1. Zhong CHEN, Heng WU, Heyan HUANG et al (2011) Cause analysis and improvement measure of ± 800 kV DC wall bushing occurring flashover during overvoltage withstand test. High Volt Eng 37(9):2133–2139
2. Licheng LI (2005) Technology characteristic and project application of UHVDC. Autom Electr Power Syst 29(24):5–6
3. ZHANG Lina (2014) Study on electric field distribution of ± 1000 kV DC wall bushing. Dissertation, Shandong University
4. Guohong PAN, Huayan ZHU (2013) Key technologies research for the installation and field test of ± 800 kV wall bushing. High Volt Appar 49(2):98–102
5. Chun SHANG (2006) Development of ultra-high voltage transmission technology in China southern power grid. High Volt Eng 32(1):35–37