Role of voltage level and network losses in tnep solution

الملخص EN

Transmission network expansion planning (TNEP) is an important component of power system planning.

It determines the characteristic and performance of the future electric power network and influences the operation of the power system directly.

Up till now, various methods have been presented for solution of the static transmission network expansion planning (STNEP) problem.

However, in all of these methods, STNEP problem has been solved regardless to voltage level of transmission lines and role of voltage level in reducing annual losses of the network.

In this paper, STNEP is studied considering voltage level and network losses using decimal codification based genetic algorithm (DCGA).

Genetic Algorithms (GAs) have demonstrated the ability to deal with non-convex, nonlinear, mixed-integer optimization problems, like the TNEP problem, better than a number of mathematical methodologies.

The proposed method is tested on Garvers 6-bus network and an actual transmission network of the Azerbaijan regional electric company, Iran to illustrate its robust performance.

The results show that considering the network losses in a power system with different voltage levels, decreases the operational costs considerably and the network satisfies the requirement of delivering electric power more safely and reliably to load centers.