CN116674596A - Control method and related components of hybrid power locomotive - Google Patents
Control method and related components of hybrid power locomotive Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C7/00—Other locomotives or motor railcars characterised by the type of motive power plant used; Locomotives or motor railcars with two or more different kinds or types of motive power
- B61C7/04—Locomotives or motor railcars with two or more different kinds or types of engines, e.g. steam and IC engines
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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
- B60L9/00—Electric propulsion with power supply external to the vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C17/00—Arrangement or disposition of parts; Details or accessories not otherwise provided for; Use of control gear and control systems
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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
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
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Abstract
The invention discloses a control method and related components of a hybrid power locomotive, which relate to the field of locomotive power supply, wherein the second voltage output by a controllable rectifying module is regulated through the rectifying module, namely, the voltage input to an intermediate direct-current circuit by a diesel power supply module is regulated, namely, the pressure difference between the voltage generated by a contact net and the voltage generated by two power sources of a diesel is eliminated, so that the two power sources can supply power to the hybrid power locomotive at the same time; meanwhile, the connection mode of the diesel engine power supply module and the middle direct current circuit is controlled by the connection and disconnection between the input end of the controllable switch module and the first output end and the second output end, namely, the connection relation between the diesel engine power supply module and the auxiliary load and the traction system of the hybrid power locomotive is controlled, namely, the control of the controllable switch module is controlled to switch the power source, and the seamless switching can be realized without losing power supply in the power source switching process.
Description
Technical Field
The invention relates to the field of locomotive power supply, in particular to a control method and related components of a hybrid power locomotive.
Background
With the development of the China mechanical industry, the field of power locomotives is also rapidly advanced, and hybrid power locomotives are already developed nowadays. The hybrid power locomotive refers to a locomotive with different power sources, the common hybrid power locomotive generally adopts two power sources of a contact net and a diesel engine to form a power supply system with double power sources, and a part of the hybrid power locomotive needing the power sources to supply power comprises a traction system for traction braking and an auxiliary system formed by auxiliary loads such as an air conditioning module and a lighting module. Referring to fig. 1, fig. 1 is a schematic structural diagram of a power supply system of a conventional hybrid locomotive: the double power source is connected with the auxiliary load 105 and the traction inverter 106 after passing through the rectifying module 103 and the intermediate direct current circuit 104, namely, the voltage provided by the double power source can directly supply power to the auxiliary load after being rectified by the rectifying module and filtered by the intermediate direct current circuit, but when the power is supplied to the traction system, the voltage also needs to be supplied to the traction motor 107 after passing through the traction inverter.
In the prior art, because there is pressure difference between the contact net and the voltage generated by the diesel engine, in order to avoid the problem that the power source burns out and other faults caused by short circuit when the two power sources supply power to the hybrid power locomotive simultaneously, the two power sources are operated independently, namely, only one set of power source can supply power to the hybrid power locomotive simultaneously: when the power grid supplies power normally, a pantograph on the hybrid power locomotive rises, and the hybrid power locomotive receives current from the overhead line system through the pantograph to supply power for the hybrid power locomotive; when the power grid is powered off or the hybrid locomotive passes through the electrified section, the pantograph on the hybrid locomotive drops, and after the diesel engine is preheated by the preheating module, the diesel engine burns fuel to generate electric energy to supply power for the hybrid locomotive. By adopting the control method, when the power supply mode is switched between two power supplies, the hybrid power locomotive is temporarily powered off, namely, the traction system and the auxiliary load temporarily lose power supply of the power supplies to stop working, and the power supply can be restored and restarted after the power supplies are switched, so that the riding experience of passengers is influenced.
Disclosure of Invention
The invention aims to provide a control method and related components of a hybrid power locomotive, which eliminate the pressure difference between voltages generated by two power sources of a contact net and a diesel engine, so that the two power sources can supply power to the hybrid power locomotive at the same time, the control of power source switching is realized by controlling a controllable switch module, the power supply is not lost in the process of power source switching, and seamless switching can be realized.
