CN110001457B - Power train uninterrupted power section control system and method thereof - Google Patents
Power train uninterrupted power section control system and method thereof Download PDFInfo
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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
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Abstract
The invention discloses a continuous power-off sectioning control system and a continuous power-off sectioning control method for an electric train, and relates to the technical field of rail transit three-phase power supply systems. The control system comprises variable frequency and variable voltage equipment, a positioning unit, an electronic switch and a ground operation control system; the variable frequency and variable voltage device is used for providing three-phase power supply for the electric train; the positioning unit is arranged close to the segmented position of the power supply rail; the electronic switch is connected with the segment of the power supply rail in parallel, one end of the ground operation control system is connected with the variable frequency and transformation equipment and the positioning unit, and the other end of the ground operation control system is connected with the variable frequency and transformation equipment and the electronic switch. Therefore, the invention not only can realize 'no perception' and no power failure through the segmentation by cooperatively controlling the variable frequency and variable voltage equipment in the adjacent intervals to cooperatively supply power when the electric train passes through the segmentation power supply transition area, but also can improve the bearing and power supply efficiency of the electric train, greatly reduce the economic cost and create favorable conditions for artificial intelligent unmanned operation.
Description
Technical Field
The invention relates to the field of power supply of electric power of trains, in particular to a continuous power-off sectioning control system and method of an electric power train.
Background
The current electric train is powered by a power frequency single-phase alternating current power supply system, and electric equipment plays an important role on locomotives and motor cars of the electric train, wherein the most important is an alternating current-direct current-alternating current traction transmission system. The AC-DC-AC traction transmission system is formed by connecting a vehicle-mounted traction transformer, a traction converter and a traction motor in series, driving the traction motor and changing the rotation speed of the traction motor through frequency modulation and voltage regulation to achieve the purposes of driving and speed regulation operation of the electric train. Typically, in reality, electric train driving is performed by manual operation, and a few are automatic driving. There are some problems here. Firstly, an AC-DC-AC traction transmission system occupies absolute components in electric equipment on a trunk railway locomotive and a motor train, and has large weight and large volume; the weight is large, so that the axle weight is increased, the line cost is high, the volume is large, the valuable space of the locomotive and the motor car is occupied more, and the power density and the efficiency are reduced. Secondly, intelligent control and automatic driving (ATC) are necessary ways to replace manual driving, however, under the current electric train and power supply mode, the control equipment required by driving is installed on the electric train, the electric train moves even at high speed, and the command and organization of automatic driving (ATC) originate from a ground control center, the two cannot be directly carried out, wireless system connection is needed, and wireless system faults or malfunctions cause certain safety risks.
In view of the above technical problems, the inventor group proposes a new power supply mode of "omitting a vehicle-mounted electrical device and supplying power from the ground" which mainly includes two aspects: 1) The vehicle-mounted traction transformer and the traction converter are omitted, the weight of vehicle-mounted electrical equipment is reduced, the axle weight is reduced, the light weight of the electric train is realized, the bearing efficiency of the electric train is improved, the power density of a locomotive and a motor train is improved, and the vehicle-mounted traction transformer and the traction converter are suitable for higher-speed operation; 2) The ground power supply is used for directly realizing automatic control and unmanned operation of the electric train.
The technical problems to be solved at present are as follows: how to control the sectional power supply of the electric train to ensure that the electric train stably spans two adjacent sectional power supply rails so as to realize uninterrupted power supply over-section.
Disclosure of Invention
In view of the above, the invention aims to provide a segmented power supply control system and a method thereof for an electric train, which not only can enable the electric train to stably ride across between segmented power supply rails to realize continuous power failure and segment crossing, but also can control acceleration, deceleration and start and stop of the electric train.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
an electric train uninterrupted power section control system for a rail transit three-phase power supply system comprising a three-phase power supply rail segmented into sections 0, 1, 2, 3, … … n, wherein the control system comprises:
the variable frequency and voltage transformation equipment is specifically interval 0 variable frequency and voltage transformation equipment, interval 1 variable frequency and voltage transformation equipment, interval 2 variable frequency and voltage transformation equipment, interval 3 variable frequency and voltage transformation equipment and … … interval n variable frequency and voltage transformation equipment, and is correspondingly connected with interval 0, interval 1, interval 2, interval 3 and … … interval n respectively and is used for providing three-phase power supply for an electric train;
the positioning unit is arranged close to the segmented position of the power supply rail and used for acquiring position and speed information of the electric train and the relative position of an insulating region of the ith power supply rail;
the electronic switch is connected with the segment of the power supply rail in parallel and is used for conducting and disconnecting the segment of the power supply rail;
the ground operation control system is characterized in that the input end of the ground operation control system is respectively connected with the variable frequency and voltage transformation equipment and the positioning unit, and the output end of the ground operation control system is respectively connected with the variable frequency and voltage transformation equipment and the electronic switch and used for controlling the start and stop and acceleration and deceleration of the electric train.
