An intelligent hybrid methodology of on-line system-level fault diagnosis for nuclear power plant

Min-jun Peng; Hang Wang; Shan-shan Chen; Genglei Xia; Yong-kuo Liu; Xu Yang; Abiodun Ayodeji

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자료유형: 학술저널

저자정보: Min-jun Peng Hang Wang Shan-shan Chen Genglei Xia Yong-kuo Liu Xu Yang Abiodun Ayodeji

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제50권 제3호

발행연도: 2018.1

수록면: 396 - 410 (15page)

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To assist operators to properly assess the current situation of the plant, accurate fault diagnosis methodologyshould be available and used. A reliable fault diagnosis method is beneficial for the safety ofnuclear power plants. The major idea proposed in this work is integrating the merits of different faultdiagnosis methodologies to offset their obvious disadvantages and enhance the accuracy and credibilityof on-line fault diagnosis. This methodology uses the principle component analysis-based model andmulti-flow model to diagnose fault type. To ensure the accuracy of results from the multi-flow model, amechanical simulation model is implemented to do the quantitative calculation. More significantly,mechanism simulation is implemented to provide training data with fault signatures. Furthermore, oneof the distance formulas in similarity measurementdMahalanobis distancedis applied for on-line failuredegree evaluation. The performance of this methodology was evaluated by applying it to the reactorcoolant system of a pressurized water reactor. The results of simulation analysis show the effectivenessand accuracy of this methodology, leading to better confidence of it being integrated as a part of thecomputerized operator support system to assist operators in decision-making.

참고문헌 (28)

참고문헌 신청

IAEA / 2013 / Diagnostic and Prognostic Techniques in Monitoring Structures, Systems and Components in Nuclear Power Plants, No.NP-T-3.14

A.C. Cilliers / 2011 / Fault detection and characterisation in Pressurized Water Reactors using real-time simulations / Ann. Nucl. Energy 38:1196~1205

K. Thomas / 2015 / A Computerized Operator Support System Prototype, INL/EXT-15-36788

Y.-K. Liu / 2014 / Improvement of fault diagnosis efficiency in nuclear power plants using hybrid intelligence approach / Prog. Nucl. Energy 76(76):122~136

H. Wang / 2016 / Improved methods of online monitoring and prediction in condensate and feed water system of nuclear power plant / Ann. Nucl. Energy 90(4):44~53

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