Earticle

초록

영어

Unconventional oil production plants are complex process systems characterized by highly viscous fluids, multiphase flow, thermal nonlinearity, long time delays, and strong inter-unit coupling. Under such conditions, conventional centralized control structures face limitations in achieving both rapid abnormal situation response and plant-wide operational stability. This study proposes a DDC(Direct Digital Control)-based distributed integrated control system as an alternative to conventional centralized control and quantitatively evaluates its performance. The proposed architecture consists of local DDC control nodes for each process subsystem and a supervisory optimization layer for plant-wide coordination and energy optimization. Five representative abnormal operating scenarios—namely inlet flow fluctuation, separator level deviation, heat exchanger degradation, circulation pump trip, and steam pressure variation—were defined. Performance was evaluated using Response Time, Maximum Deviation, Recovery Time, Energy Consumption Change, and Operational Stability Index(OSI). Results show that the proposed DDC-based structure achieves a 36.4% reduction in response time, 41.9% reduction in maximum deviation, 36.8% reduction in recovery time, and 38.3% reduction in energy consumption increase, with a 38.0% improvement in OSI. These results demonstrate that the proposed control system enhances disturbance rejection and operational stability, providing a practical framework for digital operation of unconventional oil production plants.

목차

Abstract
1. 서론
2. 비전통 오일 생산 플랜트의 제어 대상 특성 및 통합 제어 구조
2.1 공정 특성
2.2 제안된 직접 디지털 제어(DDC) 기반 통합 제어 구조
3. 이상상황 시나리오 및 평가 방법
3.1 연구개요 및 평가 절차
3.2 이상상황 시나리오와 평가조건
3.3 성능 평가 지표
3.4 운전 안정성 지수(OSI)의 정의
4. 결과 및 고찰
4.1 정량 비교 결과
4.2 이상상황별 응답 특성 분석
4.3 결과의 공정적 의미
5. 결론
후기
References

키워드

저자

• 정진홍 [ Jin-hong Jung | President, Gaonens Co., Ltd. Doctor of Engineering in mechanical systems ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국기계항공기술학회지(구 한국기계기술학회지) [Journal of the Korean Society of Mechanical and Aviation Technology ]

• 간기

  격월간

• pISSN

  1229-604X

• eISSN

  2508-3805

• 수록기간

  1999~2026

• 등재여부

  KCI 등재

• 십진분류

  KDC 550 DDC 620