Ship control simulation system and ship control simulation method

Abstract

The present invention provides a ship control simulation system and a ship control simulation method, and may include a simulation module that virtually simulates a gas system of a ship, a first control module that controls the operation of the virtual gas system simulated in the simulation module under normal operating conditions of the ship, and a second control module that implements an emergency operating situation of the ship in the virtual gas system and controls the operation of the virtual gas system under the emergency operating conditions of the ship.

Description

Technology Field

[0001] The present invention relates to a ship control simulation system and a ship control simulation method. Background Technology

[0002] A digital twin refers to a technology designed to obtain accurate information about the characteristics of real-world assets by creating a digital replica of a real-world object on a computer and simulating situations that may occur in reality. It has recently garnered attention as it allows for the improvement of efficiency across production and services in various industries, as it enables the understanding of the asset's various states, productivity, and operational scenarios.

[0003] As ship functions have recently become more sophisticated and complex, there is a growing demand for pre-verification regarding system safety, maintenance, and operational optimization. This trend is further intensifying due to the increase in orders for high-value-added vessels and the application of complex and diverse functions. Depending on the characteristics of vessels classified as Engineering to Order (ETO) products—designed and manufactured to meet specific customer requirements—digital verification through simulation can be utilized, and digital twin technology can be applied in this process.

[0004] In particular, research and development on technologies for modeling ship gas systems and simulating their operation is ongoing for vessels storing and transporting liquefied gases such as LNG and LPG. Furthermore, given the limitations of simulating emergencies and responses on actual ships prior to actual occurrence, there is a growing need for simulations of gas system control in emergency situations, in addition to normal operating conditions. The problem to be solved

[0005] The present invention aims to provide a ship control simulation system and a ship control simulation method that simulate an emergency operation situation in a virtual gas system of a ship implemented in a virtual environment, and controls and verifies the operation of the virtual gas system in an emergency situation. means of solving the problem

[0006] One aspect of the present invention provides a ship control simulation system comprising: a simulation module that virtually simulates a gas system of a ship; a first control module that controls the operation of the virtual gas system simulated in the simulation module under normal operating conditions of the ship; and a second control module that implements an emergency operating condition of the ship in the virtual gas system and controls the operation of the virtual gas system under the emergency operating condition of the ship.

[0007] Additionally, the second control module may include an emergency situation implementation module that implements the emergency operation situation in the virtual gas system based on stored data regarding the emergency operation conditions of the vessel, and a control signal generation module that controls at least one of the simulation module and the first control module according to the emergency operation situation implemented in the virtual gas system.

[0008] In addition, the control signal generation module can generate a mode control signal that stops the operation of the first control module when the emergency operation situation is implemented in the virtual gas system.

[0009] In addition, the control signal generation module can generate a modeling control signal that controls the operation of the virtual gas system according to the emergency operation situation implemented in the virtual gas system.

[0010] Additionally, the second control module may further comprise a control evaluation module that evaluates the operation of the virtual gas system controlled by the control signal generation module and the control signal generated by the control signal generation module.

[0011] Additionally, the simulation module may comprise a first modeling module that virtually simulates a liquid fuel processing unit that processes liquid fuel stored in the fuel tank of the vessel, a second modeling module that virtually simulates a first fuel supply unit that forcibly vaporizes the liquid fuel stored in the fuel tank and supplies it to the engine as engine fuel, a third modeling module that virtually simulates a gas fuel processing unit that processes gaseous fuel naturally vaporized in the fuel tank, and a fourth modeling module that virtually simulates a second fuel supply unit that compresses the gaseous fuel naturally vaporized in the fuel tank and supplies it to the engine as engine fuel.

[0012] In addition, the second control module can select at least some of the first to fourth modeling modules as an emergency situation execution model based on stored data regarding the emergency operation conditions of the vessel, and can implement the emergency operation situation in the emergency situation execution model.

[0013] In addition, the second control module can control at least one of the first to fourth modeling modules according to the emergency driving situation implemented in the emergency situation execution model.

[0014] Another aspect of the present invention provides a ship control simulation method comprising the steps of: virtually simulating a gas system of a ship and controlling the operation of the simulated virtual gas system; implementing an emergency operation situation of the ship in the virtual gas system; controlling the operation of the virtual gas system based on the emergency operation conditions of the ship; and evaluating the result of the operation control of the virtual gas system.

[0015] In addition, the step of controlling the operation of the virtual gas system may determine the control range of the virtual gas system by considering the emergency operation situation and the emergency operation conditions. Effects of the invention

[0016] A ship control simulation system and a ship control simulation method according to one embodiment of the present invention can implement an emergency situation in a ship's gas system in a virtual environment and perform and verify system control in the emergency situation. Brief explanation of the drawing

[0017] FIG. 1 is a schematic diagram illustrating a ship control simulation system according to one embodiment of the present invention. Figure 2 is a diagram conceptually illustrating a virtual gas system implemented by the ship control simulation system of Figure 1. Figure 3 is a diagram showing the detailed configuration of the simulation module of Figure 1. FIGS. 4 to 6 are drawings showing the detailed configuration of the second control module of FIG. 1. FIGS. 7 to 10 are drawings illustrating exemplary control simulations of the ship control simulation system of FIG. 1. FIG. 11 is a flowchart illustrating a ship control simulation method according to one embodiment of the present invention. Specific details for implementing the invention

[0018] The structure and operation of the present invention will be described in detail below with reference to embodiments of the present invention illustrated in the attached drawings.

[0019] The present invention is capable of various modifications and may have various embodiments; specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention, and the methods for achieving them, will become clear by referring to the embodiments described below in detail together with the drawings. However, the present invention is not limited to the embodiments disclosed below but can be implemented in various forms.

[0020] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. When describing with reference to the drawings, identical or corresponding components are given the same reference numerals, and redundant descriptions thereof will be omitted.

[0021] In the following examples, singular expressions include plural expressions unless the context clearly indicates otherwise.

[0022] In the following embodiments, terms such as "include" or "have" mean that the features or components described in the specification are present, and do not preclude the possibility that one or more other features or components may be added.

[0023] Where an embodiment can be implemented differently, a specific process sequence may be performed differently from the order described. For example, two processes described consecutively may be performed substantially simultaneously or proceed in the reverse order of the description.

[0024] In the drawings, the size of components may be exaggerated or reduced for convenience of explanation. For example, the size and thickness of each component shown in the drawings are depicted arbitrarily for convenience of explanation, so the following embodiments are not necessarily limited to those illustrated.

