Performance Analysis and Improvement of Double Circuit EHV AC Transmission Lines by Increasing Surge Impedance Loading Level

Jitendra Jamnani, Varun Patel

2025

Abstract

The demand of Electrical Energy is continuously increasing due to the growth of society and industrialization and to fulfil this requirement, increase in power generation and its transmission at high efficiency is required. Extra high voltages are necessary to transfer large amount of power over linger distances as the power transfer limit is proportional to the square of rated voltage. Generally the power generating stations are far away from the distribution network and to connect the power surplus region to power deficit region we need long EHV AC double circuit transmission lines to carry large amount of power. But the long EHV AC transmission lines are limited by their SIL (Surge Impedance Loading) limit which is much below the thermal limit of conductor due to large inductive reactance of the line. SIL depends on various factors and geometrical arrangement of double circuit transmission lines i.e. bundle spacing, size of conductor, number of sub-conductors per phase, etc. This paper presents various methodologies to improve SIL level of EHV AC lines and also its effect on corona loss. MATLAB is used as platform for development of GUI based software to calculate and analyze the various parameters related to SIL and corona loss. The various double circuit configurations used for EHV AC transmission lines and its comparison is also presented.

Paper Citation

in Harvard Style

Jamnani J. and Patel V. (2025). Performance Analysis and Improvement of Double Circuit EHV AC Transmission Lines by Increasing Surge Impedance Loading Level. In Proceedings of the 3rd International Conference on Futuristic Technology - Volume 3: INCOFT; ISBN 978-989-758-763-4, SciTePress, pages 871-876. DOI: 10.5220/0013734200004664

in Bibtex Style

@conference{incoft25,
author={Jitendra Jamnani and Varun Patel},
title={Performance Analysis and Improvement of Double Circuit EHV AC Transmission Lines by Increasing Surge Impedance Loading Level},
booktitle={Proceedings of the 3rd International Conference on Futuristic Technology - Volume 3: INCOFT},
year={2025},
pages={871-876},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0013734200004664},
isbn={978-989-758-763-4},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 3rd International Conference on Futuristic Technology - Volume 3: INCOFT
TI - Performance Analysis and Improvement of Double Circuit EHV AC Transmission Lines by Increasing Surge Impedance Loading Level
SN - 978-989-758-763-4
AU - Jamnani J.
AU - Patel V.
PY - 2025
SP - 871
EP - 876
DO - 10.5220/0013734200004664
PB - SciTePress