Power quality monitoring and sample size analysis beyond EN 50160 and IEC 61000-4-30

Possibility for storing electrical energy in any significant quantity is very limited. Measurement and evaluation of the quality of the supplied Voltage (power) has to be made at the instant of its consumption. Power Quality analysis, monitoring and assessment is a very complex task, since the supplier and user, whose sensitive electrical equipment is also a source of disturbances, have different perspectives.