Techno-environmental assessment of gas-based power plant and renewable unit in the presence of power to gas system and gas storages for emission reduction using information gap decision theory

Abstract

Carbon dioxide is the most common greenhouse gas and a major contributor to global warming. Utilization of power to gas systems (P2G) in conventional power plants to reduce the CO2 emissions is one of the promising approaches. In this paper, a P2G system combined from electrolysis and methanation units is proposed for recycling CO2 emission. This P2G system is considered to operate environmentally and economically integrated with a gas-based power plant (GBPP) and renewable energy resources like wind generation unit. In addition, wind generation uncertainty parameter is modeled through three various strategies as robustness, opportunity, and basic functions by using the information gap decision theory (IGDT) optimization method considering the wind generation uncertainty parameter, which has a major impact on the optimal operation of the proposed GBPP-P2G system. Furthermore, CH4 and CO2 gas storage units are utilized in the P2G system to enhance the reduction of CO2 emission. Results reveal the effectiveness of the proposed GBPP-P2G system in sharply decreasing the CO2 emission and wind curtailment.