Mathematical Model for Autonomous Power Supply Systems on Renewable Sources for Remote Power Users

Trends in the development of the electric power industry in the world are associated not only with the increase in the scale of electricity production in traditional large power plants, but also with the increase in the share of distributed generation [1]. Nowadays, autonomous energy systems have found wide application, in which the electric power generated by installations on renewable energy sources (wind, wave, photoelectric plants, etc.) is given directly to the load (the consumer). However, there are problems in ensuring the quality of electricity caused by instability of the energy flow in the source (wind force, perturbation intensity, light energy flow, etc. are changed), because the distinguishing feature of the windmill electric generating unit is the instability of the output power associated with the variability of the characteristics of the wind as an energy carrier. In these conditions, for reliable power supply of consumers, it is necessary to provide operational control of the operation modes of APS by means of flexible redistribution of active and reactive power, depending on the specific emerging situation associated with changing the load or changing the wind parameters and the corresponding change in the output power of the windmill electric generating unit. The purpose of this paper was to study the issue of increasing the quality of energy of autonomous power supply systems for remote consumers of small and medium power.