controlled with open loop control
The mode of system adjusts the voltage of differential gap supply arm to identical as the voltage of the first supply arm；
When ac-side current be greater than the first predetermined current threshold when, control direct current/alternating current transformer within a preset time with
The mode of opened loop control enables the voltage of differential gap supply arm be adjusted by the voltage of the first supply arm to the voltage with the second supply arm
It is identical；Preset time is the length of non-Electric region and the quotient of train speed.
The embodiment of the present invention also provides a kind of control device of ground automatic passing over of neutral section circuit, comprising:
Ac-side current acquiring unit, for obtaining ac-side current；
First judging unit, for judging whether ac-side current is less than or equal to the first predetermined current threshold；
First control unit, for controlling direct current/alternating current transformer in a manner of opened loop control for differential gap supply arm
Voltage is adjusted to identical as the voltage of the first supply arm；
Second control unit, for controlling during direct current/alternating current transformer enables in a manner of opened loop control within a preset time
The voltage of property area supply arm is adjusted by the voltage of the first supply arm to identical as the voltage of the second supply arm.
The embodiment of the present invention also provides a kind of control system of ground automatic passing over of neutral section circuit, including；
Ground as described above automatic passing over of neutral section circuit；
The control device of ground as described above automatic passing over of neutral section circuit；
The control device of ground automatic passing over of neutral section circuit respectively in the automatic passing over of neutral section circuit of ground current sensor, hand over
Stream/DC transformer, voltage sensor, direct current/alternating current transformer, over-pressure safety device, the first vacuum circuit breaker and second are true
Empty breaker connection.
The ground automatic passing over of neutral section circuit and its control method, control device and control system of the embodiment of the present invention can enable
Train quickly, smoothly through phase-separating section；And the configuration of the present invention is simple, at low cost, high reliablity, have railway territory application
Feasibility.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, embodiment will be described below
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the schematic diagram of automatic passing over of neutral section circuit in ground in first embodiment of the invention；
Fig. 2 is the schematic diagram of automatic passing over of neutral section circuit in ground in second embodiment of the invention；
Fig. 3 is the schematic diagram of automatic passing over of neutral section circuit in ground in third embodiment of the invention；
Fig. 4 is the schematic diagram of automatic passing over of neutral section circuit in ground in fourth embodiment of the invention；
Fig. 5 is the flow chart of the control method of ground automatic passing over of neutral section circuit in the embodiment of the present invention；
Fig. 6 is the structural block diagram of the control device of ground automatic passing over of neutral section circuit in first embodiment of the invention；
Fig. 7 is the structural block diagram of the control device of ground automatic passing over of neutral section circuit in second embodiment of the invention；
Fig. 8 is the schematic diagram of the control system of ground automatic passing over of neutral section circuit in the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Those skilled in the art will understand that embodiments of the present invention can be implemented as a kind of system, device, equipment,
Method or computer program product.Therefore, the present disclosure may be embodied in the following forms, it may be assumed that complete hardware, complete soft
The form that part (including firmware, resident software, microcode etc.) or hardware and software combine.
It is with high costs in view of currently available technology, reliability is low, do not have substantially railway territory application feasibility, can not
Guarantee train quickly, smoothly through phase-separating section, the embodiment of the present invention provides a kind of ground automatic passing over of neutral section circuit, structure letter
It is single, at low cost, high reliablity, have railway territory application feasibility, can enable train quickly, smoothly through phase-separating section.
Below in conjunction with attached drawing, the present invention is described in detail.
Fig. 1 is the schematic diagram of automatic passing over of neutral section circuit in ground in first embodiment of the invention.As shown in Figure 1, ground is automatic
Phase splitter is crossed to connect with the first supply arm 1 and differential gap supply arm 2 respectively, comprising: the first transformer 4, current sensor 7,
Ac/dc current transformer 6, voltage sensor 9, direct current/alternating current transformer 14 and the second transformer 5；It further include the second confession in Fig. 1
Electric arm 3.Train is transitioned into the second supply arm 3 from the first supply arm 1 by differential gap supply arm 2.
