Marshalling locomotive auxiliary power through circuit and control method

Abstract

The application discloses a marshalling locomotive auxiliary power through circuit and a control method. The through circuit comprises a first contactor, a second contactor, a third contactor, a fourth contactor, a fifth contactor and a sixth contactor arranged on an electric locomotive, and a seventh contactor and an eighth contactor arranged on a power pack locomotive. The switching states of the first contactor, the second contactor, the third contactor, the fourth contactor, the fifth contactor, the sixth contactor, the seventh contactor and the eighth contactor are controlled according to a power supply mode of the marshalling locomotive. The power supply mode comprises a hybrid power supply mode, an electric power supply mode and a power pack power supply mode. The auxiliary power through circuit of the application realizes the through control of the auxiliary power of the electric locomotive and the power pack locomotive, ensures the power supply demand of the auxiliary load of the electric locomotive and the power pack locomotive, and improves the operation compatibility of the marshalling locomotive on the electrified line and the non-electrified line.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of track locomotive power supply technology, and particularly relates to a marshalling locomotive auxiliary power through circuit and control method. BACKGROUND

[0002] In the track traffic operation mode, the locomotive marshalling generally adopts the form of electric locomotive directly pulling diesel locomotive or battery locomotive. The locomotive in this marshalling form is a new type of locomotive formed by electric locomotive + power pack locomotive through internal heavy coupling, wherein the electric locomotive is provided with traction, auxiliary and line power supply by the pantograph through the AC 25kV catenary; the power supply system of the power pack locomotive is powered by internal combustion engine or energy storage device such as traction battery.

[0003] However, when the marshalling locomotive needs to run on electrified railway and non-electrified railway, the original marshalling and single traction mode cannot meet the operation demand. SUMMARY

[0004] The purpose of the present application is to provide a marshalling locomotive auxiliary power through circuit and control method, so as to solve the problem that the locomotive formed by electric locomotive + power pack locomotive marshalling only adopts the mode of electric locomotive directly pulling power pack locomotive, which cannot meet the operation demand of the marshalling locomotive on some lines.

[0005] The present application solves the above technical problems by the following technical scheme: a marshalling locomotive auxiliary power through circuit, the marshalling locomotive comprising an electric locomotive and a power pack locomotive; the through circuit comprising a first contactor, a second contactor, a third contactor, a fourth contactor and a fifth contactor arranged on the electric locomotive, and a seventh contactor and an eighth contactor arranged on the power pack locomotive;

[0006] The first end of the first contactor, the second end of the third contactor and the first end of the fifth contactor are connected with the auxiliary power supply of the electric locomotive, the second end of the first contactor is connected with the second end of the second contactor and the crew load of the electric locomotive, the first end of the third contactor is connected with the air compressor of the electric locomotive and the second end of the fourth contactor, the second end of the fifth contactor is connected with the running load of the electric locomotive, and the first end of the fourth contactor and the first end of the second contactor are connected with the heavy coupling connector;

[0007] The first end of the seventh contactor is connected with the second end of the eighth contactor, the crew load of the power pack locomotive and the heavy coupling connector, the second end of the seventh contactor is connected with the auxiliary power supply of the power pack locomotive, and the first end of the eighth contactor is connected with the air compressor of the power pack locomotive;

[0008] The switch states of the first contactor, the second contactor, the third contactor, the fourth contactor, the fifth contactor, the seventh contactor and the eighth contactor are controlled according to a power supply mode of the marshalling locomotive; wherein the power supply mode includes a hybrid power supply mode, a power supply mode and a power pack power supply mode.

[0009] Further, a mode conversion switch connected with the network control systems of the electric locomotive and the power pack locomotive is arranged in the cab of the marshalling locomotive; the mode conversion switch is used to generate a power supply mode signal.

[0010] Further, the network control system of the electric locomotive is connected with the network control system of the power pack locomotive through a WTB line; the network control system of the electric locomotive controls the switch states of the first contactor, the second contactor, the third contactor, the fourth contactor and the fifth contactor according to the power supply mode of the marshalling locomotive.

[0011] The network control system of the power pack locomotive controls the switch states of the seventh contactor and the eighth contactor according to the power supply mode of the marshalling locomotive.

[0012] Further, the through circuit further comprises a sixth contactor arranged on the electric locomotive, a first end of the sixth contactor is connected with the second end of the first contactor and the second end of the second contactor, and a second end of the sixth contactor is connected with a running load of the electric locomotive.

