Coordinated BES and UPFC control strategy for the frequency control of renewable integrated multi area power systemCh. Naga Sai Kalyan, K.S.L. Lavanya, Paritosh Mishra and Mohit BajajE3S Web Conf., 591 (2024) 05010DOI: https://doi.org/10.1051/e3sconf/202459105010