| Autor: |
Gierow, Conrad, Hübel, Moritz, Nocke, Jürgen, Hassel, Egon |
| Předmět: |
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| Zdroj: |
International Workshop on Large-Scale Integration of Wind Power into Power Systems as well as on Transmission Networks for Offshore Wind Plants; 2016, p164-168, 5p |
| Abstrakt: |
In consequence of the increasing integration of renewable energy sources like wind and solar energy in the existing power grid especially conventional power plants have to set their focus more on flexibility and grid stabilization than supplying the base load. Since the changes in the energy market have not been foreseeable when designing the currently existing power plants, they will have to suffer completely different load scenarios than expected. As it is written in [1] the number of starts of an representative hard coal-fired power plant is expected to increase significantly from 14 in the year 2011 up to 66 in 2023. A promising way to study the power plant operation of various possible future scenarios is the dynamic modelling of complete steam cycles. Using this technique different studies have been made in the past. In [2] and especially [3] the influence of offering larger amounts of grid services on the lifetime consumption of critical parts has been discussed. In addition to that [1] gives an comprehensive overview on the future situation at the energy market and the resulting changes in the overall operating scheme of conventional power plants like increasing load gradients and optimized startup procedures. Regarding the durability according to [4] not only lifetime consumption but also crack growth has to be considered for successfully integrating renewable energies into the market. This study investigates the criticality of the temperature and pressure transients during the shutdown process using a hard coal-fired 550 MW power plant as a reference plant. The importance of these processes in terms of damage especially at thick-walled components is also presented in [4]. The focus of the current study is set on the thermodynamic process requirements for ensuring stability and sustainability of conventional plants in this new market environment with an increasing integration of fluctuating energy from wind and solar power sources. An outline of critical components is given and concluded with improvement concepts. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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