[0013] Further, a first circuit breaker is arranged between the second end of the third contactor and an auxiliary power supply of the electric locomotive; and a second circuit breaker is arranged between the first end of the eighth contactor and an air compressor of the power pack locomotive.

[0014] Further, the power pack locomotive is an internal combustion locomotive or a battery locomotive.

[0015] Based on the same concept, the application provides a control method of the auxiliary power supply through circuit of the marshalling locomotive as described above, comprising:

[0016] obtaining a power supply mode signal of the marshalling locomotive;

[0017] controlling the switch states of the first contactor, the second contactor, the third contactor, the fourth contactor, the fifth contactor, the seventh contactor and the eighth contactor according to the power supply mode signal, so that the marshalling locomotive is powered in a power supply mode corresponding to the power supply mode signal.

[0018] Further, controlling the switch states of the first contactor, the second contactor, the third contactor, the fourth contactor, the fifth contactor, the sixth contactor, the seventh contactor and the eighth contactor according to the power supply mode signal comprises:

[0019] When the power supply mode signal is the power supply mode signal, the network control system of the electric locomotive controls the first contactor, the second contactor, the third contactor and the fifth contactor to be closed, and controls the fourth contactor to be opened; the network control system of the power pack locomotive controls the eighth contactor to be closed, and controls the seventh contactor to be opened;

[0020] When the power supply mode signal is the power supply mode signal, the network control system of the electric locomotive controls the first contactor, the second contactor, the third contactor and the fifth contactor to be closed, and controls the fourth contactor to be opened; the network control system of the power pack locomotive controls the eighth contactor to be closed, and controls the seventh contactor to be opened;

[0021] When the power supply mode signal is the power supply mode signal, the network control system of the electric locomotive controls the first contactor, the second contactor, the third contactor and the fifth contactor to be closed, and controls the fourth contactor to be opened; the network control system of the power pack locomotive controls the eighth contactor to be closed, and controls the seventh contactor to be opened;

[0022] When the power supply mode signal is the power supply mode signal, the network control system of the electric locomotive controls the first contactor, the second contactor, the third contactor and the fifth contactor to be closed, and controls the fourth contactor to be opened; the network control system of the power pack locomotive controls the eighth contactor to be closed, and controls the seventh contactor to be opened;

[0023] Further, the network control system of the electric locomotive controls the first contactor, the second contactor, the third contactor, the fourth contactor and the fifth contactor according to the hybrid type signal, and the network control system of the power pack locomotive controls the seventh contactor and the eighth contactor according to the hybrid type signal, comprising:

[0024] When the power supply mode signal is the power supply mode signal, the network control system of the electric locomotive controls the first contactor, the second contactor, the third contactor and the fifth contactor to be closed, and controls the fourth contactor to be opened; the network control system of the power pack locomotive controls the eighth contactor to be closed, and controls the seventh contactor to be opened;

[0025] When the power supply mode signal is the power supply mode signal, the network control system of the electric locomotive controls the first contactor, the second contactor, the third contactor and the fifth contactor to be closed, and controls the fourth contactor to be opened; the network control system of the power pack locomotive controls the eighth contactor to be closed, and controls the seventh contactor to be opened;

[0026] When the power supply mode signal is a hybrid power supply mode signal and the hybrid type signal is a power pack auxiliary power signal, the network control system of the electric locomotive controls the second contactor and the fourth contactor to be closed, and controls the first contactor, the third contactor and the fifth contactor to be opened; the network control system of the power pack locomotive controls the seventh contactor and the eighth contactor to be closed.

[0027] Further, when the fifth contactor fails and needs to be controlled to be closed, the network control system of the electric locomotive controls the sixth contactor to be closed.

[0028] Advantages

[0029] Compared with the prior art, the advantages of the present application are that:

[0030] The auxiliary power supply through circuit of the present application realizes the through control of the auxiliary power supply of the electric locomotive and the power pack locomotive, ensures the power supply demand of the auxiliary load of the electric locomotive and the power pack locomotive, and improves the operation compatibility of the marshalling locomotive on the electrified line and the non-electrified line. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the present application, the drawings needed in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are only one embodiment of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0032] Figure 1 is the schematic diagram of the auxiliary power supply through circuit of the marshalling locomotive in the embodiment of the present application. DETAILED DESCRIPTION

[0033] The technical solutions in the present application will be described clearly and completely in the following with reference to the drawings in the embodiment of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0034] The technical solutions of the present application will be described in detail in the following with specific embodiments. The following specific embodiments can be combined with each other, and some embodiments may not be described again for the same or similar concepts or processes.