In order to solve the technical problem, the invention provides a control method of a hybrid power locomotive, which is applied to a processor of a power supply system of the hybrid power locomotive, wherein the power supply system further comprises a controllable switch module and a controllable rectifying module, the input end of the controllable switch module is connected with a diesel engine power supply module, the first output end of the controllable switch module is respectively connected with the input ends of a contact net power supply module and the rectifying module, the second output end of the controllable switch module is connected with the input end of the controllable rectifying module, and the output end of the controllable rectifying module is respectively connected with the output end of the rectifying module and the input end of an intermediate direct current circuit, and the control method comprises the following steps:
when a power source switching instruction is received, the conduction between the input end and the second output end of the controllable switch module is controlled, so that the diesel engine power supply module is connected with the input end of the controllable rectifying module;
according to the first voltage of the output end of the rectifying module, regulating the second voltage output by the controllable rectifying module so that the voltage difference between the first voltage and the second voltage is within a preset rated safety voltage difference range;
when the switching power source meets the preset power supply condition, the connection between the initial power source of the hybrid power locomotive and the hybrid power locomotive is disconnected, wherein the initial power source is the power source of the hybrid power locomotive before the switching power source switching instruction is received, and the switching power source is the power source which is different from the initial power source in the double power sources.
In one aspect, before controlling conduction between the input terminal and the second output terminal of the controllable switch module, the method further includes:
judging whether the initial power source is the catenary power supply module or not;
and if not, controlling the pantograph in the overhead line system power supply module to rise so that the hybrid locomotive receives current from the overhead line system in the overhead line system power supply module through the pantograph.
On the one hand, judging whether the initial power source is the catenary power supply module comprises the following steps:
judging whether the pantograph is connected with the contact net or not;
if yes, judging that the initial power source is the catenary power supply module;
if not, judging that the initial power source is not the catenary power supply module.
In one aspect, switching the power source to meet a preset power supply condition includes:
judging whether the output voltage of the switching power source is equal to a preset power supply voltage or not;
if yes, judging that the switching power source meets the preset power supply condition.
In one aspect, when the initial power source is the catenary power supply module, disconnecting the initial power source of the hybrid power locomotive from the hybrid power locomotive includes:
controlling a pantograph in the overhead line system power supply module to descend;
and controlling the conduction between the input end and the first output end of the controllable switch module.
On the other hand, when the initial power source is the diesel engine power supply module, disconnecting the initial power source of the hybrid power locomotive from the hybrid power locomotive includes:
controlling the disconnection between the input end and the second output end of the controllable switch module;
before controlling the conduction between the input terminal and the second output terminal of the controllable switch module, the method further comprises:
and controlling the disconnection between the input end and the first output end of the controllable switch module.
In one aspect, the controllable switch module includes:
the first fixed contact of the change-over switch is respectively connected with the second fixed contact of the change-over switch and the diesel engine power supply module, the first movable contact of the change-over switch is respectively connected with the contact net power supply module and the input end of the rectifying module, and the second movable contact of the controllable switch module is connected with the input end of the controllable rectifying module.
In one aspect, the diesel engine power supply module further includes:
and the preheating module is connected with the power supply end of the overhead line system power supply module and is used for preheating a diesel engine in the diesel engine power supply module through the overhead line system power supply module when the initial power source is in the overhead line system power supply module before receiving the power source switching instruction.
The invention also provides a power supply system of the hybrid power locomotive, which is applied to the hybrid power locomotive and comprises:
the processor is connected with the control end of the controllable switch module and is used for executing the steps of the control method of the hybrid power locomotive;
the input end of the controllable switch module is connected with the diesel engine power supply module, the first output end of the controllable switch module is respectively connected with the input ends of the contact net power supply module and the rectifying module, and the second output end of the controllable switch module is connected with the input end of the controllable rectifying module;
the diesel engine power supply module;
the overhead contact system power supply module;
the output end of the controllable rectifying module is respectively connected with the output end of the rectifying module and the input end of the middle direct current circuit;
the rectifying module;
the intermediate direct current circuit.
The present invention also provides a computer readable storage medium having stored thereon a computer program which when executed by a processor implements the steps of the method for booting an encrypted hard disk as described above.