[0025] FIG. 1 is a schematic diagram showing a ship control simulation system (1) according to one embodiment of the present invention.

[0026] Referring to FIG. 1, the ship control simulation system (1) may be equipped with a simulation module (100), a first control module (200), and a second control module (300).

[0027] The simulation module (100) can virtually simulate the gas system of a ship. The simulation module (100) can implement and simulate a virtual gas system in a virtual environment.

[0028] Specifically, the simulation module (100) can implement a virtual gas system using a digital twin. In this case, a 'digital twin' refers to a technology that creates a twin of a real-world object in a virtual environment and simulates situations that may occur in reality using a computer. The virtual gas system implemented using the digital twin is equipped with virtual components corresponding to the gas system in the actual vessel and can be operated in a manner that substantially corresponds to the operation of the gas system in the actual vessel.

[0029] FIG. 2 is a conceptual drawing of a virtual gas system (10) simulated by the ship control simulation system (1) of FIG. 1.

[0030] Referring to FIG. 2, the virtual gas system (10) may be equipped with a liquid fuel processing unit (SU1), a first fuel supply unit (SU2), a gaseous fuel processing unit (SU3), and a second fuel supply unit (SU4).

[0031] A liquid fuel handling unit (SU1) can process liquid fuel (LF) stored on a vessel. The vessel can store, load, unload, or use the liquid fuel (LF) as engine fuel. The liquid fuel handling unit (SU1) can process the liquid fuel (LF) for storage, use, and transportation.

[0032] The liquid fuel handling unit (SU1) may be equipped with a fuel tank (FT), a cargo pump (CP), a fuel pump (FP), and a spray pump (SP).

[0033] Liquid fuel (LF) can be stored in the fuel tank (FT). The liquid fuel (LF) stored in the fuel tank (FT) can be any type of fuel obtained by liquefying gases with boiling points lower than room temperature, such as liquefied natural gas (LNG) and liquefied petroleum gas (LPG).

[0034] A cargo pump (CP) is connected to a fuel tank (FT) and can transfer liquid fuel (LF). Liquid fuel (LF) can be transferred from the fuel tank (FT) to land or other facilities via the cargo pump (CP).

[0035] The fuel pump (FP) is connected to the fuel tank (FT) and can supply liquid fuel (LF) to the engine (E). The liquid fuel (LF) is transferred to the first fuel supply unit (SU2) through the fuel pump (FP), and can be vaporized in the first fuel supply unit (SU2) and supplied to the engine (E) as engine fuel.

[0036] The spray pump (SP) is connected to the fuel tank (FT) and can regulate the temperature, pressure, etc. of the fuel tank (FT). The spray pump (SP) can regulate the temperature or pressure of the fuel tank (FT) by drawing liquid fuel (LF) from the fuel tank (FT) and injecting the liquid fuel (LF) back into the fuel tank (FT).

[0037] The liquid fuel processing unit (SU1) may be equipped with a first liquid valve (LV1) to a sixth liquid valve (LV6).

[0038] A first liquid valve (LV1) is positioned between the fuel tank (FT) and the cargo pump (CP) to regulate the liquid fuel (LF) flowing into the cargo pump (CP). Additionally, a second liquid valve (LV2) is positioned downstream of the cargo pump (CP) to regulate the liquid fuel (LF) flowing out of the cargo pump (CP). By opening and closing the first liquid valve (LV1) and the second liquid valve (LV2), the supply of liquid fuel (LF) to land or other facilities can be regulated.

[0039] The third liquid valve (LV3) is positioned between the fuel tank (FT) and the fuel pump (FP) to regulate the liquid fuel (LF) flowing into the fuel pump (FP). Additionally, the fourth liquid valve (LV4) is positioned downstream of the fuel pump (FP) to regulate the liquid fuel (LF) flowing out of the fuel pump (FP). By opening and closing the third liquid valve (LV3) and the fourth liquid valve (LV4), the supply of liquid fuel (LF) to the engine (E) through the first fuel supply unit (SU2) can be regulated.

[0040] The fifth liquid valve (LV5) is positioned between the fuel tank (FT) and the spray pump (SP) to regulate the liquid fuel (LF) flowing into the spray pump (SP). Additionally, the sixth liquid valve (LV6) is positioned downstream of the spray pump (SP) to regulate the liquid fuel (LF) flowing out of the spray pump (SP). By opening and closing the fifth liquid valve (LV5) and the sixth liquid valve (LV6), the injection of liquid fuel (LF) from the fuel tank (FT) can be regulated.

[0041] FIG. 2 illustrates an embodiment in which a liquid fuel processing unit (SU1) comprises a fuel tank (FT) and pumps and valves connected thereto, but is not limited thereto. That is, the liquid fuel processing unit (SU1) may comprise a plurality of fuel tanks (FT), and each fuel tank (FT) may be connected to a cargo pump (CP), a fuel pump (FP), and a spray pump (SP). Furthermore, the arrangement and number of the above liquid valves are not limited and may be provided in various combinations capable of controlling the flow of liquid fuel (LF) between each fuel tank (FT) and the above pumps.

[0042] The first fuel supply unit (SU2) can forcibly vaporize the liquid fuel (LF) stored in the fuel tank (FT) and supply it to the engine (E) as engine fuel. The liquid fuel (LF) stored in the fuel tank (FT) is vaporized and supplied to the engine (E) so that it can be used as engine fuel.

[0043] The first fuel supply unit (SU2) may be equipped with a vaporizer (FB) and a first heater (FH1).

[0044] The vaporizer (FB) can forcibly vaporize liquid fuel (LF). The vaporizer (FB) can be connected to the fuel pump (FP) of the liquid fuel processing unit (SU1). Liquid fuel (LF) discharged from the fuel pump (FP) can be vaporized into gaseous fuel (GF) by absorbing thermal energy as it passes through the vaporizer (FB).

[0045] The first heater (FH1) can heat the vaporized gaseous fuel (GF). The liquid fuel (LF) discharged from the vaporizer (FB) and the gaseous fuel (GF) pass through the first heater (FH1), causing the temperature to rise so that they can be supplied to the engine (E) in a usable state.

[0046] The first fuel supply unit (SU2) may be equipped with a first gas valve (GV1). The first gas valve (GV1) is positioned downstream of the heater and can regulate the gaseous fuel (GF) flowing into the engine (E).

