Abstract
Existing power cyber-physical system (CPS) risk prediction results are inaccurate as they fail to reflect the actual physical characteristics of the components and the specific operational status. A new method based on dependent Markov chain for power CPS risk area prediction is proposed in this paper. The load and constraints of the non-uniform power CPS coupling network are first characterized, and can be utilized as a node state judgment standard. Considering the component node isomerism and interdependence between the coupled networks, a power CPS risk regional prediction model based on dependent Markov chain is then constructed. A cross-adaptive gray wolf optimization algorithm improved by adaptive position adjustment strategy and cross-optimal solution strategy is subsequently developed to optimize the prediction model. Simulation results using the IEEE 39-BA 110 test system verify the effectiveness and superiority of the proposed method.
Original language | English |
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Article number | 9079826 |
Pages (from-to) | 82844-82854 |
Number of pages | 11 |
Journal | IEEE Access |
Volume | 8 |
DOIs | |
Publication status | Published - 2020 |
Bibliographical note
Funding Information:This work was supported in part by the Key Projects of the National Natural Science Foundation of China under Grant 51437003, and in part by the Jilin Science and Technology Development Plan Project of China under Grant 20160623004T and Grant 20180201092GX.
Publisher Copyright:
© 2013 IEEE.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
Keywords
- cross-adaptive grey wolf optimization
- Cyber-physical system
- Markov chain
- risk region prediction
ASJC Scopus subject areas
- General Computer Science
- General Materials Science
- General Engineering