Development of battery technology for backup power in NPPs
There is a strong progress in the development of battery technology, driven by for example electrical vehicles, smart phones etc. We invited battery analyst Helena Berg at Libergreen to present the latest trends within research and development for stationary large-scale battery applications in relation to nuclear power plant needs in terms of power and energy supply.
Download the presentation here.
Power system inertia inertia
In a few years four Swedish nuclear power plants will be closed, thereby increasing the share of intermittent electricity production that does not provide system services like inertia to the grid. Different ways of increasing the inertia is discussed, and synthetic inertia is one option. We invited Mattias Persson, with a PhD in frequency control of wind power plants in weak grids, at Chalmers. He explained what synthetic inertia is and how it will affect the grid and thereby nuclear power plants.
Download the presentation here.
How will new electrical components interact with the current system at the NPP?
A nuclear power plant has numerous electrical devices in different systems. Due to a long-term operation expectancy of a nuclear power plant, many devices need to be replaced one or several times during the life time of the plant. As a natural progress, development of electrical devices is constantly ongoing on the market. This implies that the new devices that will be installed in the NPPs not only may have a different design, but also a different technology and thus different electrical behavior. The GINO program initiated a study to map how the properties of new devices interact with the existing electrical power system and of the alternatives available on the market. Three important device types - relay protections, surge arresters and circuit breakers – have been studied. Henrik Hemark, senior consultant at DNV GL and project leader of the study, presented preliminary results.