Increasing flexibility of coal power plant by control system modifications

Marušić, Ante and Lončar, Dražen and Batelić, Jakov and Franković, Valdi (2015) Increasing flexibility of coal power plant by control system modifications. = Increasing flexibility of coal power plant by control system modifications. In: 10th Conference on Sustainable Development of Energy, Water and Environment Systems, 27.9.-2.10.2015., Dubrovnik, Hrvatska.

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Abstract

Expanding implementation of intermittent renewable energy sources has already started to change the role of thermal power plants in energy systems across Europe. Traditionally base load plants are now forced to operate as peaking plants. Familiar transition in upcoming years is expected in Croatia and coal power plant operators are preparing accordingly. To evaluate control system operation and cycling capabilities for flexible operation of selected 210 MW coal plant, series of tests with different load gradients were performed and results were thoroughly analyzed. Several unexpected readings were observed, usually caused by malfunctioning sensors and equipment resulting in unexpected oscillations of superheated steam temperature. To assess optimal steam temperature control parameters, one dimensional simulation of steam superheating was conducted and control system was tuned to satisfy temperature differences based on guidelines for flexible operation. Changes of control system structures and parameters will be recommended in order to improve superheated steam temperature behavior and to assure stable plant operation during load changes.

Item Type:	Conference or Workshop Item (Lecture)
Keywords (Croatian):	Coal Powered Plants, Flexible Generation, Thermal Stress, Simulation
Subjects:	TECHNICAL SCIENCE > Mechanical Engineering
Divisions:	500 Department of Energy, Power Engineering and Environment > 510 Power Engineering and Energy Management Chair
Indexed in Web of Science:	No
Indexed in Current Contents:	No
Date Deposited:	14 Apr 2016 09:48
Last Modified:	16 May 2017 14:51
URI:	http://repozitorij.fsb.hr/id/eprint/5611

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