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http://dx.doi.org/10.5207/JIEIE.2007.21.5.112

Dip Estimation for Overhead Transmission Conductor using Catenary Angle  

Kim, Sung-Duck (한밭대학교 전기.전자.제어공학부)
Sohn, Hong-Kwan (전기연구원 전력연구단)
Jang, Tae-In (한국전력공사 전력연구원 전력계통연구실)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.21, no.5, 2007 , pp. 112-119 More about this Journal
Abstract
Under normal operating condition, the conductor of overhead transmission line could be always hold it's clearance within the safety margin that is specified in the line design guide of power company. Hence it may be very important to measure/or monitor the dip of the conductor, when building a new line, re-tensioning for an aged conductor, or monitoring dynamic line rating to maximize power capability. In this paper, we suggest a new method to estimate the dip and tension by catenary angle of the conductor. Since most conductors in overhead transmission lines show typical catenary curves, it can be uniquely determined the catenary curve for the conductor from the catenary angle at tower. Based on the catenary curve, the dip or horizontal tension can be easily estimated. Through some simulation and simple experimental results, it is verified that the suggested method can be effectively applied to measure/or monitor conductor dips and tensions in the overhead transmission lines.
Keywords
Overhead Conductor; Dip Estimation; Catenary Angle; Transmission Line;
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1 C. Mensah-Bonsu, and G. T. Heydt, 'Real-time digital processing of GPS measurements for transmission engineering', IEEE Trans. on Power Delivery, Vol. 18, No. 1, pp. 177-182, Jan 2003   DOI   ScienceOn
2 Draft standard for calculating the current-temperature relationship for bare overhead conductors, IEEE Standard P738, 1999
3 T. O. Seppa, 'Accurate ampacity determination: temperature-sag model for operational real time ratings', IEEE Trans. on Power Delivery, Vol. 10, No. 3, pp. 1460-1470, July 1995   DOI   ScienceOn
4 J. S. Engelhardt, and S.P. Basu, 'Design, installation and field experience with an overhead transmission dynamic line rating system', Proceedings of IEEE, Transmission and Distribution, pp. 366-370, 1996
5 Tension Monitor [Online], Available : http://www.cat-1.com/
6 Transit를 이용한 이도측량 프로그램, 한국전력공사, 2000
7 B. Chairmont, Video Sagometer, Lenox, MA: EPRI Solutions
8 R. G. Olsen and K. S. Edwards, 'A new method for real time monitoring of high voltage transmission line conductor sag', IEEE Trans. on Power Delivery, Vol. 17, No. 4, pp. 1142-1152, 2002   DOI   ScienceOn
9 STACIR/AW 인바강선의 가열연화 특성 및 경년열화 특성 연구, 중간보고서, KEPRI Report, TM01PJ13.M2003.416, 2003. 10
10 가공선 이도 설계기준 - 1211, 한국전력공사, 2003
11 이도 설계 프로그램, Tower+, 한국전력공사, 2003. 12