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논문 기본 정보

자료유형
학술대회자료
저자정보
Moath Kassim (Kyung Hee Univ.) Gyunyoung Heo (Kyung Hee Univ.)
저널정보
대한전기학회 정보 및 제어 논문집 ICS´ 2016 정보 및 제어 심포지엄 논문집
발행연도
2016.4
수록면
71 - 74 (4page)

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For better accuracy and healthy monitoring, redundant signals usually used in nuclear power reactors and research reactors to measure plant conditions. A Cross Calibration (CC) method is widely used to evaluate sensors performance and help operators and maintenance staff to determine the proper time for sensor calibration. This paper presents an online calibration monitoring technique that can check sensors’ signals deviation including wide range of missing data, particularly for small-size research reactors which have a weak signal validation algorithm comparing with large-size power reactors. The HANARO (Hi-flux Advanced Neutron Application Reactor) which is an operating research reactor at KAERI (Korea Atomic Energy Research Institute) provided data sets to be analyzed, and then a statistical algorithm was built to solve the problem using the Weighted Average (WA) method by assigning weight percentage for each sensor’s signal point independently, and skipping the unknown values. For making it more dynamic and flexible, points of signal were averaged with their weigh percentage to avoid including the number of sensors in the calculation. It is assumed that at least one sensor is functioning well within its operation limits, so averaging was done and an acceptable averaging band was proposed to be compared with all sensors’ signals, where the out of band signal identified as a sensor defect. And, as it is expected, the in-house code developed will analyze HANARO data or any data that has missing values problem, and then alarm message will be initiated as a result to show if any sensor really needs calibration. This code excluded the case that all sensors are deviated together.

목차

Abstract
1. Introduction
2. Methodology
3. Analysis Results
4. Conclusions
5. References

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