The invention provides a control method and related components of a hybrid power locomotive, wherein the second voltage output by a controllable rectifying module is regulated through the rectifying module, namely, the voltage input to an intermediate direct-current circuit by a diesel engine power supply module is regulated, namely, the pressure difference between the voltage generated by a contact net and the voltage generated by two power sources of a diesel engine is eliminated, so that the two power sources can supply power to the hybrid power locomotive at the same time; meanwhile, the connection mode of the diesel engine power supply module and the middle direct current circuit is controlled by the connection and disconnection between the input end of the controllable switch module and the first output end and the second output end, namely, the connection relation between the diesel engine power supply module and the auxiliary load and the traction system of the hybrid power locomotive is controlled, namely, the control of the controllable switch module is controlled to switch the power source, and the seamless switching can be realized without losing power supply in the power source switching process.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the prior art and the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a conventional power supply system for a hybrid locomotive;
FIG. 2 is a flow chart of a method for controlling a hybrid locomotive according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a power supply system of a hybrid locomotive according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a power supply system of another hybrid locomotive according to an embodiment of the present invention.
Detailed Description
The core of the invention is to provide a control method and related components of a hybrid power locomotive, which eliminates the pressure difference between the voltages generated by two power sources of a contact net and a diesel engine, so that the two power sources can supply power to the hybrid power locomotive at the same time, the control of power source switching is realized by controlling a controllable switch module, the power supply is not lost in the process of power source switching, and seamless switching can be realized.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 2, fig. 2 is a flowchart of a control method of a hybrid locomotive provided by an embodiment of the present invention, and is applied to a processor of a power supply system of the hybrid locomotive, referring to fig. 3, fig. 3 is a schematic structural diagram of the power supply system of the hybrid locomotive provided by the embodiment of the present invention, the power supply system further includes a controllable switch module 201 and a controllable rectifying module 202, an input end of the controllable switch module 201 is connected to a diesel engine power supply module 102, a first output end of the controllable switch module 201 is connected to an input end of a catenary power supply module 101 and a rectifying module 103, a second output end of the controllable switch module 201 is connected to an input end of the controllable rectifying module 202, and an output end of the controllable rectifying module 202 is connected to an output end of the rectifying module 103 and an input end of an intermediate dc circuit 104, and the control method includes:
s21: when a power source switching instruction is received, the input end and the second output end of the controllable switch module 201 are controlled to be conducted, so that the diesel engine power supply module 102 is connected with the input end of the controllable rectifying module 202;
s22: according to the first voltage at the output end of the rectifying module 103, the second voltage output by the controllable rectifying module 202 is regulated so that the voltage difference between the first voltage and the second voltage is within a preset rated safety voltage difference range;
s23: when the switching power source meets the preset power supply condition, the connection between the initial power source of the hybrid power locomotive and the hybrid power locomotive is disconnected, wherein the initial power source is the power source of the hybrid power locomotive before the switching power source is received, and the switching power source is the power source which is different from the initial power source in the double power sources.
In a specific embodiment, when the hybrid power locomotive needs to be switched from diesel power supply to overhead line system power supply or from overhead line system power supply to diesel power supply, a power source switching instruction is issued to a processor of a power supply system of the hybrid power locomotive, and at this time, the controllable switch module 201 is controlled to change states, so that the diesel power supply module 102 is connected with an input end of the controllable rectifier module 202 through an input end and a second output end of the controllable switch module 201; when the controllable rectifying module 202 receives the input voltage, the controllable rectifying module 202 adjusts the second voltage output by itself according to the first voltage at the output end of the rectifying module 103, namely, the voltage provided by the diesel engine power supply module 102 and the contact net power supply module 101 for the hybrid power locomotive is within a preset rated safety voltage difference range through the controllable rectifying module 202, wherein the preset rated safety voltage difference range refers to the voltage difference of the fault problems such as power source burnout caused by short circuit when the contact net and the diesel engine supply power to the hybrid power locomotive at the same time; when the two power sources can be used for stabilizing the electric energy provided by the hybrid power locomotive, the connection between the initial power source of the hybrid power locomotive and the hybrid power locomotive is disconnected, namely the power is not supplied to the hybrid power locomotive through the initial power source, and the power is supplied to the hybrid power locomotive through the switching power source, namely the switching operation of the power sources is completed.
Further, when the initial power source is the catenary power supply module 101, the manner of disconnecting the initial power source of the hybrid power locomotive from the hybrid power locomotive may be to control the pantograph to drop, or may also be to control a breaker in the catenary power supply module 101 to disconnect; when the initial power source is the diesel engine power supply module 102, the mode of disconnecting the initial power source of the hybrid power locomotive from the hybrid power locomotive may be to control the diesel engine to stop working, or may also be to control the disconnection between the input end and the second output end of the controllable switch module 201, that is, disconnect the diesel engine power supply module 102 from the rectifying module 103 through the controllable switch module 201, that is, disconnect the diesel engine power supply module 102 from the auxiliary load 105 from the traction inverter 106.