[0047] Although not shown in FIG. 2, the first fuel supply unit (SU2) may be further equipped with various devices to stably supply gaseous fuel (GF) to the engine (E), and the first gas valve (GV1) may also be provided in multiple numbers.

[0048] The gaseous fuel processing unit (SU3) can process naturally vaporized gaseous fuel (GF) from the fuel tank (FT).

[0049] Forcibly liquefied liquid fuel (LF) is stored in the fuel tank (FT), and a predetermined amount of liquid fuel (LF) can evaporate from the fuel tank (FT). Since gaseous fuel (GF) that naturally vaporizes within the fuel tank (FT) can increase the internal pressure of the fuel tank (FT), the ship's gas system is equipped with a gaseous fuel processing unit (SU3) to discharge the gaseous fuel (GF) to the outside.

[0050] The gaseous fuel processing unit (SU3) may be equipped with a first compressor (FC1) and a second heater (FH2).

[0051] The first compressor (FC1) can compress gaseous fuel (GF) that has naturally vaporized from the fuel tank (FT). The first compressor (FC1) is connected to the fuel tank (FT), and gaseous fuel (GF) discharged from the fuel tank (FT) can be compressed in the first compressor (FC1). The gaseous fuel (GF) compressed in the first compressor (FC1) may be discharged to land or may be introduced into the second heater (FH2).

[0052] The second heater (FH2) can heat the gaseous fuel (GF) discharged from the first compressor (FC1). The second heater (FH2) is connected to the fuel tank (FT), and the gaseous fuel (GF) discharged from the second heater (FH2) is supplied to the fuel tank (FT) to regulate the temperature, pressure, etc. inside the fuel tank (FT).

[0053] The gas fuel processing unit (SU3) may be equipped with a second gas valve (GV2) to a fourth gas valve (GV4).

[0054] The second gas valve (GV2) is positioned between the fuel tank (FT) and the first compressor (FC1) to regulate the gaseous fuel (GF) flowing into the first compressor (FC1). The third gas valve (GV3) is positioned between the first compressor (FC1) and the second heater (FH2) to regulate the gaseous fuel (GF) discharged to land and the gaseous fuel (GF) flowing into the second heater (FH2). Additionally, the fourth gas valve (GV4) is positioned between the second heater (FH2) and the fuel tank (FT) to regulate the gaseous fuel (GF) recovered into the fuel tank (FT).

[0055] FIG. 2 illustrates an embodiment in which a gas fuel processing unit (SU3) is equipped with one first compressor (FC1) and a second heater (FH2), but is not limited thereto. For example, the gas fuel processing unit (SU3) may be equipped with two or more first compressors (FC1), and a second gas valve (GV2) may be disposed upstream of each first compressor (FC1). Furthermore, the arrangement and number of the second gas valve (GV2) to the fourth gas valve (GV4) are not particularly limited.

[0056] The second fuel supply unit (SU4) can compress naturally vaporized gaseous fuel (GF) from the fuel tank (FT) and supply it to the engine (E) as engine fuel.

[0057] The ship's gas system can reprocess and use gaseous fuel (GF) generated by the natural vaporization of liquid fuel (LF) within the fuel tank (FT). The naturally vaporized gaseous fuel (GF) may be discharged to the outside by the aforementioned gaseous fuel processing unit (SU3) or supplied as engine fuel to the engine (E) by the second fuel supply unit (SU4).

[0058] The second fuel supply unit (SU4) may be equipped with a second compressor (FC2) and a cooler (CL).

[0059] The second compressor (FC2) can compress gaseous fuel (GF) that has naturally vaporized from the fuel tank (FT). The second compressor (FC2) is connected to the fuel tank (FT), and gaseous fuel (GF) leaked from the fuel tank (FT) can be compressed in the second compressor (FC2). The gaseous fuel (GF) compressed in the second compressor (FC2) can be supplied to the engine (E).

[0060] The cooler (CL) can cool the gaseous fuel (GF) discharged from the second compressor (FC2). The cooler (CL) is positioned between the second compressor (FC2) and the engine (E) to cool the gaseous fuel (GF) discharged from the second compressor (FC2). The gaseous fuel (GF) is cooled in the cooler (CL) and can be supplied to the engine (E) in a usable state.

[0061] The second fuel supply unit (SU4) may be equipped with a fifth gas valve (GV5) to a seventh gas valve (GV7).

[0062] The fifth gas valve (GV5) is positioned between the fuel tank (FT) and the second compressor (FC2) to regulate the gaseous fuel (GF) flowing into the second compressor (FC2). The sixth gas valve (GV6) is positioned between the second compressor (FC2) and the cooler (CL) to regulate the gaseous fuel (GF) flowing into the cooler (CL), and the seventh gas valve (GV7) is positioned between the cooler (CL) and the engine (E) to regulate the gaseous fuel (GF) supplied to the engine (E).

[0063] FIG. 2 illustrates an embodiment in which the second fuel supply unit (SU4) is equipped with one second compressor (FC2) and a cooler (CL), but is not limited thereto. For example, the second fuel supply unit (SU4) may have a multi-stage compression structure in which multiple second compressors (FC2) and coolers (CL) are provided and arranged alternately. In addition, the arrangement and number of the fifth gas valve (GV5) to the seventh gas valve (GV7) are not particularly limited.

[0064] In summary, the liquid fuel processing unit (SU1) can appropriately process the liquid fuel (LF) stored in the fuel tank (FT) for purposes such as cargo transport, engine fuel supply, and regulating the internal condition of the fuel tank (FT). The gaseous fuel processing unit (SU3) can discharge the gaseous fuel (GF) that has naturally vaporized within the fuel tank (FT) to land or process it appropriately and resupply it to the fuel tank (FT).

[0065] The first fuel supply unit (SU2) can receive liquid fuel (LF) through the liquid fuel processing unit (SU1), forcibly vaporize it, and supply it to the engine (E) as engine fuel, and the second fuel supply unit (SU4) can supply gaseous fuel (GF) that has been naturally vaporized within the fuel tank (FT) to the engine (E) as engine fuel. At this time, an engine valve (EV) positioned at the front of the engine (E) can regulate the gaseous fuel (GF) supplied from the first fuel supply unit (SU2) and the second fuel supply unit (SU4).

[0066] Figure 3 is a diagram showing the detailed configuration of the simulation module (100) of Figure 1.

