Transmission and distribution of AC voltages of 1 kV or more or DC voltages (DC) exceeding 1.5 kV are crucial in ensuring a reliable supply of electric power. Together with other equipment required e.g. for generating, transforming, storing or consuming electrical energy, these are referred to as power installations. Standards are being developed for the design, construction and earthing of power installations in AC and DC networks. The aim of the standardization is to ensure reliable and proper functioning during normal operation.
This includes, for example, switching and substation facilities for public supply networks, including the supply of electricity to railway systems. The scope also includes electrical networks of industrial plants and electrical equipment on offshore platforms for wind farms.
The main standards have now become internationally agreed documents as a result of European harmonization efforts and subsequent consolidation at IEC level. The general requirements for power installations have been revised and, with the exception of a few national differences, the normative provisions now apply uniformly and without exception throughout Europe.
The latest guidelines for users of the standard can be found in the recently published new edition of Volume 11 of the VDE series entitled "Power installations with nominal voltages above 1 kV".
This is principally of relevance for high voltage DC systems and systems for offshore platforms. Supplementary requirements are being drawn up at the international level for high-voltage DC systems, whereas the subject of earthing - including on offshore platforms - is a European standardization issue.
DKE committee experts are represented in all these areas, thus ensuring that the experience of German professionals is reflected in the eventual documents.