Title :
Very fast transient overvoltage analysis for 400kV GIS
Author :
Wong, H.K. ; Shihe Chen
Author_Institution :
Asset Management Department, Power Systems Business Group, CLP Power Hong Kong Limited, Hong Kong
Abstract :
The very fast transient overvoltage (VFTO) produced during isolator switching operation in EHV GIS substations could impose a potential risk of insulation breakdown in the equipment connected directly to the GIS. A quantitative assessment of the expected VFTO against the VFTO withstand capability of the concerned EHV equipment is necessary for power companies in assessing the risk and formulating appropriate remedial measures to mitigate the risk without unduly limiting the flexibility of switching operations.
Conference_Titel :
Advances in Power System Control, Operation and Management (APSCOM 2009), 8th International Conference on
Conference_Location :
Hong Kong, China
DOI :
10.1049/cp.2009.1739