The specific method for switching the power source to meet the preset power supply condition may be to judge through voltage, or may be to consider that the preset power supply condition is met after the running time of the switching power source reaches the preset time length, or may be other judging methods, which is not limited specifically, so long as the state of the switching power source can be judged.
The embodiment is not limited to a specific structure of the controllable switch module 201, for example, two contactors controlled by a processor may be used, where a first end of the first contactor is connected to a first end of the second contactor and the input end of the diesel engine power supply module 102, and a second end of the first contactor is connected to the input ends of the catenary power supply module 101 and the rectifying module 103, respectively, and a second end of the second contactor is connected to the input end of the controllable rectifying module 202, or may be a change-over switch, where a first stationary contact of the change-over switch is connected to a second stationary contact of the change-over switch and the diesel engine power supply module 102, and a first movable contact of the change-over switch is connected to the input ends of the catenary power supply module 101 and the rectifying module 103, respectively, or may be other structures, as long as it is possible to implement the control by the processor and change the connection relationship between the diesel engine power supply module 102 and the controllable rectifying module 202 and the rectifying module 103, and the connection relationship may be selected by a person skilled in the art according to practical situations.
It should be noted that, in some embodiments, the controllable rectifying module 202 includes a controllable rectifier, where the power of the controllable rectifier is equal to the power of the auxiliary load 105, that is, the controllable rectifier is only equal to a small load of the power source, and does not cause a large disturbance to the entire power supply system.
The invention provides a control method and related components of a hybrid power locomotive, wherein the second voltage output by a controllable rectifying module 202 is regulated through a rectifying module 103, namely, the voltage input by a diesel engine power supply module 102 to an intermediate direct current circuit 104 is regulated, namely, the pressure difference between the voltages generated by a contact net and two power sources of a diesel engine is eliminated, so that the two power sources can supply power to the hybrid power locomotive at the same time; meanwhile, the connection mode of the diesel engine power supply module 102 and the middle direct current circuit 104 is controlled by the connection and disconnection between the input end and the first output end and the second output end of the controllable switch module 201, namely, the connection relation between the diesel engine power supply module 102 and the auxiliary load 105 and the traction system of the hybrid locomotive is controlled, namely, the control of the controllable switch module 201 is used for controlling the power source switching, and the seamless switching can be realized without losing power supply in the power source switching process.
Based on the above embodiments:
in some embodiments, before controlling the conduction between the input terminal and the second output terminal of the controllable switch module 201, further comprises:
judging whether the initial power source is a catenary power supply module 101;
if not, the pantograph in the catenary power supply module 101 is controlled to rise so that the hybrid locomotive receives current from the catenary in the catenary power supply module 101 through the pantograph.
In a specific embodiment, when the power source is controlled to switch according to the power source switching instruction, the type of the initial power source is determined, on one hand, when the initial power source of the hybrid power locomotive is the overhead line power supply module 101, after receiving the power source switching instruction, the diesel engine in the diesel engine power supply module 102 is controlled to start, that is, the diesel engine power supply module 102 is controlled to start providing electric energy, and when the initial power source of the hybrid power locomotive is the diesel engine power supply module 102, a pantograph in the overhead line power supply module 101 is required to be lifted, so that the hybrid power locomotive receives current from the overhead line in the overhead line power supply module 101 through the pantograph; on the other hand, whether the power source switching command is effective can be judged according to the type of the initial power source, for example, when the command input by the operator is to switch from the overhead line system to the diesel engine for power supply, but when the initial power source is the diesel engine power supply module 102, whether the initial power source and the power source switching command can be corresponding can be judged according to the judgment of the initial power source, so as to judge whether the command input by the operator is reasonable.
The embodiment is not limited to a specific method for determining whether the initial power source is the catenary power supply module 101, for example, the determination may be performed according to the situation of the pantograph, or the determination may be performed according to the operation situation of the diesel engine, or a voltage detection module may be provided at a position where the catenary power supply module 101 and the diesel engine power supply module 102 output electric energy outwards, and the initial power source may be determined by detecting the voltage, or may be other ways, which should be determined by a person skilled in the art according to the actual situation.
