Abstract
The symmetrical impedances of a transmission line are important parameters for both accurate fault calculation and reliable protective relay setting. While overhead line impedance calculation results generally agree well with measured impedances at reasonable accuracy, underground transmission line impedances do not agree well very often. So there has been an urgent need for better guideline to determine which impedance should be used among measured and calculated cable transmission line impedances. In this paper, various post-fault analysis of 154kV cable transmission lines were conducted to improve the current KEPCO guideline based on sound technical background as possible.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
