KR102540514B1 - Onshore and offshore digital twin integrated empirical test system and method for green and smart ship - Google Patents

Abstract

The present invention relates to an integrated demonstration system and method for an eco-friendly smart ship onshore and offshore digital twin through simulation using digital twin technology. It includes a remote control system controlled by a remote control system, a server system that receives voyage data from a remotely controlled ship and stores the data, and a digital twin system that simulates a ship or parts of a ship and operates by receiving the voyage data. It has the advantage of being able to demonstrate integration of land and sea digital twins through the grafting of digital twin technology that links the developed copy parts with actual products.

Description

Eco-friendly smart ship onshore and offshore digital twin integrated empirical test system and method {Onshore and offshore digital twin integrated empirical test system and method for green and smart ship}

The present invention relates to a system for verifying a ship, and relates to an integrated demonstration system and method for an eco-friendly smart ship land-sea digital twin through simulation using digital twin technology.

Existing studies have been conducted on land performance tests for individual devices, but these have limitations in not reflecting the marine environment. In addition, in the case of facilities that are difficult to develop and manufacture, there are limitations in testing, and there are limitations in research to reflect various product specifications or systems. Due to this, empirical research through the integrated system has been lacking, and there is a problem of low reliability of data by performing simple parameters or partial load sections in empirical research. In addition, there was no system capable of constructing a redundant system and FMEA (failure mode and effects analysis) of the entire system to determine the stability of the entire system, beyond simply verifying the functional and electrical characteristics of the system. And in the case of finished products, it is difficult to test the system under various conditions.

There is no system for comparing and verifying the superiority of the proposed propulsion system compared to existing technologies including mechanical propulsion system or conventional diesel fuel, conventional AC power distribution, etc. In addition, in the case of future ship propulsion systems, there is no confirmed technology, and proposals are being made to use power sources and power sources for mechanical propulsion systems, electric propulsion systems, hybrid propulsion systems, etc., but there is no system for accurate comparison and verification. .

Comprehensive analysis of propulsion system data according to fuel consumption and exhaust gas as it is necessary to analyze the economic feasibility and environmental characteristics beyond the comparative verification of electrical characteristics and fuel consumption, etc. should be done, but the existing system did not. In addition, in order to demonstrate the digital twin function, it is necessary to verify the simulation of the device or the simulated part of the control unit, and in the case of the ship system, the demonstration in the actual ship must be accompanied.

Republic of Korea Patent Registration No. 10-2238184 (2021.04.02., land test bed for land demonstration and operation performance of eco-friendly propulsion system for ships)

Therefore, the present invention was devised to solve the problems of the prior art as described above, and the purpose of the present invention is to reflect various product specifications or systems. It is to provide an eco-friendly smart ship land-sea digital twin integrated demonstration system and method that can reduce costs.

In addition, the present invention provides a land-sea digital twin integrated verification system and method for an eco-friendly smart ship that can link land and sea verification.

In addition, it provides a system and method for integrating environmental smart ship onshore and offshore digital twins that are comparable to each other for commercial parts or developed parts.

The technical problem to be achieved by the present embodiment is not limited to the technical problems as described above, and other technical problems may exist.

The present invention provides a ship equipped with a sensor for measuring voyage data, a communication device connected to the ship and transmitting and receiving data, a remote control system for remotely controlling the operation of the ship, and receiving voyage data from the remotely controlled ship. A land center including a server system for storing data and a digital twin system that simulates a ship or parts of a ship and operates by receiving voyage data, wherein the server system evaluates the simulated ship or ship's parts Includes an evaluation unit.

In addition, the digital twin system includes a propeller HIL system that simulates one or more propulsion systems and simulates the simulated propulsion system, and the evaluation unit receives evaluation data for each propulsion system from the server system and compares performance. includes

In addition, the performance comparison unit is characterized in that the server system compares and evaluates fuel consumption or exhaust gas for each propulsion system as input.

In addition, the digital twin system is characterized in that it simulates the proposed power distribution system.

In addition, the digital twin system implements the existing AC distribution system, constant speed generator, DC distribution system, variable speed power generation system, and constant speed power generation system, thereby demonstrating the electrical characteristics of an AC DC hybrid power distribution system that can use AC power alone or DC power alone. characterized by verification.

