Fault Ride Through Evaluation of a 1000MW Nuclear Power Plant

Modern grid codes attempt to unify the existing standards developed by various national and international organizations, implemented from different utilities and generator manufacturers. This evolution of new grid code practices is associated with increasing interoperability of different power systems across borders. This paper compares existing regional network codes for requirements for grid connection applicable to all generators regarding their compliance with the newly formulated code by the European network of transmission system operators for electricity (ENTSO-E). Furthermore, it studies the impact of the unified ENSTO-E codes on the fault-ride-through capability of nuclear power plants (NPP) under extended operating voltage and frequency ranges. The analysis is performed on the typical 1000MW NPP under different voltage and frequency critical ranges and shows that extending the voltage fluctuation below 0.9 pu could affect NPP reliability.