Chervinska T. Optimal reactive load control in voltage unbalance conditions of electric grid

The object of study - reactive load control by static condensers battery in power supply systems. The aim is increase the efficiency of reactive load control by static condensers battery in unbalance mode which allow to reduce watt loss in electric grids without changing the state of such power quality parameters as voltage unbalance and voltage fluctuation by realization developed mathematical models in control systems. The method of symmetrical components, methods of mathematical programming, statistical methods are used. Theoretical results - the necessity to take into account voltage unbalance in the node where battery of static condensers were turned on for reactive load control is proven and the conditions when this factor must be taken into account are determined. The method of optimal reactive load control in unbalance mode, which lie in solving of sequence of mathematical programming problems with an opportunity to use control models depending on the power supply system is developed. In contrast to the existing the mathematical models for reactive load control provide optimum control taking into account influence of static condensers battery which are used in unbalance mode are improved. The practical results - FACTs computation control system for reduce watt loss in electric grids, fulfillment of the requirements of reactive load compensation and provision of the state of such power quality parameters as voltage unbalance and voltage fluctuation. The degree of implementation - the results have been implemented in JSC "Vinnytsiaoblenergo" and in the scientific process of Vinnitsa National Technical University. Scope (area) of - power engineering.