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Short-circuit effects in HV substations with strained conductors-systematic full scale tests and a simple calculation method

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3 Author(s)
Herrmann, B. ; FGH Forschungsgemeinschaft fur Hochspannungs und Hochstromtechnik, Mannheim, West Germany ; Stein, N. ; Kiessling, G.

The dynamic short-circuit stresses in HV (high-voltage) substations with flexible conductors are determined by a large number of parameters. Tensile forces, stresses, and conductor displacements have been studied for short-circuit currents of 20-40 kA (RMS) in test arrangements representing strained conductors of typical 123 kV and 420 kV substations at a span length of 40 m. A simple calculation method based on the approach of IEC Publication 865 and DIN VDE 0103, but taking the short-circuit duration into account, has been developed, leading to reduced forces and displacements in the case of brief current flow

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Power Delivery, IEEE Transactions on  (Volume:4 ,  Issue: 2 )