The paper addresses the unit commitment problem in power plant operation planning. For a real power system comprising coal and gas red thermal as well as 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.

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 presents the idea and mathematical model of a pumped storage power plant. PSPS Porąbka Żar was selected as real object for modelling. Due to specificity operation an intervention-regulatory scheduled nature related coverage demand in system, possibility different modes taken into account model. Porąbka-Żar plant is pearl hydro-engineering on global stage. It first underground secon...

Pumped storage power plants are key components to stabilize electric distribution networks with high amount of intermittent power sources as, e.g., solar and wind power plants. Tailored mathematical models are important for the transient and the stationary analysis of such plants. A comprehensive mathematical model of a variable speed operated pumped storage power plant, which incorporates reve...

Taiwan’s power system is isolated and not supported by other interconnected systems. Consequently, the system frequency immediately reflects changes in the system loads. Pumped storage units are crucial for controlling power frequency. These units provide main or auxiliary capacities, reducing the allocation of frequency-regulating reserve (FRR) and further reducing generation costs in system o...

This paper includes modeling and simulation of 180 MW units of pumped storage power plant with Variable speed machines. In this method, voltage source inverters are used instead of traditional cyclo-converters. This paper aims to control the voltage source inverters and maintain DC voltage at a constant value. AC/ DC/ AC converter is used in system configuration structure in order to control an...

Egypt's national development plan aims at diversifying energy resources and expanding on renewable generation technologies. However, the Egyptian grid needs energy-storage components to stabilize its power supply when coupled with due intermittent random nature of them. The optimal expansion has been reached using a production costing software package electric analysis system (EGEAS). Although ...