[0035] The marshalling locomotive is composed of an electric locomotive and a power pack locomotive, the power pack locomotive is an internal combustion locomotive or a battery locomotive, wherein the electric locomotive refers to a locomotive that obtains electric energy from a power supply network or a power supply rail and drives to travel through an electric motor; the internal combustion locomotive refers to a locomotive that takes an internal combustion engine as a prime mover; and the battery locomotive refers to a locomotive that takes a battery pack as a power source.

[0036] The crew load refers to auxiliary equipment required by a crew member in a vehicle environment, such as an air conditioner, a heater, and window heating equipment; the running load refers to auxiliary equipment required for normal running, such as a converter water pump and a converter fan; the power supply mode includes a hybrid power supply mode, an electric power supply mode, and a power pack power supply mode; and the hybrid type in the hybrid power supply mode includes an independent auxiliary power supply mode, an electric auxiliary power supply mode, and a power pack auxiliary power supply mode.

[0037] The electric power supply mode refers to a mode in which the auxiliary power supply of the electric locomotive supplies power to the crew load, the running load, and the air compressor of the electric locomotive, and the crew load and the air compressor of the power pack locomotive;

[0038] The power pack power supply mode refers to a mode in which the auxiliary power supply of the power pack locomotive supplies power to the crew load and the air compressor of the electric locomotive, and the crew load and the air compressor of the power pack locomotive;

[0039] The independent auxiliary power supply mode refers to a mode in which the auxiliary power supply of the electric locomotive supplies power to the crew load, the running load, and the air compressor of the electric locomotive, and the auxiliary power supply of the power pack locomotive supplies power to the crew load and the air compressor of the power pack locomotive, and the power supply of the electric locomotive and the power supply of the power pack locomotive are independent of each other;

[0040] The electric auxiliary power supply mode refers to a mode in which the auxiliary power supply of the electric locomotive supplies power to the crew load and the air compressor of the power pack locomotive when the diesel engine is not started or the power storage battery has a power lower than a minimum power, and the switch state of each contactor in the electric auxiliary power supply mode is the same as the switch state of each contactor in the electric power supply mode;

[0041] The power pack auxiliary power supply mode refers to a mode in which the auxiliary power supply of the power pack locomotive supplies power to the crew load and the air compressor of the electric locomotive when the auxiliary inverter of the electric locomotive is faulty or the output contactor of the auxiliary inverter is stuck, and the switch state of each contactor in the power pack auxiliary power supply mode is the same as the switch state of each contactor in the power pack power supply mode.

[0042] Embodiment 1

[0043] As Figure 1As shown, the through circuit of the auxiliary power supply of the marshalling locomotive provided by the embodiment of the present application comprises a first contactor KM1, a second contactor KM2, a third contactor KM3, a fourth contactor KM4, and a fifth contactor KM5 arranged on the electric locomotive, and a seventh contactor KM7 and an eighth contactor KM8 arranged on the power pack locomotive; the first end of the first contactor KM1, the second end of the third contactor KM3, and the first end of the fifth contactor KM5 are all connected with the auxiliary power supply of the electric locomotive, the second end of the first contactor KM1 is connected with the second end of the second contactor KM2 and the crew load of the electric locomotive, the first end of the third contactor KM3 is connected with the air compressor of the electric locomotive and the second end of the fourth contactor KM4, the second end of the fifth contactor KM5 is connected with the running load of the electric locomotive, the first end of the fourth contactor KM4 and the first end of the second contactor KM2 are both connected with the reconnection connector LZ; the first end of the seventh contactor KM7 is connected with the second end of the eighth contactor KM8, the crew load of the power pack locomotive, and the reconnection connector LZ, the second end of the seventh contactor KM7 is connected with the auxiliary power supply of the power pack locomotive, and the first end of the eighth contactor KM8 is connected with the air compressor of the power pack locomotive.

[0044] The switch states of the first contactor KM1, the second contactor KM2, the third contactor KM3, the fourth contactor KM4, the fifth contactor KM5, the seventh contactor KM7, and the eighth contactor KM8 are controlled according to the power supply mode of the marshalling locomotive. In the specific embodiment of the present application, the power supply mode includes a hybrid power supply mode, an electric power supply mode, and a power pack power supply mode; the hybrid power supply mode further includes an independent auxiliary power supply mode, an electric auxiliary power supply mode, and a power pack auxiliary power supply mode.

