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거점역사 에너지 디지털트윈 시스템의 설계와 구현 Design and Implementation of Energy Digital Twin System for Railway Stations

논문 기본 정보

저자정보
(Korea Railroad Research stitute) (EAN TECHNOLOGY) (EAN TECHNOLOGY) (Korea Railroad Corporation(KORAIL))
저널정보
대한전기학회 전기학회논문지 전기학회논문지 제75권 제11호
발행연도
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3,046 - 3,052 (7page)
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거점역사 에너지 디지털트윈 시스템의 설계와 구현
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    초록·키워드

    Building energy simulation relies on static design-stage inputs and diverges from actual operation after commissioning. This study designs a railway-station digital twin system in five layers, coupling measurements with simulation without re-exporting the model by combining pyenergyplus.api and eppy, and implements it for railway station. The system assembles an EnergyPlus model from a generation script and a parameter catalogue, modifies envelope, equipment and schedules at the object level with eppy, and runs EnergyPlus 26.1.0 in-process, completing an annual simulation of the ten-zone station model in 3.8 to 6.1 seconds. The model was calibrated to monthly metered electricity within ASHRAE Guideline 14 monthly criteria, and CO2 measured by the on-site sensor network was inverted through a mass balance to update ventilation and occupancy inputs. The service layer serves parametric queries via FastAPI, Celery, a result cache, an XGBoost surrogate and Bayesian optimization, and a web dashboard provides monitoring and scenario exploration. The core API and worker processes ran 27 days from 5 August 2026 without restart. Parametric analysis and measurement coupling are achieved in one environment without the re-export required by the earlier FMU approach, while per-timestep measurement injection and closed-loop updating remain at the design stage with interfaces implemented.

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