Auxiliary power supply through circuit of marshalling locomotive and control method

Abstract

The invention discloses a marshalling locomotive auxiliary power supply 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 which are arranged on an electric locomotive, and a seventh contactor and an eighth contactor which are arranged on a power locomotive; the on-off 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 the power supply mode of the marshalling locomotive; wherein the power supply mode comprises a hybrid power supply mode, an electric power supply mode and a power pack power supply mode. By means of the auxiliary power supply through circuit, through control over the auxiliary power supplies of the electric locomotive and the power packaged locomotive is achieved, the power supply requirement of the auxiliary loads of the electric locomotive and the power packaged locomotive is met, and the operation compatibility of the marshalling locomotive on an electrified line and a non-electrified line is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of rail locomotive power supply, and in particular relates to an auxiliary power supply through circuit and a control method for a marshaling locomotive. Background Art

[0002] In the rail transit operation mode, the locomotive formation generally adopts the form of electric locomotive directly pulling diesel locomotive or battery locomotive. This type of locomotive is a new type of locomotive composed of electric locomotive + power charter locomotive through internal coupling. Among them, the electric locomotive is provided with traction, auxiliary and train power supply by pantograph through AC25kV contact network; the power supply system of the power charter locomotive is powered by internal combustion engine set or traction battery and other energy storage devices.

[0003] However, when the marshaling locomotive needs to run on both electrified and non-electrified railways, the original marshaling and single traction mode cannot meet the operational needs. Summary of the invention

[0004] The object of the present invention is to provide a marshaling locomotive auxiliary power supply through-circuit and control method to solve the problem that the locomotive formed by the electric locomotive + power charter locomotive only uses the electric locomotive to directly pull the power charter locomotive, which cannot meet the operation needs of the marshaling locomotive on some lines.

[0005] The present invention solves the above technical problems through the following technical solutions: a marshaling locomotive auxiliary power supply through-circuit, the marshaling locomotive includes an electric locomotive and a power charter locomotive; the through-circuit includes 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 charter 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 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;

[0007] 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;

[0008] The switching 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 the power supply mode of the marshalling locomotive; wherein the power supply mode includes a hybrid power supply mode, an electric power supply mode and a power pack power supply mode.

[0009] Furthermore, 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.

[0010] Further, the network control system of the electric locomotive is connected to the network control system of the power charter locomotive through a WTB line; 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 power supply mode of the marshaling locomotive;

[0011] The network control system of the power charter locomotive controls the switching states of the seventh contactor and the eighth contactor according to the power supply mode of the marshaling locomotive.

[0012] Furthermore, the through circuit also includes a sixth contactor provided on the electric locomotive, a first end of the sixth contactor is 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 is connected to the driving load of the electric locomotive.

[0013] Furthermore, 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.

[0014] Furthermore, the power charter locomotive is a diesel locomotive or a battery locomotive.

[0015] Based on the same concept, the present invention provides a control method for the auxiliary power supply through-circuit of the marshaling locomotive as described above, comprising:

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

[0017] 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 the power supply mode signal, so that the marshalling locomotive adopts the power supply mode corresponding to the power supply mode signal for power supply.

[0018] Further, controlling 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 according to the power supply mode signal includes:

[0019] 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 close, and controls the fourth contactor to open; the network control system of the power charter locomotive controls the eighth contactor to close, and controls the seventh contactor to open;

[0020] 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;

[0021] 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 marshaling locomotive adopts the hybrid power supply mode corresponding to the hybrid type signal for power supply;

[0022] Among them, 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.

[0023] Further, 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 mixed 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 mixed type signal, including:

[0024] 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 close, and controls the second contactor and the fourth contactor to open; the network control system of the power charter locomotive controls the seventh contactor and the eighth contactor to close;

[0025] 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 close, and controls the fourth contactor to open; the network control system of the power charter locomotive controls the eighth contactor to close, and controls the seventh contactor to open;

[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 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.

[0027] Further, 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.

[0028] Beneficial Effects

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

[0030] The auxiliary power supply through-circuit of the present invention realizes the through-control of the auxiliary power supply of the electric locomotive and the power charter locomotive, ensures the power supply demand of the auxiliary loads of the electric locomotive and the power charter locomotive, and improves the operation compatibility of the marshaling locomotive on electrified lines and non-electrified lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only one embodiment of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is a schematic diagram of the auxiliary power supply through circuit of the marshaling locomotive in an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The following is a clear and complete description of the technical solutions in the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

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

[0035] The locomotive involved in the present invention is composed of an electric locomotive and a power charter locomotive. The power charter locomotive in this embodiment is a diesel locomotive or a battery locomotive. Among them, the electric locomotive refers to a locomotive that obtains electric energy from a power supply network or a power supply rail and is driven by an electric motor; the diesel locomotive refers to a locomotive with an internal combustion engine as the original power; and the battery locomotive refers to a locomotive with a battery pack as the power source.

