An innovative method for minimizing voltage fluctuations in distributed power supply systems

lternating voltage Harmonics Power supply system Voltage regulatorIn distributed sources of power supply there are constantly conditions in which the voltage can change at a high speed.For example: gusty wind in the area where a wind power plant is installed, small clouds moving over a solar power plant.In the electricity standard, such changes in voltage are introduced as "fluctuations" voltage.The effect of low-quality voltage are electromagnetic and technical losses.That is results in increasing expenses on power and energy, reduction of the equipment operating cycle, process losses, which include reducing production, decreasing product quality and production of low-quality products Thus, the voltage deviation is one of the major problems in power supply systems of industrial enterprises.Its solution is a priority task in the design of power supply systems.The ways of improving the efficiency of food production by reducing process losses caused by defective voltage were studied.The way to improve voltage quality was suggested.The systematic approach to voltage regulation that allows increasing economic performance of energy sources was introduced.The most promising is the regulation method acting on voltage and reactive power.Deviation of current waveform and sinusoid voltage was studied by using harmonic components (harmonics) according to the mathematical theory established by Fourier (1768Fourier ( -1830)).The term "harmonic" is used in acoustics to refer to string vibrations with a frequency multiplied to the fundamental frequency of vibrations.Higher harmonics have negative effect on all types of electrical equipment, even at a considerable distance from the harmonic generation.They create additional noise in telecommunication, leading to false replies of responsive equipment.The problem of higher harmonics is the main problem of electromagnetic compatibility of electrical equipment due to the increased power of thyristor converters and the widespread use of electronic automatic control systems that are sensitive to the shape of the sine wave voltage.If power network voltage, where the installation of a switching regulator is planned, is non-sinusoidal, there is a real opportunity to use a voltage regulator to minimize higher harmonics.