The high-voltage winding (H of the first transformer 4 in Fig. 1) of first transformer 4 is connect with the first supply arm 1, for the
The voltage of one supply arm 1 carries out voltage change ratio, obtains the first exchange side voltage；
The low pressure winding (L of the first transformer 4 in Fig. 1) of the first end of ac/dc current transformer 6 and the first transformer 4
Connection, for the first exchange side voltage to be converted to DC voltage；Wherein, ac/dc current transformer 6 uses double-closed-loop control
Strategy, by obtaining the ac-side current that current sensor 7 measures and the DC voltage that voltage sensor 9 measures, control is handed over
The power factor for flowing side is 1, and control DC voltage is constant.
Current sensor 7 is connect with the low pressure winding of the first end of ac/dc current transformer 6 and the first transformer 4 respectively,
For measuring ac-side current；
The second end of direct current/alternating current transformer 14 is connect with the second end of ac/dc current transformer 6, is used for DC side
Voltage is converted to the second exchange side voltage；Wherein, direct current/alternating current transformer 14 uses opened loop control.
The both ends of voltage sensor 9 with the second end of direct current/alternating current transformer 14 and ac/dc current transformer 6
Two ends connection, for measuring DC voltage；As shown in Figure 1, voltage sensor 9 and direct current/alternating current transformer 14 and exchange/straight
It is in parallel to flow current transformer 6.
The first end of low pressure winding (L of the second transformer 5 in Fig. 1) and direct current/alternating current transformer 14 of second transformer 5
Connection, the high-voltage winding (H of the second transformer 5 in Fig. 1) of the second transformer are connect with differential gap supply arm 2, for second
It exchanges side voltage and carries out voltage change ratio, obtain the voltage of differential gap supply arm 2；
Ac/dc current transformer 6 and direct current/alternating current transformer 14 be the H bridge including 4 switching devices (in Fig. 1 not
Show).
Wherein, the voltage of the high-voltage winding of the first transformer 4 and the second transformer 5 is 25kV, the first transformer 4 and
The voltage of the low pressure winding of two transformers 5 and the four quadrant convertor on train to exchange side voltage suitable.
Fig. 2 is the schematic diagram of automatic passing over of neutral section circuit in ground in second embodiment of the invention.As shown in Fig. 2, ground is automatic
Cross phase splitter further include: over-pressure safety device 8；Over-pressure safety device is in parallel with voltage sensor 9.
Fig. 3 is the schematic diagram of automatic passing over of neutral section circuit in ground in third embodiment of the invention.As shown in figure 3, ground is automatic
Cross phase splitter further include: the first vacuum circuit breaker 10 and the second vacuum circuit breaker 11；
One end of first vacuum circuit breaker 10 connects the first supply arm 1, the other end connection of the first vacuum circuit breaker 10 the
The high-voltage winding of one transformer 4；
One end of second vacuum circuit breaker 11 connects differential gap supply arm 2, the other end connection of the first vacuum circuit breaker 11
The high-voltage winding of second transformer 5.
Fig. 4 is the schematic diagram of automatic passing over of neutral section circuit in ground in fourth embodiment of the invention.As shown in figure 4, ground is automatic
Cross phase splitter further include: first fuse 12 and second fuse 13；
One end of first fuse 12 connects the first supply arm 1, and it is disconnected that the other end of first fuse 12 connects the first vacuum
Road device 10；
One end of second fuse 13 connects differential gap supply arm 2, and the other end of second fuse 13 connects the second vacuum
Breaker 11.
Based on the same inventive concept, the embodiment of the invention also provides a kind of controlling parties of ground automatic passing over of neutral section circuit
Method.Fig. 5 is the flow chart of the control method of ground automatic passing over of neutral section circuit in the embodiment of the present invention.As shown in figure 5, ground is automatic
The control method for crossing phase splitter includes:
S101: ac-side current is obtained.
