Affiliations: [a] Hebi Institute of Engineering and Technology, Henan Polytechnic University, Hebi, Henan, China | [b] Hebi Polytechnic, Hebi, Henan, China
Correspondence:
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Corresponding author: Min Zhao, Hebi Institute of Engineering and Technology, Henan Polytechnic University, Hebi 458030, Henan, China. E-mail: [email protected].
Abstract: Finding the head of a traveling wave is challenging because an overhead line-cable hybrid transmission line’s wave impedance is not constant. Because of this, it is difficult to measure the hybrid transmission line precisely. This leads to the proposal of a hybrid transmission line fault location algorithm, which combines VMD energy entropy for training support vector machines and traveling wave law graphs. The VMD energy entropy is first used to train SVM to identify the faulty section. The method of traveling waves with a single end is utilized to precisely fix the fault distance within the faulty segment when the type of traveling wave has been identified. The simulation results demonstrate that the method provides precise measurements and is effective for hybrid transmission lines with a range of fault distances and grounding resistances.
Keywords: Fault location, hybrid line, wavelet transform modulus maxima, VMD energy entropy, support vector machine