Preferably, the sections between two adjacent sections of the sections 0, 1, 2, 3 and … … are the ith power supply rail insulation sections, and i is [0, (n-1) ]; the ith supply rail insulation region may be a first supply rail insulation region, a second supply rail insulation region, a third supply rail insulation region, a fourth supply rail insulation region, … …, or an nth supply rail insulation region.
Preferably, the positioning units include a section 0 positioning unit, a section 1 positioning unit, a section 2 positioning unit, a section 3 positioning unit, and a … … section n positioning unit, where the section 0 positioning unit, the section 1 positioning unit, the section 2 positioning unit, the section 3 positioning unit, and the … … section n positioning unit are respectively and sequentially installed near right ends of the section 0, the section 1, the section 2, the section 3, and the section … … section n.
Further preferably, the electronic switch comprises an electronic switch of a first power supply rail insulation region, an electronic switch of a second power supply rail insulation region, an electronic switch of a third power supply rail insulation region, an electronic switch of a fourth power supply rail insulation region, an electronic switch of a … … nth power supply rail insulation region, an electronic switch of a first power supply rail insulation region, an electronic switch of a second power supply rail insulation region, an electronic switch of a third power supply rail insulation region, an electronic switch of a fourth power supply rail insulation region, an electronic switch of … … nth power supply rail insulation region, and the electronic switch of the first power supply rail insulation region, the second power supply rail insulation region, the third power supply rail insulation region, the fourth power supply rail insulation region, … … nth power supply rail insulation region are respectively connected in parallel.
Preferably, the ground operation control system comprises:
the data acquisition module is used for acquiring the signals of the positioning unit and the current signals of the variable-frequency and variable-voltage equipment in real time;
the data processing module is connected with the data acquisition module and is used for realizing real-time signal conversion processing and logic algorithm;
the storage module is connected with the data processing module and used for storing information in real time;
and the communication module is connected with the data processing module and is used for sending control instructions to the variable-frequency and variable-voltage equipment and the electronic switch.
Further preferably, the data acquisition module is connected with the positioning unit and the variable frequency and variable voltage device respectively; the communication module is respectively connected with the electronic switch and the variable frequency and variable voltage device.
Preferably, the interval 0 positioning unit, the interval 1 positioning unit, the interval 2 positioning unit, the interval 3 positioning unit, and the … … interval n positioning unit are all position sensors respectively.
In order to solve the technical problem, a further technical scheme adopted by the invention is as follows:
the electric train uninterrupted power section control method of the electric train uninterrupted power section control system using the technical scheme comprises the following specific steps:
step one: acquiring position and speed information of an electric train and output current I of interval I variable-frequency and variable-voltage equipment in real time Ai Wherein i is [0, (n-1)]；
Step two: when the electric power train transits from the zone i to the zone (i+1), the ground operation control system judges whether the electric power train enters an ith power supply rail insulation zone according to the position and the speed of the electric power train obtained in real time; if yes, the ground operation control system controls the electronic switch of the insulation area of the ith power supply rail to trigger and conduct, and the interval i variable frequency and voltage transformation equipment and the interval (i+1) variable frequency and voltage transformation equipment jointly supply power to the insulation area of the ith power supply rail and the insulation area of the ith power supply railSection (i+1) provides three-phase power, when section I frequency converting transformation device output current I Ai When the voltage is reduced to zero, the electronic switch of the insulation area of the ith power supply rail is automatically disconnected and the interval (i+1) is independently supplied with power by the interval (i+1) variable frequency and voltage device; otherwise, returning to the step one.