[0036] The driver and passenger load involved in the present invention refers to the auxiliary equipment required to meet the riding environment of the driver and passengers, such as air conditioners, heaters, and window heating equipment; the driving load refers to the auxiliary equipment required to meet normal driving, such as inverter water pumps and inverter fans. The power supply modes involved in the present invention include hybrid power supply mode, electric power supply mode, and power pack power supply mode. The hybrid types in the hybrid power supply mode include independent auxiliary power supply mode, electric auxiliary power supply mode, and power pack auxiliary power supply mode.

[0037] The electric power supply mode refers to the mode in which the auxiliary power supply of the electric locomotive supplies power to the driver and passenger load, driving load and air compressor of the electric locomotive, and the driver and passenger load and air compressor of the power charter locomotive;

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

[0039] Independent auxiliary power supply mode refers to a mode in which the auxiliary power supply of the electric locomotive supplies power to the driver and passenger load, driving load and air compressor of the electric locomotive, and the auxiliary power supply of the power charter locomotive supplies power to the driver and passenger load and air compressor of the power charter locomotive. The power supply of the electric locomotive and the power charter locomotive are independent of each other.

[0040] The electric auxiliary power supply mode refers to the mode in which the auxiliary power supply of the electric locomotive supplies power to the driver and passenger loads and the air compressor of the power charter locomotive when the diesel engine is not started or the power battery power is lower than the minimum power. 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 driver and passenger load and the air compressor of the electric locomotive when the auxiliary inverter of the electric locomotive fails or the output contactor of the auxiliary inverter is stuck. The switching state of each contactor in the power pack auxiliary power supply mode is the same as the switching state of each contactor in the power pack power supply mode.

[0042] Example 1

[0043] like Figure 1As shown, an auxiliary power supply through-circuit of a marshalling locomotive provided in an embodiment of the present invention comprises a first contactor KM1, a second contactor KM2, a third contactor KM3, a fourth contactor KM4 and a fifth contactor KM5 arranged on an electric locomotive, and a seventh contactor KM7 and an eighth contactor KM8 arranged on a power charter locomotive; a first end of the first contactor KM1, a second end of the third contactor KM3 and a first end of the fifth contactor KM5 are all connected to the auxiliary power supply of the electric locomotive, a second end of the first contactor KM1 is connected to the second end of the second contactor KM2 and the driver and passenger load of the electric locomotive, The first end of the third contactor KM3 is connected to 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 to the driving 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 to the reconnecting connector LZ; the first end of the seventh contactor KM7 is connected to the second end of the eighth contactor KM8, the driver and passenger load of the power charter locomotive and the reconnecting connector LZ, the second end of the seventh contactor KM7 is connected to the auxiliary power supply of the power charter locomotive, and the first end of the eighth contactor KM8 is connected to the air compressor of the power charter 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 marshaling locomotive. In a specific embodiment of the present invention, 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 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 configured in the cab of the electric locomotive and the cab of the power charter locomotive. The mode conversion switch of each cab is connected to the network control system of the corresponding locomotive, that is, the mode conversion switch of the cab of the electric locomotive is connected to the network control system of the electric locomotive, the mode conversion switch of the cab of the power charter locomotive is connected to the network control system of the power charter locomotive, and the network control system of the electric locomotive is connected to the network control system of the power charter locomotive through the WTB line, so that the power supply mode signal generated by the mode conversion switch runs through the entire locomotive. The mode conversion switch has three gears, namely, the "electric" position, the "power pack" position and the "mixed" 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 marshaling 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 marshaling locomotive; when the mode conversion switch is rotated to the "mixed" position, a mixed power supply mode signal is generated, corresponding to the mixed power supply mode of the marshaling locomotive.

[0046] In addition, a hybrid type selection interface is provided on the DDU (i.e., the driver's driving display device) 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" selection boxes. The system defaults to "independent auxiliary power supply", that is, the system restores the "independent auxiliary power supply" mode after power is turned 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 marshaling 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 marshaling 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 marshaling 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 different power supply modes of the marshaling 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 realized by closing the second contactor KM2 and the eighth contactor KM8; the power charter locomotive supplies power to the auxiliary system of the electric locomotive, which is realized 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 different power supply modes of the marshaling 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 different power supply modes of the marshaling locomotive, specifically including:

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

[0050] When the mode conversion switch is in the "mixed" position, that is, the power supply mode signal is a mixed power supply mode signal, the mixed type signal generated by the DDU is obtained, and the network control system of the electric locomotive controls the switching 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 mixed type signal, and the network control system of the power charter locomotive controls the switching states of the seventh contactor KM7 and the eighth contactor KM8 according to the mixed type signal.

