View source for Projects:2021s1-13005 Determining Dynamic Line Ratings of Over-Head Transmission Conductors based on Line Tension

== Project Team Members ==
* Andrew Gross
* Michael Iuliano
* Taimur Abdullah Said Al-Sanaidi

== Staff ==
Principal Supervisor: Associate Professor Wen Soong<br>
Co-Supervisor: Research Officer David Vowles<br>
ElectraNet Sponsors:

== Abstract ==
This project sponsored by ElectraNet aims to develop a tension-based model to dynamically alter line ratings on transmission lines. This will allow for existing infrastructure to have a longer lifespan.

== Introduction ==
The 2021 iteration of this project continues on from the work completed in the [https://projectswiki.eleceng.adelaide.edu.au/projects/index.php/Projects:2020s1-1540_Determining_Transmission_Overhead_Conductor_Ratings_based_on_Line_Tension project of the same name]{{cn}} 2020 by Adrian Barone and James Smithson.


== Thermal Factors ==
[[File:Overhead Conductor Heat Balance ENetProj2021.png|frame|left|baseline|upright=2|The various effects of heating and cooling on an overhead conductor.]]
There are four main factors when considering the various thermal effects on an overhead conductor. These are:<br>
* [https://en.wikipedia.org/wiki/Joule_heating Current Heating] - Due to resistive and magnetic losses of the conductor material while it is conducting current.  The resistive losses are due to both the conducting material and the increase in the resistance of the conductive material as its temperature increases. 
* [https://en.wikipedia.org/wiki/Solar_energy Solar Heating] - This is heating due to direct radiation from the sun. Typically, direct solar radiation is difficult to calculate as direct and diffuse solar radiation has various challenges in measuring it (expensive for sensors, need regular attention). In some cases where this data isn’t available, global solar radiation is used. 
* [https://en.wikipedia.org/wiki/Convective_heat_transfer Convective Cooling] - Convective Cooling occurs per the effect of the air surrounding the conductor heating, reducing the density of the air around the conductor causing cooler air replaces it. 
* [https://en.wikipedia.org/wiki/Radiative_cooling#:~:text=Radiative%20cooling%20is%20the%20process,and%20continuously%20emits%20electromagnetic%20radiation. Radiative Cooling] - This is the effect of the material emitting thermal radiation, losing heat in the process. A simplified equation is used as the radiation loss is a small fraction of the total cooling.
We do not consider [https://en.wikipedia.org/wiki/Corona_discharge#:~:text=A%20corona%20discharge%20is%20a,of%20plasma%20around%20the%20electrode. Corona Heating] or [https://en.wikipedia.org/wiki/Evaporation Evaporative Cooling] as these are unlikely to occur under typical operation of the conductor. 
<br>
== Useful Links ==
[https://en.wikipedia.org/wiki/Help:Cheatsheet Formatting]<br>
[https://projectswiki.eleceng.adelaide.edu.au/projects/index.php/Projects:2018s1-101_Classification_of_Network_Traffic_Flows_using_Deep_and_Transfer_Learning Winner 1 2018]<br>
[https://projectswiki.eleceng.adelaide.edu.au/projects/index.php/Projects:2018s1-192_Karplus-Strong_Synthesis_of_Sound Winner 2 2018]