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Modeling Mutual Intraceability of Mobile RFID Systems Using BRS-based Approach
He Jialiang,Ding Jifeng,Xu Xiaoke,Xu Zhiqiang 보안공학연구지원센터 2016 International Journal of Hybrid Information Techno Vol.9 No.2
Intraceability is the most important aspect of RFID security. Mobile RFID readers are used more and more widely, the privacy of mobile reader privacy holders should be considered. In this paper, a BRS-based approach for modeling mutual intraceability of mobile RFID systems is provided. Elements in a RFID protocol can be represented as bigraphs, communications between elements can be represented as reaction rules. RFID intraceability can be represented as behavioral congruence. We take a RFID air interface protocol for mobile RFID systems as a case study and show the usability of this approach.
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Capacitor voltage change rate based fault localization strategy for modular multilevel converters
Jun Hang,Chengqiang Zhang,Yixiao Wang,Shichuan Ding,Jifeng Zhao 전력전자학회 2024 JOURNAL OF POWER ELECTRONICS Vol.24 No.3
With the widespread application of the modular multilevel converter (MMC) in the fields of electronic and electrical engineering, the open-circuit failure problem of the power devices in submodules (SMs) has become the main factor restricting its stable operation. Therefore, power device open-circuit fault diagnosis is widely studied as the main means to ensure the ongoing and stable operation of MMCs. The existing fault diagnosis approaches on the basis of voltage of capacitor change are only applicable to fault diagnosis under active power conditions. However, in reactive power scenarios, MMC systems have very important applications, such as power grid steady-state reactive power regulation and transient reactive power support. Therefore, an effective fault diagnosis method based on the capacitance voltage change rate is put forward for the diagnosis of faults under reactive conditions. This method diff erentiates the capacitor voltage and compares it with the threshold to diagnose faults under reactive power operation. The proposed method is simulated using PSCAD simulation software. Simulation results verify the practicability of the presented approach.
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