The unit commitment problem in power plant operation planning is addressed For a real power system comprising coal and gas red thermal and pumped storage hydro plants a large scale mixed integer optimization model for unit commitment is developed Then primal and dual approaches to solving the optimization problem are presented and results of test runs are reported

This article proposes a unified solution to address the energy issues in net-zero building (ZEB), as new contribution earlier studies. The multicarrier system, including hydro-wind-solar-hydrogen-methane-carbon dioxide-thermal energies is integrated and modeled ZEB. electrical sector supplied by hydro-wind-solar, combined heat power (CHP), pumped hydro storage (PHS). thermal CHP, boiler, electr...

Pumped Thermal Energy Storage (PTES) is an increasingly attractive area of research due to its multidimensional advantages over other grid scale electricity storage technologies. This paper built a model and numerically studied the performance Argon based Brayton type PTES system. The was used optimise total work output round-trip efficiency aspect ratio thermal tanks operation packed bed segme...

Pumped thermal energy storage is seen as a possible alternative to pumped-hydro schemes for storing electricity at large scale and facilitating increased integration of renewable sources. This paper presents novel form pumped in which the thermodynamic cycle exploits temperature glide exhibited by zeotropic mixtures. The working fluid blend linear alkanes, optimised so obtain near-constant effe...

Abstract In this paper, we (i) present a methodology for determining the aerodynamic performance of bi-directional turbomachines pumped thermal energy storage, i.e., designed to operate as compressor in one direction, and then turbine opposite (ii) carry out computations such turbomachines, (iii) propose principles conceptual design these devices. Focus is placed on using storage cycle not only...

This paper presents a stochastic mixed-integer linear programming approach for solving the selfscheduling problem of a price-taker thermal and wind power producer taking part in a pool-based electricity market. Uncertainty on electricity price and wind power is considered through a set of scenarios. Thermal units are modelled by variable costs, start-up costs and technical operating constraints...