Metal spinning as a kind of manufacturing process has capability to shape hollow components. In present work shear spinning process is used to formplates into conical shapes. Moreover, the aim of this research is to demonstrate the impact of the process parameters (i.e. feeding rate and spindle speed) on wall thickness. This approachwas done by experimental and finite elements method. The resul...

The dynamics of power system blackouts and the associated Self-Organized Criticality (SOC) behavior is a subject that receives continuous attention in view of its inherent complexity and relevant consequences. Within this context, the paper focuses on the short-term dynamic and, more specifically, aims at studying the role of the spinning reserve and frequency control on the blackout mechanism....

The Korean government has declared the goal of net-zero-carbon emissions with a focus on renewable energy expansion. However, high proportion baseload generators and an increasing variable (VRE) may cause problems in power system operation owing to low cycling capability variability VRE. To maintain reliability, is planning construct pumped-storage hydropower (PSH) plants, which can provide fle...

In recent years, incremental rate of electrical demands made many challenges for policy makers of power systems. Besides, due to economic crisis and environmental concerns about the air pollution, the new investments in thermal power generation units have experienced a noticeable reduction. For this reason, the power system operators should propose novel approaches to make a balance between inc...

Aiming at the problem that current dynamic economic dispatch (DED) fails to consider response risk of spinning reserve caused by fluctuation and uncertainty wind power, we work out a DED considering time-coupling while stochasticity variability arising from RESs are taken into consideration. The developed framwork unified forced shutdown unit time coupling. expected customer interruption cost (...

In this paper, Object-Oriented Modelling and Simulation (OOMS) is applied to a typical industrial problem, namely Primary Spinning Reserve scheduling in a Combined Cycle Power Plant. This allowed to optimise the control system so as to comply with the Network Code requirements in the presence of dynamic constraints posed by the plant main machineries. A simulation model of the plant was written...

This paper presents a comparison of optimization methods applied to islanded micro-grids including renewable energy sources, diesel generators and battery energy storage systems. In particular, a comparative analysis between an optimization model based on linear programming and a model based on mixed integer programming has been carried out. The general formulation of these models has been pres...

An approach to calculate the wind farm penetration capacity based on chance constrained programming combining with transient check was presented. A novel model for programming penetration of wind farm under indeterminacy operating mode was presented. Constraint condition consisted of conventional generator output limits, system spinning reserve, transmission lines capability, nodal voltage, sys...