@incollection{KuechlerHammer, author = {K{\"u}chler, Andreas and Hammer, F.}, title = {Insulating Systems for HVDC Power Apparatus}, series = {3rd Int. Conf. on Properties}, booktitle = {3rd Int. Conf. on Properties}, address = {Graz, {\"O}sterreich}, language = {en} } @incollection{KuechlerHammer, author = {K{\"u}chler, Andreas and Hammer, F.}, title = {Application of Dielectric Materials}, address = {Tokyo}, pages = {965 -- 968}, language = {en} } @article{HartmannTaubertMonteetal., author = {Hartmann, J{\"u}rgen and Taubert, Dieter Richard and Monte, C. and Gutschwager, B. and Baltruschat, C. and Hollandt, J{\"o}rg and Kochems, D. and K{\"u}chel, C.}, title = {The Spectral Photon Flux of the Radiometric Calibration Spectral Source for the NIRSpec Instrument of the James Webb Space Telescope}, series = {Metrologia}, journal = {Metrologia}, number = {46}, pages = {207 -- 212}, language = {en} } @article{HartmannThomasHilletal., author = {Hartmann, J{\"u}rgen and Thomas, R. and Hill, K.D. and Steele, A.G. and Ma, C.K.}, title = {Bilateral comparison of the NRC and PTB local realizations of the ITS-90 between the silver point and 1700 °C using vacuum tungsten strip lamps as transfer standards}, series = {Metrologia}, volume = {43}, journal = {Metrologia}, number = {03003}, language = {en} } @article{HartmannFriedrichTaubertetal., author = {Hartmann, J{\"u}rgen and Friedrich, R. and Taubert, Dieter Richard and Hollandt, J{\"o}rg}, title = {Improved calibration of the spectral responsivity of interference filter radiometers in the visible and near infrared spectral range at PTB}, series = {Metrologia}, journal = {Metrologia}, number = {40}, pages = {35 -- 38}, language = {en} } @article{HartmannAnhaltZelenjuketal., author = {Hartmann, J{\"u}rgen and Anhalt, Klaus and Zelenjuk, A. and Taubert, Dieter Richard}, title = {New PTB Set-up for the absolute calibration of the spectral responsivity of radiation thermometers}, series = {International Journal of Thermophysics}, journal = {International Journal of Thermophysics}, number = {30}, pages = {192 -- 202}, language = {en} } @article{HartmannMaGibson, author = {Hartmann, J{\"u}rgen and Ma, C.K. and Gibson, C.}, title = {Decreasing dependence of the calibration of the tungsten strip lamp on the temperature of the lamp base with increasing filament length}, series = {Metrologia}, journal = {Metrologia}, number = {42}, pages = {383 -- 388}, language = {en} } @article{HartmannAnhaltWangetal., author = {Hartmann, J{\"u}rgen and Anhalt, Klaus and Wang, Y. and Yamada, Y.}, title = {Large and small aperture Fixed-point cells of Cu, Pt-C, and Re-C}, series = {International Journal of Thermophysics}, journal = {International Journal of Thermophysics}, number = {29}, pages = {969 -- 983}, language = {en} } @article{HartmannWerner, author = {Hartmann, J{\"u}rgen and Werner, L.}, title = {Radiation thermometry towards the triple point of water?}, series = {International Journal of Thermophysics}, journal = {International Journal of Thermophysics}, number = {29}, pages = {1052 -- 1065}, language = {en} } @article{Hartmann, author = {Hartmann, J{\"u}rgen}, title = {Correct consideration of the index of refraction using blackbody radiation}, series = {Optics Express}, volume = {14}, journal = {Optics Express}, number = {18}, pages = {8121 -- 8126}, language = {en} } @article{Hartmann, author = {Hartmann, J{\"u}rgen}, title = {Advanced comparator method for measuring ultra small aperture areas}, series = {Meas.Sci.Techn.}, journal = {Meas.Sci.Techn.}, number = {12}, pages = {1678 -- 1682}, language = {en} } @inproceedings{WirthReumannKuechleretal., author = {Wirth, Isabell and Reumann, Andreas and K{\"u}chler, Andreas and Schnitzler, Tim and Langens, Achim and Berger, Frank and Zink, Markus H.}, title = {Steady-state and Transient Electrical Potential Distribution in HVDC Bushings Measured under Different Thermal Conditions}, series = {19th International Symposium on High Voltage Engineering}, booktitle = {19th International Symposium on High Voltage Engineering}, address = {Pilsen, Czech Republic}, language = {en} } @book{Zink, author = {Zink, Markus H.}, title = {Zustandsbewertung betriebsgealterter Hochspannungstransformatordurchf{\"u}hrungen mit {\"O}l-Papier-Dielektrikum mittels dielektrischer Diagnose}, publisher = {Universit{\"a}tsverlag Ilmenau}, address = {Ilmenau}, language = {de} } @article{HartmannLoweAnhalt, author = {Hartmann, J{\"u}rgen and Lowe, D. and Anhalt, Klaus}, title = {Construction and validation of a platinum-carbon eutectic fixed-point}, series = {Metrologia}, journal = {Metrologia}, number = {45}, pages = {325 -- 329}, language = {en} } @article{ZinkKuechlerBerger, author = {Zink, Markus H. and K{\"u}chler, Andreas and Berger, Frank}, title = {Kompensation des Temperatureinflusses auf dielektrische Messungen im Zeitbereich zur Beschreibung von Isolierwerkstoffen}, series = {ETG-Fachtagung „Grenzfl{\"a}chen in elektrischen Isoliersystemen"}, journal = {ETG-Fachtagung „Grenzfl{\"a}chen in elektrischen Isoliersystemen"}, address = {Dresden}, language = {de} } @book{Zink, author = {Zink, Markus H.