Comparative Study of Transmission Expansion Planning with Conventional and Unconventional High Surge Impedance Loading (HSIL) Lines
Bhuban Dhamala, Mona Ghassemi
Abstract
The strategic planning of transmission expansion is paramount in ensuring the reliability and efficiency of power systems, particularly in the context of growing electricity demand and the integration of renewable energy sources. This paper investigates the utilization of unconventional high surge impedance loading (HSIL) lines in transmission expansion planning (TEP) and offers a comparative analysis of their performance against conventional line-based TEP methods. Commencing with a 17-bus 500 kV test system known for its robust operation under normal and all single contingencies at different loading scenarios, the objective is to connect a new load at a new location. Meticulously examining and comparing the number of lines and right of way (ROW) required for both methods while maintaining uniform conductor weight per circuit, the effectiveness of unconventional HSIL lines within the TEP context is assessed.