Preferably, in the second step, the method for providing three-phase power to the ith power rail insulation area and the section (i+1) by the section i variable frequency transformer device and the section (i+1) variable frequency transformer device together includes:
the ground operation control system acquires the output voltage amplitude and phase information of the interval i variable frequency and voltage transformation equipment in real time and transmits the output voltage amplitude and phase information to the interval (i+1) variable frequency and voltage transformation equipment in real time;
the synchronous starting control interval (i+1) frequency conversion voltage transformation device supplies power to the insulation area of the ith power supply rail and the interval (i+1) to ensure that the amplitude and the phase of the output voltage of the interval I frequency conversion voltage transformation device are the same as those of the output voltage of the interval I frequency conversion voltage transformation device, and the output current of the interval I frequency conversion voltage transformation device is recorded as I at the moment A ；
Output current I of variable frequency and voltage transformation equipment in synchronous control interval (i+1) Ai+1 Gradually increase to I A And controlling the output current I of the interval I variable frequency and voltage transformation equipment Ai From current I A Reducing to zero;
output current I of variable frequency and variable voltage device in interval I Ai When the power supply voltage is reduced to zero, the electronic switch of the insulating region of the ith power supply rail is automatically disconnected, and meanwhile, a shutdown command is sent to the variable frequency and voltage transformation equipment of the interval i, so that the variable frequency and voltage transformation equipment of the interval i is shutdown.
Further preferably, the interval (i+1) frequency conversion transformation device outputs a current I Ai+1 Gradually increasing the speed and the output current I of the interval I variable frequency and voltage device Ai The decreasing speeds are equal.
Compared with the prior art, the invention has the beneficial effects that: according to the technical scheme, the electronic switch, the positioning unit and the ground operation control system are adopted to coordinate and control the variable frequency and voltage transformation equipment in the adjacent section to supply power in a matched mode when the electric train passes through the segmented power supply transition zone, so that the non-perception and non-outage segmentation can be realized, the economic cost is greatly reduced, and the beneficial condition is created for artificial intelligent unmanned operation.
Drawings
Fig. 1 is a schematic diagram of a frame structure of a power train uninterruptible power section control system according to an embodiment of the invention.
Fig. 2 is a schematic diagram of a specific structure of a power train uninterruptible power section control system according to an embodiment of the invention.
Fig. 3 is an enlarged view of fig. 2 at I.
Fig. 4 is a schematic diagram of an internal framework of the uninterruptible power section control system of the electric train according to the embodiment of the invention.
Fig. 5 is a basic flowchart of a method for controlling a power train uninterruptible power section according to the second embodiment of the invention.
Fig. 6 is a flowchart of a method for starting to control the electronic switch triggering opening of the insulation area of the ith power rail according to the second embodiment of the present invention.
Detailed Description
For a better understanding of the invention, the invention is further described below with reference to the drawings and to the detailed description.
Example 1
As shown in fig. 1 and 2, an electric train continuous power-off sectioning control system is used for a rail traffic three-phase power supply system, wherein the rail traffic three-phase power supply system comprises a three-phase power supply rail TR, and the power supply rail TR is sectioned into sections 0S 0 Interval 1S 1 Interval 2S 2 Interval 3S 3 … … section nS n The control system comprises variable frequency and variable voltage equipment A, a positioning unit P, an electronic switch K and a ground operation control system EC.
The variable frequency and voltage device A is specifically interval 0 variable frequency and voltage device A 0 Interval 1 variable frequency and voltage device A 1 Interval 2 variable frequency and voltage transformation equipment A 2 Interval 3 variable frequency and voltage transformation equipment A 3 N-frequency conversion and transformation equipment A in … … interval n And respectively with the interval 0S 0 Interval 1S 1 Interval 2S 2 Interval 3S 3 … … section nS n The corresponding connection is used for providing three-phase power supply for the electric train LC; by a means ofThe positioning unit P is arranged close to the position where the power supply rail TR is segmented and used for acquiring the position and speed information of the electric train LC and the insulation area between the electric train LC and the ith power supply railIs a relative position of (2); the electronic switch K is connected in parallel with the segment of the power supply rail TR and is used for switching on and switching off the segment of the power supply rail TR; the input end of the ground operation control system EC is respectively connected with the variable frequency and voltage transformation equipment A and the positioning unit P, and the output end of the ground operation control system EC is respectively connected with the variable frequency and voltage transformation equipment A and the electronic switch K and is used for controlling the start and stop and acceleration and deceleration of the electric train LC.
