KR-20260062239-A - Method of operation for shunting of hydrogen locomotive

KR20260062239AKR 20260062239 AKR20260062239 AKR 20260062239AKR-20260062239-A

Abstract

A method for operating a hydrogen locomotive for shunting according to one embodiment of the present invention may include, based on the case where a train is operated from an overhead line section toward an overhead line section, a) a step in which the train is operated by power produced from an electric locomotive that receives power through the overhead line of the overhead line section; b) a step in which the train enters the overhead line section; c) a step in which the hydrogen locomotive located in the overhead line section is coupled with the electric locomotive; d) a step in which the train obtains traction and propulsion through the hydrogen locomotive and performs at least one of operation, reorganization, and freight transport in the overhead line section; e) a step in which the train enters the overhead line section through the traction and propulsion of the hydrogen locomotive; f) a step in which the coupling of the electric locomotive and the hydrogen locomotive is released and the hydrogen locomotive is separated from the train; and g) a step in which the train repeats the process from step a) to step f) until the shunting schedule is terminated after step f).

Inventors

류명록
강대훈
김길동
이건복
김보경
이준희

Assignees

한국철도기술연구원

Dates

Publication Date: 20260507
Application Date: 20241028

Claims (11)

Based on the case where a train operates from an overhead line section toward an unoverhead line section, a) A step in which the train is operated by power produced from an electric locomotive that receives power through the overhead line of the above-mentioned overhead line section; b) A step in which the above train enters the above non-catenary section; c) A step in which the hydrogen locomotive located in the above-mentioned non-catenary section and the electric locomotive are combined; d) A step in which the train obtains traction and propulsion through the hydrogen locomotive to perform at least one of operation, reorganization, and freight transport in the non-catenary section; e) A step in which the above train enters the above overhead line section through the traction and propulsion force of the above hydrogen locomotive; f) a step of uncoupled the electric locomotive and the hydrogen locomotive and separating the hydrogen locomotive from the train; and g) a step of repeating the process from step a) to step f) until the shunting schedule of the train is completed after step f); characterized by including a method for operating a hydrogen locomotive for shunting.
In Article 1, The above hydrogen locomotive is, A method for operating a hydrogen locomotive for shunting, characterized by using liquid hydrogen as fuel to provide traction and propulsion in the above-mentioned non-catenary section.
In Article 2, The above hydrogen locomotive is, A liquid hydrogen tank for storing the above liquid hydrogen; and A method for operating a hydrogen locomotive for shunting, characterized by including a pressure sensor for measuring the internal pressure of the liquid hydrogen tank.
In Paragraph 3, The above hydrogen locomotive is, A method for operating a hydrogen locomotive for shunting, characterized by including a fuel cell connected to the liquid hydrogen tank and operated to produce electricity through a chemical reaction between gaseous hydrogen and oxygen discharged from the liquid hydrogen tank.
In Article 4, The above fuel cell is, A method for operating a hydrogen locomotive for shunting, characterized by consuming the liquid hydrogen in the liquid hydrogen tank and reducing the internal pressure of the liquid hydrogen tank whenever the internal pressure of the liquid hydrogen tank exceeds a preset pressure due to the vaporization of the liquid hydrogen stored in the liquid hydrogen tank while the hydrogen locomotive is parked at a predetermined parking location as the shunting schedule of the above train ends.
In Article 5, The above fuel cell is, A method for operating a hydrogen locomotive for shunting, characterized in that the hydrogen locomotive is connected to an overhead line of the parking location to sell electricity to the power grid after being parked at the parking location.
In Paragraph 3, The above hydrogen locomotive is, A fuel cell connected to the above liquid hydrogen tank and operated to produce electricity through a chemical reaction between gaseous hydrogen discharged from the above liquid hydrogen tank and oxygen; A battery connected to the fuel cell and charged through electricity produced from the fuel cell; and A method for operating a hydrogen locomotive for shunting, characterized by including a power consuming device connected to the battery and consuming the power of the battery when the battery is fully charged through electricity produced by the fuel cell.
In Article 7, The above fuel cell is, A method for operating a hydrogen locomotive for shunting, characterized by consuming the liquid hydrogen in the liquid hydrogen tank and reducing the internal pressure of the liquid hydrogen tank whenever the internal pressure of the liquid hydrogen tank exceeds a preset pressure due to the vaporization of the liquid hydrogen stored in the liquid hydrogen tank while the hydrogen locomotive is parked at a predetermined parking location as the shunting schedule of the above train ends.
In Article 8, The above power consumption device is, A method for operating a hydrogen locomotive for shunting, characterized by being an electric heater that generates heat through the electricity of the battery and consumes the power of the battery in the form of heat.
In Paragraph 3, The above hydrogen locomotive is, A compressor connected to the liquid hydrogen tank and compressing gaseous hydrogen discharged to the outside whenever the internal pressure of the liquid hydrogen tank exceeds a preset pressure due to the vaporization of liquid hydrogen stored inside the liquid hydrogen tank; A gaseous hydrogen tank connected to the above compressor and storing gaseous hydrogen compressed by the above compressor; A liquefier connected to the above gaseous hydrogen tank and liquefying gaseous hydrogen stored in the above gaseous hydrogen tank into liquid hydrogen; and A method for operating a hydrogen locomotive for shunting, characterized by including a re-liquefaction tank connected to the above-mentioned liquefier, which stores liquefied hydrogen that has been re-liquefied after being discharged from the liquid hydrogen tank through the above-mentioned liquefier and then supplies it to the above-mentioned liquid hydrogen tank.
In Article 10, The above hydrogen locomotive is, A method for operating a hydrogen locomotive for shunting, characterized by re-liquefying gaseous hydrogen discharged from the liquid hydrogen tank and supplying it to the liquid hydrogen tank, thereby storing the liquid hydrogen without consuming it while reducing the internal pressure of the liquid hydrogen tank.

