CN112277643A - Auxiliary system starting time optimization control method based on TCMS - Google Patents
Auxiliary system starting time optimization control method based on TCMS Download PDFInfo
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- CN112277643A CN112277643A CN202011032917.1A CN202011032917A CN112277643A CN 112277643 A CN112277643 A CN 112277643A CN 202011032917 A CN202011032917 A CN 202011032917A CN 112277643 A CN112277643 A CN 112277643A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/36—Means for starting or stopping converters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Abstract
The invention provides an auxiliary system starting time optimal control method based on TCMS, which is characterized in that an alternating current medium-voltage bus is divided into 4 sections to operate, different auxiliary converter starting control methods are implemented according to different permutation and combination of Q35 states through TCMS programming, the starting time of an auxiliary converter of a whole vehicle is shortened, and further the starting time of medium-voltage load of the whole vehicle is shortened; according to the invention, the starting time of 1 auxiliary converter is assumed to be 5s, and the auxiliary converter of the whole train can be started within 10s under the working condition, so that compared with the traditional one-by-one sequential starting mode, the starting time is shortened by 50%; under the fault condition, the number of auxiliary power supply systems in different alternating current bus intervals is determined according to the states of 3Q 35: when only 1 auxiliary system is contained in the section, the system can be directly started; when the interval only contains more than 2 auxiliary systems, the optimized starting control logic can be carried out, and the auxiliary starting time under the fault working condition is not higher than that under the normal mode.
Description
Technical Field
The invention belongs to the technical field of alternating current power supply control of an auxiliary power supply system of a motor train unit train, and particularly relates to a control method for optimizing starting time of the auxiliary system under a fault working condition.
Background
In the auxiliary converter module start-up process, in order to avoid the alternate short circuit that the auxiliary converter module started simultaneously and caused under the same alternating current bus, need carry out reasonable control to auxiliary system start-up order, 4 auxiliary power supply systems of full train start-up one by one according to certain sequencing, the problem of alternate short circuit when this mode can effectively avoid auxiliary system to start, nevertheless whole boot time is longer, assume that 1 auxiliary converter module boot time needs 5s, the supplementary start-up of whole car will need 20s at least so, the vehicle middling pressure power supply is consuming too long, influence whole car middling pressure load boot time.
At present, 1Q 35 coupling contactor is arranged in a medium-voltage bus of an auxiliary power supply system, and under a fault working condition, the medium-voltage bus of alternating current is divided into two sections by controlling the on-off state of Q35. And the two auxiliary power supply systems in the fault section stop working, and the two auxiliary power supply systems in the normal bus section carry out sequential starting control. The method has simple control strategy, but is not beneficial to the maximum utilization of the electric energy of the auxiliary power supply system of the whole train.
Disclosure of Invention
The invention aims to realize the starting control of the auxiliary system through TCMS table look-up programming, optimize the starting time of the auxiliary system, maximally shorten the starting time of the medium-voltage load of the whole motor train unit, and simultaneously maximally utilize the electric energy of the auxiliary power supply system of the whole motor train unit.
In order to achieve the purpose, the invention provides an auxiliary system starting time optimization control method based on TCMS, which is characterized in that the TCMS judges the grouping condition of an auxiliary converter of the whole vehicle and a circuit section where the auxiliary converter is located by acquiring the closed states of a plurality of coupling breakers (Q35) arranged on the whole vehicle, and then manages the starting sequence of the auxiliary converter in the control circuit section by adopting different control logics according to the final judgment result, so that the maximum number of the auxiliary converters can be started in the shortest time, and the maximum electric energy can be provided for medium-voltage loads on the vehicle on the basis of shortening the starting time.
The method is characterized in that 3Q 35 are arranged on a medium-voltage alternating-current bus to divide the alternating-current bus into 4 sections, under the technical route, if the alternating-current bus is normal, 4 auxiliary converter modules in a whole row are in grid-connected operation to supply power to an alternating-current load of a whole vehicle, and under the working condition, the TCMS selects one auxiliary converter module to be started preferentially according to an auxiliary ready signal.