[0045] The mode conversion switch is arranged in the driver's room of the electric locomotive and the driver's room of the power pack locomotive, and the mode conversion switch of each driver's room is connected with the network control system of the corresponding locomotive, i.e. the mode conversion switch of the driver's room of the electric locomotive is connected with the network control system of the electric locomotive, and the mode conversion switch of the driver's room of the power pack locomotive is connected with the network control system of the power pack locomotive; the network control system of the electric locomotive is connected with the network control system of the power pack locomotive through the WTB line, so that the power supply mode signal generated by the mode conversion switch penetrates through the entire locomotive. The mode conversion switch has three positions, i.e. an "electric" position, a "power pack" position, and a "hybrid" position; when the mode conversion switch is rotated to the "electric" position, an electric power supply mode signal is generated, corresponding to the electric power supply mode of the marshalling locomotive; when the mode conversion switch is rotated to the "power pack" position, a power pack power supply mode signal is generated, corresponding to the power pack power supply mode of the marshalling locomotive; when the mode conversion switch is rotated to the "hybrid" position, a hybrid power supply mode signal is generated, corresponding to the hybrid power supply mode of the marshalling locomotive.

[0046] In addition, a hybrid type selection interface is provided on the DDU (i.e., the driver's driving display unit) in the driver's cab. A hybrid type signal is generated by operating the selection interface. The hybrid type signal includes an independent auxiliary power supply signal, an electric auxiliary power supply signal, and a power pack auxiliary power supply signal. The selection interface includes "independent auxiliary power supply," "electric auxiliary power supply," and "power pack auxiliary power supply" checkboxes. The system defaults to "independent auxiliary power supply," that is, the "independent auxiliary power supply" mode is restored after the system is powered on again. When the mode conversion switch is in the "hybrid" position and "independent auxiliary power supply" is selected through the DDU, an independent auxiliary power supply signal is generated, corresponding to the independent auxiliary power supply mode of the marshalling locomotive; when the mode conversion switch is in the "hybrid" position and "electric auxiliary power supply" is selected through the DDU, an electric auxiliary power supply signal is generated, corresponding to the electric auxiliary power supply mode of the marshalling locomotive; when the mode conversion switch is in the "hybrid" position and "power pack auxiliary power supply" is selected through the DDU, a power pack auxiliary power supply signal is generated, corresponding to the power pack auxiliary power supply mode of the marshalling locomotive.

[0047] By controlling the switch states of the first contactor KM1, the second contactor KM2, the third contactor KM3, the fourth contactor KM4, the fifth contactor KM5, the seventh contactor KM7, and the eighth contactor KM8 according to the different power supply modes of the marshalling locomotive, different through-control functions of the auxiliary system under different power supply modes can be realized. For example, when the electric locomotive supplies power to the auxiliary system of the power charter locomotive, it is achieved by closing the second contactor KM2 and the eighth contactor KM8; when the power charter locomotive supplies power to the auxiliary system of the electric locomotive, it is achieved by closing the seventh contactor KM7, the second contactor KM2, and the fourth contactor KM4. In a specific embodiment of the present invention, the network control system of the electric locomotive controls the switch states of the first contactor KM1, the second contactor KM2, the third contactor KM3, the fourth contactor KM4, and the fifth contactor KM5 according to the different power supply modes of the marshalling locomotive, and the network control system of the power charter locomotive controls the switch states of the seventh contactor KM7 and the eighth contactor KM8 according to the different power supply modes of the marshalling locomotive, specifically including:

[0048] When the mode conversion switch is in the "power" position, that is, the power supply mode signal is the electric power supply mode signal, the network control system of the electric locomotive controls the first contactor KM1, the second contactor KM2, the third contactor KM3 (when the air compressor needs to be ventilated, the third contactor KM3 is closed; when the air compressor does not need to be ventilated, the third contactor KM3 is disconnected) and the fifth contactor KM5 to close, and controls the fourth contactor KM4 to be disconnected; the network control system of the power charter locomotive controls the eighth contactor KM8 (when the air compressor needs to be ventilated, the eighth contactor KM8 is closed; when the air compressor does not need to be ventilated, the eighth contactor KM8 is disconnected) to close, and controls the seventh contactor KM7 to be disconnected, and the auxiliary power supply of the electric locomotive supplies power to the air compressor and driver and passenger loads of the power charter locomotive;

