volume | PIER Journals

Abstract

In the spatial dimension, the variation of the wind speed along the overhead transmission line makes the conductor temperature and line parameter show a nonuniform distribution characteristic, which has an important influence on the operating status of the system. In order to describe the actual situation more accurately, a line cutting model based on the wind speed variation along the line is proposed. This paper proves the application value of the model by using a typical 4-bus system. From the two aspects of the power flow and the maximum power transmission capacity, we contrast the line cutting model with the traditional models, indicating that the cutting model is closer to the actual situation of the system.

1. Douglass, D. A., "Weather-dependent versus static thermal line ratings," IEEE Transactions on Power Delivery, Vol. 3, No. 2, 742-753, 1998.
doi:10.1109/61.4313

2. Heckenbergerova, J., P. Musilek, and K. Filimonenkov, "Assessment of seasonal static thermal ratings of overhead transmission conductors," 2011 IEEE Power and Energy Society General Meeting, 1-8, 2011.

3. Douglass, D. A. and A. Edris, "Real-time monitoring and dynamic thermal rating of power transmission circuits," IEEE Transactions on Power Delivery, Vol. 11, No. 3, 1407-1418, 1996.
doi:10.1109/61.517499

4. Fu, J., D. J. Morrow, S. Abdelkader, and B. Fox, "Impact of dynamic line rating on power systems," UPEC 2011 46th International Universities’ Power Engineering Conference, 1-5, 2011.

5. Xie, Z. H., "Calculation and analysis of wind speed in design of overhead transmission line in mountain area," Sichuan Electric Power Technology, Vol. 38, No. 3, 30-32, 2015.

6. Li, T. W., J. H. Zhao, Y. F. Cai, B. Luo, and L. Liu, "Analysis on design wind speed of transmission lines for coastal region of china southern power grid," Southern Power System Technology, Vol. 9, No. 6, 49-53, 2015.

7. Rahman, M., M. Kiesau, and V. Cecchi, "Investigating the impacts of conductor temperature on power handling capabilities of transmission lines using a multi-segment line model," SoutheastCon 2017, 1-7, 2017.

8. Zhang, H., X. S. Han, and Y. L. Wang, "Analysis on current carrying capacity of overhead lines being operated," Power System Technology, Vol. 32, No. 14, 31-35, 2008.

9. Seppa, T. O., "Guide for selection of weather parameters for bare overhead conductor ratings," CIGRE Technical Brochure, 299, 2006.

10. Cecchi, V., A. S. Leger, K. Miu, and C. O. Nwankpa, "Incorporating temperature variations into transmission-line models," IEEE Transactions on Power Delivery, Vol. 26, No. 4, 2189-2196, 2011.
doi:10.1109/TPWRD.2011.2159520

11. Cecchi, V., K. Miu, A. S. Leger, and C. Nwankpa, "Study of the impacts of ambient temperature variations along a transmission line using temperature-dependent line models," Power and Energy Society General Meeting, 1-7, 2011.

12. Grainger, J. J., W. D. Stevenson, and Jr., Power System Analysis, McGraw-Hill College, 1994.

13. Cecchi, V., M. Knudson, and K. Miu, "System impacts of temperature-dependent transmission line models," IEEE Transactions on Power Delivery, Vol. 28, No. 4, 2300-2308, 2013.
doi:10.1109/TPWRD.2013.2276757

14. Zhang, Q. P. and Z. Y. Qian, "Study on real-time dynamic capacity-increase of transmission line," Power System Technology, Vol. 29, No. 19, 18-21, 2005.

Dr. Yang Mo

Dr. Xiaofeng Zhou

Dr. Yanling Wang

Dr. Likai Liang