Referring to fig. 3, the three-phase power supply rail TR of the track traffic three-phase power supply system is formed by a first power supply rail TR 1 A second power supply rail TR 2 And a third power supply rail TR 3 A first power supply rail TR 1 A second power supply rail TR 2 And a third power supply rail TR 3 Respectively through the first collector shoes CS 1 Second collector shoe CS 2 And a third collector shoe CS3 is connected to a three-phase drive winding (not shown) on the electric train LC. Therefore, in the embodiment of the present invention, 0S is present in each section 0 Interval 1S 1 Interval 2S 2 Interval 3S 3 … … section nS n The electronic switch K and the positioning unit P are respectively three and are respectively arranged on the first power supply rail TR 1 A second power supply rail TR 2 And a third power supply rail TR 3 And (3) upper part.
The interval 0S 0 Interval 1S 1 Interval 2S 2 Interval 3S 3 … … section nS n The section between two adjacent sections is the ith power supply rail insulation sectionAnd i is E [0, (n-1)]The method comprises the steps of carrying out a first treatment on the surface of the The ith power supply rail insulation area +.>Can be the first power supply railBorder zone->Second supply rail insulation region->Third supply rail insulation region->Fourth power rail insulation region… … or n-th supply rail insulation region->In the embodiment of the invention, the power supply rail insulation areas are connected through the power supply rail sectionalizer between two adjacent sections and are mutually insulated, but the concept of the invention is not limited to a connection mode only by the power supply rail sectionalizer, and other effects which are the same as or similar to the power supply rail sectionalizer can be achieved.
The positioning units P comprise interval 0 positioning units P 0 Section 1 positioning unit P 1 Section 2 positioning unit P 2 Interval 3 positioning unit P 3 N positioning units P in … … interval n The interval 0 positioning unit P 0 Section 1 positioning unit P 1 Section 2 positioning unit P 2 Interval 3 positioning unit P 3 N positioning units P in … … interval n Are respectively and sequentially arranged close to the interval 0S 0 Interval 1S 1 Interval 2S 2 Interval 3S 3 … … section nS n Is the right end of (c). In the embodiment of the present invention, the interval 0 positioning unit P 0 Section 1 positioning unit P 1 Section 2 positioning unit P 2 Interval 3 positioning unit P 3 N positioning units P in … … interval n Are position sensors respectively.
The electronic switch K comprises an electronic switch K of a first power supply rail insulation area 1 Electronic switch of second power supply rail insulation areaK 2 Electronic switch K of third power supply rail insulation area 3 Electronic switch K of fourth power supply rail insulation area 4 Electronic switch K of n-th power supply rail insulation region of … … n Electronic switch K of first power supply rail insulation area 1 Electronic switch K of second power supply rail insulation area 2 Electronic switch K of third power supply rail insulation area 3 Electronic switch K of fourth power supply rail insulation area 4 Electronic switch K of n-th power supply rail insulation region of … … n Respectively with the corresponding first power supply rail insulation areasThe second supply rail insulation region +.>The third supply rail insulation region +.>The fourth supply rail insulation region +.>… … the nth power rail insulation regionAnd are connected in parallel.
As shown in fig. 4, the ground operation control system EC includes a data acquisition module AD, a data processing module DP, a storage module ST, and a communication module CM, where the data acquisition module AD is configured to acquire, in real time, a signal of the positioning unit P and an output current, voltage, and frequency signal of the variable frequency and variable voltage device a; the data processing module DP is connected with the data acquisition module AD and is used for real-time signal conversion processing and logic algorithm realization; the storage module ST is connected with the data processing module DP and is used for storing information in real time; the communication module CM is connected with the data processing module DP and is used for sending control instructions to the variable frequency and voltage transformation equipment A and the electronic switch K.
The data acquisition module AD is respectively connected with the positioning unit P and the variable frequency and variable voltage device A; the communication module CM is respectively connected with the electronic switch K and the variable frequency and variable voltage device A.