When a first auxiliary converter is started, after medium-voltage bus alternating current in all columns is established, determining alternating current phases of grid-connected power supply of the other 3 auxiliary systems according to the bus voltage phases, then starting the other 3 auxiliary converters, and allowing the inverter to start as long as the other 3 auxiliary converters send ready signals, wherein the auxiliary converters establish and output alternating current according to the bus voltage phases after obtaining TCMS (thyristor controlled system) allowed starting signals;
when the Q35 is not completely closed, different permutation and combination of Q35 states exist, and the starting control of the auxiliary converter is determined according to the situation of the permutation and combination of the Q35 states, and the specific control method is as follows:
(1) only 3 cars Q35 are off, 2 car assist is independently controllable at a separate bus bar section; 4. 5, 7 vehicle assistance is in a bus interval, and after the first selected vehicle is started, the rest 2 vehicle assistance can be simultaneously started in a grid-connected mode;
(2) only 5 vehicles Q35 are disconnected, 2 and 4 vehicles are assisted in a bus section, and after the first vehicle is selected to start to establish the bus voltage of the section, the other vehicle is started again; 5. 7, the vehicle is assisted to be in a bus section, and after a first station is selected to start and establish the bus voltage of the section, the other station is started again;
(3) only 6 cars Q35 are off, 7 cars assist in independent control of the individual bus bar sections; 2. 4, 5 vehicle assistance is in a bus interval, and after the first selected vehicle is started, the rest 2 vehicle assistance can be simultaneously started in a grid-connected mode;
(4) the vehicles 3 and 5 are disconnected from the Q35, and the auxiliary vehicles 2 are in a separate bus bar section and can be independently controlled; 4, the auxiliary vehicle is positioned in an independent bus section and can be independently controlled; 5, the 7-vehicle auxiliary is positioned in the same bus section, and after the first auxiliary starting is selected to establish the bus voltage of the section, the other auxiliary starting is started again;
(5) the vehicles 3 and 6 are disconnected from the Q35, and the auxiliary vehicles 2 are in a separate bus bar section and can be independently controlled; 7, the bus auxiliary is positioned in an independent bus section and can be independently controlled; the 4-vehicle and 5-vehicle auxiliary devices are in the same bus section, and after the first auxiliary device is selected to start and establish the bus voltage of the section, the other auxiliary device is started again;
(6) the vehicles 5 and 6 are disconnected from the Q35, and the auxiliary vehicles 5 are in a separate bus bar section and can be independently controlled; 7, the bus auxiliary is positioned in an independent bus section and can be independently controlled; the 2-vehicle and 4-vehicle auxiliary devices are in the same bus section, and after the first auxiliary device is selected to start and establish the bus voltage of the section, the other auxiliary device is started again;
(7) the 3, 5 and 6 vehicles Q35 are all off, all the accessories are in separate bus bar sections, and can be controlled independently.
Compared with the prior art, the invention has the advantages and the progress that:
firstly, an alternating current medium-voltage bus is divided into 4 sections to operate, different auxiliary converter starting control methods are implemented according to different arrangement combinations of Q35 states through TCMS programming, the starting time of an auxiliary converter of the whole vehicle is shortened, and further the starting time of medium-voltage loads of the whole vehicle is shortened; according to the invention, the starting time of 1 auxiliary converter is assumed to be 5s, and the auxiliary converter of the whole train can be started within 10s under the working condition, so that compared with the traditional one-by-one sequential starting mode, the starting time is shortened by 50%;
secondly, under the fault working condition, determining the number of auxiliary power supply systems in different alternating current bus intervals according to the states of 3Q 35: when only 1 auxiliary system is contained in the section, the system can be directly started; when the interval only contains more than 2 auxiliary systems, the optimized starting control logic can be carried out, and the auxiliary starting time under the fault working condition is not higher than that under the normal mode;
and utilizing the electric energy of an auxiliary power supply system of the whole train of the motor train unit to the maximum extent through a multi-section independent power supply mode during fault.
Drawings
Fig. 1 is an electrical layout diagram of an ac bus of an auxiliary power supply system.
