Refurbishing Existing MVAC Distribution Cables to Operate Under DC Conditions

Conference paper (2016)

Authors

A. Shekhar DC systems, Energy conversion & Storage -

E. Kontos DC systems, Energy conversion & Storage -

A. R. Mor DC systems, Energy conversion & Storage -

L.M. Ramirez Elizondo DC systems, Energy conversion & Storage -

P. Bauer DC systems, Energy conversion & Storage -

Research Group

DC systems, Energy conversion & Storage () (TU Delft)

Topology Temperature dependence Dc Capacity Distribution Dc links Medium voltage Cables Refurbishing Voltage control Electric fields Power cables Power cable insulation Ac Dynamic rating Hybrid grid

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Published Date

2016

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Electrical Sustainable Energy

Research Group

DC systems, Energy conversion & Storage

Abstract

Refurbishing existing ac distribution cables to operate under dc conditions can offer several advantages in terms of capacity enhancement, efficiency and flexibility in power and voltage control, among others. In this paper, technical aspects such as insulation ageing, capacity and efficiency enhancement are explored. A novel idea of dynamic cable voltage rating based on the temperature dependent electric field is developed. The proposed algorithm can be incorporated in the dc link converters to obtain additional efficiency and capacity gains. Finally, challenges in the presented concept are highlighted.