2012/04/02 by Zhenghao Zhang, Zhang, Zhenghao, Matthew Trinkle +6
Computer Science · Engineering · #Cryptography and Security (cs.CR) #FOS: Computer and information sciences #Network Time Synchronization Technologies #Power Systems Fault Detection #Smart Grid Security and Resilience #cs.CR
paper · pdf · doi:10.48550/arxiv.1204.0462
arxiv created 2012/04/02 · openalex publication_date 2012/04/02 · arxiv updated 2012/04/03 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
A novel time synchronization attack (TSA) on wide area monitoring systems in smart grid has been identified in the first part of this paper. A cross layer detection mechanism is proposed to combat TSA in part II of this paper. In the physical layer, we propose a GPS carrier signal noise ratio (C/No) based spoofing detection technique. In addition, a patch-monopole hybrid antenna is applied to receive GPS signal. By computing the standard deviation of the C/No difference from two GPS receivers, a priori probability of spoofing detection is fed to the upper layer, where power system state is estimated and controlled. A trustworthiness based evaluation method is applied to identify the PMU being under TSA. Both the physical layer and upper layer algorithms are integrated to detect the TSA, thus forming a cross layer mechanism. Experiment is carried out to verify the effectiveness of the proposed TSA detection algorithm.