КОМПЛЕКСНОЕ МОДЕЛИРОВАНИЕ ЭЛЕКТРИЧЕСКИХ РЕЖИМОВ В СЕТЯХ ВНЕШНЕГО И ВНУТРЕННЕГО ЭЛЕКТРОСНАБЖЕНИЯ ПРЕДПРИЯТИЙ С СОБСТВЕННОЙ ГЕНЕРАЦИЕЙ

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When integrating own generation including emergency power supply sources it is necessary to perform an atypical at the present time complex of calculations of electrical regimes in internal power supply schemes of enterprises including the calculations of steady and optimized regimes, electromechanical transients and power quality indicators. The PURPOSE of the study is to identify the potential risks of accidents resulting in the interruption of power supply of particularly responsible electric receivers when connecting to internal power supply systems of own generation facilities including emergency power supply sources both in parallel and stand-alone operation mode with the power system. The METHODS used include conducting specialized studies of the parameters of electrical modes and a complex of calculations of steady and optimized modes, electromechanical transients and power quality indicators in the DIgSILENT PowerFactory software package. RESULTS. The articles presents the problematic aspects revealed in the specialized researches and integrated modeling of electrical modes in the networks of external and internal power supply of enterprises with own generation and emergency power sources, as well as the measures recommended in order to improve the reliability of consumer power supply. CONCLUSIONS. It is necessary to raise the requirements for the volume of electric mode modeling in the networks of external and internal power supply of enterprises with own generation facilities and emergency power supply sources both at the design stage and during energy inspections in order to to verify the validity of the adopted design decisions.