[0049] When the mode switch is in the "power pack" position, i.e., the power supply mode signal is a power pack power supply mode signal, the network control system of the electric locomotive controls the second contactor KM2 and the fourth contactor KM4 (the fourth contactor KM4 is closed when the air compressor needs to be blown, and the fourth contactor KM4 is opened when the air compressor does not need to be blown) to be closed, and controls the first contactor KM1, the third contactor KM3 and the fifth contactor KM5 to be opened; the network control system of the power pack locomotive controls the seventh contactor KM7 and the eighth contactor KM8 (the eighth contactor KM8 is closed when the air compressor needs to be blown, and the eighth contactor KM8 is opened when the air compressor does not need to be blown) to be closed, and the auxiliary power supply of the power pack locomotive supplies power to the air compressor and the crew load of the electric locomotive;

[0050] When the mode switch is in the "hybrid" position, i.e., the power supply mode signal is a hybrid power supply mode signal, a hybrid type signal generated by the DDU is obtained, and the network control system of the electric locomotive controls the switching state of the first contactor KM1, the second contactor KM2, the third contactor KM3, the fourth contactor KM4 and the fifth contactor KM5 according to the hybrid type signal, and the network control system of the power pack locomotive controls the switching state of the seventh contactor KM7 and the eighth contactor KM8 according to the hybrid type signal.

[0051] In the specific embodiment of the present application, the network control system of the electric locomotive controls the switching state of the first contactor KM1, the second contactor KM2, the third contactor KM3, the fourth contactor KM4 and the fifth contactor KM5 according to the hybrid type signal, and the network control system of the power pack locomotive controls the switching state of the seventh contactor KM7 and the eighth contactor KM8 according to the hybrid type signal, which includes:

[0052] When the mode switch is in the "hybrid" position and the "independent auxiliary power supply" box of the DDU is selected, the network control system of the electric locomotive controls the first contactor KM1, the third contactor KM3 and the fifth contactor KM5 to be closed, and controls the second contactor KM2 and the fourth contactor KM4 to be opened, so that the auxiliary power supply of the electric locomotive supplies power to the air compressor, the crew load and the running load of the electric locomotive; the network control system of the power pack locomotive controls the seventh contactor KM7 and the eighth contactor KM8 to be closed, so that the auxiliary power supply of the power pack locomotive supplies power to the air compressor and the crew load of the power pack locomotive, i.e., the electric locomotive and the power pack locomotive are independently powered (i.e., not through) ;

[0053] When the mode switch is in the "hybrid" position and the "power car auxiliary power supply" box of the DDU is checked, the network control system of the electric locomotive controls the first contactor KM1, the second contactor KM2, the third contactor KM3 and the fifth contactor KM5 to be closed, and controls the fourth contactor KM4 to be opened; the network control system of the power pack locomotive controls the eighth contactor KM8 to be closed, and controls the seventh contactor KM7 to be opened, so that the auxiliary power supply of the electric locomotive supplies power to the air compressor and the crew load of the power pack locomotive, that is, the switch state of the contactors is the same as that in the electric power supply mode.

[0054] When the mode switch is in the "hybrid" position and the "power car auxiliary power supply" box of the DDU is checked, the network control system of the electric locomotive controls the first contactor KM1, the second contactor KM2, the third contactor KM3 and the fifth contactor KM5 to be closed, and controls the fourth contactor KM4 to be opened; the network control system of the power pack locomotive controls the eighth contactor KM8 to be closed, and controls the seventh contactor KM7 to be opened, so that the auxiliary power supply of the electric locomotive supplies power to the air compressor and the crew load of the power pack locomotive, that is, the switch state of the contactors is the same as that in the electric power supply mode.

[0055] In the embodiment, if the power pack locomotive is a diesel locomotive and the diesel engine is not started, the "power car auxiliary power supply" box of the DDU can be checked, so that the auxiliary system of the power pack locomotive is supplied with power by the electric locomotive; if the power pack locomotive is a battery locomotive and the battery has a low power (lower than a set threshold), the "power car auxiliary power supply" box of the DDU can be checked, so that the auxiliary system of the power pack locomotive is supplied with power by the electric locomotive; if the auxiliary inverter of the electric locomotive fails or the output contactor of the auxiliary inverter is stuck, so that the auxiliary power supply of the electric locomotive cannot supply power to the auxiliary load, the "power car auxiliary power supply" box of the DDU can be checked, so that the auxiliary system of the electric locomotive is supplied with power by the power pack locomotive.

