Abstract: Experimental results of the load parameter model determination on a substation middle voltage level are shown in this paper. This substation supplies residential load. The obtained parameters are different from literature data, because they depend on many factors such as climatic, economic and social ones. The measurements are performed for different day intervals and week days during winter. It is pointed out that real and reactive power sensitivities on voltage vary with voltage value. Mean polynomial static characteristics are presented, too. The obtained static characteristics are approximated by an exponential model with constant coefficients in the examined voltage range.
Keywords: Load modeling, static characteristics, distribution networks.