[0067] Referring to FIG. 3, the simulation module (100) may include a first modeling module (110), a second modeling module (120), a third modeling module (130), and a fourth modeling module (140).

[0068] The first modeling module (110) can virtually model the liquid fuel processing unit (SU1) of the virtual gas system (10). The first modeling module (110) can virtually implement the liquid fuel processing unit (SU1) and simulate operation according to the operating conditions of the ship.

[0069] In one embodiment, the first modeling module (110) can simulate the unloading of liquid fuel (LF) by driving a cargo pump (CP). Alternatively, the first modeling module (110) can simulate the supply and pressure control of engine fuel by driving a fuel pump (FP). Alternatively, the first modeling module (110) can simulate the temperature and pressure control inside a fuel tank (FT) by driving a spray pump (SP).

[0070] The second modeling module (120) can virtually model the first fuel supply unit (SU2) of the virtual gas system (10). The second modeling module (120) can virtually implement the first fuel supply unit (SU2) and simulate operation according to the operating conditions of the ship.

[0071] In one embodiment, the second modeling module (120) can simulate the generation of gaseous fuel (GF) by forced vaporization and the temperature and pressure control. At this time, the second modeling module (120) can simulate the forced vaporization of liquid fuel (LF) and the flow of gaseous fuel (GF) according to the operation of the vaporizer (FB) and the first heater (FH1).

[0072] Since the first fuel supply unit (SU2) is connected to the fuel pump (FP) of the liquid fuel processing unit (SU1), the second modeling module (120) can be connected to and controlled by the first modeling module (110). That is, the simulation result of the second modeling module (120) can vary depending on the operation of the fuel pump (FP) simulated by the first modeling module (110).

[0073] The third modeling module (130) can virtually model the gas fuel processing unit (SU3) of the virtual gas system (10). The third modeling module (130) can virtually implement the gas fuel processing unit (SU3) and simulate operation according to the operating conditions of the ship.

[0074] In one embodiment, the third modeling module (130) can simulate the land discharge or recovery of gaseous fuel (GF) that has naturally vaporized from the fuel tank (FT). For example, the third modeling module (130) can simulate the recovery of gaseous fuel (GF) to simulate a warm-up process to raise the temperature of the cryogenic fuel tank (FT) before inspection or maintenance work on the fuel tank (FT). At this time, the third modeling module (130) can simulate the flow of gaseous fuel (GF) according to the operation of the first compressor (FC1) and the second heater (FH2).

[0075] The gaseous fuel processing unit (SU3) can be connected to the liquid fuel processing unit (SU1) because it receives naturally vaporized gaseous fuel (GF) from the fuel tank (FT) and recovers the gaseous fuel (GF) back to the fuel tank (FT). Therefore, the third modeling module (130) can be connected to and controlled by the first modeling module (110).

[0076] That is, the simulation result of the third modeling module (130) may vary depending on the flow of gaseous fuel (GF) generated in the first modeling module (110). Additionally, the simulation result of the first modeling module (110) may vary depending on the flow of gaseous fuel (GF) recovered in the third modeling module (130).

[0077] The fourth modeling module (140) can virtually model the second fuel supply unit (SU4) of the virtual gas system (10). The fourth modeling module (140) can virtually implement the second fuel supply unit (SU4) and simulate operation according to the operating conditions of the vessel.

[0078] In one embodiment, the fourth modeling module (140) can simulate the supply of naturally vaporized gaseous fuel (GF) from the fuel tank (FT) to the engine (E). For example, the fourth modeling module (140) can simulate fuel state control for supplying to the engine (E). Alternatively, the fourth modeling module (140) can simulate dynamic feedback control according to changes in the operating conditions of the engine (E). In this case, the fourth modeling module (140) can simulate the flow of gaseous fuel (GF) according to the operation of the second compressor (FC2) and the cooler (CL).

[0079] The second fuel supply unit (SU4) can be connected to the liquid fuel processing unit (SU1) because it receives naturally vaporized gaseous fuel (GF) from the fuel tank (FT). Therefore, the fourth modeling module (140) can be connected to and controlled by the first modeling module (110). That is, the simulation results of the fourth modeling module (140) may vary depending on the flow of the gaseous fuel (GF) generated in the first modeling module (110).

[0080] In this way, the first modeling module (110) to the fourth modeling module (140) can each implement and simulate the liquid fuel processing unit (SU1), the first fuel supply unit (SU2), the gaseous fuel processing unit (SU3), and the second fuel supply unit (SU4) provided by the virtual gas system (10). Since each unit provided by the virtual gas system (10) is organically connected to one another, the simulation results of the first modeling module (110) to the fourth modeling module (140) can influence each other.

[0081] The first control module (200) can control the operation of the virtual gas system (10) under normal operating conditions of the vessel. The first control module (200) is connected to the first modeling module (110) to the fourth modeling module (140) to control the operation of the virtual gas system (10) under normal operating conditions of the vessel.

[0082] For example, the first control module (200) can control the supply of gaseous fuel (GF) according to the operation of the engine (E) under normal operating conditions of the ship. The first control module (200) can regulate the flow of gaseous fuel (GF) by controlling the operation of the first fuel supply unit (SU2) and the second fuel supply unit (SU4) according to changes in the operation of the engine (E) under normal operating conditions of the ship.

[0083] As another example, the first control module (200) can control the flow of gaseous fuel (GF) generated by natural vaporization within the fuel tank (FT). The first control module (200) can control the flow of gaseous fuel (GF) supplied as engine fuel to the engine (E) and the flow of gaseous fuel (GF) discharged to land, respectively, under normal operating conditions of the ship.

[0084] In this way, the first control module (200) can control the operation of the first modeling module (110) to the fourth modeling module (140) according to general operating conditions in the general operating situation of the ship.

[0085] The second control module (300) can control the operation of the virtual gas system (10) under emergency operation conditions of the vessel. The second control module (300) can implement the emergency operation situation of the vessel in the virtual gas system (10) and control the operation of the virtual gas system (10) according to the emergency operation conditions.

[0086] Emergency situations may occur in the ship's gas system, such as equipment malfunctions, failures due to aging, and system errors resulting therefrom. The second control module (300) is connected to the simulation module (100) to implement such emergency operation situations. Additionally, the second control module (300) can control the operation of the simulation module (100) and the first control module (200) by considering emergency operation conditions for the emergency operation situation.

