Characteristics of the flicker in chosen industrial plants

Peculiarities of different kinds of industrial loads in relation to produced flicker effects have been presented in this paper. The analysis bases on measurements performed in different industrial plants using conventional power quality instruments. Various types of industrial plants will be chosen from the group of largest power consumers in Poland in order to observe specific properties of the flicker. Some changes of the short term parameter of the flicker in relation to load type in those objects will be exposed and discussed. The two main purposes of the performed analysis are, description of observed specific features of flickers registered using instruments and calculation methods based on the standard EN-61000–4–15 and evaluation basing on the standard EN 50160, and, critical evaluation of obtained measuring results in relation to the physical sense of flicker effects. The problem of calculation procedure of the flicker, first of all its short term parameter, for chosen kinds of industrial plants will be discussed based on the performed analysis.