Alternative feeder concepts in urban distribution networks

The paper considers various basic feeder schemes of urban distribution networks from the standpoint of economy, reliability, and technical limits. Presented are the mathematical models for the analysis of feeders’ annual costs, reliability performances, voltage drops and cable loading in normal and critical emergency situations. The suggested approach takes into account the uncertainty of various basic data by modeling them as grey inputs, which can have any value within the intervals of values experienced in practice. It was implied that adequate statistical data for the construction of probability distribution functions for uncertain parameters are missing, which is often the case. The proposed mathematical model could serve as a useful tool in planning new or expanding existing distribution networks. As a numerical illustration, the presented calculation methods have been applied for the analysis of the performances of the considered feeder schemes in the Belgrade area.