Monitoring the power quality
RCM, as well as the requirements of Bitkom and the association of insurers, were dealt with in the first two parts.
The final point of 3-in-1 monitoring is the power quality. The reliable operation of modern plants and systems always demands a high degree of supply reliability and good power quality.
However, in modern energy supply a wide range of single and three-phase, non-linear loads are used in industrial networks right through to office blocks.
These include lighting equipment such as lighting controls for headlamps or low energy bulbs, numerous frequency converters for heating, air-conditioning and ventilation systems, frequency converters for automation technology or lifts, as well as the entire IT infrastructure with the typically used regulated switched mode power supplies.
Today, one also commonly finds inverters for photovoltaic systems (PV) and uninterruptible power supplies (UPS). All of these non-linear electrical loads cause grid feedback effects to a greater or lesser extent with a distortion of the original „clean“ sinusoidal form. This results in the current or voltage waveform being distorted in the same way.