Twelve flickermeters comparison test

The paper describes the test of flicker evaluation made by eleven different types of power quality analyzers. The standard IEC 61000-4-15Ed.2 (Functional and design specification of flickermeter) issued on August 2010 specifies performance testing. Existing flickermeters from different manufacturers may provide different results when processing non-uniform voltage fluctuations. The flickermeters response to voltage varying signals with envelope shape typical for sawmill, heat pump, granulator was tested. Voltage fluctuation caused by operating of this electrical equipment was measured in the real low voltage distribution network by means of the power quality analyzer Topas 1000. Available to the analysis were one-period records of voltage fluctuation. These were simulated on the programmable power voltage source HP6834B in the university lab. All power quality analyzers were together connected on the output of this voltage generator. Additional were made tests according to the IEC 61000-4-15Ed.2 standard. Short term flicker severity (Pst) was measured and evaluated.