Title :
The research on the affection of the Qinghai-Tibet HVDC transmission system upon operating characteristic of the line protection in Qing-Hai AC electrical power system
Author :
Li Hongzhi ; Wang Ning Xia ; Guo Junru
Author_Institution :
Qinghai Electr. Power Corp., Xining, China
Abstract :
Based on ±400 kV Qinghai-Tibet HVDC transmission system, the paper build a closed loop simulation system used HyperSim system and HVDC control protection device. Used this system, the paper researched the impedance characteristics and harmonic constitute of Qinghai A.C. electrical power system in different faults, analyzed the proportion of harmonic component in voltage and electric while various faults at different point, and studied the impaction of directional protection, differential protection and distance protection for the AC transmission line according to the characteristics of protection operation.
Keywords :
HVDC power transmission; closed loop systems; power transmission faults; power transmission protection; relay protection; AC transmission line; HVDC control protection device; HyperSim system; Qing-Hai AC electrical power system; Qinghai-Tibet HVDC transmission system; closed loop simulation; differential protection; directional protection; distance protection; harmonic component; line protection; operating characteristic; voltage -400 kV to 400 kV; HVDC; closed loop test; harmonic component; line protection;
Conference_Titel :
Electricity Distribution (CICED), 2012 China International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4673-6065-4
Electronic_ISBN :
2161-7481
DOI :
10.1109/CICED.2012.6508541