[0051] 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 mixed type signal, 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 mixed type signal, including:

[0052] When the mode conversion switch is in the "mixed" position and the "independent auxiliary power supply" checkbox 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 close, and controls the second contactor KM2 and the fourth contactor KM4 to open, and the auxiliary power supply of the electric locomotive supplies power to the air compressor, driver and passenger load of the electric locomotive; the network control system of the power charter locomotive controls the seventh contactor KM7 and the eighth contactor KM8 to close, and the auxiliary power supply of the power charter locomotive supplies power to the air compressor and driver and passenger load of the power charter locomotive, that is, the electric locomotive and the power charter locomotive are powered independently of each other (that is, not connected);

[0053] When the mode conversion switch is in the "mixed" position and the "electric auxiliary power supply" checkbox of the DDU is selected, 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 close, and controls the fourth contactor KM4 to open; the network control system of the power charter locomotive controls the eighth contactor KM8 to close, and controls the seventh contactor KM7 to open, and the auxiliary power supply of the electric locomotive supplies power to the air compressor and the driver and passenger load of the power charter locomotive, which is the same as the switch state of the contactor in the electric power supply mode;

[0054] When the mode conversion switch is in the "mixed" position and the "power pack auxiliary power supply" checkbox of the DDU is selected, the network control system of the electric locomotive controls the second contactor KM2 and the fourth contactor KM4 to close, and controls the first contactor KM1, the third contactor KM3 and the fifth contactor KM5 to open; the network control system of the power charter locomotive controls the seventh contactor KM7 and the eighth contactor KM8 to close, and the auxiliary power supply of the power charter locomotive supplies power to the air compressor and the driver and passenger load of the electric locomotive, which is the same as the switch state of the contactor in the power pack power supply mode. The gear selection of the mode conversion switch is only valid when the driver's cab selection is at the occupied end.

[0055] In this embodiment, if the power charter locomotive is a diesel locomotive and the diesel engine is not started, the "Electric Auxiliary Power Supply" checkbox can be selected through the DDU, and the electric locomotive will supply power to the auxiliary system of the power charter locomotive; if the power charter locomotive is a battery locomotive and the battery power is too low (lower than the set threshold), the "Electric Auxiliary Power Supply" checkbox can be selected through the DDU, and the electric locomotive will supply power to the auxiliary system of the power charter locomotive; if the auxiliary inverter of the electric locomotive fails or the output contactor of the auxiliary inverter is stuck, resulting in the auxiliary power supply of the electric locomotive being unable to supply power to its auxiliary load, the "Power Pack Auxiliary Power Supply" checkbox can be selected through the DDU, and the power charter locomotive will supply power to the auxiliary system of the electric locomotive.

[0056] In a specific embodiment of the present invention, the through circuit also includes a sixth contactor KM6 arranged on the electric locomotive, the first end of the sixth contactor KM6 is connected to the second end of the first contactor KM1 and the second end of the second contactor KM2, and the second end of the sixth contactor KM6 is connected to the driving load of the electric locomotive.

[0057] When the fifth contactor KM5 fails and needs to be controlled to close, the network control system of the electric locomotive controls the sixth contactor KM6 to close, and the power supply of the vehicle load is realized through the sixth contactor KM6.

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

[0059] The auxiliary power supply through-circuit of the present invention realizes the through-control of the auxiliary power supply of the electric locomotive and the power charter locomotive, thereby realizing the auxiliary power supply through-function of the marshaling locomotive under different power supply modes, ensuring the power supply demand of the auxiliary loads of the electric locomotive and the power charter locomotive, and improving the operation compatibility of the marshaling locomotive on electrified and non-electrified lines. The present invention can work in three power supply modes, and each power supply mode can realize the function of the auxiliary loads of the electric locomotive and the power charter locomotive working at the same time.

[0060] Example 2

[0061] A control method for a marshalling locomotive auxiliary power supply through-circuit as described in Example 1 provided in an embodiment of the present invention comprises the following steps:

[0062] Step 1: The network control system of the electric locomotive obtains the power supply mode signal of the marshaling locomotive, and transmits the power supply mode signal to the network control system of the power charter locomotive;

[0063] Step 2: The network control system of the electric locomotive controls the switching 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 power supply mode signal, and the network control system of the power charter locomotive controls the switching states of the seventh contactor KM7 and the eighth contactor KM8 according to the power supply mode signal, so that the marshalling locomotive adopts the power supply mode corresponding to the power supply mode signal.

