About the concept of system modeling of electric energy quality

Summary form only given. The problem of electric energy quality, despite of its long-term history, continues to be of current importance. On the basis of many years´ studies it is possible to establish that the facts of deterioration of electric energy quality take place in network systems of practically all purposes and kinds of voltage. The reason of proceeding deterioration of electric energy quality is the further increase in capacity of loads, which can be nonlinear, asymmetrical electroreceivers, as well as electroreceivers with a sharply alternating operating mode. The study of questions of maintenance of electric energy quality and decrease in negative influence of separate electroreceivers and load centers as a whole on its parameters should be based on careful studying of electric modes by measurements, on-site tests and mathematical modeling.