[0087] FIGS. 4 to 6 are drawings showing the detailed configuration of the second control module (300) of FIG. 1.

[0088] Referring to FIGS. 4 to 6, the second control module (300) may include an emergency situation implementation module (310), a control signal generation module (320), and a control evaluation module (330).

[0089] The emergency situation implementation module (310) can implement an emergency situation in the virtual gas system (10). The ship control simulation system (1) can implement an emergency operation situation in the virtual gas system (10) to simulate system control in an emergency operation situation of the ship.

[0090] The emergency situation implementation module (310) may be equipped with a data storage unit (311) and an emergency situation execution module (312).

[0091] The data storage unit (311) can store data regarding the emergency operation situation of the vessel. Data related to emergency operation conditions can be stored in the data storage unit (311), and the emergency operation conditions can be used to implement an emergency situation in the virtual gas system (10).

[0092] Emergency operating conditions may refer to standard ranges and conditions for the operation of a ship's gas system, and emergency operating situations may be implemented in various modified ways based on emergency operating conditions.

[0093] For example, the data storage unit (311) may store emergency operating conditions such as a reference value and an appropriate range for the internal pressure of the ship's fuel tank (FT). Based on these emergency operating conditions, the emergency situation implementation module (310) can implement various emergency operating situations by changing the internal pressure of the fuel tank (FT) of the virtual gas system (10) to various values ​​outside the appropriate range.

[0094] In addition, the data stored in the data storage unit (311) can be used to evaluate the control results of controlling the virtual gas system (10) according to emergency operation conditions.

[0095] For example, the data storage unit (311) can store data regarding malfunction situations of components equipped in the ship's gas system and control solutions accordingly. Alternatively, the data storage unit (311) can store data regarding accident situations such as collision, fire, flooding, etc., that may occur during ship operation and control solutions accordingly.

[0096] The emergency situation execution module (312) is connected to the simulation module (100) to implement an emergency situation in the virtual gas system (10).

[0097] The emergency situation execution module (312) receives stored data regarding the emergency operation situation from the data storage unit (311) and can transmit an execution signal (RS) to the simulation module (100) to implement the emergency situation. The simulation module (100) can execute the emergency situation in the virtual gas system (10) based on the execution signal (RS).

[0098] In one embodiment, the emergency situation execution module (312) may select at least some of the first modeling module (110) to the fourth modeling module (140) as the emergency situation execution model. Depending on the type or degree of the emergency operation situation of the vessel, errors or malfunctions may occur only in some areas of the gas system. The emergency situation execution module (312) may implement the emergency operation situation by selecting the emergency situation execution model among the first modeling module (110) to the fourth modeling module (140).

[0099] The control signal generation module (320) can control at least one of the simulation module (100) and the first control module (200) according to the emergency operation situation implemented in the virtual gas system (10).

[0100] The control signal generation module (320) may include a first signal generation module (321) and a second signal generation module (322).

[0101] The first signal generation module (321) is connected to the first control module (200) and can generate a mode control signal (MS) that determines the control mode of the virtual gas system (10). The first signal generation module (321) can change the control mode of the virtual gas system (10) according to the emergency operation situation.

[0102] In one embodiment, the first signal generation module (321) can generate a mode control signal (MS) that stops the operation of the first control module (200) when an emergency operation situation is implemented in the virtual gas system (10). The first control module (200) controls the simulation module (100) in a normal operation situation, and when an emergency operation situation is implemented, the first control module (200) receives the mode control signal (MS) and stops the control.

[0103] In another embodiment, the first signal generation module (321) can generate a mode control signal (MS) to maintain only partial operation of the first control module (200) when an emergency operation situation is implemented in the virtual gas system (10).

[0104] At this time, the first control module (200) can control only a portion of the first modeling module (110) to the fourth modeling module (140) where no state change occurs due to the emergency operation situation. Through this, the ship control simulation system (1) can efficiently control the simulation module (100) together with the first control module (200) and the second control module (300) in an emergency operation situation.

[0105] The second signal generation module (322) is connected to the second control module (300) and can generate a modeling control signal (CS) that controls the operation of the virtual gas system (10). The second signal generation module (322) can control the operation of the virtual gas system (10) according to emergency operation conditions.

[0106] The second signal generation module (322) can determine and control the control range of the virtual gas system (10) by considering the emergency operation situation and emergency operation conditions of the vessel. A specific method of controlling the simulation module (100) based on the modeling control signal (CS) generated by the second signal generation module (322) will be described in detail below.

[0107] The control evaluation module (330) can evaluate the control signal generated by the control signal generation module (320) and the operation of the virtual gas system (10) controlled accordingly.

[0108] The data storage unit (311) can store data regarding a solution for stabilizing the gas system in an emergency operation situation. The control evaluation module (330) can evaluate the control result by comparing the result data (FS) regarding the control result of the simulation module (100) with the solution data stored in the data storage unit (311). The evaluation result of the control evaluation module (330) can be stored back in the data storage unit (311).

[0109] Through this, the ship control simulation system (1) can verify whether the control of the gas system is performed normally in the emergency operation situation of the ship and improve the control algorithm.

[0110] FIGS. 7 to 10 are drawings exemplarily illustrating a control simulation of the ship control simulation system (1) of FIG. 1.

[0111] Referring to FIGS. 7 through 10, the ship control simulation system (1) can generate an execution signal (RS) in the emergency situation implementation module (310) and provide it to the simulation module (100). When an emergency situation is implemented in the simulation module (100), the control signal generation module (320) can control the virtual gas system (10) by transmitting a modeling control signal (CS) to the simulation module (100). The control result can be transmitted to the control evaluation module (330) as result data (FS) for evaluation.

[0112] FIG. 7 shows an example of implementing an emergency operation situation in a liquid fuel processing unit (SU1).

[0113] In detail, the emergency situation implementation module (310) can provide an execution signal (RSa) to the first modeling module (110). The first modeling module (110) can implement an emergency operation situation by controlling the operation of the liquid fuel processing unit (SU1) based on the execution signal (RSa).

[0114] When an emergency operation situation is implemented in the liquid fuel processing unit (SU1), the control signal generation module (320) can generate a modeling control signal (CS). At this time, although not shown in the drawing, the control signal generation module (320) can generate a mode control signal (MS) and provide it to the first control module (200) to stop the operation control of the virtual gas system (10) according to normal operation conditions.

