ABSTRACT
In the design process of a Medium Voltage (MV) grid, an ecotechnic assessment must cover not only the technical matter but also the economic effect. An MV grid is a set of facilities including a conductor, insulator strings and connection devices. Existing operations indicate that the losses of a grid are approximately over 50% of the total network losses. Because of the importance of these losses, it must be taken into account in the design as well as in the operating procedure of the network. Certainly, it is a key factor which significantly influences an ecotechnic assessment. However, the application of the energy loss in ecotechnic assessment always gets the significant bias because of conductors’ physical properties. This paper focuses on analyzing this kind of difference, which is called the skin effect. An algorithm based on Matlab calculations is utilized and the results are compared with real data measurement in order to ascertain an elastic factor corresponding to each line’s cross section. The series of factors will help the power utilities to have a better ecotechnic assessment in the early stages of grid design.