Detailed Description
As shown in fig. 1, 1 traction inverter converter is respectively installed on 2, 4, 5 and 7 trains of the motor train unit, the output circuit realizes the through of the medium voltage power supply of the whole train through the coupling circuit breakers on 3, 5 and 6 trains, and the output power sources of all the traction inverter converters jointly supply power for the medium voltage loads of 1-8 trains.
After the high-voltage equipment of the motor train unit is normally started, the TCMS judges whether a medium-voltage alternating-current bus of the whole train is through by acquiring the closing condition fed back by 3 coupling circuit breakers (Q35), and manages the starting sequence of traction inverter converters in a control circuit section by adopting different control logics according to the final judgment result, so that the maximum number of traction inverter converters can be started in the shortest time, and the maximum electric energy can be provided for medium-voltage loads on the train on the basis of shortening the starting time.
When a medium-voltage short circuit or a ground fault occurs in a certain section, the coupling circuit breaker (Q35) near the fault position is disconnected, the fault section can be effectively isolated, and the medium-voltage power supply and the normal work of medium-voltage loads in a non-fault section are ensured (for example, when 2 vehicles have a short-circuit fault, 3 vehicles can be disconnected by disconnecting the coupling circuit breaker of 3 vehicles, 1 vehicle and 2 vehicles are isolated, and the medium-voltage of 3-8 vehicles can still normally work, and when 4 vehicles have a short-circuit fault, 3 vehicles and 4 vehicles can be isolated by disconnecting the coupling circuit breaker of 3 vehicles and 5 vehicles, the medium-voltage of 1-2 vehicles can still normally work, and the medium-voltage of 5-8 vehicles can still normally work, and so on), and the maximization.
The specific process is as follows:
1. the method comprises the following steps that 3Q 35 are arranged on a medium-voltage alternating-current bus to divide the alternating-current bus into 4 sections, under the technical route, if the alternating-current bus is normally penetrated, 4 auxiliary inverter modules in a whole row are in grid-connected operation to supply power to a medium-voltage load of a whole vehicle, under the working condition, a TCMS selects a first received auxiliary inverter module as a first priority to start according to a ready signal sent by the auxiliary inverters, and if the TCMS simultaneously receives the ready signal sent by the 4 auxiliary inverters, 2 auxiliary inverters are preferentially selected as the first priority to start;
2. when a first auxiliary inverter is started and medium-voltage bus alternating current in a whole row is established, determining alternating current phases of grid-connected power supply of the other 3 auxiliary systems according to the bus voltage phases, then starting the other 3 auxiliary converters, and allowing the inverter to start as long as the other 3 auxiliary inverters send ready signals, wherein the auxiliary inverter establishes and outputs alternating current according to the bus voltage phases after the TCMS allows starting signals to be obtained;
3. when the Q35 is not completely closed, a permutation combination of different Q35 states exists, and the starting control of the auxiliary inverter is determined according to the situation of the permutation combination of the Q35 states, and the specific control method is as follows:
(1) only 3 cars Q35 are off, 2 car assist is independently controllable at a separate bus bar section; 4. 5, 7 vehicle assistance is in a bus interval, and after the first selected vehicle is started, the rest 2 vehicle assistance can be simultaneously started in a grid-connected mode;
(2) only 5 vehicles Q35 are disconnected, 2 and 4 vehicles are assisted in a bus section, and after the first vehicle is selected to start to establish the bus voltage of the section, the other vehicle is started again; 5. 7, the vehicle is assisted to be in a bus section, and after a first station is selected to start and establish the bus voltage of the section, the other station is started again;
(3) only 6 vehicles Q35 are disconnected, and 7 vehicles auxiliary devices can be independently controlled in a single bus section, namely, the 7 vehicles auxiliary inverter can be started when being prepared, and the starting state of other auxiliary inverters does not need to be referred; 2. 4, 5 vehicle assistance is in a bus interval, and after the first selected vehicle is started, the rest 2 vehicle assistance can be simultaneously started in a grid-connected mode;
