Development of a simulation model of HPPs chain operation Alexandra Khalyasmaa, Stanislav Eroshenko, Sergey Mitrofanov, Anastasia Rusina, Anna Arestova and Alena Sidorova E3S Web Conf., 191 (2020) 02004 Published online: 24 September 2020 DOI: 10.1051/e3sconf/202019102004