S102: judge whether ac-side current is less than or equal to the first predetermined current threshold.
S103: when ac-side current is less than or equal to the first predetermined current threshold, direct current/alternating current transformer is controlled to open
The mode of ring control adjusts the voltage of differential gap supply arm to identical as the voltage of the first supply arm.
S104: when ac-side current is greater than the first predetermined current threshold, direct current/alternating current transformer is controlled in preset time
The interior voltage that differential gap supply arm is enabled in a manner of opened loop control by the voltage of the first supply arm adjust to the second supply arm
Voltage is identical.
Wherein, preset time is the length of non-Electric region and the quotient of train speed.
Specifically, it is located at the first supply arm 1, when not driving into differential gap supply arm 2, direct current/alternating current transformer 14 in train
Second exchange side voltage of output is identical as the alternating voltage of the first supply arm 1 after by 5 no-load voltage ratio of the second transformer.When
When train drives into differential gap supply arm 2 from the first supply arm 1, current sensor 7 detects obtained ac-side current and increases, at this time
The period of the switching device of direct current/alternating current transformer 14, output the second exchange side voltage are controlled, which passes through
It is identical as the alternating voltage of the second supply arm 3 after second transformer, 5 no-load voltage ratio；When train drives into second from differential gap supply arm 2
When supply arm 3, current sensor 7 detects obtained ac-side current and reduces, and controls the switch of direct current/alternating current transformer 14 at this time
In the period of device, output the second exchange side voltage, the second exchange side voltage after 5 no-load voltage ratio of the second transformer with first by supplying
The alternating voltage of electric arm 1 is identical.
The executing subject of the control method of automatic passing over of neutral section circuit in ground shown in fig. 5 can be computer.As shown in Figure 5
Process it is found that the control method of the ground automatic passing over of neutral section circuit of the embodiment of the present invention first obtains ac-side current, then judges
Whether ac-side current is less than or equal to the first predetermined current threshold；When ac-side current is less than or equal to the first predetermined current threshold
When value, the voltage of differential gap supply arm is adjusted to first in a manner of opened loop control and is powered by control direct current/alternating current transformer
The voltage of arm is identical；When ac-side current is greater than the first predetermined current threshold, direct current/alternating current transformer is controlled in preset time
The interior voltage that differential gap supply arm is enabled in a manner of opened loop control by the voltage of the first supply arm adjust to the second supply arm
Voltage is identical, have railway territory application feasibility, can enable train quickly, smoothly through phase-separating section.
In one embodiment, further includes:
Obtain DC voltage；
Judge whether DC voltage is greater than the first predetermined voltage threshold；
When DC voltage is greater than the first predetermined voltage threshold, it is closed over-pressure safety device.
In one embodiment, further includes:
Judge whether ac-side current is greater than the second predetermined current threshold；
Judge DC voltage whether less than the second predetermined voltage threshold；
When ac-side current is greater than the second predetermined current threshold or DC voltage less than the second predetermined voltage threshold,
Disconnect the first vacuum circuit breaker and the second vacuum circuit breaker.
To sum up, the control method of the ground automatic passing over of neutral section circuit of the embodiment of the present invention first obtains ac-side current, then sentences
Whether disconnected ac-side current is less than or equal to the first predetermined current threshold；When ac-side current is less than or equal to the first predetermined current
When threshold value, the voltage of differential gap supply arm is adjusted to first in a manner of opened loop control and is supplied by control direct current/alternating current transformer
The voltage of electric arm is identical；When ac-side current is greater than the first predetermined current threshold, direct current/alternating current transformer is controlled when default
In enabled in a manner of opened loop control the voltage of differential gap supply arm by the voltage of the first supply arm adjust to the second supply arm
Voltage it is identical, have railway territory application feasibility, can enable train quickly, smoothly through phase-separating section.