In addition, the digital twin system simulates any one of a battery, a fuel cell, and an eco-friendly power source disposed in a ship as a power source, and the server system is characterized in that it stores evaluation data for each power source.

In addition, the ship includes an operation controller for controlling the ship's steering, engine, power generation source and power source, and a data collection device for collecting the ship's voyage data, the state of the ship's power converter and the current state of the ship's power, from land sensors It is characterized in that it is operated by receiving a driving signal and transmits the collected data.

In addition, the communication device is characterized in that it constitutes communication redundancy by including an extreme ultrasound device and a mobile communication device.

In addition, in the digital twin demonstration method including the digital twin demonstration system, the simulation step of replicating a ship or ship's parts through the digital twin system, the connection step of linking the simulated ship or parts with the ship through a communication device, land The center generates navigation signals and controls the ship remotely, the land center collects navigation data and electric propulsion system data from the ship's sensors, and the digital twin system collects the collected navigation data and electric propulsion system data. It includes a derivation step of receiving an input and deriving a result value of a ship or part.

In addition, the digital twin verification method includes an evaluation step of comparing and evaluating result values of simulated ships or parts after the derivation step.

In addition, the digital twin demonstration method is characterized in that the existing power distribution system and the proposed power distribution system are copied in the simulation step, and the performances of the existing power distribution system and the proposed power distribution system are compared in the evaluation step.

In the present invention, it is possible to demonstrate integration of land and sea digital twins through the grafting of digital twin technology that links the developed simulated parts with actual products.

The present invention applies the actual load profile of the maritime environment through the integrated control system implemented with the communication system, builds and applies real generators, real batteries, real fuel cells, capacitors, solar power, wind power, etc., and system facilities. It is possible to test the digital twin connection with the system.

With the system developed through the present invention, it is possible to train electric propulsion ships, eco-friendly ships, and autonomous ships.

1 is a block diagram of a land digital twin integration platform.
2 is a configuration diagram of a marine demonstration vessel.
3 is a configuration diagram of an electric propulsion system.
4 is a configuration diagram of an electric propulsion system demonstration test bed.
5 is a configuration diagram of research equipment related to a marine engine.
6 is a flowchart of the present invention.

Since the present invention can make various changes and have various embodiments, specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all changes included in the spirit and technical scope of the present invention.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this application, it should not be interpreted in an ideal or excessively formal meaning. Should not be.

There are proposals using various power sources and power sources for various propulsion systems, but there is no system capable of accurate comparison and verification.

Hereinafter, an eco-friendly smart (autonomous ship, etc.) demonstration system and a demonstration method using the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a land digital twin integration platform. Referring to FIG. 1, a ship 200 equipped with a sensor for measuring voyage data, a communication device 110 connected to the ship 200 to transmit and receive data, and remote control of the operation of the ship 200 A remote control system 120, a server system 130 that receives voyage data from a remotely controlled ship and stores the data, and a digital twin system 140 that simulates a ship or parts of a ship and operates by receiving the voyage data ), and the server system 130 includes an evaluation unit that evaluates the simulated ship or parts of the ship.

The land center 100 includes a digital twin system 140 that simulates and simulates a ship under development or parts of a ship, a remote control system 120 that remotely controls a demonstration shelf, and operational data of the demonstration ship 200. and a server system 130 that stores state data and stores data derived through the digital twin system.

The land center 100 is wirelessly connected to the marine demonstration vessel 200 by a communication unit to transmit and receive data. At this time, the demonstration vessel 200 receives a remote control signal from the land center 100, and the traveling direction, traveling speed, and battery management are remotely controlled, and the remotely controlled demonstration vessel 200 is internally controlled. The ship's voyage data, the state of the power converter of the ship 200, the power status of the ship, etc. are transmitted to the land center 100 by the attached sensor.

Data transmitted to the athletics center 100 is stored in the server system 130 . The server system 130 includes a big data server, monitoring software, and a 3D virtual model server (CPS).

The big data server stores data received from the ship 200, signal data for remotely controlling the ship 200, and performance data using the digital twin system. Saved data is helpful for operational efficiency by referring to operation control according to the situation during actual ship operation other than empirical evaluation.

The monitoring software is software that assists the user to check the data stored in the server, displays ship status information, and includes a calculation unit that calculates comparative analysis data through the digital twin system 140. In addition, the life cycle of a ship or part is evaluated.