Example two
As shown in fig. 5 and 6, the embodiment of the invention provides a method for controlling the uninterrupted power supply section of an electric train, wherein the control method comprises the following specific steps:
step one: LC position and speed information and interval i variable frequency and variable voltage equipment A of electric train are obtained in real time i Is the output current I of (1) Ai Wherein i is [0, (n-1)]；
Step two: when the LC of the electric train iS in the section iS i Transition to interval (i+1) S i+1 When the electric train LC enters the ith power supply rail insulation area, the ground operation control system EC judges whether the electric train LC enters the ith power supply rail insulation area according to the position and the speed of the electric train LC acquired in real timeIf yes, the ground operation control system (EC) controls the electronic switch K of the ith power supply rail insulation area i Triggering conduction and interval i variable frequency and voltage device A i And interval (i+1) variable frequency and voltage device A i+1 Common supply rail insulation region +.>Sum interval (i+1) S i+1 Providing three-phase power supply, and converting and transforming equipment A in interval i i Is the output current I of (1) Ai Electronic switch K of ith power supply rail insulation area reduced to zero i Automatic disconnection and variable frequency and voltage device A by interval (i+1) i+1 Single direction interval (i+1) S i+1 Supplying power; otherwise, returning to the step one.
In the embodiment of the present invention, in the second step, the interval i variable frequency and voltage transformation device a i And interval (i+1) variable frequency and voltage device A i+1 Common supply rail insulation areaSum interval (i+1) S i+1 The method for providing the three-phase power supply comprises the following steps:
real-time interval i variable frequency and voltage transformation equipment A obtained by ground operation control system EC i The output voltage amplitude and phase information of the section (i+1) variable frequency and voltage device A is transmitted to the section (i+1) variable frequency and voltage device A in real time i+1 ；
Synchronous starting control interval (i+1) variable frequency and voltage device A i+1 To the ith power rail insulation areaSum interval (i+1) S i+1 Power supply is carried out to ensure that the amplitude and the phase of the output voltage of the power supply are equal to those of interval i variable frequency and variable voltage equipment A i The amplitude and the phase of the output voltage of the (E) are the same, and the interval i is recorded in the variable frequency and variable voltage device A i The output current of (2) has a magnitude of I A ；
Synchronous control interval (i+1) variable frequency and voltage device A i+1 Output current I Ai+1 Gradually increase to I A And control interval i variable frequency and voltage device A i Is the output current I of (1) Ai From current I A Reducing to zero;
variable frequency and variable voltage equipment A in interval i i Is the output current I of (1) Ai Electronic switch K of ith power supply rail insulation area reduced to zero i Automatic disconnection and simultaneous conversion of variable frequency and voltage equipment A to interval i i Sending a shutdown instruction to enable interval i variable-frequency and variable-voltage equipment A i And (5) stopping.
In the embodiment of the invention, the interval (i+1) frequency conversion and transformation equipment (A i+1 ) Output current I Ai+1 Gradually increasing the speed and the interval i frequency conversion transformation equipment (A i ) Is the output current I of (1) Ai The decreasing speeds are equal.
For a better understanding of embodiments of the present invention, the following is described in detail:
when the electric train LC is from zone i S i Transition to interval (i+1) S i+1 When the electric train LC enters the ith power supply rail insulation area, the ground operation control system EC judges whether the electric train LC enters the ith power supply rail insulation area according to the position and speed information of the electric train LC acquired in real timeThen control the insulation region of the ith power supply railElectronic switch K i Triggering conduction and interval i variable frequency and voltage device A i Providing three-phase power to section (i+1) S i+1 . At this time, the ground operation control system EC converts the interval i frequency and voltage transformation equipment A acquired in real time i The output voltage amplitude and phase information of the section (i+1) is transmitted to the variable frequency and variable voltage device A i+1 And starting the variable-frequency and variable-voltage equipment A in the control section (i+1) i+1 Variable frequency and voltage equipment A for leading the amplitude and phase of the output voltage to be equal to interval i i The output voltage amplitude and phase of (a) are the same.
Variable frequency and voltage device A for recording time interval i i The output current of (2) has a magnitude of I A Control interval i variable frequency and voltage device A i Gradually decreasing to zero while controlling the interval (i+1) variable frequency transformer device a i+1 Is the output current I of (1) Ai+1 Gradually increase to I A And I Ai+1 Is greater than the increase rate and I of Ai Is equal to the reduction rate of (c). Then, the ground operation control system EC converts the voltage to the interval i variable frequency and transformation equipment A i Sending a shutdown instruction, and converting and transforming equipment A in interval i i Stopping, and converting and transforming equipment A of electric locomotive LC from section (i+1) i+1 And independently supplying power.