Based on the same inventive concept, the embodiment of the invention also provides a kind of control of ground automatic passing over of neutral section circuit dresses
It sets, since the principle that the device solves the problems, such as is similar to the control method of ground automatic passing over of neutral section circuit, the reality of the device
The implementation for the method for may refer to is applied, overlaps will not be repeated.
Fig. 6 is the structural block diagram of the control device of ground automatic passing over of neutral section circuit in first embodiment of the invention.Such as Fig. 6 institute
Show, the control device of ground automatic passing over of neutral section circuit includes:
Ac-side current acquiring unit, for obtaining ac-side current；
First judging unit, for judging whether ac-side current is less than or equal to the first predetermined current threshold；
First control unit, for controlling direct current/alternating current transformer in a manner of opened loop control for differential gap supply arm
Voltage is adjusted to identical as the voltage of the first supply arm；
Second control unit, for controlling during direct current/alternating current transformer enables in a manner of opened loop control within a preset time
The voltage of property area supply arm is adjusted by the voltage of the first supply arm to identical as the voltage of the second supply arm.
In a kind of wherein embodiment, further includes:
DC voltage acquiring unit, for obtaining DC voltage；
Second judgment unit, for judging whether DC voltage is greater than the first predetermined voltage threshold；
Over-pressure safety device closed cell, for being closed over-pressure safety device.
Fig. 7 is the structural block diagram of the control device of ground automatic passing over of neutral section circuit in second embodiment of the invention.Such as Fig. 7 institute
Show, the control device of ground automatic passing over of neutral section circuit further includes；
Third judging unit, for judging whether ac-side current is greater than the second predetermined current threshold；
4th judging unit, for judging DC voltage whether less than the second predetermined voltage threshold；
Switching units, for disconnecting the first vacuum circuit breaker and the second vacuum circuit breaker.
To sum up, the control device of the ground automatic passing over of neutral section circuit of the embodiment of the present invention first obtains ac-side current, then sentences
Whether disconnected ac-side current is less than or equal to the first predetermined current threshold；When ac-side current is less than or equal to the first predetermined current
When threshold value, the voltage of differential gap supply arm is adjusted to first in a manner of opened loop control and is supplied by control direct current/alternating current transformer
The voltage of electric arm is identical；When ac-side current is greater than the first predetermined current threshold, control control direct current/alternating current transformer is pre-
If enabling the voltage of differential gap supply arm be adjusted by the voltage of the first supply arm to second in the time in a manner of opened loop control to supply
The voltage of electric arm is identical, have railway territory application feasibility, can enable train quickly, smoothly through phase-separating section.
Based on the same inventive concept, the embodiment of the invention also provides a kind of control systems of ground automatic passing over of neutral section circuit
System, since the principle that the system solves the problems, such as is similar to the control method of ground automatic passing over of neutral section circuit, the reality of the system
The implementation for the method for may refer to is applied, overlaps will not be repeated.
Fig. 8 is the schematic diagram of the control system of ground automatic passing over of neutral section circuit in the embodiment of the present invention.As shown in figure 8, ground
The control system of face automatic passing over of neutral section circuit includes；
Ground as described above automatic passing over of neutral section circuit；
The control device of ground as described above automatic passing over of neutral section circuit；
The control device 15 of ground automatic passing over of neutral section circuit respectively with the current sensor in the automatic passing over of neutral section circuit of ground
7, ac/dc current transformer 6, voltage sensor 9, direct current/alternating current transformer 14, over-pressure safety device 8, the first vacuum circuit breaker
10 and second vacuum circuit breaker 11 connect.
