OPERATION OF A POWER UNIT AS A PEAK UNIT AND ITS IMPACT ON THE ECONOMY AND RELIABILITY OF THE POWER SYSTEM
Journal Title: Prace Instytutu Metalurgii Żelaza - Year 2018, Vol 70, Issue 3
Abstract
Wind power plants are at the forefront of the development of renewable energy sources (RES) but their operation depends on changing weather conditions. Favouring energy obtained from renewable sources forces the operation of conventional energy as a regulator balancing the system’s demand. Coal-fired power units were designed for continuous operation and their efficiency decreases if they are used as peak units. The increased number of start-ups and frequent fluctuations in the generated power lead in the long run to the accumulation of consumption processes such as thermal fatigue and cracking. Another noticeable effect is also the decrease in reliability indicators and increased operating costs associated with expensive start-ups. The paper presents an estimation of operating costs related to more frequent start-ups of a power unit. The impact of the deterioration of reliability indicators on the production capacity of a single power plant as well as the reliability of the entire system was also analysed.
Authors and Affiliations
Andrzej Rusin, Adam Wojaczek
Keywords
Related Articles
- EP ID EP432177
- DOI 10.32730/imz.0137-9941.18.3.06
- Views 75
- Downloads 0
INFLUENCE OF HAFNIUM ON HIGH TEMPERATURE OXIDATION OF NiAl AND Ni3Al ALLOYS
The results presented in this paper concern the modification of NiAl and Ni3Al alloys with reactive elements that in-crease their high temperature oxidation resistance. Literature data indicate that even trace additions...
RESIDUAL LIFE OF REPAIR WELDED JOINTS IN PIPELINES MADE OF 13HMF AFTER USE FOR THE DESIGN OPERATING TIME
This paper presents the results of material tests of repair welded joints carried out for samples of materials taken from high pressure steam pipelines after over 200,000 operating hours in creep conditions, made of the...
IDENTIFICATION OF PHASE TRANSFORMATION MODEL FOR THE SIMULATION OF CONTROLLED COOLING OF BAINITIC STEEL TUBES
JMAK (Johnson-Mehl-Avrami-Kolmogorov) equation was adapted to simulation of phase transformations during cooling of bainitic steel tubes. The model was identified on the basis of the results obtained from the JMatPro sof...
EKSPLOATACJA RUROCIĄGÓW PARY – DIAGNOSTYKA I WNIOSKI EKSPLOATACYJNE
Materiały konstrukcyjne bloków energetycznych są eksploatowane w warunkach długotrwałego oddziaływania zmiennych pól naprężeń i temperatur oraz są narażone na oddziaływanie środowiska gazów i cieczy. Czynniki te powodują...
OPRACOWANIE MODELI KRAJOWEGO ZUŻYCIA PRĘTÓW ŻEBROWANYCH W LATACH 2004–2017 Z UWZGLĘDNIENIEM RYNKU CEMENTU I KATEGORII OBIEKTÓW BUDOWLANYCH
Celem niniejszej publikacji jest opracowanie modeli ekonometrycznych określających zależności między zużyciem prętów żebrowanych (zmienna objaśniana) w krajowym budownictwie w latach 2004–2017 i materiałami substytucyjny...