The 3D virtual model server (CPS, Cyber Physical System) is a system in which various phenomena in the real world and the digital cyber world are closely combined. The 3D virtual model server stores programs for simulating ships or parts implemented in the digital twin system. The performance of a ship or part can be calculated through simulation.

The digital twin system 140 is simulated by copying the developed parts, and in conjunction with the propeller HIL system 141, etc., simulation of one or more propeller systems may be performed. In addition, the digital twin system implements the existing AC distribution system, constant-speed generator, DC distribution system, variable-speed power generation system, and constant-speed power generation system, and verifies the electrical characteristics of the hybrid AC/DC power distribution system that can use AC or DC power alone. .

Hardware in the Loop (HIL) systems are real-time simulations that can initiate testing of embedded code without system hardware. HIL systems allow testing of anomalies and failure conditions that can damage hardware if the code under development does not operate within specification. Through this, it is possible to test the abnormality of the shape of the part under development and the abnormal operation according to the input.

The remote control system 120 remotely controls the demonstration vessel 200 through the communication device 110 . The ship 200 is operated through a remote control system, and navigation data according to the operation is stored in the server system 130. The voyage data stored in the server system 130 is input to the digital twin system 140, and the simulated ship or part receives a load according to the voyage data and an output value is derived. The derived output value is stored in the server system 130, and the remote control system 120 generates a ship operation signal based on the derived output value.

The ship 200 moves along the set route, but mechanical and electrical operation characteristics can be identified according to the output values of the ship 200 and parts to be developed. The sailing route and sailing time, etc. of the established sailing route are changed according to the ships and parts being developed, and the resultant fuel consumption, emission gas, etc. are measured to demonstrate economic and environmental integration and life cycle assessment (LCA). It can be presented to users, designers, ship owners, etc.

Therefore, the present invention can be simultaneously demonstrated on land and at sea through a communication system, and integrated demonstration of land and sea digital twins is also possible through the grafting of digital twin technology that links developed simulated parts with actual products.

The present invention applies the actual load profile of the marine environment through an integrated control system (monitoring, recording, alarm, remote control) implemented with a communication system and can be applied to actual generators (MDO, MGO, VLSFO, ULSFO, LPG, LNG, etc.) ), actual batteries, actual fuel cells, capacitors, solar power, wind power, etc., and system facilities (fuel supply system, fresh water cooling system, air compressor, air supply device, electrical equipment, etc.) can be built and applied, and the simulated system and of digital twin linkage test is possible.

2 is a configuration diagram of a marine demonstration vessel. The vessel for demonstration is a vessel capable of actual sea operation, and has any one of various propulsion systems such as a mechanical propulsion system, an electric propulsion system, and a hybrid propulsion system.

Referring to FIG. 2 , the demonstration vessel 200 receives a remote control signal of the vessel from the land center 100 and is remotely controlled through the vessel operation controller 220 . The demonstration vessel 200 includes an operation controller 220 that controls the steering 221, the engine 222, and the battery 223 of the vessel, an electric power status monitor 211, and a power converter monitor 212. ), a motor state monitor 213, and a data collection device 210 that collects data through a battery state monitor 241, receives a driving signal from the land sensor 100, and collects data. It is characterized by transmitting.

The data collection device 210 is a ship radar screen, GPS location information, ship AIS information, motion sensor, CCTV screen, ship power status, power converter status, electric propulsion motor status, and battery status through a monitoring device disposed in the vessel. collect etc. The collected data is transmitted to the athletics center.

The ship operation controller 220 receives signals from the land center 100 and controls the ship's driving direction, operating speed, motor control, and power. In addition, the ship operation controller controls various power sources and power sources of the ship. For example, it is possible to smoothly supply power in a ship by controlling configurations of a battery, a fuel cell, a solar power generator, etc. disposed in a ship.

At this time, connectivity is important because ships on the sea are remotely controlled from the onshore center. Communication devices deployed in ships and onshore centers are equipped with ultra-high frequency (UHF), mobile communication devices (LTE, long-term evolution), and Wi-Fi (Wireless fidelity) to form communication redundancy. do. It is possible to increase the stability of data transmission and reception through communication redundancy.