(4) the Q35 of the 3-car and the 5-car are disconnected, the 2-car auxiliary is in a separate bus section and can be independently controlled, namely, the 2-car auxiliary inverter can be started when being prepared, and the starting state of other auxiliary inverters is not required to be referred; the 4-vehicle auxiliary inverter is positioned in a single bus section and can be independently controlled, namely, the 4-vehicle auxiliary inverter can be started when being prepared, and the starting state of other auxiliary inverters is not required to be referred; 5, the 7-vehicle auxiliary is positioned in the same bus section, and after the first auxiliary starting is selected to establish the bus voltage of the section, the other auxiliary starting is started again;
(5) the Q35 of the 3-vehicle and the 6-vehicle are disconnected, the 2-vehicle auxiliary is in a separate bus section and can be independently controlled, namely, the 2-vehicle auxiliary inverter can be started when being prepared, and the starting state of other auxiliary inverters is not required to be referred; the 7-vehicle auxiliary inverter is positioned in an independent bus section and can be independently controlled, namely, the 7-vehicle auxiliary inverter can be started when being prepared, and the starting state of other auxiliary inverters is not required to be referred; the 4-vehicle and 5-vehicle auxiliary devices are in the same bus section, and after the first auxiliary device is selected to start and establish the bus voltage of the section, the other auxiliary device is started again;
(6) the 5-vehicle and 6-vehicle Q35 are disconnected, the 5-vehicle auxiliary is in a separate bus section and can be independently controlled, namely, the 5-vehicle auxiliary inverter can be started when being prepared, and the starting state of other auxiliary inverters is not required to be referred; the 7-vehicle auxiliary inverter is positioned in an independent bus section and can be independently controlled, namely, the 7-vehicle auxiliary inverter can be started when being prepared, and the starting state of other auxiliary inverters is not required to be referred; the 2-vehicle and 4-vehicle auxiliary devices are in the same bus section, and after the first auxiliary device is selected to start and establish the bus voltage of the section, the other auxiliary device is started again;
(7) the Q35 of the 3-vehicle, the 5-vehicle and the 6-vehicle are all disconnected, all the accessories are in separate bus sections and can be independently controlled, namely, the auxiliary inverter of the vehicle can be started when the auxiliary inverter of the vehicle is ready without referring to the starting state of other auxiliary inverters.
Claims (3)
1. A method for optimizing and controlling the starting time of an auxiliary system based on TCMS is characterized in that: 1 auxiliary converter is respectively installed on 2, 4, 5 and 7 motor train units, the output circuit realizes the through of the medium voltage power supply of the whole row through the coupling breakers on the medium voltage alternating current buses of the 3, 5 and 6 motor train units, and the output power supplies of all the auxiliary converters jointly supply power for the medium voltage loads of the 1-8 motor train units; when the high-voltage equipment of the motor train unit is normally started, the TCMS judges whether a medium-voltage alternating-current bus of the whole train is through by acquiring the closing condition fed back by the 3 coupling circuit breakers, and when a medium-voltage short circuit or a ground fault occurs in a certain section, the coupling circuit breakers near the fault position are disconnected to isolate the fault section, so that the normal work of medium-voltage power supply and medium-voltage load of a non-fault section is ensured, and the maximization of available electric energy is ensured.
2. The TCMS-based control method for optimizing start-up time of an auxiliary system according to claim 1, wherein: the method comprises the following steps that an alternating current bus is divided into 4 sections by 3 coupling breakers on a medium-voltage alternating current bus, if the alternating current bus is normal, 4 auxiliary converters in a full row are in grid-connected operation to supply power to an alternating current load of a whole vehicle, and under the working condition, a TCMS selects one auxiliary converter module to be started preferentially according to an auxiliary ready signal; when the first auxiliary converter is started, after the alternating current of the medium-voltage bus in the whole row is established, the alternating current phases of the other 3 auxiliary systems for grid-connected power supply are determined according to the alternating current bus voltage phases, then the other 3 auxiliary converters are started, as long as the other 3 auxiliary converters send ready signals, the TCMS allows the auxiliary converter to be started, and after the TCMS allows starting signals, the auxiliary converter establishes and outputs the alternating current according to the bus voltage phases.
