1. Senior Research Scientist, SINTEF Energy Research, Sem Sælands vei 11, 7465 Trondheim, Norway (corresponding author). ORCID: .
2. Chief Scientist, SINTEF Energy Research, Sem Sælands vei 11, 7465 Trondheim, Norway.
3. Research Scientist, SINTEF Energy Research, Sem Sælands vei 11, 7465 Trondheim, Norway.
4. Ph.D. student, Dept. of Electric Power Engineering, Norwegian Univ. of Science and Technology, 7491 Trondheim, Norway.