@article{GeimerSauerbornHoffschmidtetal.2010,
  author    = {Geimer, Konstantin and Sauerborn, Markus and Hoffschmidt, Bernhard and Schmitz, Mark and G{\"o}ttsche, Joachim},
  title     = {Test facility for absorber specimens of solar tower power plants},
  series = {Advances in Science and Technology},
  volume    = {74},
  journal   = {Advances in Science and Technology},
  publisher = {Trans Tech Publications},
  address   = {Baech},
  doi       = {10.4028/www.scientific.net/AST.74.266},
  pages     = {266 -- 271},
  year      = {2010},
  abstract  = {The Solar-Institute J{\"u}lich (SIJ) has initiated the construction of the first and only German solar tower power plant and is now involved in the accompanying research. The power plant for experimental and demonstration purposes in the town of J{\"u}lich started supplying electric energy in the beginning of 2008. The central receiver plant features as central innovation an open volumetric receiver, consisting of porous ceramic elements that simultaneously absorb the concentrated sunlight and transfer the heat to ambient air passing through the pores so that an average temperature of 680°C is reached. The subsequent steam cycle generates up to 1.5 MWe. A main field of research at the SIJ is the optimization of the absorber structures. To analyze the capability of new absorber specimens a special test facility was developed and set up in the laboratory. A high-performance near-infrared radiator offers for single test samples a variable and repeatable beam with a power of up to 320 kW/m² peak. The temperatures achieved on the absorber surface can reach more than 1000°C. To suck ambient air through the open absorber - like on the tower - it is mounted on a special blower system. An overview about the test facility and some recent results will be presented.},
  language  = {en}
}
@article{KernFrentzelBehrens2010,
  author    = {Kern, Alexander and Frentzel, Ralf and Behrens, J{\"o}rg},
  title     = {Simulation of the transient voltages in the auxiliary power network of a large power plant in case of a direct lightning strike to the high-voltage overhead transmission line},
  publisher = {IEEE},
  address   = {New York},
  isbn      = {978-88-905519-0-1},
  doi       = {10.1109/ICLP.2010.7845756},
  pages     = {749-1 -- 749-7},
  year      = {2010},
  abstract  = {Large power plants can be endangered by lightning strikes with possible consequences regarding their safety and availability. A special scenario is a lightning strike to the HV overhead transmission line close to the power plant's connection to the power grid. If then additionally a so-called shielding failure of the overhead ground wire on top of the overhead transmission line is assumed, i.e. the lightning strikes directly into a phase conductor, this is an extreme electromagnetic disturbance. The paper deals with the numerical simulation of such a lightning strike and the consequences on the components of the power plant's auxiliary power network connected to different voltage levels.},
  language  = {en}
}
@article{BouquegneauKernRousseau2010,
  author    = {Bouquegneau, Christian and Kern, Alexander and Rousseau, Alain},
  title     = {Lightning safety guidelines},
  pages     = {6 Seiten},
  year      = {2010},
  abstract  = {This paper introduces lightning to the layman, noting the right behaviour in front of thunderstorms as well as protective measures against lightning. It also contributes to the prevention of lightning injuries and damages. This report was prepared by the authors inside the AHG1 Group for IEC TC81 (Lightning Protection).},
  language  = {en}
}
@article{KernKloetersPferdemenges2010,
  author    = {Kern, Alexander and Kl{\"o}ters, Georg and Pferdemenges, J{\"o}rg},
  title     = {Optimised protection against lightning for the signalling and safety systems of level crossings on non-electrified railway lines},
  series = {RTR : European Rail Technology Review},
  volume    = {50},
  journal   = {RTR : European Rail Technology Review},
  number    = {2},
  publisher = {DVV Media Group},
  address   = {Hamburg},
  issn      = {0079-9548},
  year      = {2010},
  language  = {en}
}
@article{KernSchelthoffMathieu2010,
  author    = {Kern, Alexander and Schelthoff, Christof and Mathieu, Moritz},
  title     = {Probability of lightning strikes to air-terminations of structures using the electro-geometrical model theory and the statistics of lightning current parameters},
  publisher = {IEEE},
  address   = {New York},
  isbn      = {978-88-905519-0-1},
  doi       = {10.1109/ICLP.2010.7845757},
  pages     = {750-1 -- 750-8},
  year      = {2010},
  abstract  = {Planning the air-terminations for a structure to be protected the use of the rolling-sphere method (electro-geometrical model) is the best way from the physics of lightning point-of-view. Therefore, international standards prefer this method. However, using the rolling-sphere method only results in possible point-of-strikes on a structure without giving information about the probability of strikes at the individual points compared to others.},
  language  = {en}
}
@article{AlexopoulosHoffschmidt2010,
  author    = {Alexopoulos, Spiros and Hoffschmidt, Bernhard},
  title     = {Solar tower power plant in Germany and future perspectives of the development of the technology in Greece and Cyprus},
  series = {Renewable Energy},
  volume    = {35},
  journal   = {Renewable Energy},
  number    = {7},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0960-1481},
  doi       = {10.1016/j.renene.2009.11.003},
  pages     = {1352 -- 1356},
  year      = {2010},
  abstract  = {Since the 80s power production with solar thermal power plants has been a way to substitute fossil fuels. By concentrating direct solar radiation from heliostats very high temperatures of a thermal fluid can be reached. The resulting heat is converted to mechanical energy in a steam cycle which generates electricity. High efficiencies and fast start-up are reached by using air as a heat medium, as well as using porous ceramic materials as solar receiver of the concentrated sunlight. In Germany the construction of a 1.5 MWe solar tower power plant began in 2008. It is operational since December 2008 and started production of electricity in the spring of 2009. In Greece and Cyprus, countries with high solar potential, the development of this competitive solar thermal technology is imperative, since it has already been implemented in other Mediterranean countries.},
  language  = {en}
}
@article{HoffschmidtBeckerFend2006,
  author    = {Hoffschmidt, Bernhard and Becker, Manfred and Fend, Thomas},
  title     = {Theoretical and numerical investigation of flow stability in porous materials applied as volumetric solar receivers / M. Becker ; T. Fend ; B. Hoffschmidt ...},
  series = {Solar energy. 80 (2006), H. 10},
  journal   = {Solar energy. 80 (2006), H. 10},
  isbn      = {0038-092X},
  pages     = {1241 -- 1248},
  year      = {2006},
  language  = {en}
}