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2. Pilot protection method for DC lines based on included angle cosine of fault current component;Zhou;Automation of Electric Power Systems,2018
3. VSC-MTDC oriented high reliable permissive pilot protection;Wei,2019
4. A Pilot Protection Scheme of DC Lines for Multi-Terminal HVDC Grid
5. Fast fault detection scheme for multiterminal MMC-HVDC based on novel fault directional criterion;Yu,2021