Title :
Application of On-Line Signal Recovery to Feedwater Control System
Author :
Park, Gee-Yong ; Kwon, Kee-Choon
Author_Institution :
Adv. Reactor Technol. Dev., Korea Adv. Energy Res. Inst., Seoul
Abstract :
An online signal recovery from a high noise environment is applied to a feedwater control system in nuclear steam generators, which is based on the wavelet denoising method. The wavelet denosing method proposed by Mallat, et al., has shown a superior performance for a signal extraction under a severe noise effect, but this method requires massive computations and a manual inspection of the trajectory of the modulus maxima. This paper proposes a systematic approach for finding the modulus maxima of a signal component under a dyadic decomposition, which is much cheaper for the computation than the other existing methods. From this method, the signal is extracted from a highly fluctuating fluid-flowing signal induced by a measurement uncertainty in a steam generator. The feedwater controller based on this method can control the water level safely through a water level control simulation
Keywords :
nuclear engineering computing; nuclear power stations; nuclear reactor steam generators; signal denoising; wavelet transforms; feedwater control system; fluid-flowing signal; manual trajectory inspection; measurement uncertainty; noise environment; nuclear steam generators; online signal recovery; signal component decomposition; signal extraction; water level control simulation; wavelet denoising method; Computational modeling; Control systems; Inspection; Level control; Measurement uncertainty; Noise generators; Noise reduction; Nuclear power generation; Signal generators; Working environment noise; Feedwater Control System; Nuclear Steam Generator; On-line Signal Recovery; Wavelet Denosing;
Conference_Titel :
SICE-ICASE, 2006. International Joint Conference
Conference_Location :
Busan
Print_ISBN :
89-950038-4-7
Electronic_ISBN :
89-950038-5-5
DOI :
10.1109/SICE.2006.315669
