Control of Modes of Power Supply and Lighting Systems of Cities Based on the Concept of Smart-Grid

Abstract

The work is devoted to increasing the efficiency of power supply and lighting systems of cities as a complex biotechnical system. The high level of technical complexity of networks, strong branching, combined with a large number of elements operating in a little predictable mode, make the management of the modes of such networks a rather difficult task, which requires a large amount of information regarding the parameters and modes of electrical networks and their elements, as well as the use of a large number of corrective elements. However, the lack of scientific foundations and automated control of the modes of urban electrical networks as a whole significantly complicates the solution of this problem, and taking into account the characteristics of urban electrical networks, the distribution of parameters in space, and processes in time and the influence of network regimes on the socio-economic conditions of residents, under these conditions, make it almost unsolvable. Considering the above, the authors have developed the scientific foundations for the automated control of modes of urban electrical networks, based on the use of distributed multi-level control systems built according to a hierarchical principle, in combination with the use of corrective multifunctional devices in load nodes, built on the basis of phase-switching systems. Their use in combination with the use of the Smart-Grid concept opens up the possibility of automatically changing the module, phase shift and harmonic composition of voltages and currents in load nodes, ensuring the optimal functioning of urban electrical networks as a whole, by reducing voltage and power losses in networks.