2020/03/23 by Vaibhav Nougain, Sukumar Mishra, Nougain, Vaibhav +5
Engineering · #FOS: Electrical engineering #HVDC Systems and Fault Protection #High-Voltage Power Transmission Systems #Power Systems Fault Detection #Systems and Control (eess.SY) #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2003.10145
openalex publication_date 2020/03/23 · openalex created_date 2022/07/26 · openalex updated_date 2026/07/28
We propose a localized protection scheme based on modal analysis in\nmulti-terminal modular multilevel converter (MMC) based high voltage DC (HVDC)\nsystems. The paper addresses the issues of localized protection scheme based DC\nfault identification, such as differentiating between external and internal\nfaults, classification of type of fault contingency i.e., pole to pole\n(\PTP) or pole to ground (\PTG) for high impedance faults\n(HIFs) in the system. The scheme works on equivalent network of multi-terminal\nMMC-HVDC system for a DC fault, using phase-modal transformation to analyse\nline-mode and zero-mode voltage across the current limiting reactor (CLR) for\ndifferent possible contingencies in the presence of fault resistance. The\nprotection scheme is validated to be reliable for HIFs and in the presence of\nWhite Gaussian Noise (WGN) in measurement. The scheme operation is validated to\nbe intact for varying fault location, fault resistances and system transients.\n