Power quality disturbance detection method based on modified S-transform

Shuyi Li; Mengda Li; Lijiao Li; Zhiquan Li

doi:10.1117/12.2644569

10 November 2022 Power quality disturbance detection method based on modified S-transform

Shuyi Li, Mengda Li, Lijiao Li, Zhiquan Li

Proceedings Volume 12301, 6th International Conference on Mechatronics and Intelligent Robotics (ICMIR2022); 1230120 (2022) https://doi.org/10.1117/12.2644569
Event: 6th International Conference on Mechatronics and Intelligent Robotics, 2022, Kunming, China

Abstract

All kinds of distributed devices and intelligent devices are connected to the power system, which makes the power system more and more sensitive to the fluctuation of power, which leads to the identification and processing of power quality disturbance (PDQ) becoming more and more important. Aiming at the problem of composite disturbance classification and identification with multiple single power quality disturbances, a composite power quality disturbance identification method based on improved S-transformation is proposed in this paper ¹. First, for higher time-frequency resolution, an improved S-transform with new window width adjustment coefficients is introduced. Then use S transform and wavelet transform to extract the features of disturbance signal, and compare the effect of three methods on feature extraction. Finally, the simulation results show that the method can effectively classify the interfering signals, and the energy concentration and resolution are greatly improved.

Citation Download Citation

Shuyi Li, Mengda Li, Lijiao Li, and Zhiquan Li "Power quality disturbance detection method based on modified S-transform", Proc. SPIE 12301, 6th International Conference on Mechatronics and Intelligent Robotics (ICMIR2022), 1230120 (10 November 2022); https://doi.org/10.1117/12.2644569

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