Abstract
In this paper, a new methodology is applied to optimize the geometry of conductors of overhead transmission lines (TL) with high precision and low computational cost. This methodology is based on the sensitivity analysis of the electrical charge of the transmission lines using the adjoint method. This information is used with the gradient method and the golden section algorithm to minimize the electric field at the ground level of three-phase TL with two cables per phase. The approximation using central finite differences to obtain sensitivity is adopted for validation and comparisons. The TL's with high surge impedance loading is obtained after the optimization process.
Highlights
The Brazilian country has continentality dimensions and needs to transmission energy from generator centers to consumer centers in different regions of the country
Once the surge impedance loading (SIL) is a constraint in the problem, it is expected that for more complex cases the constraints would be more
The results shows that the sensitivity analysis has the potential to be used in cases with a greater number of conductors per phase
Summary
The Brazilian country has continentality dimensions and needs to transmission energy from generator centers to consumer centers in different regions of the country. New methodologies has been developed on the last decades for to get TL with higher capacity of transmission energy than conventional ones [2]–[4]. The Russian researchers has been developed since 70’s an unconventional and highly viable alternative called high surge impedance loading (HSIL) lines [9]–[11]. This methodology have commissioned TL’s in operation on Russian and Brazilian territories [4], [12]
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