The Cheapest Way to Solve the Flicker Problem

Abstract

Measurements during the last eight years show an increasing level of PIt, an indicator used for the flicker level. Furthermore, almost 50% of all technical customer complaints are flicker problems. The short-circuit power on the connection point is a very important parameter for controlling the fast voltage variations that lead to flicker. However, a high short circuit level can not be established unless investments in the low voltage grid are made. Analyzing the database of customers complaints shows that in only 25% of all cases the short-circuit power is less than the minimum value given in the national grid code, as indication. So other solutions, without investment in the network, are needed