The specific work process of the control system of the ground automatic passing over of neutral section circuit of the embodiment of the present invention is as follows:
1, train does not drive into ground location A, and the control device of ground automatic passing over of neutral section circuit controls the first vacuum circuit breaker
10 and second vacuum circuit breaker 11 be in closed state.If ac-side current is greater than the second predetermined current threshold or DC side
When voltage is less than the second predetermined voltage threshold, then the first vacuum circuit breaker 10 and the second vacuum circuit breaker 11 are disconnected.At this point, ground
The control device 15 of automatic passing over of neutral section circuit controls ac/dc current transformer 6 and works in double-closed-loop control operating condition, maintain exchange/
The power factor of the exchange side of DC transformer 6 is 1, maintains the DC-side Voltage Stabilization of ac/dc current transformer 6.Ground is certainly
The control device 15 for moving phase splitter also controls direct current/alternating current transformer 14 and works in opened loop control operating condition, exchanges side at this time
Current signal is less than or equal to predetermined current threshold, and the control device of ground automatic passing over of neutral section circuit passes through control DC/AC
The alternating voltage that current transformer 14 exports is to maintain the voltage of differential gap supply arm 2 consistent with the voltage of the first supply arm 1.
2, train drives into ground location A, and the pull-in control system on train receives the signal of ground location A, arranges at this time
The traction invertor on pull-in control system block train on vehicle, traction level is zeroed, without cutting off the vacuum on train
Breaker, it is not necessary that the traction invertor on train is switched to micro- electricity operating condition, without cutting off the four quadrant convertor on train,
Auxiliary system on train can work normally, unaffected.
3, train drives into ground location B, and the pull-in control system on train receives the signal of ground location B, arranges at this time
Pull-in control system on vehicle judges whether to have blocked traction invertor, then directly cuts off the vacuum circuit breaker on train as unfinished
Device.
4, train drives into differential gap supply arm 2, and current sensor 7 detects obtained ac-side current and increases, exchange side electricity
Stream is greater than the first predetermined current threshold, and the control device 15 of ground automatic passing over of neutral section circuit controls direct current/alternating current transformer at this time
14 output the second exchange side voltages, the second exchange side voltage is by the friendship after 5 no-load voltage ratio of the second transformer with the second supply arm 3
Galvanic electricity pressure is identical.In the process, neutrality is adjusted by controlling the gate cycle of 4 switching tubes of direct current/alternating current transformer 14
The voltage of area's supply arm 2 enables the voltage of differential gap supply arm 2 by identical as the voltage of the first supply arm 1, is gradually transitioned into and the
The voltage of two supply arms 3 is identical.
5, train drives into the second supply arm 3 from differential gap supply arm 2, and current sensor 7 detects obtained ac-side current
Reduce, ac-side current signal is less than or equal to predetermined current threshold, at this time the control device 15 of ground automatic passing over of neutral section circuit
Control direct current/alternating current transformer 14 output second exchange side voltage, this second exchange side voltage by 5 no-load voltage ratio of the second transformer it
It is identical as the alternating voltage of the first supply arm 1 afterwards.In the process, pass through 4 switching tubes of control direct current/alternating current transformer 14
Gate cycle adjustment differential gap supply arm 2 voltage, enable the voltage of differential gap supply arm 2 by the voltage with the second supply arm 3
It is identical, gradually it is adjusted to identical as the voltage of the first supply arm 1.
6, train drives into ground location C, and the pull-in control system on train receives the signal of ground location C, arranges at this time
Vehicle pull-in control system puts into traction invertor again, restores accidental conditions before phase-separating section.
To sum up, the control system of the ground automatic passing over of neutral section circuit of the embodiment of the present invention can enable train quickly, smoothly
Pass through phase-separating section；And the configuration of the present invention is simple, at low cost, high reliablity, have the feasibility of railway territory application.
Automatic passing over of neutral section circuit in ground provided in an embodiment of the present invention and its control method, control device and control system tool
Have it is following the utility model has the advantages that
1, the control device of ground automatic passing over of neutral section circuit of the invention can monitor that train drives into differential gap supply arm,
Control direct current/alternating current transformer, make the voltage of differential gap supply arm by identical as the voltage of the first supply arm, be gradually transitioned into
The voltage of second supply arm is identical.Train drove into before phase-separating section, leading on the pull-in control system block train on train
Draw inverter, traction level is zeroed, without cutting off the vacuum circuit breaker on train, without cutting the traction invertor on train
Be changed to micro- electricity operating condition, without cutting off the four quadrant convertor on train, the auxiliary system on train be can work normally, not by
It influences.
