1. Pilot protection of HVDCpower transmission lines based on variation characteristics of firing angle;Xinchi;Electric Power Automation Equipment,2020
2. Review and prospect on trans-mission line protection in flexible DC system;Liu;Power System Technology,2021
3. Review of DC fault protectionmethods for the MMC based DC grid;Yang
4. Transient powerbased single-end protection for HVDC transmission line;Hou;Automation of Electric Power Systems,2019
5. Research on Fault Analysis and Protection Principles of DC Lines in Multi-terminal Hybrid HVDC system;Zhang;South China University Of Technology,2019