There are many topics. The hot ones are renewable energy, microgrid, distributed generation, and any other aspect of these topics. You can do some literature search and will see which topics that researchers are working on. The dynamics can change dramatically in a relatively quick fashion too. If you need help with doing research, please write to me: [email protected]. Thanks.

Thanks for your answer, Is there any scope for doing research in FACTS devices?

There is some. FACTS were hot once, but not really now. There is a technology, but the costs are still high. There are some areas of research for FACTS if you have interest.