3 is a configuration diagram of an electric propulsion system. A ship including an electric propulsion system is taken as an example, and the type of propulsion system applied may be changed, and the data collection device and the ship control method may be changed according to the type of propulsion system. Referring to FIG. 3 , a ship including an electric propulsion system 300 is equipped with experimental research equipment related to an electric propulsion system. Empirical research equipment related to the electric propulsion system includes a power generation system 310, a control system 320, a propulsion system 330, a fuel supply system 340, a load device 350, an AC power distribution system 360, and a DC power distribution system. 370, a battery system 380, a cooling system 390, and an engine performance measuring system 3100.

The power generation system 310 tests characteristics in connection with a power source. For example, power sources include fuel cells, battery systems, diesel generators, and LPG generators. Power characteristics are tested using a power simulator. The control system 320 develops and tests the performance of PMS (Power Management System) and EMS (Engine management System) control algorithms. In addition, it interlocks with the electric propulsion system to test the power quality. The propulsion system 330 tests the performance of the propulsion inverter and tests the integrated performance of the propulsion system. Also, propulsion motor performance and efficiency are tested. At this time, the input/output signal of the motor is transmitted to the vessel for demonstration, and land and sea integrated demonstration is carried out.

The AC distribution system 360 tests and analyzes AC distribution system power characteristics. In addition, AC power system performance for each failure mode is tested, and AC electric propulsion system performance is tested. The DC distribution system 370 tests and analyzes the power characteristics of the DC distribution system. In addition, DC power system performance for each failure mode is tested, and DC electric propulsion system performance is tested. It presents the performance to compare the systems applied in the required ship, and the direction of countermeasures can be established in advance through performance tests for each failure mode.

In the present invention, an integrated control system including a monitoring, recording, alarm and control system is provided, and a hybrid electric propulsion system test facility and a hybrid AC/DC distribution system are applied. In addition, a DC or AC generator including a power management system (PMS) and a hybrid constant speed / variable speed generator is applied. In addition, as a power source, a fuel cell system, a battery system, a load test device, an environment test device, a simulated electric propulsion system controller, and a simulated electric propulsion system are included.

4 is a configuration diagram of an electric propulsion system demonstration test bed. Referring to FIG. 4, a motor of a ship having an electric propulsion system is composed of an induction motor as well as a DC motor, a permanent magnet synchronous motor, and the like, and is operated by receiving power from a power source. In order to verify the efficiency of the system, the present invention implements a 1:1 comparison between a DC distribution system using an Active Front-End (AFE) rectifier and a variable speed power generation system using the same specifications compared to the existing AC distribution system and constant speed generator, thereby enabling electrical specific can be verified.

AC power is generated from the constant speed generator and is connected to the AC board 440. The motor 460 is connected to the AC board 440 and operated. AC power is generated in the variable speed generator, converted to DC power through the AFE rectifier and converter 420 and connected to the DC board 430. The motor 460 is connected to the DC board 430 and operated by receiving AC power through the inverter 450. Through the illustrated configuration, electrical characteristics can be compared and verified according to the configuration of the power system.

The AFE method actively controls the AC power produced by the generator and converts it into DC, and uses power switches capable of on/off control such as IGBT, MOSFET, and GTO to control the rectifier.

In addition, in the demonstration test bed of the present invention, one or more power sources are arranged to verify efficiency and electrical characteristics. The battery 411, the diesel generators 412 and 413, and the LPG generator 414 are arranged as power sources and compared and evaluated.

One or more motors are arranged for comparative evaluation, and each motor receives power from one of various power sources to verify efficiency and electrical characteristics. At this time, the demonstration is conducted under various conditions by utilizing a DC distribution system and an AC distribution system using a converter and an inverter.

The configuration connected to the motor is the same as described above, but the battery is connected to the distribution system to deliver power to the motor, and the LPG engine generator is converted through a converter and connected to the distribution system.

5 is a configuration diagram of research equipment related to a marine engine. Referring to FIG. 5 , the exhaust gas generated from the marine engine 500 is discharged through a discharge unit 540, and a mixing and injection unit 510 is disposed in a pipe connected to the discharge unit 540. The mixing and injection unit 510 is supplied with a reducing material through the connected pump unit 510, and exhaust gas is reduced. At this time, the discharge unit 510 can reduce the exhaust gas by further disposing a catalyst, and the mixing and injection unit 510 and the discharge unit 540 are connected to the power supply unit 530 and operated.