3. The TCMS-based control method for optimizing start-up time of an auxiliary system according to claim 1, wherein: when any one coupling circuit breaker is not completely closed, different coupling circuit breaker state permutation and combination exist, the starting control of the auxiliary converter is determined according to the state permutation and combination condition of the coupling circuit breaker, and the specific control method comprises the following steps:
(1) only 3 vehicle coupling breakers are disconnected, and 2 vehicle auxiliary converters are independently controlled in a single bus section; 4. 5, 7 auxiliary converters are positioned in a bus interval, and after a first selected auxiliary converter is started, the rest 2 auxiliary converters are simultaneously started in a grid-connected mode;
(2) only 5 vehicle coupling breakers are disconnected, 2 and 4 vehicle auxiliary converters are positioned in a bus section, and after a first vehicle is selected to start to establish the bus voltage of the section, the other vehicle is started again; 5. 7, the auxiliary converter of the vehicle is positioned in a bus section, and after a first station is selected to start and establish the bus voltage of the section, the other station is started again;
(3) only 6 vehicle coupling breakers are disconnected, 7 vehicle auxiliary converters are independently controlled in a single bus section, 2, 4 and 5 vehicle auxiliary converters are in one bus section, and after a first selected vehicle is started, the rest 2 auxiliary converters are simultaneously started in a grid-connected mode;
(4) the 3-vehicle and 5-vehicle coupling circuit breakers are disconnected, and the 2-vehicle auxiliary converter is positioned in an independent bus section and is independently controlled; 4, the auxiliary converters of the 5-vehicle and the 7-vehicle are in the same bus section, and after the first auxiliary converter is selected to start and establish the bus voltage of the section, the other auxiliary converter is started again;
(5) the method comprises the following steps that 3, 6 car coupling breakers are disconnected, 2 car auxiliary converters are located in separate bus sections and independently controlled, 7 car auxiliary converters are located in separate bus sections and independently controlled, 4 car auxiliary converters and 5 car auxiliary converters are located in the same bus section, and after a first auxiliary converter is selected to be started to establish the bus voltage of the section, the other auxiliary converter is started again;
(6) the method comprises the following steps that a 5-vehicle and 6-vehicle coupling circuit breaker is disconnected, a 5-vehicle auxiliary converter is positioned in a separate bus section and is independently controlled, a 7-vehicle auxiliary converter is positioned in a separate bus section and is independently controlled, a 2-vehicle auxiliary converter and a 4-vehicle auxiliary converter are positioned in the same bus section, and after a first auxiliary converter is selected to be started to establish the bus voltage of the section, the other auxiliary converter is started again;
(7)3 cars, 5 cars and 6 cars of coupling circuit breakers all break off, and all auxiliary converters are all in independent bus section, all independent control.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113659617A (en) * | 2021-07-28 | 2021-11-16 | 中车唐山机车车辆有限公司 | Auxiliary power supply management system and method and railway vehicle |
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| JP2006174573A (en) * | 2004-12-15 | 2006-06-29 | Toshiba Corp | Power supply unit and power supply starting method for railroad vehicle |
| CN109774494A (en) * | 2019-02-26 | 2019-05-21 | 中车长春轨道客车股份有限公司 | High-speed EMUs auxiliary power supply system control method, system and high-speed EMUs |
| CN109878333A (en) * | 2019-02-26 | 2019-06-14 | 中车长春轨道客车股份有限公司 | Ac bus control method and system are pressed in one kind |
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2020
- 2020-09-27 CN CN202011032917.1A patent/CN112277643A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006174573A (en) * | 2004-12-15 | 2006-06-29 | Toshiba Corp | Power supply unit and power supply starting method for railroad vehicle |
| CN109774494A (en) * | 2019-02-26 | 2019-05-21 | 中车长春轨道客车股份有限公司 | High-speed EMUs auxiliary power supply system control method, system and high-speed EMUs |
| CN109878333A (en) * | 2019-02-26 | 2019-06-14 | 中车长春轨道客车股份有限公司 | Ac bus control method and system are pressed in one kind |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113659617A (en) * | 2021-07-28 | 2021-11-16 | 中车唐山机车车辆有限公司 | Auxiliary power supply management system and method and railway vehicle |
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