School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, China

Biography: Professor Li Kaicheng mainly focuses on research on electromagnetic measurement, power quality analysis and control, electronic transformer, intelligent instrument etc. He teaches courses such as "Signals and Systems", "Sensors and Automatic Measurement", "Weak signal detection" and so on. He published more than 100 papers in domestic and international journals, and gained morn 10 patents and 5 government awards. He instructed more than 30 master's degree students and PhD students.

Speech Title: A Novel Denoising Algorithm for Power Quality Disturbance Based on Variational Mode Decomposition

Abstract: This paper proposes a denoising algorithm for power quality disturbance (PQD) based on variational mode decomposition (VMD). The noisy signal is decomposed into discrete numbers of modes by VMD firstly in this algorithm, and then the average periodic energy of each mode is calculated. Afterwards, the modes are reconstructed according to a preset threshold of the average periodic energy. Simulation studies are carried out based on different PQD to verify the proposed algorithm, compared with other algorithms. The results show that the proposed algorithm has a good denoising performance in denoising for PQD.

Keywords: Power quality disturbance, denoising, VMD, average periodic energy.