李蕊.基于SSHM模型的智能电能表操纵行为检测算法研究[J].电测与仪表,2023,60(9):188-194. Li Rui.Research on the detection algorithm of rigged behaviors in smart meters based on SSHM model[J].Electrical Measurement & Instrumentation,2023,60(9):188-194.
基于SSHM模型的智能电能表操纵行为检测算法研究
Research on the detection algorithm of rigged behaviors in smart meters based on SSHM model
The abnormal state caused by the manipulation of smart meters will not only lead to serious economic losses, but also lead to the misjudgment of the grid’s state, which affects the security of the grid. Based on super state hidden Markov(SSHM) model, a method for detecting and locating the operation behaviors of smart meters is proposed. Firstly, the super state is introduced into the hidden Markov model. According to the sparsity of the transfer matrix and observation matrix in SSHM Model, an improved Viterbi algorithm is proposed, which can reduce the difficulty of data storage and measurement. Secondly, the key performance parameters of SSHM model are evaluated and optimized by the set which containing the typical rigged behaviors, thus SSHM model with high accuracy is established; Finally, compared with other methods, the case study proves that this method is an effective means to detect and locate the rigged behaviors of smart meters with high accuracy.
