Title:
METHOD AND SYSTEM FOR MONITORING THE PERFORMANCE OF PLANT INSTRUMENTS USING FFVR AND GLRT
Document Type and Number:
WIPO Patent Application WO/2012/050262
Kind Code:
A1
Abstract:
The present invention relates to a method for monitoring the performance of plant instruments using FSVR and GLRT, comprising: a first step of representing the entire data set (X) as a matrix and classifying the data set into three data subsets for training (Xtr), optimization (Xopt), and testing (Xts); a second step of normalizing all of the data represented as a matrix in the first step; a third step of classifying the normalized data set (Z) into three data subsets for training (Ztr), optimization (Zopt), and testing (Zts); a fourth step of extracting main components from the data subsets (Z) for training (Ztr), optimization (Zopt), and testing (Zts); a fifth step of dividing the data sets and main components into data groups by a desired number; a sixth step of calculating optimal coefficients (ε1,C1,σ1) and (ε2,C2,σ2) of each FSVR model; a seventh step of calculating a fuzzy membership grade (μ1,μ2); an eighth step of calculating output prediction values (Zts1_hat and Zts2_hat); a ninth step of calculating a prediction value for all of the data (Zts_hat); a tenth step of classifying prediction values for the testing data; an eleventh step of calculating prediction values for the sensors in an original scale; and a twelfth step of determining the drift of the sensors.
Inventors:
SEO IN-YONG (KR)
HA BOK-NAM (KR)
LEE SUNG-WOO (KR)
SHIN CHANG-HOON (KR)
PARK MIN-HO (KR)
HA BOK-NAM (KR)
LEE SUNG-WOO (KR)
SHIN CHANG-HOON (KR)
PARK MIN-HO (KR)
Application Number:
PCT/KR2010/008308
Publication Date:
April 19, 2012
Filing Date:
November 24, 2010
Export Citation:
Assignee:
KOREA ELECTRIC POWER CORP (KR)
SEO IN-YONG (KR)
HA BOK-NAM (KR)
LEE SUNG-WOO (KR)
SHIN CHANG-HOON (KR)
PARK MIN-HO (KR)
SEO IN-YONG (KR)
HA BOK-NAM (KR)
LEE SUNG-WOO (KR)
SHIN CHANG-HOON (KR)
PARK MIN-HO (KR)
International Classes:
G21D3/04; G05B19/406; G05B23/02
Foreign References:
| KR100867938B1 | 2008-11-10 | |||
| KR100340967B1 | 2002-06-20 | |||
| US20050261837A1 | 2005-11-24 |
Other References:
NA, M.G. ET AL.: "A SOFT-SENSING MODEL FOR FEEDWATER FLOW RATE USING FUZZY SUPPORT VECTOR REGRESSION", NUCLEAR ENGINEERING AND TECHNOLOGY, vol. 40, no. 1, February 2008 (2008-02-01), pages 69 - 76
YANG, H.Y. ET AL.: "FUZZY SUPPORT VECTOR REGRESSION MODEL FOR THE CALCULATION OF THE COLLAPSE MOMENT FOR WALL-THINNED PIPES", NUCLEAR ENGINEERING AND TECHNOLOGY, vol. 40, no. 7, December 2008 (2008-12-01), pages 607 - 614
IN-YONG SEO ET AL., JOURNAL OF THE KOREA SOCIETY FOR SIMULATION, vol. 18, no. 3, September 2009 (2009-09-01), pages 103 - 112
YANG, H.Y. ET AL.: "FUZZY SUPPORT VECTOR REGRESSION MODEL FOR THE CALCULATION OF THE COLLAPSE MOMENT FOR WALL-THINNED PIPES", NUCLEAR ENGINEERING AND TECHNOLOGY, vol. 40, no. 7, December 2008 (2008-12-01), pages 607 - 614
IN-YONG SEO ET AL., JOURNAL OF THE KOREA SOCIETY FOR SIMULATION, vol. 18, no. 3, September 2009 (2009-09-01), pages 103 - 112
Attorney, Agent or Firm:
KIM, YOON-BAE (KR)
김윤배 (KR)
김윤배 (KR)
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Claims: