Study on power transmission line ampacity calculation with nonlinear AC resistance

DOI

10.2991/eesed-16.2017.23How to use a DOI?

Keywords

Power Transmission Line; Ac Resistance; Ampacity Calculation; Parameter Estimation

Abstract

As the rapid development of renewable energy, energy sectors have to increase the load transfer capacity of transmission line. In order to calculate the line ampacity accurately, it is necessary to establish a valid mathematical model for line AC resistance. However, the simplified AC resistance model, which is current commonly used, does not take into account the nonlinear impact of current variation. In this paper, an modified AC resistance model regarding current-carrying variation is proposed, and the parameters in the proposed model are estimated by the experiment data. Combining IEEE standard and proposed model, the ampacity of conductor LGJ-120/25 is calculated and analyzed. The calculated results indicates that the ampacity obtained by proposed model is less than ampacity obtained by simplified AC resistance model. That means the ampacity would be overestimated and the security of transmission line would be reduced when the nonlinear impact of current variation is ignored.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Hai-Jun Xue
AU  - Xu-Dong Zhang
PY  - 2016/08
DA  - 2016/08
TI  - Study on power transmission line ampacity calculation with nonlinear AC resistance
BT  - 2nd Annual International Conference on Energy, Environmental & Sustainable Ecosystem Development (EESED 2016)
PB  - Atlantis Press
SP  - 180
EP  - 185
SN  - 2352-5401
UR  - https://doi.org/10.2991/eesed-16.2017.23
DO  - 10.2991/eesed-16.2017.23
ID  - Xue2016/08
ER  -