Errors for calculus of the energy losses using statistical characteristics of the loads in the busses

This paper shows the possibilities for estimating the energy losses in the network using statistical characteristics - covariance of the loads and of the balancing bus voltage - calculated for the reference regime of the network. Input data for the network can be estimated energies in the busses for the respective period or a values interval where the loads in the busses will be randomly generated. The generation takes place in every time period related to the reference regime. Finally, we present the results obtained for two test networks.