When the next electric train transits from a certain section to a next section, the ground operation control system EC repeats the control strategy on the variable frequency and voltage transformation device of the certain section, the variable frequency and voltage transformation device of the next section and the electronic switch K, and the control on the electric train is completed, so that the continuous power-off and sectionalized control of the train on the whole operation line is realized.
Because only one electric train is allowed to pass through each section of the power supply rail, the ground operation control system EC should adjust the output frequency and voltage of the variable frequency and voltage transformation equipment in each section according to the position signal of the electric train in each section, so that the relative position of the electric train in each section is in a set range.
Therefore, the uninterrupted power section control system and the uninterrupted power section control method for the electric train can realize the uninterrupted power section without perception, have low economic cost and create favorable conditions for artificial intelligent unmanned operation.
Claims (10)
1. A power train uninterrupted power-dividing control system is used for a track traffic three-phase power supply system, the track traffic three-phase power supply system comprises a three-phase power supply rail (TR), and the power supply rail (TR) is divided into intervals 0 (S) 0 ) Section 1 (S) 1 ) Interval 2 (S) 2 ) Interval 3 (S) 3 ) … … interval i (S i ) … … interval n (S) n ) Characterized in that the control system comprises:
variable frequency and transforming device (A), in particular interval 0 variable frequency and transforming device (A 0 ) Interval 1 variable frequency transformer equipment (A) 1 ) Interval 2 variable frequency transformer equipment (A) 2 ) Interval 3 variable frequency transformer equipment (A) 3 ) Interval i frequency conversion transformer equipment … … (A) i ) N frequency conversion transformer equipment (A) in … … interval n ) And respectively with the interval 0 (S 0 ) Section 1 (S) 1 ) Interval 2 (S) 2 ) Interval 3 (S) 3 ) … … interval i (S i ) … … interval n (S) n ) The corresponding connection is used for providing three-phase power supply for the electric train (LC);
a positioning unit (P) installed close to the section between adjacent sections of the power supply rail (TR) for acquiring the position and speed information of the electric train (LC) and the insulation area (Q) of the electric train (LC) and the ith power supply rail Si-Si+1 ) Is a relative position of (2); the interval 0 (S 0 ) Section 1 (S) 1 ) Interval 2 (S) 2 ) Interval 3 (S) 3 ) … … interval i (S i ) … … interval n (S) n ) At the section between the adjacent two sections of (a) is the ith power rail insulation section (Q Si-Si+1 ) And i is E [0, (n-1)]；
An electronic switch (K) connected in parallel with a segment of the supply rail (TR) for switching on and off the segment of the supply rail (TR);
the ground operation control system (EC) is respectively connected with the variable frequency and voltage transformation equipment (A) and the positioning unit (P) at the input end and the variable frequency and voltage transformation equipment (A) and the electronic switch (K) at the output end, and is used for controlling the start-stop and acceleration and deceleration of the electric train (LC);
the ground operation control system (EC) is also used for enabling the electric train to be continuously segmented by controlling the variable frequency and variable voltage equipment (A) in the adjacent section;
when the electric train is not powered off and is segmented, the position and speed information of the electric train (LC) and interval i variable frequency and variable voltage equipment (A) are obtained in real time i ) Is the output current I of (1) Ai The method comprises the steps of carrying out a first treatment on the surface of the When the electric train (LC) is in the section i (S i ) Transition to interval (i+1) (S i+1 ) When the power train (LC) enters the ith power supply rail insulation area (Q) according to the position and the speed of the power train (LC) acquired in real time, the ground operation control system (EC) judges whether the power train (LC) enters the ith power supply rail insulation area (Q) Si-Si+1 ) The method comprises the steps of carrying out a first treatment on the surface of the If yes, the ground operation control system (EC) controls the electronic switch (K) of the ith power supply rail insulation area i ) Triggering conduction, interval i frequency conversion transformation equipment (A) i ) And section (i+1) frequency conversion transformation equipment (A) i+1 ) Commonly supplying power to the ith power rail insulation region (Q Si-Si+1 ) And interval (i+1) (S i+1 ) Providing three-phase power supply, when interval i frequency conversion transformation equipment (A i ) Is the output current I of (1) Ai When reduced to zero, the electronic switch (K) i ) Automatic disconnection and conversion of voltage by interval (i+1) variable frequency voltage device (A i+1 ) The single direction interval (i+1) (S i+1 ) Supplying power; otherwise, the execution is continuously returned to' real-time acquisition of the position and speed information of the electric train (LC) and interval i variable frequency and voltage transformation equipment (A) i ) Is the output current I of (1) Ai ”；
