Node voltage estimation in distribution networks by simple ANN

The procedure for estimation of steady-state node voltage magnitudes in distribution network has been presented. The estimation method is based on the simple Artificial Neural Network (ANN) using voltage measurements in a few network nodes. The nodes used for voltage measurements are determined based on the proposed node index. The ANN is employed to estimate the voltages in the rest of network nodes. The ANN training data are generated by power flow calculations performed in the simulation tool. After ANN was trained the new data set has been used for testing the ANN. The performances of the proposed method are tested on standard distribution test network IEEE 13 node system. The highest estimation error for tested data is about 0.025 p.u.