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In electrical networks, the presence of non-symmetrical situation determines several effects. A consequence of non-symmetrical situations is the significant value of non-symmetry power. The computation of non-symmetry factor is a method for estimate the influence of non-symmetry power, in three-phase systems, (similar with estimation of reactive power influence by power factor value). The paper describes...
Loss of excitation (LOE) is a common fault found in the generators. The most widely applied method for detecting a generator loss of excitation is the use of impedance relays to sense the variation of impedance as viewed from the generator terminals. However, compared with China's approachs, in the setting of impedance circle, the IEEE's allow the circle to extend along the negative X axis, meanwhile,...
The deficiencies of existing load models and their implementations in power system simulation programs are addressed in this paper. To improve the load model for power system simulation, a Synthesis Load Model (SLM) with distribution network, which is consistent with the structure of power loads and distribution networks, is presented. The SLM is reasonable in structure and convenient to use. The...
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