Practical modeling of losses at pattern distribution network and its accuracy evaluation

It is necessary to plan for estimating and determining the power and energy losses to decrease the losses in distribution companies. It is not simply possible to obtain a comprehensive model and satisfy with theoretical equations, because there are different uses and special environmental conditions in different points of system. Usually, there are differences between accounted amounts of losses and determined amounts. Therefore, dependence on available models and their usage for distribution system, especially for feeders, which have low load or used in special situations causes some mistakes and incorrect results. In this paper, we evaluate models accuracy in addition to modeling losses at 20 kw network model and compare it with the evaluation and measurement method.