Quality of supply regulation in Norway going beyond EN 50160

Regulation of quality of supply in its present form in Norway, has been introduced through a step-wise evolution. The most recent step is the introduction of a new set of regulations relating to the quality of supply in the Norwegian power system. The new Power Quality Directive (PQD) was put into force January 1^st 2005. The paper gives an overview of the new directive, its intentions and its content. The PQD includes new requirements for Power Quality (PQ) documentation, PQ information and PQ service as well as limits for certain voltage quality phenomena. The phenomena dealt with are mainly the same as defined in EN 50160. In the paper a comparison with EN 50160 is given, as the PQD goes further than the EN 50160 on some phenomena.