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http://dx.doi.org/10.7471/ikeee.2014.18.4.442

Application and Evaluation of Emergency Rates in Overhead Transmission Lines  

Kim, Sung Duck (Dept. of Electronic and Control Eng. Hanbat National University)
Publication Information
Journal of IKEEE / v.18, no.4, 2014 , pp. 442-446 More about this Journal
Abstract
A method for applying emergency ratings to improve the reliability of power supply in ACSR overhead transmission lines is described in this paper. Due to re-regulate power industry, most power companies worldwide as well KEPCO have been searching for only economical strategies without new investment. Power demand was rapidly increasing, however, generation amount did not follow sufficiently. Hence in order to increase the transmission capacity for the existing transmission lines in case of peak load, or contingency in transmission lines, an application method of emergency ratings such as short or long term rating is proposed. If applying long term emergency rating instead of static line rating for the period of a peak load, power transmission can be increased to 10 % or more. Furthermore, it was shown that emergency rating can be effectively used in the contingency of double-circuit transmission lines and/or overload cases.
Keywords
ACSR Conductor; Emergency Rating; Overhead Transmission Lines; Short/Long Term Rating; Static Line Rating; Dynamic Line Rating;
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  • Reference
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