[0056] In the specific embodiment of the application, the through circuit further comprises a sixth contactor KM6 arranged on the electric locomotive, a first end of the sixth contactor KM6 is connected with a second end of the first contactor KM1 and a second end of the second contactor KM2, and a second end of the sixth contactor KM6 is connected with the running load of the electric locomotive.

[0057] When the fifth contactor KM5 fails and needs to be controlled to be closed, the network control system of the electric locomotive controls the sixth contactor KM6 to be closed, so that the running load is supplied with power through the sixth contactor KM6.

[0058] In the specific embodiment of the present application, the first circuit breaker Q1 is arranged between the second end of the third contactor KM3 and the auxiliary power supply of the electric locomotive; and the second circuit breaker Q2 is arranged between the first end of the eighth contactor KM8 and the air compressor of the power pack locomotive.

[0059] The through control of the auxiliary power supply of the electric locomotive and the power pack locomotive is realized through the auxiliary power supply through circuit of the present application, thereby realizing the auxiliary power supply through function of the marshalling locomotive in different power supply modes, ensuring the power supply demand of the auxiliary load of the electric locomotive and the power pack locomotive, and improving the operation compatibility of the marshalling locomotive on the electrified line and the non-electrified line. The present application can work in three power supply modes, and each power supply mode can realize the function that the auxiliary load of the electric locomotive and the power pack locomotive work simultaneously.

[0060] Embodiment 2

[0061] The control method of the auxiliary power supply through circuit of the marshalling locomotive provided by the embodiment of the present application includes the following steps:

[0062] Step 1: The network control system of the electric locomotive acquires the power supply mode signal of the marshalling locomotive, and transmits the power supply mode signal to the network control system of the power pack locomotive;

[0063] Step 2: The network control system of the electric locomotive controls the switching state of the first contactor KM1, the second contactor KM2, the third contactor KM3, the fourth contactor KM4 and the fifth contactor KM5 according to the power supply mode signal, and the network control system of the power pack locomotive controls the switching state of the seventh contactor KM7 and the eighth contactor KM8 according to the power supply mode signal, so that the marshalling locomotive is powered in the power supply mode corresponding to the power supply mode signal.

[0064] In the specific embodiment of the present application, the network control system of the electric locomotive controls the switching state of the first contactor KM1, the second contactor KM2, the third contactor KM3, the fourth contactor KM4 and the fifth contactor KM5 according to the power supply mode signal, and the network control system of the power pack locomotive controls the switching state of the seventh contactor KM7 and the eighth contactor KM8 according to the power supply mode signal, specifically including:

[0065] When the power supply mode signal is the power supply mode signal, the network control system of the electric locomotive controls the first contactor KM1, the second contactor KM2, the third contactor KM3 (the third contactor KM3 is closed when the air compressor needs to be blown, and the third contactor KM3 is disconnected when the air compressor does not need to be blown) and the fifth contactor KM5 to be closed, and controls the fourth contactor KM4 to be disconnected; the network control system of the power pack locomotive controls the eighth contactor KM8 (the eighth contactor KM8 is closed when the air compressor needs to be blown, and the eighth contactor KM8 is disconnected when the air compressor does not need to be blown) to be closed, and controls the seventh contactor KM7 to be disconnected, so that the auxiliary power supply of the electric locomotive supplies power to the air compressor and the crew load of the power pack locomotive;

[0066] When the power supply mode signal is the power supply mode signal, the network control system of the electric locomotive controls the first contactor KM1, the second contactor KM2, the third contactor KM3 (the third contactor KM3 is closed when the air compressor needs to be blown, and the third contactor KM3 is disconnected when the air compressor does not need to be blown) and the fifth contactor KM5 to be closed, and controls the fourth contactor KM4 to be disconnected; the network control system of the power pack locomotive controls the seventh contactor KM7 and the eighth contactor KM8 to be closed, so that the auxiliary power supply of the power pack locomotive supplies power to the air compressor and the crew load of the electric locomotive;

[0067] When the power supply mode signal is the hybrid power supply mode signal and the network control systems of the electric locomotive and the power pack locomotive both obtain the hybrid type signal, the network control system of the electric locomotive controls the switching state of the first contactor KM1, the second contactor KM2, the third contactor KM3, the fourth contactor KM4 and the fifth contactor KM5 according to the hybrid type signal, and the network control system of the power pack locomotive controls the switching state of the seventh contactor KM7 and the eighth contactor KM8 according to the hybrid type signal, so that the locomotive is powered in the hybrid power supply mode corresponding to the hybrid type signal; wherein the hybrid type signal includes an independent auxiliary power supply signal, an electric auxiliary power supply signal and a power pack auxiliary power supply signal.

