1. Renewables 2014 global status report;Zervos,2014
2. Maintaining power grid reliability through individual unit stability;Kroner,2008
3. Power blackout risks risk management options;Bruch,2011
4. Effect of transients on Francis turbine runner life: a review;Trivedi;J Hydraul Res,2013
5. Guide for commissioning, operation and maintenance of storage pumps and of pump-turbines operating as pumps;IEC-60805,1985