In this embodiment, before the input end and the second output end of the controllable switch module 201 are controlled to be conducted, the type of the initial power source is further determined and detected, so that the control accuracy is improved, meanwhile, the full-automatic conversion of one-key braking force source is realized, the condition that an operator pays attention to the power source is not needed, the convenience and the rapidness are realized, and the efficiency is improved.
In some embodiments, determining whether the initial power source is the catenary power module 101 includes:
judging whether the pantograph is connected with the contact net or not;
if yes, the initial power source is judged to be the contact net power supply module 101;
if not, the initial power source is judged not to be the catenary power supply module 101.
In the embodiment, whether the initial power source is the catenary power supply module 101 is judged according to the state of the pantograph, the judgment result is accurate, and other equipment or devices are not needed to be added, so that the cost is reduced.
In some embodiments, switching the power source to meet a preset power supply condition includes:
judging whether the output voltage of the switching power source is equal to a preset power supply voltage or not;
if yes, judging that the switching power source meets the preset power supply condition.
According to the embodiment, whether the switching power source meets the preset power supply condition is judged through the output voltage of the switching power source, namely, when the output voltage of the switching power source can supply power to the hybrid power locomotive and the voltage is stable, the switching power source is judged to meet the preset power supply condition, and the power supply stability of a power supply system is ensured.
In some embodiments, when the initial power source is the catenary power module 101, disconnecting the initial power source of the hybrid locomotive from the hybrid locomotive includes:
controlling the pantograph in the catenary power supply module 101 to descend;
the conduction between the input and the first output of the controllable switch module 201 is controlled.
According to the embodiment, the pantograph is controlled to descend, so that the connection between the contact network power supply module 101 and the hybrid power locomotive is disconnected, additional equipment or devices are not required to be installed, the cost is reduced, and meanwhile, the stability is better.
In some embodiments, disconnecting the initial power source of the hybrid locomotive from the hybrid locomotive when the initial power source is the diesel power module 102 comprises:
the input end and the second output end of the controllable switch module 201 are controlled to be disconnected;
before controlling the conduction between the input terminal and the second output terminal of the controllable switch module 201, further comprises:
the controllable switch module 201 is controlled to be disconnected between its input and its first output.
The connection and disconnection of the diesel engine power supply module 102 and the hybrid locomotive are realized by controlling the on-off of the controllable switch module 201, and meanwhile, the control of power source conversion is also realized, so that the method is convenient and quick.
In some embodiments, referring to fig. 4, fig. 4 is a schematic structural diagram of a power supply system of another hybrid locomotive according to an embodiment of the present invention, and a controllable switch module 201 includes:
the first fixed contact of the change-over switch 4 is respectively connected with the second fixed contact of the change-over switch 4 and the diesel engine power supply module 102, the first movable contact of the change-over switch 4 is respectively connected with the input ends of the contact net power supply module 101 and the rectifying module 103, and the second movable contact of the controllable switch module 201 is connected with the input end of the controllable rectifying module 202.
In a specific embodiment, the catenary power supply module 101 includes a pantograph 5 that contacts the power grid 1 and a transformer 2 that converts a high voltage obtained from the power grid 1 by the pantograph 5 into a suitable voltage, the diesel engine power supply module 102 includes a diesel engine set 6, the rectifying module 103 includes a four-quadrant module 3, the controllable rectifying module 202 includes a controllable rectifier 7, the change-over switch 4 includes a first controllable switch K1 and a second controllable switch K2, and the first controllable switch K1 and a stationary contact of the second controllable switch K2 are connected.
The function of the controllable switch module 201 is realized through the change-over switch 4, and the change-over switch 4 has the advantages of small volume, reliable performance, convenient operation and flexible installation, so that the control on the power source change-over is more convenient and quicker.
In some embodiments, the diesel power module 102 further includes:
and the preheating module is connected with the overhead line system power supply module 101 at the power supply end, and is used for preheating a diesel engine in the diesel engine power supply module 102 through the overhead line system power supply module 101 when the initial power source is in the overhead line system power supply module 101 before receiving the power source switching instruction.