2, compared with prior art, cost of the invention is low, technology maturation, has the feasibility of railway territory application.The
Suitable, the work that exchanges side voltage of the voltage of the low pressure winding of one transformer and the second transformer and the four quadrant convertor on train
Industry application is mature.
3, compared with prior art, the present invention can reduce speed loss when train crosses phase-separating section.The prior art is in train
When driving into phase-separating section, the trailer system on train need to be adjusted to pressure in micro- electricity system and keep operating condition, and then regenerative braking is auxiliary to ensure
Auxiliary system does not power off, and will cause train speed loss.Present invention can ensure that differential gap supply arm meets train auxiliary system power
Demand keeps operating condition it is not necessary that the trailer system on train is switched to pressure in micro- electricity system.
4, compared with prior art, reliability when train crosses phase-separating section can be improved in the present invention.Traditionally, the traction on train
Control system need to cut off the vacuum circuit breaker on train after receiving the signal of ground location.In the first supply arm strides into
Property area's supply arm when, since the two voltage is inconsistent, will lead to pantograph generate electric arc of discharge phenomenon.The present invention drives into train
Make the differential gap supply arm consistent with the first supply arm voltage before the supply arm of differential gap, makes after train is driven out to differential gap supply arm
Property area's supply arm is consistent with the second supply arm voltage, therefore pantograph strides into differential gap supply arm in the first supply arm, Yi Jizhong
Property area supply arm will not generate electric arc of discharge phenomenon when striding into the second supply arm, improve reliability when train crosses split-phase.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
Describe in detail it is bright, it should be understood that the above is only a specific embodiment of the present invention, the guarantor being not intended to limit the present invention
Range is protected, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in this
Within the protection scope of invention.
Claims (11)
1. a kind of ground automatic passing over of neutral section circuit, connect with the first supply arm and differential gap supply arm respectively, which is characterized in that packet
It includes: the first transformer, current sensor, ac/dc current transformer, voltage sensor, direct current/alternating current transformer and the second transformation
Device；
The high-voltage winding of first transformer is connect with first supply arm, carries out electricity for the voltage to the first supply arm
Buckling ratio obtains the first exchange side voltage；
The first end of the ac/dc current transformer is connect with the low pressure winding of first transformer, is used for described first
Exchange side voltage is converted to DC voltage；
The current sensor low pressure winding with the first end of the ac/dc current transformer and first transformer respectively
Connection, for measuring ac-side current；
The second end of the direct current/alternating current transformer is connect with the second end of the ac/dc current transformer, and being used for will be described straight
Stream side voltage is converted to the second exchange side voltage；
The both ends of the voltage sensor with the second end of the direct current/alternating current transformer and the ac/dc current transformer
Second end connection, for measuring the DC voltage；
The low pressure winding of second transformer is connect with the first end of the direct current/alternating current transformer, second transformer
High-voltage winding connect with the differential gap supply arm, for carrying out voltage change ratio to the second exchange side voltage, obtain
The voltage of property area supply arm；
The ac/dc current transformer and the direct current/alternating current transformer are the H bridge including 4 switching devices.
2. automatic passing over of neutral section circuit in ground according to claim 1, which is characterized in that further include: over-pressure safety device；
The over-pressure safety device is in parallel with the voltage sensor.
3. automatic passing over of neutral section circuit in ground according to claim 1, which is characterized in that further include: the first vacuum circuit breaker
With the second vacuum circuit breaker；
One end of first vacuum circuit breaker connects first supply arm, the other end connection of first vacuum circuit breaker
The high-voltage winding of first transformer；
One end of second vacuum circuit breaker connects the differential gap supply arm, and the other end of first vacuum circuit breaker connects
Connect the high-voltage winding of second transformer.