[0115] As described above, the liquid fuel processing unit (SU1) is connected to the first fuel supply unit (SU2), the gaseous fuel processing unit (SU3), and the second fuel supply unit (SU4), so that liquid fuel (LF) or gaseous fuel (GF) can flow. Therefore, when an emergency operation situation is implemented in the liquid fuel processing unit (SU1), the operation of the first fuel supply unit (SU2), the gaseous fuel processing unit (SU3), and the second fuel supply unit (SU4) may also change.

[0116] Accordingly, the control signal generation module (320) can generate a first modeling control signal (CSa1), a second modeling control signal (CSa2), a third modeling control signal (CSa3), and a fourth modeling control signal (CSa4) for each of the first modeling module (110) to the fourth modeling module (140). Based on this, the control signal generation module (320) can control all of the first modeling module (110) to the fourth modeling module (140).

[0117] For example, in an emergency operation situation where the internal pressure of the fuel tank (FT) of the liquid fuel processing unit (SU1) becomes excessively high and exceeds a reference value, the control signal generation module (320) can stop the operation of the cargo pump (CP), fuel pump (FP), and spray pump (SP) connected to the fuel tank (FT). Additionally, the control signal generation module (320) can stop the operation of the first fuel supply unit (SU2), gaseous fuel processing unit (SU3), and second fuel supply unit (SU4) connected to the fuel tank (FT), or adjust them to a level below the reference range.

[0118] At this time, the control signal generation module (320) can preferentially close or adjust the opening of the first liquid valve (LV1), the third liquid valve (LV3), the fifth liquid valve (LV5), the second gas valve (GV2), and the fifth gas valve (GV5) connected to the fuel tank (FT). In this way, the control signal generation module (320) can control the simulation module (100) by considering the emergency operation situation and emergency operation conditions.

[0119] When control is performed according to the emergency operation situation implemented in the liquid fuel processing unit (SU1), the control evaluation module (330) receives result data (FSa) regarding the control result and can compare and evaluate it with solution data. Depending on the evaluation by the control evaluation module (330), the modeling control signal (CS) generated by the control signal generation module (320) may be modified or updated in real time, and the control algorithm may be improved.

[0120] FIG. 8 shows an embodiment implementing an emergency driving situation in the first fuel supply unit (SU2).

[0121] In detail, the emergency situation implementation module (310) can provide an execution signal (RSb) to the second modeling module (120). The second modeling module (120) can implement an emergency driving situation by controlling the operation of the first fuel supply unit (SU2) based on the execution signal (RSb).

[0122] When an emergency operation situation is implemented in the first fuel supply unit (SU2), the control signal generation module (320) can generate a modeling control signal (CS). At this time, although not shown in the drawing, the control signal generation module (320) generates a mode control signal (MS) and provides it to the first control module (200), and can stop or partially maintain the operation control of the virtual gas system (10) according to normal operation conditions.

[0123] As described above, the first fuel supply unit (SU2) is connected to the liquid fuel processing unit (SU1) to forcibly vaporize the liquid fuel (LF) and supply it to the engine (E). Therefore, when an emergency operation situation is implemented in the first fuel supply unit (SU2), the operation of the liquid fuel processing unit (SU1) may also change.

[0124] Accordingly, the control signal generation module (320) can generate a first modeling control signal (CSb1) and a second modeling control signal (CSb2) for each of the first modeling module (110) and the second modeling module (120). Based on this, the control signal generation module (320) can control the first modeling module (110) and the second modeling module (120).

[0125] For example, in an emergency operation situation such as when the first heater (FH1) in the first fuel supply unit (SU2) overheats or gas leaks, the control signal generation module (320) can stop the operation of the carburetor (FB) and fuel pump (FP) connected to the first heater (FH1). At this time, the control signal generation module (320) can prioritize closing the fourth liquid valve (LV4), the first gas valve (GV1), and the engine valve (EV), or adjust their opening.

[0126] Meanwhile, the forced vaporized gaseous fuel (GF) can be used as engine fuel for the engine (E) together with, or in place of, the naturally vaporized gaseous fuel (GF) leaking from the fuel tank (FT). Accordingly, when an emergency operation situation is implemented in the first fuel supply unit (SU2), the engine fuel supplied to the engine (E) may also need to be adjusted. As a result, the gaseous fuel processing unit (SU3) and the second fuel supply unit (SU4) may also be affected by the emergency operation situation implemented in the first fuel supply unit (SU2).

[0127] Therefore, although not shown in the drawing, the control signal generation module (320) may also transmit the modeling control signal (CS) to the third modeling module (130) and the fourth modeling module (140) to control them together.

[0128] When control is performed according to the emergency driving situation implemented in the first fuel supply unit (SU2), the control evaluation module (330) receives result data (FSb) regarding the control result and can compare and evaluate it with solution data. Depending on the evaluation by the control evaluation module (330), the modeling control signal (CS) generated by the control signal generation module (320) may be modified or updated in real time, and the control algorithm may be improved.

[0129] FIG. 9 shows an embodiment implementing an emergency operation situation in a gas fuel processing unit (SU3).

[0130] In detail, the emergency situation implementation module (310) can provide an execution signal (RSc) to the third modeling module (130). The third modeling module (130) can implement an emergency operation situation by controlling the operation of the gas fuel processing unit (SU3) based on the execution signal (RSc).

[0131] When an emergency operation situation is implemented in the gas fuel processing unit (SU3), the control signal generation module (320) can generate a modeling control signal (CSc). At this time, although not shown in the drawing, the control signal generation module (320) generates a mode control signal (MS) and provides it to the first control module (200), and can stop or partially maintain the operation control of the virtual gas system (10) according to normal operation conditions.

[0132] As described above, the gaseous fuel processing unit (SU3) is connected to the liquid fuel processing unit (SU1) so that naturally vaporized gaseous fuel (GF) can flow. Therefore, when an emergency operation situation is implemented in the gaseous fuel processing unit (SU3), the operation of the liquid fuel processing unit (SU1) may also change.

[0133] Accordingly, the control signal generation module (320) can generate a first modeling control signal (CSc1) and a third modeling control signal (CSc3) for each of the first modeling module (110) and the third modeling module (130). Based on this, the control signal generation module (320) can control the first modeling module (110) and the third modeling module (130).

