A Comprehensive and Critical Review on Integrated Electric Power and Gas Networks

Renewable energy is widely used to reduce environmental pollution in the face of the energy crisis and climate change. Uncertainty in power generation by the major renewable energy sources such as wind and solar PV has posed significant challenges to the operation of the distribution networks. Thus, more accommodation of renewable energy with the power system is hindered. As a potential solution to the globally recognized imperatives of reducing CO2 emissions and utilizing more renewable energy, the concept of integrated electric power and gas (IEPG) systems has been evolved. Several models, optimal dispatch, and optimization techniques are presented in the literature with power-to-gas (P2G), carbon capture system (CCS), gas turbine, combined heat and power (CHP), and micro-gas turbine modules. Also, for secure, stable, and reliable operation of IEPG systems, storage devices are sufficiently integrated in both power and gas networks. This article provides a comprehensive review on IEPG systems considering several issues such as uncertainties, optimizations, environmental impacts, policy and regulation, planning, and modeling. The challenges and opportunities for IEPG networks are discussed broadly. The benefits and drawbacks of various topologies for IEGS systems are thoroughly documented, making this a great resource for industry professionals and academics alike. Key research gaps are identified, which could be filled by cutting-edge technologies. Readers will benefit from this review by learning about the current state of IEPG systems and the need for further research in this area.