In a specific embodiment, cooling water, engine oil and the like in the auxiliary system of the diesel engine need to be preheated before the diesel engine is started, when the initial power source is the catenary power supply module 101, the electric energy generated by the catenary power supply module 101 preheats the diesel engine in the diesel engine power supply module 102, so that the cooling water and the engine oil in the auxiliary system of the diesel engine are kept at the temperature of the diesel engine which allows the diesel engine to be started, but the diesel engine is not started at the moment.
In this embodiment, the preheating module is used for preheating the diesel engine in the diesel engine power supply module 102, that is, when the initial power source is the catenary power supply module 101, the catenary power supply module 101 is used for providing the energy source required by preheating the diesel engine, so as to realize energy conservation and emission reduction, and fully utilize the advantages of the double power sources.
In some embodiments, the hybrid locomotive comprises three modes of a power grid 1 mode, an internal power mode and an internal combustion mode, and the control command issued by an operator controls the hybrid locomotive to enter the corresponding mode.
When the hybrid power locomotive is controlled to enter a power grid 1 mode, a processor of a power supply system of the hybrid power locomotive transmits a lifting signal to a pantograph 5 of the hybrid power locomotive so as to enable the locomotive to take power from the power grid 1, and at the moment, a first controllable switch K1 and a second controllable switch K2 are both in an off state; meanwhile, an operator issues a starting signal of the internal combustion auxiliary system, and the preheating module is powered by the catenary power supply module 101, so that cooling water and engine oil in the auxiliary system of the diesel engine are kept at the temperature of the diesel engine which allows starting, but the diesel engine is not started at the moment; and the hybrid power locomotive can be controlled to enter a traction state, an idle state or a braking state in the power grid 1 mode through the driver controller.
When the hybrid power locomotive is controlled to enter an internal power mode, if the initial power source is the contact net power supply module 101, the diesel engine power supply module 102 is controlled to start; if the initial power source is the diesel engine power supply module 102, the catenary power supply module 101 is controlled to start. At the same time the traction inverter 106 is off, no power is supplied to the traction motor 107, the locomotive enters an idle state and the second controllable switch K2 is controlled to be closed. In this mode, the hybrid locomotive still draws power from the grid 1, but only through the transformer 2, the four-quadrant module 3, and the intermediate dc circuit 104 to power the auxiliary load 105. At the same time, the diesel power module 102 starts and supplies power to the controllable rectifier 7; the controllable rectifier 7 rectifies the power supply to a voltage corresponding to the voltage of the intermediate dc circuit 104 and also supplies the auxiliary load 105. Accordingly, in the internal power mode, the diesel power module 102 and the catenary power module 101 together supply power to the locomotive auxiliary power source.
When the hybrid locomotive is controlled to enter the internal combustion mode, the processor of the power supply system of the hybrid locomotive sends a down-bowing signal to the pantograph 5 of the hybrid locomotive to enable the locomotive to be towed only by the diesel power module 102, and at this time the first controllable switch K1 is closed and the second controllable switch K2 is opened. At this time, the hybrid locomotive can be controlled by the controller to enter a traction state, an idle state or a braking state in the internal combustion mode.
The invention also provides a power supply system of the hybrid power locomotive, which is applied to the hybrid power locomotive and comprises:
a processor connected to the control end of the controllable switch module 201, for executing the steps of the control method of the hybrid locomotive as described above;
the controllable switch module 201, the input end of the controllable switch module 201 is connected with the diesel engine power supply module 102, the first output end of the controllable switch module 201 is respectively connected with the input ends of the contact net power supply module 101 and the rectifying module 103, and the second output end of the controllable switch module 201 is connected with the input end of the controllable rectifying module 202;
a diesel power module 102;
a catenary power supply module 101;
the output end of the controllable rectifying module 202 is respectively connected with the output end of the rectifying module 103 and the input end of the intermediate direct current circuit 104;
a rectifying module 103;
an intermediate dc circuit 104.
The invention also provides a computer readable storage medium, the target computer readable storage medium stores a computer program, and the target computer program realizes the steps of the starting method of the encrypted hard disk when being executed by a processor.
