Rapid voltage changes - definition and minimum requirements

Rapid voltage change (RVC) is one of the voltage disturbances classified under the term voltage quality and is included in several standards internationally but without a fully unique definition. This paper describes the Norwegian regulator´s motive for introducing requirements for RVCs in the public electricity quality of supply regulation. Furthermore, a research project is described with focus on which rapid voltage changes that are visible in lighting. This project gave a sound basis for providing a unique definition on RVCs, and the definition is also presented. Finally, the paper describes the regulator minimum requirements for RVCs.