TY - JOUR
T1 - Influence of lightning surges on widebandfrequency model of LCC-UHVDC converter station
AU - Masood, Bilal
AU - Guobing, Song
AU - Hou, Junjie
AU - Zhanfeng, Fan
AU - Jinhai, Huang
N1 - Publisher Copyright:
© 2020 The Institution of Engineering and Technology.
PY - 2020/11/13
Y1 - 2020/11/13
N2 - One of the leading causes of power system outages is lightning surges. A precise calculation of lightningovervoltages across insulators has vital significance for the investigation of lightning outages. This study investigates the impactof different lightning surges for the analysis of transient frequency characteristics of line commutated converter (LCC) based ±800?kV ultra-high-voltage direct current (UHVDC) converter station by developing a wideband (WB) model of the converterstation. The influence of lightning flashover criterion (LFC) of double exponential and Heidler surges methods on insulator/gapfor precise lightning withstand level is examined. An analytical comparison for LFC of insulator/gap installed at high altitudetransmission lines by incorporating the IEEE volt/time curve, CIGRE leader propagation (LP) and improved LP methods ispresented. The proposed WB model explores the novel attributes of high-frequency transfer characteristics and the couplingmechanism of transient frequencies passing through the converter station. Moreover, the effect of internal frequency dependantDC line faults on the WB model is examined. The analysis presented here aims to investigate issues like overvoltage,electromagnetic disturbance prediction, insulation design of the equipment and standardisation of sensitivity issues that arebeing faced by the present relay protection systems.
AB - One of the leading causes of power system outages is lightning surges. A precise calculation of lightningovervoltages across insulators has vital significance for the investigation of lightning outages. This study investigates the impactof different lightning surges for the analysis of transient frequency characteristics of line commutated converter (LCC) based ±800?kV ultra-high-voltage direct current (UHVDC) converter station by developing a wideband (WB) model of the converterstation. The influence of lightning flashover criterion (LFC) of double exponential and Heidler surges methods on insulator/gapfor precise lightning withstand level is examined. An analytical comparison for LFC of insulator/gap installed at high altitudetransmission lines by incorporating the IEEE volt/time curve, CIGRE leader propagation (LP) and improved LP methods ispresented. The proposed WB model explores the novel attributes of high-frequency transfer characteristics and the couplingmechanism of transient frequencies passing through the converter station. Moreover, the effect of internal frequency dependantDC line faults on the WB model is examined. The analysis presented here aims to investigate issues like overvoltage,electromagnetic disturbance prediction, insulation design of the equipment and standardisation of sensitivity issues that arebeing faced by the present relay protection systems.
UR - https://www.scopus.com/pages/publications/85096360646
U2 - 10.1049/iet-gtd.2020.0641
DO - 10.1049/iet-gtd.2020.0641
M3 - 文章
AN - SCOPUS:85096360646
SN - 1751-8687
VL - 14
SP - 5114
EP - 5122
JO - IET Generation, Transmission and Distribution
JF - IET Generation, Transmission and Distribution
IS - 22
ER -