It should also be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The control method of the hybrid power locomotive is characterized by being applied to a processor of a power supply system of the hybrid power locomotive, wherein the power supply system further comprises a controllable switch module and a controllable rectifying module, the input end of the controllable switch module is connected with a diesel engine power supply module, the first output end of the controllable switch module is respectively connected with the input ends of a contact net power supply module and the rectifying module, the second output end of the controllable switch module is connected with the input end of the controllable rectifying module, and the output end of the controllable rectifying module is respectively connected with the output end of the rectifying module and the input end of an intermediate direct current circuit, and the control method comprises the following steps:
when a power source switching instruction is received, the conduction between the input end and the second output end of the controllable switch module is controlled, so that the diesel engine power supply module is connected with the input end of the controllable rectifying module;
according to the first voltage of the output end of the rectifying module, regulating the second voltage output by the controllable rectifying module so that the voltage difference between the first voltage and the second voltage is within a preset rated safety voltage difference range;
when the switching power source meets the preset power supply condition, the connection between the initial power source of the hybrid power locomotive and the hybrid power locomotive is disconnected, wherein the initial power source is the power source of the hybrid power locomotive before the switching power source switching instruction is received, and the switching power source is the power source which is different from the initial power source in the double power sources.
2. The method of controlling a hybrid locomotive as claimed in claim 1, further comprising, prior to controlling conduction between the input and the second output of the controllable switch module:
judging whether the initial power source is the catenary power supply module or not;
and if not, controlling the pantograph in the overhead line system power supply module to rise so that the hybrid locomotive receives current from the overhead line system in the overhead line system power supply module through the pantograph.
3. The control method of a hybrid locomotive as claimed in claim 2, wherein determining whether an initial power source is the catenary power module comprises:
judging whether the pantograph is connected with the contact net or not;
if yes, judging that the initial power source is the catenary power supply module;
if not, judging that the initial power source is not the catenary power supply module.
4. The control method of a hybrid vehicle according to claim 1, wherein switching the power source to satisfy a preset power supply condition includes:
judging whether the output voltage of the switching power source is equal to a preset power supply voltage or not;
if yes, judging that the switching power source meets the preset power supply condition.
5. The control method of a hybrid locomotive as set forth in claim 1, wherein disconnecting the initial power source of the hybrid locomotive from the hybrid locomotive when the initial power source is the catenary power module comprises:
controlling a pantograph in the overhead line system power supply module to descend;
and controlling the conduction between the input end and the first output end of the controllable switch module.
6. The method of controlling a hybrid locomotive as claimed in claim 1, wherein disconnecting the initial power source of the hybrid locomotive from the hybrid locomotive when the initial power source is the diesel power module comprises:
controlling the disconnection between the input end and the second output end of the controllable switch module;
before controlling the conduction between the input terminal and the second output terminal of the controllable switch module, the method further comprises:
and controlling the disconnection between the input end and the first output end of the controllable switch module.
7. The method of controlling a hybrid locomotive as claimed in claim 1, wherein said controllable switch module comprises:
the first fixed contact of the change-over switch is respectively connected with the second fixed contact of the change-over switch and the diesel engine power supply module, the first movable contact of the change-over switch is respectively connected with the contact net power supply module and the input end of the rectifying module, and the second movable contact of the controllable switch module is connected with the input end of the controllable rectifying module.
8. The control method of a hybrid vehicle according to any one of claims 1 to 7, characterized in that the diesel power module further includes:
and the preheating module is connected with the power supply end of the overhead line system power supply module and is used for preheating a diesel engine in the diesel engine power supply module through the overhead line system power supply module when the initial power source is in the overhead line system power supply module before receiving the power source switching instruction.
9. A power supply system for a hybrid locomotive, comprising:
a processor connected to the control terminal of the controllable switch module for performing the steps of the control method of the hybrid locomotive according to any one of claims 1 to 8;
the input end of the controllable switch module is connected with the diesel engine power supply module, the first output end of the controllable switch module is respectively connected with the input ends of the contact net power supply module and the rectifying module, and the second output end of the controllable switch module is connected with the input end of the controllable rectifying module;
the diesel engine power supply module;
the overhead contact system power supply module;
the output end of the controllable rectifying module is respectively connected with the output end of the rectifying module and the input end of the middle direct current circuit;
the rectifying module;
the intermediate direct current circuit.
10. A computer readable storage medium, wherein a computer program is stored on the target computer readable storage medium, which when executed by a processor, implements the steps of the method for booting an encrypted hard disk according to any one of claims 1 to 8.
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