[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5516/NET.2010.42.4.460

OPTIMIZATION OF THE PARAMETERS OF FEEDWATER CONTROL SYSTEM FOR OPR1000 NUCLEAR POWER PLANTS

Kim, Ung-Soo (Safety Analysis Department, KEPCO Engineering and Construction Company)
Song, In-Ho (Safety Analysis Department, KEPCO Engineering and Construction Company)
Sohn, Jong-Joo (Safety Analysis Department, KEPCO Engineering and Construction Company)
Kim, Eun-Kee (Safety Analysis Department, KEPCO Engineering and Construction Company)

Publication Information

Nuclear Engineering and Technology / v.42, no.4, 2010 , pp. 460-467 More about this Journal

Abstract

In this study, the parameters of the feedwater control system (FWCS) of the OPR1000 type nuclear power plant (NPP) are optimized by response surface methodology (RSM) in order to acquire better level control performance from the FWCS. The objective of the optimization is to minimize the steam generator (SG) water level deviation from the reference level during transients. The objective functions for this optimization are relationships between the SG level deviation and the parameters of the FWCS. However, in this case of FWCS parameter optimization, the objective functions are not available in the form of analytic equations and the responses (the SG level at plant transients) to inputs (FWCS parameters) can be evaluated by computer simulations only. Classical optimization methods cannot be used because the objective function value cannot be calculated directely. Therefore, the simulation optimization methodology is used and the RSM is adopted as the simulation optimization algorithm. Objective functions are evaluated with several typical transients in NPPs using a system simulation computer code that has been utilized for the system performance analysis of actual NPPs. The results show that the optimized parameters have better SG level control performance. The degree of the SG level deviation from the reference level during transients is minimized and consequently the control performance of the FWCS is remarkably improved.

Keywords

Feedwater Control System; Parameter Optimization; Simulation Optimization; Response Surface Methodology; Steam Generator Level Control;

Citations & Related Records

Times Cited By Web Of Science : 0 (Related Records In Web of Science)
Times Cited By SCOPUS : 0

Reference

1	Y. Carson and A. Maria, “Simulation Optimization: Methods and Applications,” Proceedings of the 1997 Winter Simulation Conference, p.118-126 (1997).
2	F. Azadivar, “Simulation Optimization Methodologies,” Proceedings of the 1999 Winter Simulation Conference, p.93-100 (1999).
3	H. Gonda Neddermeijer, G. J. van Oortmarssen, N. Piersma, and R. Dekker, “A Framework for Response Surface Methodology for Simulation Optimization,” Proceedings of the 2000 Winter Simulation Conference, 129-136 (2000).
4	R. H. Myers and D. C. Montgomery, Response Surface Methodology: Process and Product Optimization Using Designed Experiments, John Wiley & Sons, New York (1995).
5	U. S. Kim, S. W. Sohn, and I. H. Song, “PI Controllers in Performance Analysis Computer Code for Nuclear Power Plants,” Transactions of the Korean Nuclear Society Autumn Meeting, PyeongChang, Korea, October 25-26 (2007).