Innovative Technologies for Controlling Modes of Power Supply Systems Using Renewable Energy Sources

The chapter provides a description of control technologies for distributed generation installations using renewable energy sources. The control of distributed generation installations, for example, wind turbines (WT), determines the operating mode of the power supply system in which these installations are used. A fuzzy controller for WT is proposed. The results of computer modeling show that controlling the power of the WT makes it possible to maintain the stability of its operation not only with variations in wind speed, but also in the event of changes in consumer load. The proposed methodology for tuning the fuzzy controller of the WT allows us to form a universal base of rules for the effective operation of the WT both in stand-alone mode and as part of network clusters. The issues of modeling and setting up a fuzzy system for controlling the speed of rotation of the WT rotor, operating on the basis of a generator with excitation from permanent magnets, are also considered. The following are the results of a study of emergency modes in the power supply system with distributed generation installations. Based on the modeling results, it can be noted that the use of distributed generation installations increases short-circuit currents, and the use of a rectifier-inverter group is an effective measure to limit them. The work also examines an isolated power supply system for an industrial enterprise, in which the following installations were used: a turbogenerator unit (TGU) with a self-adjusting predictive speed controller, a wind generator unit with a fuzzy regulator of the angle of rotation of the wind wheel blades, and a storage device, the energy intensity and power of which is sufficient to cover the entire load. enterprises. Modeling of normal and emergency operating modes has shown that the combined use of an electrical energy storage device and a self-adjusting predictive speed controller of the TGU generator rotor makes it possible to ensure the stability and survivability of an isolated power supply system when operating modes change. The use of a fuzzy system for controlling the angle of rotation of the WT blades with a battery and a DC insert ensures stable operation of the WT in the normal and emergency modes under study.