[0134] For example, in an emergency operation situation due to overpressure of the first compressor (FC1) of the gaseous fuel processing unit (SU3), the control signal generation module (320) can stop the operation of the second heater (FH2) connected to the first compressor (FC1) and cut off the gaseous fuel (GF) flowing in from the fuel tank (FT). At this time, the control signal generation module (320) can prioritize closing the second gas valve (GV2) to the fourth gas valve (GV4) or adjust their opening.

[0135] Meanwhile, naturally vaporized gaseous fuel (GF) flows to a gaseous fuel processing unit (SU3) and / or a second fuel supply unit (SU4), and the supply of gaseous fuel (GF) from the second fuel supply unit (SU4) to the engine (E) may also affect the supply of gaseous fuel (GF) from the first fuel supply unit (SU2) to the engine (E).

[0136] Accordingly, when an emergency operation situation is implemented in the gaseous fuel (GF) supply unit, the naturally vaporized gaseous fuel (GF) that needs to be discharged from the fuel tank (FT) and the engine fuel supplied to the engine (E) may also need to be regulated. As a result, the first fuel supply unit (SU2) and the second fuel supply unit (SU4) may also be affected by the emergency operation situation implemented in the gaseous fuel processing unit (SU3).

[0137] Therefore, although not shown in the drawing, the control signal generation module (320) may also transmit the modeling control signal (CS) to the second modeling module (120) and the fourth modeling module (140) to control them together.

[0138] When control is performed according to the emergency operation situation implemented in the gas fuel processing unit (SU3), the control evaluation module (330) receives result data (FSc) regarding the control result and can compare and evaluate it with solution data. Depending on the evaluation by the control evaluation module (330), the modeling control signal (CS) generated by the control signal generation module (320) may be modified or updated in real time, and the control algorithm may be improved.

[0139] FIG. 10 shows an embodiment implementing an emergency driving situation in the second fuel supply unit (SU4).

[0140] In detail, the emergency situation implementation module (310) can provide an execution signal (RSd) to the fourth modeling module (140). The fourth modeling module (140) can implement an emergency driving situation by controlling the operation of the second fuel supply unit (SU4) based on the execution signal (RSd).

[0141] When an emergency operation situation is implemented in the second fuel supply unit (SU4), the control signal generation module (320) can generate a modeling control signal (CS). At this time, although not shown in the drawing, the control signal generation module (320) generates a mode control signal (MS) and provides it to the first control module (200), and can stop or partially maintain the operation control of the virtual gas system (10) according to normal operation conditions.

[0142] As described above, the second fuel supply unit (SU4) is connected to the liquid fuel processing unit (SU1) so that naturally vaporized gaseous fuel (GF) can flow. Therefore, when an emergency operation situation is implemented in the second fuel supply unit (SU4), the operation of the liquid fuel processing unit (SU1) may also change.

[0143] Accordingly, the control signal generation module (320) can generate a first modeling control signal (CSd1) and a fourth modeling control signal (CSd4) for each of the first modeling module (110) and the fourth modeling module (140). Based on this, the control signal generation module (320) can control the first modeling module (110) and the fourth modeling module (140).

[0144] For example, in an emergency operation situation due to a coolant leak or overheating of the cooler (CL) of the second fuel supply unit (SU4), the control signal generation module (320) can stop the operation of the second compressor (FC2) connected to the cooler (CL) and cut off the gaseous fuel (GF) flowing in from the fuel tank (FT). At this time, the control signal generation module (320) can prioritize closing the fifth gas valve (GV5) to the seventh gas valve (GV7) and the engine valve (EV) or adjust their opening.

[0145] Meanwhile, naturally vaporized gaseous fuel (GF) flows to a gaseous fuel processing unit (SU3) and / or a second fuel supply unit (SU4), and the supply of gaseous fuel (GF) from the second fuel supply unit (SU4) to the engine (E) may also affect the supply of gaseous fuel (GF) from the first fuel supply unit (SU2) to the engine (E).

[0146] Accordingly, when an emergency operation situation is implemented in the second fuel supply unit (SU4), the naturally vaporized gaseous fuel (GF) that needs to be discharged from the fuel tank (FT) and the engine fuel supplied to the engine (E) may also need to be regulated. As a result, the gaseous fuel processing unit (SU3) and the first fuel supply unit (SU2) may also be affected by the emergency operation situation implemented in the second fuel supply unit (SU4).

[0147] Therefore, although not shown in the drawing, the control signal generation module (320) may also transmit the modeling control signal (CS) to the second modeling module (120) and the third modeling module (130) to control them together.

[0148] When control is performed according to the emergency driving situation implemented in the second fuel supply unit (SU4), the control evaluation module (330) receives result data (FSd) regarding the control result and can compare and evaluate it with solution data. Depending on the evaluation by the control evaluation module (330), the modeling control signal (CS) generated by the control signal generation module (320) may be modified or updated in real time, and the control algorithm may be improved.

[0149] FIGS. 7 to 10 illustrate embodiments in which an execution signal (RS) is transmitted to only one of the first modeling module (110) to the fourth modeling module (140), but are not limited thereto, and an emergency situation may be implemented by transmitting an execution signal (RS) to two or more of the first modeling module (110) to the fourth modeling module (140). That is, in the virtual gas system (10) of a ship, one or more units among the liquid fuel processing unit (SU1), the first fuel supply unit (SU2), the gaseous fuel processing unit (SU3), and the second fuel supply unit (SU4) may be determined as the emergency situation execution model to implement the emergency situation. In addition, the control target that is controlled by receiving the modeling control signal (CS) accordingly may also be determined in various combinations.

[0150] In this way, the ship control simulation system (1) can implement an emergency operation situation for the ship's virtual gas system (10), select a control mode to control it, and evaluate the control results. At this time, since the liquid fuel processing unit (SU1), the first fuel supply unit (SU2), the gaseous fuel processing unit (SU3), and the second fuel supply unit (SU4) equipped in the ship's virtual gas system (10) are organically connected, the ship control simulation system (1) can determine an emergency situation execution model and a control target accordingly by taking this into consideration.

[0151] FIG. 11 is a flowchart illustrating a ship control simulation method according to one embodiment of the present invention.

[0152] A ship control simulation method may include a step of virtually simulating a ship's gas system and controlling the operation of the simulated virtual gas system (S100), a step of implementing an emergency operation situation of the ship in the virtual gas system (S200), a step of controlling the operation of the virtual gas system based on the emergency operation conditions of the ship (S300), and a step of evaluating the operation control results of the virtual gas system (S400).

