Some considerations regarding different earthing electrodes types and arrangements are discussed. The computation of the earthing resistance and voltage distribution, the designing, installation and testing procedures are evaluated and compared. Typical mistakes, inadvertences, wrong or incomplete procedures are outlined, e.g. the soil resistivity ...

By Liviu Neamt, Horia Balan, Olivian Chiver, Alexandru Hotea

The paper achieves a study on the reactive power consumption in case of a medium sized factory. The factories as others industrial consumers usually have the power factor lower than the neutral one, which in Romania is 0.92; that is why these types of consumers have to pay for reactive power. The reason for the power factor is small (sometimes much...

By Olivian Chiver, Liviu Neamt, Cristian Barz, Eleonora Pop, Zoltan Erdei

Photovoltaic (PV) power generation is not only clean green energy but is also especially appropriate for smart grids with distributed power generation. For a good exploitation of a PV system there are some regulations to be respected in accordance with local normative. Voltage and reactive power are two very stringent variables to be monitored. Dur...

By Liviu Neamt, Liviu Petrean, Olivian Chiver, Mircea Horgos, Sorin Sava, Alexandru Hotea