Wherein in said interval i the variable frequency and transforming device (a i ) And section (i+1) frequency conversion transformation equipment (A) i+1 ) Commonly supplying power to the ith power rail insulation region (Q Si-Si+1 ) And interval (i+1) (S i+1 ) During the period of providing three-phase power supply, a ground operation control system (EC) acquires interval i variable frequency and voltage equipment (A) in real time i ) The output voltage amplitude and phase information of the section (i+1) is transmitted to the variable frequency and variable voltage device (A) i+1 ) The method comprises the steps of carrying out a first treatment on the surface of the Synchronous starting control interval (i+1) frequency conversion voltage transformation equipment (A) i+1 ) To the ith supply rail insulation region (Q Si-Si+1 ) And interval (i+1) (S i+1 ) Power is supplied to the variable frequency and voltage device (A) with the output voltage amplitude and phase thereof and interval i i ) The output voltage amplitude and phase of the voltage are the same, and the interval i frequency conversion transformation device (A i ) The output current of (2) has a magnitude of I A The method comprises the steps of carrying out a first treatment on the surface of the Synchronization control interval (i+1) becomesFrequency transformation equipment (A) i+1 ) Output current I Ai+1 Gradually increase to I A And control section i variable frequency transformer equipment (A) i ) Is the output current I of (1) Ai From current I A Reducing to zero.
2. A power train uninterruptible power section control system according to claim 1, wherein the ith power rail insulation area (Q Si-Si+1 ) For the first supply rail insulation region (Q S0-S1 ) A second power supply rail insulation region (Q S1-S2 ) Third power rail insulation region (Q) S2-S3 ) Fourth power rail insulation region (Q) S3-S4 ) … … or nth supply rail insulation region (Q) Sn-1-Sn )。
3. The electric train uninterruptible power section control system according to claim 1, wherein the positioning unit (P) comprises a section 0 positioning unit (P 0 ) Interval 1 positioning unit (P) 1 ) Section 2 positioning unit (P) 2 ) Section 3 positioning unit (P) 3 ) N positioning units (P) in … … intervals n ) The interval 0 positioning unit (P 0 ) Interval 1 positioning unit (P) 1 ) Section 2 positioning unit (P) 2 ) Section 3 positioning unit (P) 3 ) N positioning units (P) in … … intervals n ) Are respectively and sequentially arranged close to the interval 0 (S 0 ) Section 1 (S) 1 ) Interval 2 (S) 2 ) Interval 3 (S) 3 ) … … interval n (S) n ) Is the right end of (c).
4. A power train uninterrupted power section control system according to claim 2, characterized in that the electronic switch (K) comprises an electronic switch (K 1 ) Electronic switch (K) of the second supply rail insulation region 2 ) Electronic switch (K) of third supply rail insulation region 3 ) Electronic switch (K) of the fourth supply rail insulation region 4 ) Electronic switch (K) of n-th power supply rail insulating region of … … n ) Electronic switch (K) of the first supply rail insulation region 1 ) Electronic switch (K) of the second supply rail insulation region 2 ) Electronic switch (K) of third supply rail insulation region 3 ) Electronic switch (K) of the fourth supply rail insulation region 4 ) Electronic switch (K) of n-th power supply rail insulating region of … … n ) Respectively with the corresponding first power supply rail insulation region (Q S0-S1 ) Said second supply rail insulation region (Q S1-S2 ) Said third supply rail insulation region (Q S2-S3 ) Said fourth supply rail insulation region (Q S3-S4 ) An n-th power rail insulation region (Q) as described in … … Sn-1-Sn ) And are connected in parallel.
5. A power train constant power segment control system according to claim 1, characterized in that the ground handling system (EC) comprises:
the data acquisition module (AD) is used for acquiring the signals of the positioning unit (P) and the output current, voltage and frequency signals of the variable-frequency and variable-voltage equipment (A) in real time;
the data processing module (DP) is connected with the data acquisition module (AD) and is used for real-time signal conversion processing and logic algorithm realization;
the storage module (ST) is connected with the data processing module (DP) and used for storing information in real time;
and the Communication Module (CM) is connected with the data processing module (DP) and is used for sending control instructions to the variable-frequency and variable-voltage equipment (A) and the electronic switch (K).
