Synergistic effect of complementary cleaner energy sources on controllable emission from hybrid power systems in optimal power flow framework

Abstract

The increased penetration of renewable energy resources into the power system may make the system operation extremely vulnerable due to their inherent volatility and variability. Thus, optimum utilization of cleaner power generation into the power system without affecting the operational economy, voltage security and stability becomes a challenging issue. To minimize this adverse impact of intermittent renewable resources, hydro power sources may be considered as an effective option. Inclusion of hydro power may contribute towards optimal utilization of the abundant clean energy and enhance the capability to mitigate the volatile renewable power sources while forming a stable hybrid power system (HPS). In this context, an intelligent generation scheduling (IGS) mechanism is proposed to effectively mitigate these complex challenges. To further analyze these issues, multiple case studies under different operating conditions are carried out to portray the significance of incorporating the complementary behaviour of hydro-solar generation with thermal power generation facilities in environmental optimal power flow (EOPF) framework. Widely accepted IEEE 30 bus benchmark system is considered for the validation of results. Optimal operational paradigm (OOP) for the three different HPS configurations i.e. (1) Solar-Thermal (ST); (2) Hydro-Thermal (HT); and (3) Solar-Hydro-Thermal (SHT) is evaluated using Jaya algorithm (JA) while meeting the real time constraints. With the OOP, a comparative performance evaluation is carried out among different hybrid configurations in fulfilling the multiple objectives. Results show the supremacy of SHT configuration in minimizing the operating cost by 1.324×105 US$/y to 2.445×105 US$/y and emission up to 15.768 Tons/y compared to other configurations.