}, title = {Kerntechnik}, publisher = {Vogel Fachbuchverlag}, language = {de} } @book{Zink, author = {Zink, Markus H.}, title = {Kerntechnik}, publisher = {Vogel Fachbuchverlag}, language = {de} } @inproceedings{WirthSturmKuechleretal., author = {Wirth, Isabell and Sturm, Sebastian and K{\"u}chler, Andreas and Zink, Markus H. and Berger, Frank and Schnitzler, Tim}, title = {Ber{\"u}cksichtigung von Leitungs- und Polarisationsmechanismen in transienten FEM-Simulationen von HG{\"U}-Isoliersystemen}, series = {VDE-Hochspannungstechnik 2018, Berlin}, booktitle = {VDE-Hochspannungstechnik 2018, Berlin}, abstract = {The calculation of electrical field distributions in insulation systems for high voltage direct current (HVDC) transmission using the finite element method (FEM) usually only considers the dielectric properties in the form of permittivities and conductivities. Due to not sufficiently well simulated transient processes, state of the art is considering the polarization processes by equivalent network models. The application and implementation of polarization mechanisms in a FEM soft- ware closes this gap and allows calculating the electric field distribution more precisely. An implementation of additional differential equations, according to the RC-network model, describing the field dependent polarization mechanisms, are complementing the displacement and conduction current. Material equations and their parameters are determined by measuring the polarization and depolarization currents (PDC). These equations are necessary for both the RC-network models and the differential equations for the FEM. They can be adapted to the actual temperatures in the insulation system. Hence, the necessarily multidimensional electric field calculations of complex insulation systems with stationary or transient temperature-gradients are possible. The described calculation method is verified by reactionless fieldmill voltmeter measurements of transient voltage profiles at the grading foils of modified high voltage DC-bushings. A better accuracy is achieved for the simulation of transient and stationary potential distributions.}, language = {de} } @inproceedings{KochHohlochWirthetal., author = {Koch, Myriam and Hohloch, Jens and Wirth, Isabell and Sturm, Sebastian and Zink, Markus H. and K{\"u}chler, Andreas}, title = {Experimental and simulative analysis of the thermal behavior of high voltage cable joints}, series = {VDE-Hochspannungstechnik 2018, Berlin}, booktitle = {VDE-Hochspannungstechnik 2018, Berlin}, abstract = {Nowadays, cable systems are often preferred when deciding on the type of new transmission lines even in the high and extra high voltage range. One of the main reasons is the better public acceptance. In addition, the power to be transmitted in the grid is increasing leading to increased ohmic losses and thus, to higher thermal stress on the materials. The investigations in this contribution focus on cable joints, which represent important and decisive components of cable systems. In order to optimize the design and to ensure reliable operation over the entire service life, the temperature profile within these components is of special interest. For their detailed investigation, a test circuit was set up consisting of a cable section and sections with build-up stages of a cable joint. A large number of measuring points were defined also at points where no measurement is possible in normal operation. With a thermographic camera the surface temperature distributions were observed. With the laboratory setup temperature profiles under various load conditions were recorded. A detailed FEM model was built and verified with help of these measurements. The model permits the investigation of specific questions of cable systems such as the comparison of temperature loads resulting from normal operating conditions and of test procedures according to the relevant standards. Besides others the effect of stressing the insulation and sealing system by heating the inner conductor vs. heating from outside by surrounding water is discussed.}, language = {en} } @inproceedings{WirthReumannKuechleretal., author = {Wirth, Isabell and Reumann, Andreas and K{\"u}chler, Andreas and Zink, Markus H. and Berger, Frank and Langens, Achim and Schnitzler, Tim and Heil, B.}, title = {Measurement and simulation of transient field stresses and impacts on advanced insulation design and new test procedures for HVDC components}, series = {Cigre-Konferenz, Paris}, booktitle = {Cigre-Konferenz, Paris}, language = {en} }