Chair of Electromagnetic Theory

Microvaristors in Polymer Insulation Systems -- Clarification of Possible Applications in Electrical Power Engineering and Investigations of Operating Behavior

Project member
Hanyu Ye, M.Sc. (EE)

Cooperation partner
Prof. Dr.-Ing.
Volker Hinrichsen
(TU Darmstadt, FG Hochspannungstechnik)
Dipl.-Ing. Daniel Weida
(Helmut-Schmidt-Universität / UniBW Hamburg)
ABB, Aenea, cmc Klebetechnik, GISMA, HSP, Krempel, Lackwerke Peters, Lapp Insulators, Momentive, Pfisterer, RCC Polymertechnik, Siemens, Synflex, von Roll, Wacker, ZVEI

Project duration
2008-2010 (from 10/2009 at BUW)

electro-quasistatic fields, electric power transmission, high-voltage DC cable, nonlinear organic materials, space charges, charge injection, charge movement

AiF e.V. Federation of Industrial Research Associations "Otto von Guericke" e.V. under grant no. 15455 N /FSt.3

Project description

In this applied collaborative research project, funded by the Arbeitskreis Industrieforschung (AIF), suitable simulation tools are to be developed for the theoretical preliminary clarification of potential applications of novel microvaristor-filled polymeric insulating materials. For this purpose, test and model arrangements as well as characterizing test methods will be developed together with the project partners. Promising applications will be realized and experimentally investigated in sub-working groups. Processability issues should be addressed, including aspects such as manufacturing reliability, repeatability, and consistency of electrical and mechanical properties. Finally, the complex aging behavior/lifetime will be addressed with the aim of developing suitable requirements and test methods. In addition, new microvaristor-filled or microvaristor-coated insulation systems such as coated long rod insulators, end glow protection systems in electrical high-voltage machines and cable terminations will be investigated with respect to this behavior and optimized if necessary. A comparison should always be made with materials and arrangements already available on the market in order to evaluate the advantages and disadvantages of the new material from both a technical and an economic point of view. The chair TET contributes to the development and application of suitable numerical simulation methods for nonlinear microvaristor-filled functional layers for the development and optimization of refractive field control in complex components of high-voltage technology. The basis of this research is the finite elements research simulation package MEQSICO (Magnet-/Electro-Quasistatic SImulation COde) developed at the chair TET.

Project-related publications

D. Weida, C. Richter and M. Clemens, "Design of ZnO Microvaristor Material Stress-Cone for Cable Accessories", IEEE Transactions on Dielectrics and Electrical Insulation, vol. 18, no. 4, pp. 1262-1267, Aug. 2011.
D. Weida, T. Steinmetz and M. Clemens, "Improved Accuracy of Electro-Quasistatic Simulations of Large-Scale 3D High Voltage Insulators With Nonlinear Material Layers", COMPEL, Special Issue Selected Papers from the 21st Symposium on Electromagnetic Phenomena in Nonlinear Circuits. (Presented at: XXI Symposium on Electromagnetic Phenomena in Nonlinear Circuits (EPNC 2010), Dortmund und Essen, Germany, 29.06.-02.07.2010), vol. 30, no. 3, pp. 1109-1117, 2011.
D. Schmidthäusler and M. Clemens, "Model-Order Reduction of Electro-Quasistatic Field Formulations Using Proper Orthogonal Decomposition", 16th European Conference on Mathematics for Industry (ECMI 2010), Wuppertal, Germany, 26.-30.07.2010. Program & Book of Abstracts, pp. 117, Jun. 2010.
D. Weida, S. Böhmelt and M. Clemens, "Design of ZnO Microvaristor Corona Protection for Electrical Machines", Conference record of the 2010 IEEE International Symposium on Electrical Insulation (ISEI 2010), San Diego, USA, 06.-10.06.2010, (IEEE Catalog No. CFP101SE-ART)., pp. 648-651, Jun. 2010.

ISBN: 978-1-4244-6301-5

D. Weida, C. Richter and M. Clemens, "Design of High-Voltage Cable Accessories Using ZnO Microvaristor Material Based on FEM Simulations", International Power Modulators and High Voltage Conference (IPMHVC 2010) 23.-27.05.2010, Atlanta, USA, pp. 94-97, Mai 2010.

ISBN: 978-1-4244-7131-7

D. Weida, J. Nevoigt, H. Ye, M. Clemens, D. Stefanini and J. Seifert, "Effects of Microvaristor Material on Partial Discharges upon Composite Insulators in Rain Test", 2010 IEEE International Power Modulators and High Voltage Conference (IPMHVC 2010) 23.-27.05.2010, Atlanta, USA, pp. 497-500, Mai 2010.

ISBN: 978-1-4244-7131-7

M. Clemens, T. Steinmetz and D. Weida, "Advanced Simulation Methods for Components in High-Voltage Systems Using Nonlinear Electric Field Stress Grading Materials", 8th International Symposium on Electric and Magnetic Fields (EMF 2009), Mondovi, Italy, 26.-29.05.2009. Book of Summaries, pp. 15-16, Mai 2009.
D. Weida, T. Steinmetz and M. Clemens, "Simulation des elektrischen Verhaltens von polymeren Isoliersystemen mit Mikrovaristoren", RCC Fachtagung &quote;Werkstoffe&quote;, Berlin, Germany, 06.-07.05.2009. Tagungsband, pp. 75-86, Mai 2009.
D. Weida, T. Steinmetz and M. Clemens, "Electro-Quasistatic High Voltage Field Simulations of Large Scale Insulator Structures Including 2D Models for Nonlinear Field Grading Material Layers", IEEE Transactions on Magnetics, (Presented at 11th Biennial IEEE Conference on Electromagnetic Field Computation (CEFC 2008), Athens, Greece, 11.-15.05.08.), vol. 45, no. 3, pp. 980-983, Mä. 2009.
D. Weida, T. Steinmetz and M. Clemens, "Improved Accuracy of Electro-Quasistatic Simulations of Large-Scale 3D High Voltage Equipment Including Nonlinear Field-Grading", 17th Conference on the Computation of Electromagnetic Fields (COMPUMAG 2009), Florianopolis, Brasilien, 25.-29.11.2009. Extended Abstract; Proceedings, pp. 123 - 124, 2009.

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