REN Shiduo,XIAO Hao,LI Yinhong.Practical setting principle of traveling wave protection for HVDC power transmission line[J].Electric Power Automation Equipment,2019,39(09):54-60.
REN Shiduo,XIAO Hao,LI Yinhong.Practical setting principle of traveling wave protection for HVDC power transmission line[J].Electric Power Automation Equipment,2019,39(09):54-60.DOI: 10.16081/j.epae.201909031.
Practical setting principle of traveling wave protection for HVDC power transmission line
The existing traveling wave protection is still with the problems of incorrect setting and inefficiency of setting calculation,since the lack of empirical unified setting principle. On this basis,the practical setting principle of traveling wave protection for HVDC power transmission line is proposed. Considering the different types of internal and external faults in HVDC power transmission lines,the dynamic response characteristics of voltage change ratio d
U
d
/d
t
,voltage variation Δ
U
d
and current variation Δ
I
d
are analyzed and the function of the travelin
g wave protection criterions based on d
U
d
/d
t
,Δ
U
d
,Δ
I
d
are revealed. Consi-dering the requirements of traveling wave protection for sensitivity and selectivity,a practical setting principle of traveling wave protection is proposed. The validity of the proposed criterion is verified by PSCAD/EMTDC simulation platform.
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