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http://dx.doi.org/10.7839/ksfc.2019.16.4.093

A Study on the Reliability Improvement of the Turbine Control Valve System in Nuclear and Thermal Power Plants  

Yang, Jong Dae (EnesG Co., Ltd.)
Yang, Seok Jo (Department of Mechatronics Engineering, Chungnam National University)
Lee, Yong Bum (Department of Reliability Assessment, Korea Institute of Machinery & Materials)
Publication Information
Journal of Drive and Control / v.16, no.4, 2019 , pp. 93-100 More about this Journal
Abstract
Nuclear and thermal power plants must provide the turbines with an appropriate degree of high temperature and high pressure steam, to produce the optimum electricity. Additionally, in the event of system and power system failure during electrical production, the steam is immediately disabled, to protect the turbines and generators rotating at high speed. The plant thus uses a special steam control valve system for turbine control, which is opened by force of the hydraulic servo actuator and closed by a large steel spring force. In this study, the causes of failure of the turbine control valve system, a key device of the power plants, were analyzed, and the causes of failure were improved relative to reliability of the equipment.
Keywords
Power Plant; Turbine Control Valve; Hydraulic Servo Actuator; Failure Analysis; Air & Gas;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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1 Y. B. Lee and J. J. Lee, "A Study on the Seal Life Improvement of the Hydraulic Servo Actuator for Steam Control of Power Plants", Journal of Drive and Control, Vol.15, No.2, pp.32-37, 2018.   DOI
2 S. D. Kim, S. H. Jeon and J. S. Yun, "A Study on the Phase Bandwidth Frequency of a Directional Control Valve based on the Metering Orifice", Journal of Drive and Control, Vol.15, No.1, pp.1-9, 2018.   DOI
3 I.-K. Choi et al, "Selection of Operating Parameters and Management of Operation Console for Protection and Control of Steam Turbine in a Korea Standard Type Nuclear Power Plant", Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, Vol.25, No.4, pp.71-78, 2011.   DOI
4 Y. B. Lee and D. S. Jung, "Secure Reliability of Turbine Power Control Actuator for Power Plants", Journal of the Korea Fluid Power Systems Society, Vol.7, No.1, pp.22-26, 2010.
5 W. Chengbin and Q. Long, "Study on simulation and experiment of hydraulic excavator's work device based on simulation X", Proceedings of 2011 International Conference on Electric Information and Control Engineering, 2011.
6 J. S. Jang and Y. H. Yoon, "Analysis Model Development for Designing of Hydraulic Power Steering System", Transactions of the Korean Society for Automotive Engineers, Vol.16, No.1, pp.158-165, 2008.
7 H. J. Kim et al., "Service Life Analysis of Control Valve for Automatic Turbine Srartup of Thermal Power Plant", Transactions of the Korean Society of Mechanical Engineers A, Vol.26, No.1, pp.1-6, 2002.
8 J. H. Roh et al., "The development of turbine valve actuator efficiency analysis system for the standard power plants", Proceedings of KIEE Annual Autumn Conference 2002, pp.537-541, 2002.
9 Y. B. Lee et al., "A Study on the Analysis and Improvement of Failure Cause of Steam Control Valve and Hydraulic Servo Actuator for Power Plant", Proceedings of 2019 Spring Conference on Drive and Control, pp.333-338, 2019.
10 Y. B. Lee et al., "A Study on the Main Failure Mode Analysis and Lifetime Improvement of Hydraulic Servo Actuators", Journal of Drive and Control, Vol.15, No.4, pp. 48-54, 2018.   DOI