[0153] The step (S100) of virtually simulating a ship's gas system and controlling the operation of the simulated virtual gas system can model the virtual gas system and simulate its operation. At this time, the virtual gas system can be controlled in a control manner for the ship's general operating conditions.

[0154] The step (S200) of implementing an emergency operation situation of a ship in a virtual gas system can implement an emergency operation situation of a ship in a simulated virtual gas system.

[0155] As described above, the virtual gas system may be equipped with a liquid fuel processing unit, a first fuel supply unit, a gaseous fuel processing unit, and a second fuel supply unit, and each of the above units may be modeled and organically connected to one another. Among the above units, an emergency situation execution model in which an emergency operation situation is executed may be selected, and the selected emergency situation execution model may receive an execution signal for the emergency operation situation and have its operation controlled.

[0156] The step (S300) of controlling the operation of a virtual gas system based on the emergency operation conditions of a vessel can determine and control the control range of the virtual gas system by considering the emergency operation situation and emergency operation conditions of the vessel.

[0157] When an emergency operation situation of the vessel is executed, modeling control signals can be generated and transmitted for the emergency situation execution model and the range interacting with it. Based on the modeling control signals, the operation of the virtual gas system, such as the operation of pumps and the opening and closing of valves, can be controlled.

[0158] The step (S400) of evaluating the operation control results of the virtual gas system can evaluate result data for the controlled results based on the modeling control signal. The result data can be evaluated by comparison with solution data for emergency operation situations, thereby verifying the control simulation of the vessel.

[0159] Meanwhile, the order of each step of the ship control simulation method shown in FIG. 11 is exemplary, and each step may be performed simultaneously or the order may differ. Specific examples for each step refer to the description of the ship control simulation system.

[0160] A ship control simulation system and a ship control simulation method according to one embodiment of the present invention can simulate and control a ship's gas system in a virtual environment. A ship control simulation system and a ship control simulation method according to one embodiment of the present invention can implement, control, and evaluate emergency operation situations in a virtual gas system.

[0161] Since the virtual gas system is equipped with multiple units that are organically connected and interact, the ship control simulation system and ship control simulation method according to one embodiment of the present invention can determine and decide the range requiring control under the influence of the emergency operation situation and the model that is the target of the emergency situation execution, thereby performing effective control and verifying the results.

[0162] As such, the present invention has been described with reference to the embodiments illustrated in the drawings, but this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims.

[0163] The specific practices described in the embodiments are examples and do not limit the scope of the embodiments in any way. Furthermore, unless specifically stated as "essential," "importantly," etc., components may not be strictly necessary for the application of the present invention.

[0164] In the specification of the embodiments (particularly in the claims), the use of the term "the above" and similar descriptive terms may be in both singular and plural. Furthermore, where a range is described in the embodiments, it is considered to include the invention with respect to individual values ​​within said range (unless otherwise stated), and is equivalent to describing each individual value constituting said range in the detailed description. Finally, regarding the steps constituting the method according to the embodiments, unless explicitly stated in order or otherwise stated, said steps may be performed in a suitable order. The embodiments are not necessarily limited by the order in which said steps are described. The use of all examples or exemplary terms (e.g., etc.) in the embodiments is merely for the purpose of describing the embodiments in detail, and the scope of the embodiments is not limited by said examples or exemplary terms unless limited by the claims. Furthermore, those skilled in the art will understand that various modifications, combinations, and changes may be made according to design conditions and factors within the scope of the claims or equivalents. Explanation of the symbols

[0165] 1: Ship Control Simulation System 10: Virtual Gas System 100: Simulation Module 200: First control module 300: Second control module

Claims

Claim 1 A ship control simulation system comprising: a simulation module for virtually simulating a ship's gas system; a first control module for controlling the operation of the virtual gas system simulated in the simulation module under normal operating conditions of the ship; and a second control module for implementing an emergency operating condition of the ship in the virtual gas system and controlling the operation of the virtual gas system under the emergency operating condition of the ship. Claim 2 A ship control simulation system according to claim 1, wherein the second control module comprises: an emergency situation implementation module that implements the emergency operating situation in the virtual gas system based on stored data regarding the emergency operating conditions of the ship; and a control signal generation module that controls at least one of the simulation module and the first control module according to the emergency operating situation implemented in the virtual gas system. Claim 3 In claim 2, the control signal generation module generates a mode control signal that stops the operation of the first control module when the emergency operation situation is implemented in the virtual gas system, in a ship control simulation system. Claim 4 In claim 2, the control signal generation module generates a modeling control signal that controls the operation of the virtual gas system according to the emergency operation situation implemented in the virtual gas system, in a ship control simulation system. Claim 5 A ship control simulation system according to claim 2, wherein the second control module further comprises a control evaluation module that evaluates the operation of the virtual gas system controlled by the control signal generation module and the control signal generated by the control signal generation module. Claim 6 A ship control simulation system according to claim 1, wherein the simulation module comprises: a first modeling module that virtually simulates a liquid fuel processing unit that processes liquid fuel stored in the fuel tank of the ship; a second modeling module that virtually simulates a first fuel supply unit that forcibly vaporizes the liquid fuel stored in the fuel tank and supplies it to the engine as engine fuel; a third modeling module that virtually simulates a gas fuel processing unit that processes gaseous fuel naturally vaporized in the fuel tank; and a fourth modeling module that virtually simulates a second fuel supply unit that compresses the gaseous fuel naturally vaporized in the fuel tank and supplies it to the engine as engine fuel. Claim 7 A ship control simulation system according to claim 6, wherein the second control module selects at least some of the first to fourth modeling modules as an emergency situation execution model based on stored data regarding the emergency operation conditions of the ship, and implements the emergency operation situation in the emergency situation execution model. Claim 8 A ship control simulation system according to claim 7, wherein the second control module controls at least one of the first to fourth modeling modules according to the emergency operation situation implemented in the emergency situation execution model. Claim 9 A ship control simulation method comprising: a step of virtually simulating a ship's gas system and controlling the operation of the simulated virtual gas system; a step of implementing an emergency operation situation of the ship in the virtual gas system; a step of controlling the operation of the virtual gas system based on the emergency operation conditions of the ship; and a step of evaluating the result of the operation control of the virtual gas system. Claim 10 In claim 9, the step of controlling the operation of the virtual gas system determines the control range of the virtual gas system by considering the emergency operation situation and the emergency operation conditions, a ship control simulation method.

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