Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education (Shandong University), Jinan 250061, Shandong Province, China,Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education (Shandong University), Jinan 250061, Shandong Province, China,Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education (Shandong University), Jinan 250061, Shandong Province, China,Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education (Shandong University), Jinan 250061, Shandong Province, China,Weifang Electric Power Company, Weifang 261000, Shandong Province, China,Jinan Electric Power Company, Jinan 250061, Shandong Province, China.A novel directional pilot protection method for VSC-MTDC based on the initial forward and backward travelling wave head[J].International Journal of Electrical Power and Energy Systems,2019.