ANALYSIS AND DATA PROCESSING SYSTEMS

Abstract
Calculations of electric energy losses are needed to estimate a standardized technological loss of power and to reduce power losses of distribution systems. This paper proposes the main propositions of the probability-statistical method based on the probabilistic load flow for calculating the losses of electric energy with regard to the dependence between nodal powers. The paper presents a model of energy consumption, which describes the basic data of the power supply for daily, monthly and yearly intervals. The method can be used for power losses calculations on the high voltage transmission network at voltages above 110 kV, and distribution network with the non-uniform daily load profiles. The probabilistic-statistical method for calculating load losses of electric energy removes the main assumption of the traditional methods, namely, the introduction of the same integrating factor in the loss formula for all elements of the electrical network, and allows taking into account the heterogeneity of nodes in the network load and correlation between nodal powers.

 

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