Comparison of European Network Codes for AC- and HVDC-connected Renewable Energy Sources
Abstract
Developing an integrated pan-European energy system based on renewable energy sources (RES) has technical and economic benefits. In this way, harmonized rules for grid connection of RES are required at the international level. Wind energy is one of the most promising renewable energy worldwide. The integration of wind energy into the power system is overgrowing through onshore and offshore installations. The European network codes have been drafted and regulated for AC- and HVDC-connected power-generating modules (PGM) in two separate international network codes. This paper presents the main aspects of the regulated European network codes and compares them. Accordingly, it is recommended to define the European network codes based on RES connection type (AC and HVDC) rather than the onshore and offshore categorization. Also, the main requirements for HVDC-connected generations are being regulated all around Europe. Therefore, the integration of RES into European power systems via HVDC transmission would be easier