Substantion of the parameters of filter-device for section dairy farm

The influence of harmonics on power quality are considered in the article. The problems of resonance using compensating gadgets on different frequencies are discussed. It is shown that the amplitude-frequency characteristic (AFC) of an external inductive reactance Xex at low frequencies, including a basic one, up to 250 Hz (ν = 5) has inductive character, and while increasing frequency it becomes the maximum at resonance frequency far, which exchanges its character a lot into the capacitive and decreases with further increase of frequency. Calculation of filter-selection device for a typical agricultural enterprise is shown there.