Title :
Analysis of UHVDC transient overvoltage based on the actual control and protection strategy
Author :
Fengjiao Wang ; Haifeng Li ; Jinping Liu ; Wenhao Lu ; Wei Chen ; Qi Long
Author_Institution :
Sch. of Electr. Power, South China Univ. of Technol., Guangzhou, China
Abstract :
Improper coordination of ultra-high voltage direct current (UHVDC) protection and arrester parameter configuration may lead to high overvoltage above the insulation protection design level of arrester. Compared to high voltage direct current (HVDC) system, the UHVDC transmission system perplexes this problem due to its specificities-more complex structure, more operation modes, more transmission power and higher overvoltage level. Three typical overvoltage conditions are studied by theoretical analysis and simulation based on the actual control and protection strategy of Yunnan-Guangdong (YG) UHVDC transmission project. The simulation results show that the relationship between transmission power and the stress of V1-type arrester is nonlinear. Under different conditions, the effects of protection delay on the energy of neutral bus arresters may be opposite.
Keywords :
arresters; overvoltage protection; power system transients; UHVDC transient overvoltage; Yunnan-Guangdong transmission project; arrester parameter; high voltage direct current system; insulation protection design; neutral bus arresters; transmission power; ultra-high voltage direct current protection; Arresters; Delays; Insulation; Stress; Valves; Voltage control; Control and protection; Metal-zinc oxide arrester (MOA); Switching overvoltage; UHVDC;
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2014 IEEE PES Asia-Pacific
DOI :
10.1109/APPEEC.2014.7066153