[0064] 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 power supply mode signal, 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 power supply mode signal, specifically including:

[0065] 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 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 be closed, 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 be closed, 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 the driver and passenger load of the power charter locomotive;

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

[0067] When the power supply mode signal is a hybrid power supply mode signal and the network control systems of the electric locomotive and the power charter locomotive both obtain the hybrid type signal, the network control system of the electric locomotive controls the switching 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 hybrid type signal, and the network control system of the power charter locomotive controls the switching states of the seventh contactor KM7 and the eighth contactor KM8 according to the hybrid type signal, so that the marshalling locomotive adopts 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 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 mixed type signal, 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 mixed type signal, including:

[0069] 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 KM1, the third contactor KM3 and the fifth contactor KM5 to close, and controls the second contactor KM2 and the fourth contactor KM4 to open, and the auxiliary power supply of the electric locomotive supplies power to the air compressor, driver and passenger load and driving load of the electric locomotive; the network control system of the power charter locomotive controls the seventh contactor KM7 and the eighth contactor KM8 to close, and the auxiliary power supply of the power charter locomotive supplies power to the air compressor and driver and passenger load of the power charter locomotive;

[0070] 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 KM1, the second contactor KM2, the third contactor KM3 and the fifth contactor KM5 to close, and controls the fourth contactor KM4 to open; the network control system of the power charter locomotive controls the eighth contactor KM8 to close, and controls the seventh contactor KM7 to open, and the auxiliary power supply of the electric locomotive supplies power to the air compressor and the driver and passenger load of the power charter 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 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 KM2 and the fourth contactor KM4 to close, and controls the first contactor KM1, the third contactor KM3 and the fifth contactor KM5 to open; the network control system of the power charter locomotive controls the seventh contactor KM7 and the eighth contactor KM8 to close, and the auxiliary power supply of the power charter locomotive supplies power to the air compressor and driver and passenger loads 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 a specific embodiment of the present invention, when the fifth contactor KM5 fails and needs to be controlled to close, the network control system of the electric locomotive controls the sixth contactor KM6 to close.

[0073] What is disclosed above is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or modifications within the technical scope disclosed in the present invention, which should be covered within the protection scope of the present invention.

Claims

1. A marshaling locomotive auxiliary power supply through-circuit, wherein the marshaling 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 switching 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 the power supply mode of the marshalling locomotive; wherein the power supply mode includes a hybrid power supply mode, an electric power supply mode and a power pack power supply mode.

2. The auxiliary power supply through-circuit of a marshaling 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 auxiliary power supply through-circuit of a marshaling 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 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 marshaling locomotive; The network control system of the power charter locomotive controls the switching states of the seventh contactor and the eighth contactor according to the power supply mode of the marshaling locomotive.

4. The auxiliary power supply through-circuit of a marshaling 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 a second end of the first contactor and a second end of the second contactor, and a second end of the sixth contactor being connected to a driving load of the electric locomotive.

5. The auxiliary power supply through-circuit of a marshaling 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 auxiliary power supply through-circuit of a marshaling 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. A control method for the auxiliary power supply through-circuit of a marshalling locomotive as claimed in any one of claims 1 to 6, characterized in that: The control method comprises: Obtain the power supply mode signal of the marshalling locomotive; 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 the power supply mode signal, so that the marshalling locomotive adopts the power supply mode corresponding to the power supply mode signal for power supply.

8. The control method for the auxiliary power supply through-circuit of a marshaling locomotive according to claim 7, characterized in that: 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, comprising: 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 close, and controls the fourth contactor to open; the network control system of the power charter locomotive controls the eighth contactor to close, and controls the seventh contactor to open; 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 marshaling locomotive adopts the hybrid power supply mode corresponding to the hybrid type signal for power supply; Among them, 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.

9. The control method for the auxiliary power supply through-circuit of a marshaling locomotive according to claim 8, characterized in that: 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 mixed 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 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 close, and controls the second contactor and the fourth contactor to open; the network control system of the power charter 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 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 close, and controls the fourth contactor to open; the network control system of the power charter locomotive controls the eighth contactor to close, and controls the seventh contactor to open; 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.

10. The control method for the auxiliary power supply through circuit of a marshaling locomotive according to any one of claims 7 to 9, 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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