HSGS Investigation for Limiting the Secondary Arc on UHV Parallel Lines
The HSGS characteristic for secondary arc limitation on UHV parallel lines is investigated versus singlephase to ground faults and cross-country faults,respectively by theoretical analysis and RTDS verification.The influential factors such as electrostatic induction,electromagnetic coupling,line length,HSGS single end closing and the secondary arc resistance are involved.The results show that secondary arc current and recovery voltage of cross-country faults are higher than that of single-phase to ground faults.The secondary arc current and recovery voltage increase with the increasing line length and load level.HSGS single end closing doesnt help extinguishing the arc,while the high secondary arc resistance does.The conclusion shows that HSGS with low resistance and double-end quick closing in middle and short lines could extinguish secondary arc effectively,therefore the single-phase reclosing succeeds.Advice would be provided for the construction of UHV transmission lines in China.
UHV, High-Speed Grounding Switch (HSGS) parallel lines, single-phase reclosing, arc current, recovery voltage
Zhang Xu Yan Xiaoqing Xu Zhenyu
North China Electric Power University Changping, Beijing ,102206
国际会议
沈阳
英文
802-805
2012-07-27（万方平台首次上网日期，不代表论文的发表时间）