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| A Dynamic Time Warping Algorithm Based Transient Identification Method in Nuclear Power Plants |
| Received:November 22, 2018 Revised:February 25, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2019.02.017 |
| KeyWord:transient identification fatigue monitor nuclear power plant dynamic time warping |
| Author | Institution |
| BAI Xiao-ming |
1.Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu , China |
| WANG Xin-jun |
1.Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu , China |
| AI Hong-lei |
1.Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu , China |
| WEI Dong |
2.Nuclear and Radiation Safety Center, Beijing , China |
| ZHENG Lian-gang |
1.Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu , China |
| XIE Hai |
1.Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu , China |
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| Abstract: |
| Objective To identify the transients in the nuclear power plant effectively. Methods Based on the dynamic time warping algorithm, the similarity between the temperature, pressure and flow rate in the operational transient and these in the design transient was calculated, respectively. Meanwhile, an effective similarity for the transient was defined to represent the different weight factor of temperature/pressure and flow rate. After the effective similarities for all the design transients were calculated, the current operational transient can be classified in to the best similar design transient. Results The design transient of Hualong 1 nuclear power plant and virtual operation transient obtained based on disturbance of design transient verified that the method proposed in this paper could effectively classify the operation transient. In the verification, more than 95% transients could be identified correctly. Conclusion Based on the DTW based algorithm and effective similarity, a transient identification method is proposed in present paper, this method is effective and accurate, and can be used in the fatigue monitor system of nuclear power plant. |
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