[0068] In the specific embodiments of the present application, the network control system of the electric locomotive controls the switching state of the first contactor KM1, the second contactor KM2, the third contactor KM3, the fourth contactor KM4 and the fifth contactor KM5 according to the hybrid type signal, and the network control system of the power pack locomotive controls the switching state of the seventh contactor KM7 and the eighth contactor KM8 according to the hybrid type signal, including:

[0069] When the power supply mode signal is the hybrid power supply mode signal and the hybrid type signal is the independent auxiliary power supply signal, the network control system of the electric locomotive controls the first contactor KM1, the third contactor KM3 and the fifth contactor KM5 to be closed, controls the second contactor KM2 and the fourth contactor KM4 to be opened, and the auxiliary power supply of the electric locomotive supplies power to the air compressor, the crew load and the running load of the electric locomotive; the network control system of the power pack locomotive controls the seventh contactor KM7 and the eighth contactor KM8 to be closed, and the auxiliary power supply of the power pack locomotive supplies power to the air compressor and the crew load of the power pack locomotive;

[0070] When the power supply mode signal is the hybrid power supply mode signal and the hybrid type signal is the electric auxiliary power supply signal, the network control system of the electric locomotive controls the first contactor KM1, the second contactor KM2, the third contactor KM3 and the fifth contactor KM5 to be closed, controls the fourth contactor KM4 to be opened; the network control system of the power pack locomotive controls the eighth contactor KM8 to be closed, controls the seventh contactor KM7 to be opened, and the auxiliary power supply of the electric locomotive supplies power to the air compressor and the crew load of the power pack locomotive, that is, the contactor switch state of the electric auxiliary power supply mode is the same as that of the electric power supply mode;

[0071] When the power supply mode signal is the hybrid power supply mode signal and the hybrid type signal is the power pack auxiliary power supply signal, the network control system of the electric locomotive controls the second contactor KM2 and the fourth contactor KM4 to be closed, controls the first contactor KM1, the third contactor KM3 and the fifth contactor KM5 to be opened; the network control system of the power pack locomotive controls the seventh contactor KM7 and the eighth contactor KM8 to be closed, and the auxiliary power supply of the power pack locomotive supplies power to the air compressor and the crew load of the electric locomotive, that is, the contactor switch state of the power pack auxiliary power supply mode is the same as that of the power pack power supply mode.

[0072] In the specific embodiment of the present application, when the fifth contactor KM5 fails and needs to be controlled to be closed, the network control system of the electric locomotive controls the sixth contactor KM6 to be closed.

[0073] The above only discloses specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or modifications within the technical range disclosed by the present application, which shall be covered within the protection scope of the present application.