For marine engines, performance is verified for exhaust aftertreatment facilities, measurement systems, auxiliary equipment systems, and diesel engine systems.

Marine engines are equipped with an exhaust post-processing facility that purifies exhaust gas discharged from the engine. Test and evaluate the performance of post-processing facilities related to air quality regulations of the International Maritime Organization (IMO), such as EGCS (Exhaust Gas Cleaning System), SCR (Selective catalytic reduction), and EGR (Exhaust Gas Recirculation). The present invention utilizes existing post-treatment facilities to perform various equipment performance tests and comparative tests such as urea water, catalyst, and packing.

In addition, the engine's auxiliary equipment system is compared and evaluated for its performance. For example, the performance of various equipment related to the marine engine cooling system is tested and evaluated, and the performance of the EGCS (Exhaust Gas Cleaning System) and EGR (Exhaust Gas Recirculation) water treatment system is evaluated.

The measurement system placed in the engine is NDIR (non-dispersive infrared), CLD (Chemi-luminescent Detection) and FTIR (Fourier transform infrared) according to ISO 8178 and NOx technical code standards. ) Performs engine and related equipment evaluation and certification tests using various equipment of measurement method. Through this, the engine performance is measured according to the amount of fuel consumed, and the amount of exhaust gas and equipment performance are evaluated.

It includes a diesel engine system that conducts engine parts and related equipment performance tests using marine diesel engines. Proceed with NTC Scheme-B performance test performance function and demonstration test through similar conditions in ship engine room.

6 is a flowchart of the present invention. Referring to FIG. 6, the present invention includes a digital twin verification method implemented through the digital twin verification system described above. A simulation step (S1) of replicating a ship or ship's parts through the digital twin system, a linkage step (S2) of linking the simulated ship or parts with the ship through a communication device (S2), and the onshore center generates a navigation signal and moves the ship remotely The ship control step (S3) controlled by the ship control, the navigation data collection step (S4) in which the land center collects navigation data from the ship's sensor, and the digital twin system receives the collected navigation data and outputs the result of the ship or parts. It includes a data derivation step (S5) to derive.

In the simulation step (S1), the ship or parts of the ship under development are simulated using the digital twin system. The digital twin system is not simply shaped, but simulated ships or parts are simulated by receiving data. The digital twin system can copy the existing propulsion system and the proposed propulsion system, and it can be connected to the propeller HIL system to check whether the proposed ship or parts are abnormal. In addition, the present invention is not limited to ships and parts, and can simulate existing power distribution systems and proposed power distribution systems.

In the linking step (S2), the demonstration ship deployed on the actual sea and the land center including the digital twin system are connected through a communication device to transmit and receive data to each other. At this time, the communication device configures communication redundancy with an ultra-high frequency ultrasound device (UHF) and a mobile communication device (LTE) in order to increase the stability of data transmission and reception.

In the control step (S3), the onshore center connected to the demonstration vessel includes a remote control system capable of remotely controlling the vessel. The ship for demonstration is operated by transmitting the operation signal of the ship through the remote control system. The ship for demonstration includes a ship operation controller, and the ship's traveling direction, traveling speed, and battery management are remotely controlled by the received signal.

In the collection step (S4), the ship's voyage data and electric propulsion system data for remote operation are collected through a data collection device disposed in the ship. For example, the ship's power status, power converter status, motor status, battery status, etc. are collected and transmitted to an onshore center equipped with a server system.

For example, the remote control system transmits a control signal so that the demonstration vessel is rotated to the right, and control devices such as a steering wheel, a motor, and a battery are controlled to rotate to the right by a ship operation controller of the vessel. Data such as the load of generated parts, fuel consumption, and power status are collected and stored in the server system of the land center.

In the derivation step (S5), the data collected from the demonstration vessel is input to the simulated vessel or parts to derive the result value of the part. For example, when receiving the data of the part of the demonstration vessel from the server system and requesting the same movement as the demonstration vessel, the fuel consumption and power status of the development part are collected and stored in the server system. That is, the performance of the component is measured when the same signal is given.

In addition, a feedback step of generating a driving signal of a demonstration vessel based on the result value data of the simulated vessel or parts may be included. That is, by changing the parts of the ship to the simulated parts, the input signal and the output signal can be fed back and linked. It is possible to check data on the entire operation through feedback, and through this, there is an advantage that more accurate economic and environmental comparison is possible.

