Ankündigung zum Thema
Werkstoffe und Betrachtungen für DC Anwendung
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Announcement for Materials and considerations for DC applications
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after the 6th symposium on 20 RCC-21st May 2015 in Berlin was completed in collaboration with universities, colleges and the industry with great echo and a proud success, we want to thank for the special quality of excellent and accessible for all departments lectures all participants.
In particular, we want to say thank you to Prof. Dr.-Ing. A. Kuchler (University Würzburg-Schweinfurt) for the scientific conference line and the special transitional lecture:
"Training and control of electrical fields at DC voltage stress" as well as Prof. Dr.-Ing. E. Gockenbach (Leibnitz University Hannover):
"Test Methods and diagnostic methods for the use of polymeric insulators in cables for high-voltage direct current transmissions" and Dr.-Ing. D. Rittinghaus, power cable Consult, Lindlar "energy transmission cable in Germany and International: state of the art and current projects" .
A very interesting look at the atomic force microscopy with ultra large scanning area entitled: "Make space charges on surfaces visible" and "superhydrophobicity by Salvinia effect" that hold held under water on the substrate surface layers of the atmosphere the body permanently dry
have let the Prof. Dr. Th. Schimmel, University of Karlsruhe, Institute of Applied Physics and Dr. S. Walheim, Karlsruhe Institute of Technology (KIT) will experience a lively and memorable overview in the research of the natural sciences.
Overall, the 6 RCC symposium pointed a special insight into the diversity of technical details and to open questions about the chemical and physico-chemical mechanisms that need to be cleared up even deeper in the contexts for the most part.
Here basic research -Themen- must be assigned that affect for example the interesting effect of lignins in use in HVDC Trafobau with temperature changes the electrical conductivity.
Thus, applications for DC cables and accessories could be envisaged.
The event was marked particularly by modified materials such as stuffed silicone gels and systems that will serve the application for use in electrical power engineering under the special requirements of high-voltage direct current transmission HVDC.
In the discussions on materials that are used in the field of DC XLPE high voltage cables and accessories, there are different views for property profile and the electrical requirements of EPDM and silicone products.
In order to evaluate the characteristics of these two polymers as DC Material for XLPE high voltage cables and accessories, both materials are from the perspective of macromolecular chemistry that deals with the structure, synthesis and properties of large molecular weights (z. B.> 10,000 g / mol) is concerned , are considered by the scientific side profound. Especially as the electric reliability must be guaranteed over a long lifetime.
Since we have to deal with electrical surface and space charges, the coordination chemistry of the transition metals is an important area for the realization of the electronic configuration of metal ions, which is strongly affected when looking at energy levels of the valence electrons, which the ligand field theory involves.
So the addition of doped inorganic pigments are an important feature to what lead to the targeted modification of electrical conductivity in the insulating material.
Coordination compounds have a specific spatial structure in which the ligands are arranged symmetrically around the center.
The coordination chemistry of molecular structure to the degradation shows with increasing oxidation state (the same charge of the central atom) electrostatic interference in the ligand field, which needs to be examined more closely and understood.
First, the advantages and disadvantages of both materials in the application are from today's perspective as opposed to AC material and assessed.
The information about the topics planning be expanded and continued continuously.