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Auflistung nach Autor:in "Heinemann, Detlev"

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  • Konferenzbeitrag
    Flickering Events in Wind and Solar Power
    (Proceedings of the 28th Conference on Environmental Informatics - Informatics for Environmental Protection, Sustainable Development and Risk Management, 2014) Lohmann, Gerald; Tabar, M. Reza Rahimi; Milan, Patrick; Anvari, Mehrnaz; Wächter, Matthias; Lorenz, Elke; Heinemann, Detlev; Peinke, Joachim
    This paper reports stochastic properties of renewable wind and solar energy resources by studying their conditional probability distribution functions (cpdf) in different time lags. The empirical results are obtained for data of global horizontal irradiance measured by a single sensor and the power output of a single wind turbine, as well as for an averaged solar sensor field and an aggregated wind farm. Moreover, the dependency of the time series' spread on the solar elevation angle, and the wind speed, respectively, is investigated in order to assess the risk of flickering in relation to these variables. The results show that the conditional distribution functions deviate strongly from Gaussian statistics and possess positive skewness, while the risk of flickering events in wind power and solar irradiance generally increases with wind speed and solar elevation, respectively, for single point measurements. Spatial averaging leads to flickering risk reduction.
  • Konferenzbeitrag
    SoDa: A Project for the Integration and Exploitation of Networked Solar Radiation Databases
    (Environmental Communication in the Information Society - Proceedings of the 16th Conference, 2002) Wald, Lucien; Albuisson, Michel; Best, Clive; Delamare, Catherine; Dumortier, Dominique; Gaboardi, Elena; Hammer, Annette; Heinemann, Detlev; Kift, Richard; Kunz, Stefan; Lefevre, Mireille; Leroy, Sebastien; Martionli, Mario; Menard, Lionel; Page, John; Prager, Tamas; Ratto, Corrado; Reise, Christian; Remund, Jan; Rimoczi-Paal, Aniko; Van der Goot, Erik
    The project SoDa (solar data) answers the needs of industry and research for information on solar radiation parameters with a satisfactory quality. The methodology is user-driven with a large involvement of users in the project, who gauge the progresses and achievements. A prototype service has been developed, using Internet technology, that integrates and efficiently exploits diverse networked information sources to supply value-added information. Access to data and applications has been greatly improved; efforts were made on interpolation methods and satellite data processing to achieve better quality and increase time and space coverage of the information. Applications were developed or networked to supply information actually needed by customers, and not only raw data.