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UHVDC converter transformer purification device manufacturer

This document gives an overview of the HVDC Protection System· PDF fileconverter equipment from dielectric stresses by interlocking the converter transformer tap changers. Dielectric stresses are caused by the AC side voltage.The interlocking prevents a further increase of the ideal no-load direct voltage UDI0. The UDI0 is calculated by using the AC bus voltage measurement UAC, the tap-changer position and the ...

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