1. Analysis on commutation failures in Shandong Multi-Infeed HVDC system;Li,2015
2. Analysis of ground surface potential distribution under unipolar operation mode of HVDC transmission lines;Liu,2007
3. Summary of bipolar operation situation of Tian–Guang DC power transmission system;Ding;Power Syst Technol,2003
4. Research on ground electrode current of high voltage direct current system in ground return status;Wang,2007
5. Calculation of DC current distribution in AC systems on ground electrode for HVDC;Tan,2007