In the evaluation step (S6), the data collected from the demonstration vessel and the resultant data of the simulated vessel or parts are stored in the server system, and are compared and evaluated based on the stored data. At this time, it is possible to compare and evaluate the performance of the first development part and the second development part stored in the server system, not limited to the comparison between the demonstration vessel and the development part.

Through this, various propulsion systems applied to eco-friendly ships and smart ships are identified in terms of mechanical and electrical operation characteristics according to the real-time ship load environment, and economic and environmental integration demonstration and life cycle evaluation verification through fuel consumption and emission measurement Key data can be presented to users, designers, ship owners, etc.

The present invention is not limited to the above embodiments, and the scope of application is diverse, and various modifications and implementations are possible without departing from the gist of the present invention claimed in the claims.

100: athletics center
110: communication device 120: remote control system
130: server system 131: propulsion system
200: propulsion vessel for demonstration
210: data collection device
211: ship power status monitor unit 212: power converter monitor unit
213: motor status monitor unit 214: battery status monitor unit
220: ship operation controller
221: steering 222: motor control unit
223: battery control unit
300: electric propulsion system
310: power generation system 320: control system
330: propulsion system 340: fuel supply system
350: load device 360: AC distribution system
370: DC distribution system 380: battery system
390: cooling system 3100: engine performance measurement system
400: test bed
411: battery 412, 413: diesel generator
414: LPG generator 420: converter
430: AC board 440: DC board
450: inverter 460: motor
500: engine
510: mixing and injection unit 520: pump unit
530: power supply unit 540: discharge unit

Claims (11)

A ship including an operation controller that receives operation signals from the land and controls the ship's steering, engine, power source, and power source, and a data collection device that collects the ship's voyage data, the state of the ship's power converter, and the current state of the ship's power;
A communication device connected to the ship to transmit and receive data, a remote control system for remotely controlling the operation of the ship, receiving voyage data from the remotely controlled ship, storing the data, and evaluating the simulated ship or ship's parts A server system including an evaluation unit, and an onshore center including a digital twin system that simulates a ship or ship's parts and distribution system and operates by receiving voyage data;
The digital twin system includes a propeller HIL system that simulates one or more ships having different propulsion systems and simulates shape anomalies and motion anomalies of the simulated propulsion systems,
The evaluation unit includes a performance comparison unit that receives evaluation data for each propulsion system and compares performance, and receives and compares and evaluates fuel consumption or exhaust gas for each propulsion system,
A digital twin demonstration system characterized by verifying the electrical characteristics by replicating the DC distribution system and the variable speed power generation system with the same specifications to enable a 1: 1 comparison compared to the existing AC distribution system and constant speed generator.
delete delete delete According to claim 1,
The digital twin system is a digital twin demonstration system, characterized in that the electrical characteristics are verified by simulating a hybrid AC DC power distribution system capable of using only AC power distribution or only DC power distribution.
According to claim 1,
The digital twin system
Any one of a battery, a fuel cell, and an eco-friendly power source disposed in a ship is simulated as a power source,
The server system is a digital twin demonstration system, characterized in that for storing evaluation data for each power source.
delete According to claim 1,
The communication device is a digital twin demonstration system, characterized in that for configuring communication redundancy by having an extreme ultrasound device and a mobile communication device.
In the digital twin verification method including the digital twin verification system of claim 1,
A simulation step of simulating a ship or ship's parts through a digital twin system;
A connection step in which the simulated ship or parts and the ship are linked through a communication device;
A control step of generating an operation signal by the onshore center and remotely controlling the ship;
The land center collects navigation data and electric propulsion system data from the ship's sensors; and
The digital twin system includes a derivation step of receiving the collected voyage data and electric propulsion system data and deriving the result of the ship or parts; Digital twin verification method comprising a.
According to claim 9,
The digital twin verification method
After the derivation step, a digital twin demonstration method comprising an evaluation step of comparing and evaluating the result of the simulated ship or part.
According to claim 10,
The digital twin verification method
In the simulation step, the existing power distribution system and the proposed power distribution system are copied,
Digital twin demonstration method, characterized in that for comparing the performance of the existing power distribution system and the proposed power distribution system in the evaluation step.

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