6. A power train continuous sectional control system according to claim 5, characterized in that the data acquisition module (AD) is connected to the positioning unit (P) and the variable frequency and transforming device (a), respectively; the Communication Module (CM) is respectively connected with the electronic switch (K) and the variable frequency and variable voltage device (A).
7. A power train uninterruptible power section control system according to claim 3, characterized in that the section 0 positioning unit (P 0 ) Interval 1 positioning unit (P) 1 ) Section 2 positioning unit (P) 2 ) Section 3 positioning unit (P) 3 ) … … regionInterval n positioning unit (P) n ) Are position sensors respectively.
8. An electric train uninterruptible power section control method using the electric train uninterruptible power section control system according to any one of claims 1 to 7, characterized in that the control method comprises the following specific steps:
step one: real-time acquisition of position and speed information of an electric train (LC) and interval i variable frequency and voltage device (A) i ) Is the output current I of (1) Ai Wherein i is [0, (n-1)]；
Step two: when the electric train (LC) is in the section i (S i ) Transition to interval (i+1) (S i+1 ) When the power train (LC) enters the ith power supply rail insulation area (Q) according to the position and the speed of the power train (LC) acquired in real time, the ground operation control system (EC) judges whether the power train (LC) enters the ith power supply rail insulation area (Q) Si-Si+1 ) The method comprises the steps of carrying out a first treatment on the surface of the If yes, the ground operation control system (EC) controls the electronic switch (K) of the ith power supply rail insulation area i ) Triggering conduction, interval i frequency conversion transformation equipment (A) i ) And section (i+1) frequency conversion transformation equipment (A) i+1 ) Commonly supplying power to the ith power rail insulation region (Q Si-Si+1 ) And interval (i+1) (S i+1 ) Providing three-phase power supply, when interval i frequency conversion transformation equipment (A i ) Is the output current I of (1) Ai When reduced to zero, the electronic switch (K) i ) Automatic disconnection and conversion of voltage by interval (i+1) variable frequency voltage device (A i+1 ) The single direction interval (i+1) (S i+1 ) Supplying power; otherwise, returning to the step one.
9. The method according to claim 8, wherein in the second step, the section i variable frequency and voltage device (a i ) And section (i+1) frequency conversion transformation equipment (A) i+1 ) Commonly supplying power to the ith power rail insulation region (Q Si-Si+1 ) And interval (i+1) (S i+1 ) The method for providing three-phase power supply comprises the following steps:
real-time acquisition interval i variable-frequency and variable-voltage equipment (A) of ground operation control system (EC) i ) The output voltage amplitude and phase information of the section (i+1) is transmitted to the variable frequency and variable voltage device (A) i+1 )；
Synchronous starting control interval (i+1) frequency conversion voltage transformation equipment (A) i+1 ) To the ith supply rail insulation region (Q Si-Si+1 ) And interval (i+1) (S i+1 ) Power is supplied to the variable frequency and voltage device (A) with the output voltage amplitude and phase thereof and interval i i ) The output voltage amplitude and phase of the voltage are the same, and the interval i frequency conversion transformation device (A i ) The output current of (2) has a magnitude of I A ；
Synchronous control interval (i+1) frequency conversion voltage transformation equipment (A) i+1 ) Output current I Ai+1 Gradually increase to I A And control section i variable frequency transformer equipment (A) i ) Is the output current I of (1) Ai From current I A Reducing to zero;
variable frequency and transforming equipment (A) in interval i i ) Is the output current I of (1) Ai When reduced to zero, the electronic switch (K) i ) Automatic disconnection, simultaneous conversion to interval i transformation device (a i ) Sending a shutdown command to cause the interval i variable frequency transformer equipment (A i ) And (5) stopping.
10. The electric train uninterruptible power section control method according to claim 9, wherein the section (i+1) variable-frequency voltage transformation device (a i+1 ) Output current I Ai+1 Gradually increasing the speed and the interval i frequency conversion transformation equipment (A i ) Is the output current I of (1) Ai The decreasing speeds are equal.
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