Description

Method of operation for shunting of hydrogen locomotive The present invention relates to a method for operating a hydrogen locomotive for shunting, and more specifically, to a method for operating a hydrogen locomotive that generates power and electricity using hydrogen as fuel as a shunting locomotive. The overhead line (electric line) is an essential overhead line used to supply power to trains, such as electric locomotives (or electric multiple units), and typically consists of overhead lines installed on poles and supporting devices; it can supply power by making contact with the train through a pantograph while the train is in operation. If such overhead lines can be installed along the entire train route, trains combined with electric locomotives could be the most energy-efficient. However, since it is generally impossible to install overhead lines along the entire train route, trains coupled with electric locomotives cannot operate in non-catenary sections where overhead lines are not installed, such as ports, terminals, and freight depots (marshals). Furthermore, there is a disadvantage in that it is difficult to reduce time and costs because, when train operation, reorganization, or freight transport is required in non-catenary sections, the shunting locomotive must be coupled to the train and then operated. Accordingly, there is a need to research measures to reduce the time and costs associated with train operation, reorganization, and freight transportation in non-catenary sections. FIG. 1 is a schematic diagram illustrating the operation method of a train among the shunting operation methods of a hydrogen locomotive according to one embodiment of the present invention. FIG. 2 is a schematic diagram illustrating a train to be operated in an overhead line section and a non-overhead line section according to one embodiment of the present invention. FIGS. 3 to 5 are schematic diagrams illustrating the operation method of a liquid hydrogen tank installed in a hydrogen locomotive among the shunting operation methods of a hydrogen locomotive according to one embodiment of the present invention. Hereinafter, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. However, since the description of the present invention is merely an example for structural or functional explanation, the scope of the present invention should not be interpreted as being limited by the embodiments described in the text. That is, since the embodiments are subject to various modifications and may take various forms, the scope of the present invention should be understood to include equivalents capable of realizing the technical concept. Furthermore, the objectives or effects presented in the present invention do not imply that a specific embodiment must include all of them or only such effects; therefore, the scope of the present invention should not be understood as being limited by them. The meaning of the terms described in this invention should be understood as follows. Terms such as "first" and "second" are intended to distinguish one component from another, and the scope of rights shall not be limited by these terms. For example, the first component may be named the second component, and similarly, the second component may be named the first component. When a component is referred to as being "connected" to another component, it should be understood that it may be directly connected to that other component, or that there may be other components in between. Conversely, when a component is referred to as being "directly connected" to another component, it should be understood that there are no other components in between. Meanwhile, other expressions describing the relationship between components, such as "between" and "exactly between," or "adjacent to" and "directly adjacent to," shall be interpreted in the same manner. A singular expression should be understood to include a plural expression unless the context clearly indicates otherwise, and terms such as "include" or "have" are intended to specify the existence of the set-up features, numbers, steps, actions, components, parts, or combinations thereof, and should be understood not to preclude the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. Unless otherwise defined, all terms used herein have the same meaning as generally understood by those skilled in the art to which this invention pertains. Terms defined in commonly used dictionaries should be interpreted as having meanings consistent with the context of the relevant technology and should not be interpreted as having an ideal or overly formal meaning unless explicitly defined in this invention. Shunting operation method Hereinafter, the configuration of a preferred embodiment of the shunting operation method of the hydr