4. automatic passing over of neutral section circuit in ground according to claim 3, which is characterized in that further include: first fuse and
Two fuses；
One end of the first fuse connects first supply arm, the other end connection described first of the first fuse
Vacuum circuit breaker；
One end of the second fuse connects the differential gap supply arm, the other end connection of the second fuse described the
Two vacuum circuit breakers.
5. the control method of ground automatic passing over of neutral section circuit, feature described in a kind of claim 1-4 any claim exist
In, comprising:
Obtain ac-side current；
Judge whether the ac-side current is less than or equal to the first predetermined current threshold；
When the ac-side current is less than or equal to the first predetermined current threshold, direct current/alternating current transformer is controlled with open loop control
The mode of system adjusts the voltage of differential gap supply arm to identical as the voltage of the first supply arm；
When the ac-side current be greater than the first predetermined current threshold when, control direct current/alternating current transformer within a preset time with
The mode of opened loop control enables the voltage of differential gap supply arm be adjusted by the voltage of the first supply arm to the voltage with the second supply arm
It is identical；The preset time is the length of non-Electric region and the quotient of train speed.
6. the control method of automatic passing over of neutral section circuit in ground according to claim 5, which is characterized in that further include:
Obtain DC voltage；
Judge whether the DC voltage is greater than the first predetermined voltage threshold；
When the DC voltage is greater than the first predetermined voltage threshold, it is closed over-pressure safety device.
7. the control method of automatic passing over of neutral section circuit in ground according to claim 6, which is characterized in that further include；
Judge whether the ac-side current is greater than the second predetermined current threshold；
Judge the DC voltage whether less than the second predetermined voltage threshold；
When the ac-side current is greater than the second predetermined current threshold or the DC voltage less than the second predetermined voltage threshold
When, disconnect the first vacuum circuit breaker and the second vacuum circuit breaker.
8. a kind of control device of ground automatic passing over of neutral section circuit characterized by comprising
Ac-side current acquiring unit, for obtaining ac-side current；
First judging unit, for judging whether the ac-side current is less than or equal to the first predetermined current threshold；
First control unit, for controlling direct current/alternating current transformer in a manner of opened loop control for the voltage of differential gap supply arm
It adjusts to identical as the voltage of the first supply arm；
Second control unit enables differential gap for controlling direct current/alternating current transformer in a manner of opened loop control within a preset time
The voltage of supply arm is adjusted by the voltage of the first supply arm to identical as the voltage of the second supply arm.
9. the control device of automatic passing over of neutral section circuit in ground according to claim 8, which is characterized in that further include:
DC voltage acquiring unit, for obtaining DC voltage；
Second judgment unit, for judging whether the DC voltage is greater than the first predetermined voltage threshold；
Over-pressure safety device closed cell, for being closed over-pressure safety device.
10. the control device of automatic passing over of neutral section circuit in ground according to claim 9, which is characterized in that further include；
Third judging unit, for judging whether the ac-side current is greater than the second predetermined current threshold；
4th judging unit, for judging the DC voltage whether less than the second predetermined voltage threshold；
Switching units, for disconnecting the first vacuum circuit breaker and the second vacuum circuit breaker.
11. a kind of control system of ground automatic passing over of neutral section circuit, which is characterized in that including；
Ground automatic passing over of neutral section circuit described in claim 1-4 any claim；
The control device of ground automatic passing over of neutral section circuit described in claim 8-10 any claim；
The control device of the ground automatic passing over of neutral section circuit respectively with the current sense in the ground automatic passing over of neutral section circuit
Device, ac/dc current transformer, voltage sensor, direct current/alternating current transformer, over-pressure safety device, the first vacuum circuit breaker and
The connection of two vacuum circuit breakers.
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