• Title/Summary/Keyword: DCS Logic

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Consideration on the Effect of Setpoint AGC Command and Related AGC Logic in DCS (설정점 제어방식의 AGC 지령 및 발전소 DCS의 관련로직 변경방안)

  • Jeon, Dong-Hoon;Kwon, Soon-Man;Lee, Hyo-Sang;Shin, Joong-Seon
    • Proceedings of the KIEE Conference
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    • 2001.07a
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    • pp.395-397
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    • 2001
  • A new automatic generation control (AGC) signal transmission format will be adopted in the new energy management system (EMS) that KEPCO is planning to install for managing and operating the power system efficiently under the deregulation environment. Therefore, it is necessary for the power plants to make the AGC processing logic fit the new AGC signal flow format. In this work, we compare the new signal transmission scheme with the conventional one in view of its effect to the signal flow in the distributed control systems (DCS) that ale equipped in power plants to handle AGC operation. Then we propose a basic logic configuration for DCS that can be used with the new signal format. In the design of the configuration, some practical issues that should be discussed for the proper operation of the plants are considered.

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Fan Stall Warning System Design Using the DCS Logic(I) (분산제어 설비를 이용한 Fan Stall Warning System 설계(I))

  • Roh, Yong-Gi;Cho, Hyeon-Seob;Jang, Sung-Whan
    • Proceedings of the KAIS Fall Conference
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    • 2006.05a
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    • pp.236-239
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    • 2006
  • 500MW급 대용량 보일러 통풍계통의 Fan Stall 감시 장치는 Fan 이상 발생시 Fan을 보호하기 위하여 정지시키는 기능을 한다. 그러나 Fan Stall 감시 장치의 빈번한 고장으로 신뢰성이 저하되고 운전에 영향을 미치므로 이것을 DCS Logic으로 구성하여 신뢰성을 향상시켰다.

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Configuration of a Boiler Control System in Thermal Power Plant (화력 발전소 보일러 제어 시스템의 구성에 관한 연구)

  • 변승현;박두용;김병철;신만수
    • 제어로봇시스템학회:학술대회논문집
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    • 2000.10a
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    • pp.168-168
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    • 2000
  • In this paper, a boiler control system for thermal power plant is configured. The boiler control system for thermal power plant is largely composed of an ABC(Automatic Boiler Control) system and a MBC(Mill Burner Control) system. ABC system controls analog process values, so almost all analog control logic is dealt with in ABC system. On the other hand, MBC system relates to sequence control logic such as MFT logic, Furnace Purge, Safety related logic. Advanced control systems made from advanced countries deal with an ABC system and MBC system in a distributed control system. In this paper, we adopt a DCS as an ABC system and adopt a PLC system as a MBC system to configure a boiler control system for thermal power plant using domestic control system. Finally the validity of the configured boiler control system is shown via simulation using digital simulator for boiler system in thermal power plant.

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Development of Fan Stall Warning guard System using DCS (분산제어설비를 이용한 공기맥동 감시 시스템 개발)

  • 조현섭
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.16 no.2
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    • pp.65-70
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    • 2002
  • The fan stall guard system of boiler airing system of the class of 500MW capacity to protect fan. But because confidence is loosed and operation is influenced by frequent fault of fan stall guard system, confidence is improved by substituting DCS Logic for it.

Development of Fan Stall Warning Equipm4ent (송풍기 맥동 감시 장치 개발)

  • Cho, Hyun-Seob
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.9 no.4
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    • pp.924-928
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    • 2008
  • In this paper, The fan stall guard system of boiler airing system of the class of 500MW capacity to protect fan. But because confidence is loosed and operation is influenced by frequent fault of fan stall guard system, confidence is improved by substituting DCS Logic for it.

Fan Stall Warning System Design Using the DCS Logic (분산제어 설비를 이용한 Fan Stall Warning System 설계)

  • Roh, Yong-Gi;Cho, Hyeon-Seob;Jang, Sung-Whan
    • Proceedings of the KIEE Conference
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    • 2006.07d
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    • pp.1953-1955
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    • 2006
  • 500[MW]급 대용량 보일러 통풍계통의 송풍기 맥동 감시 장치는 송풍기 이상 발생시 송풍기를 보호하기 위하여 정지시키는 기능을 한다. 그러나 송풍기 맥동 감시 장치의 빈번한 고장으로 신뢰성이 저하되고 운전에 영향을 미치므로 이것을 DCS 로직으로 구성하여 신뢰성을 향상시켰다.

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TECHNICAL REVIEW ON THE LOCALIZED DIGITAL INSTRUMENTATION AND CONTROL SYSTEMS

  • Kwon, Kee-Choon;Lee, Myeong-Soo
    • Nuclear Engineering and Technology
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    • v.41 no.4
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    • pp.447-454
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    • 2009
  • This paper is a technical review of the research and development results of the Korea Nuclear Instrumentation and Control System (KNICS) project and Nu-Tech 2012 program. In these projects man-machine interface system architecture, two digital platforms, and several control and protection systems were developed. One platform is a Programmable Logic Controller (PLC) for a digital safety system and another platform is a Distributed Control System (DCS) for a non-safety control system. With the safety-grade platform PLC, a reactor protection system, an engineered safety feature-component control system, and reactor core protection system were developed. A power control system was developed based on the DCS. A logic alarm cause tracking system was developed as a man-machine interface for APR1400. Also, Integrated Performance Validation Facility (IPVF) was developed for the evaluation of the function and performance of developed I&C systems. The safety-grade platform PLC and the digital safety system obtained approval for the topical report from the Korean regulatory body in February of 2009. A utility and vendor company will determine the suitability of the KNICS and Nu- Tech 2012 products to apply them to the planned nuclear power plants.

A Study of Fan Stall Warning System Motion Characteristics (축류형 송풍기 운전 특성에 관한 연구)

  • Cho, Hyun-Seob
    • Proceedings of the KAIS Fall Conference
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    • 2006.11a
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    • pp.191-194
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    • 2006
  • 500MW급 대용량 보일러 통풍계통의 Fan Stall 감시 장치는 Fan 이상 발생시 Fan을 보호하기 위하여 정지시키는 기능을 한다. 그러나 Fan Stall 감시 장치의 빈번한 고장으로 신뢰성이 저하되고 운전에 영향을 미치므로 이것을 DCS Logic으로 구성하여 신뢰성을 향상시켰다.

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Simulation Implementation of Fossil Power Plant Condensate Pumps' Rotation Operation Logic Using MATLAB/Simulink (MATLAB/Simulink를 이용한 화력발전소 복수펌프 순환기동로직 시뮬레이션 구현)

  • Yoon, Chang-Sun;Hong, Yeon-Chan
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.17 no.1
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    • pp.693-699
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    • 2016
  • The simulators for pump operation developed by domestic or overseas research have been developed for dynamic analysis or operator training purposes. However, previous developed simulators focused on the operators so they are unsuitable for logic designers or commissioning engineers who need to change the operation conditions or logics arbitrarily. In addition, the simulator for two or more condensate pumps' operation, which can be used easily by plant designers or operators, has not been developed. Accordingly, this paper suggests a simulation method that can be used easily for plant designers or operators using MATLAB Simulink. This suggestion helps users who can use MATLAB to implement ANSI/ISA S5.2, which is applied mainly for DCS (Distributed Control System). In addition, to implement the logics specified in the CODE, Sub-Systems were created for the block and evaluated to determine if they can be used in the simulator. In the working level stage using the suggested method, all error possibilities that might occur during the three pumps' rotation operation could be verified with the suggested simulator during the design stage or before operation.