Claims

1. A method for controlling a feed-through circuit of an auxiliary power supply of a marshalling locomotive, wherein the marshalling locomotive includes an electric locomotive and a power charter locomotive; characterized in that: The through circuit includes a first contactor, a second contactor, a third contactor, a fourth contactor and a fifth contactor provided on the electric locomotive, and a seventh contactor and an eighth contactor provided on the power charter locomotive; The first end of the first contactor, the second end of the third contactor, and the first end of the fifth contactor are all connected to the auxiliary power supply of the electric locomotive, the second end of the first contactor is connected to the second end of the second contactor and the driver and passenger load of the electric locomotive, the first end of the third contactor is connected to the air compressor of the electric locomotive and the second end of the fourth contactor, the second end of the fifth contactor is connected to the driving load of the electric locomotive, and the first end of the fourth contactor and the first end of the second contactor are both connected to the reconnection connector; The first end of the seventh contactor is connected to the second end of the eighth contactor, the driver and passenger load of the power charter locomotive, and the reconnector, the second end of the seventh contactor is connected to the auxiliary power supply of the power charter locomotive, and the first end of the eighth contactor is connected to the air compressor of the power charter locomotive; The control method includes: Obtain the power supply mode signal of the marshalling locomotive; When the power supply mode signal is an electric power supply mode signal, the network control system of the electric locomotive controls the first contactor, the second contactor, the third contactor and the fifth contactor to be closed, and controls the fourth contactor to be opened; the network control system of the power charter locomotive controls the eighth contactor to be closed, and controls the seventh contactor to be opened; When the power supply mode signal is a power pack power supply mode signal, the network control system of the electric locomotive controls the second contactor and the fourth contactor to close, and controls the first contactor, the third contactor and the fifth contactor to open; the network control system of the power pack locomotive controls the seventh contactor and the eighth contactor to close; When the power supply mode signal is a hybrid power supply mode signal and a hybrid type signal is obtained, the network control system of the electric locomotive controls the switch states of the first contactor, the second contactor, the third contactor, the fourth contactor, and the fifth contactor according to the hybrid type signal, and the network control system of the power charter locomotive controls the switch states of the seventh contactor and the eighth contactor according to the hybrid type signal, so that the marshalling locomotive adopts the hybrid power supply mode corresponding to the hybrid type signal for power supply; The mixed type signal includes an independent auxiliary power supply signal, an electric auxiliary power supply signal and a power pack auxiliary power supply signal.

2. The control method for the auxiliary power supply through-circuit of a marshalling locomotive according to claim 1, characterized in that: A mode conversion switch connected to the network control system of the electric locomotive and the power charter locomotive is provided in the driver's cab of the marshalling locomotive; the mode conversion switch is used to generate a power supply mode signal.

3. The control method for the auxiliary power supply through-circuit of a marshalling locomotive according to claim 1, characterized in that: The network control system of the electric locomotive is connected to the network control system of the power charter locomotive via a WTB line.

4. The control method for the auxiliary power supply through-circuit of a marshalling locomotive according to claim 1, characterized in that: The through circuit further includes a sixth contactor provided on the electric locomotive, a first end of the sixth contactor being connected to the second end of the first contactor and the second end of the second contactor, and a second end of the sixth contactor being connected to the driving load of the electric locomotive.

5. The control method for the auxiliary power supply through-circuit of a marshalling locomotive according to claim 1, characterized in that: A first circuit breaker is provided between the second end of the third contactor and the auxiliary power supply of the electric locomotive; and a second circuit breaker is provided between the first end of the eighth contactor and the air compressor of the power charter locomotive.

6. The method for controlling the auxiliary power supply feed-through circuit of a marshalling locomotive according to any one of claims 1 to 5, characterized in that: The power charter locomotive is a diesel locomotive or a battery locomotive.

7. The control method for the auxiliary power supply through-circuit of a marshalling locomotive according to claim 1, characterized in that: The network control system of the electric locomotive controls the switching states of the first contactor, the second contactor, the third contactor, the fourth contactor, and the fifth contactor according to the mixed type signal, and the network control system of the power charter locomotive controls the switching states of the seventh contactor and the eighth contactor according to the mixed type signal, including: When the power supply mode signal is a hybrid power supply mode signal, and the hybrid type signal is an independent auxiliary power supply signal, the network control system of the electric locomotive controls the first contactor, the third contactor, and the fifth contactor to be closed, and controls the second contactor and the fourth contactor to be opened; the network control system of the power charter locomotive controls the seventh contactor and the eighth contactor to be closed; When the power supply mode signal is a hybrid power supply mode signal, and the hybrid type signal is an electric auxiliary power supply signal, the network control system of the electric locomotive controls the first contactor, the second contactor, the third contactor, and the fifth contactor to be closed, and controls the fourth contactor to be opened; the network control system of the power charter locomotive controls the eighth contactor to be closed, and controls the seventh contactor to be opened; When the power supply mode signal is a hybrid power supply mode signal and the hybrid type signal is a power pack auxiliary power supply signal, the network control system of the electric locomotive controls the second contactor and the fourth contactor to close, and controls the first contactor, the third contactor and the fifth contactor to open; the network control system of the power pack locomotive controls the seventh contactor and the eighth contactor to close.

8. The control method for the auxiliary power supply through-circuit of a marshalling locomotive according to claim 4, characterized in that: When the fifth contactor fails and needs to be controlled to close, the network control system of the electric locomotive controls the sixth contactor to close.

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