DL/T 911-2004 Translated English of Chinese Standard. (DLT 911-2004, DL/T911-2004, DLT911-2004): Frequency response analysis on winding deformation of power transformers
https://www.chinesestandard.net, 27. feb. 2014 - 21 síđur
This Standard specifies the basic requirements in the frequency response analysis on deformation of transformer winding. This Standard is applicable to power transformers of 6kV or higher voltage class, and other transformers for special purpose.
Annex A Normative Auxiliary judgment on deformation of transformer
References and Original Chinese Documents
amplitude frequency response analysis on deformation Analysis on Winding applied sine excitation capacitance-to-ground characteristics curve usually coaxial shielded cable comparison method refers conducting the Vertical Correlation factor crest or wave crests and wave curve usually indicates curves of low deformation Figure deformation of transformer distributed inductance Electric Power Research equivalent network excitation-port voltage externally applied sine frequency response analysis frequency response characteristics frequency response curves Frequency-selecting and wave-filtering inter-pie capacitance linear dual-port network low voltage windings mutual inductance obvious variation ofthe original amplitude frequency output impedance output port Power Research Institute Power Transformers refers to conducting response characteristics curves response-port voltage short-circuit current rush signal detection ports signal source Standard suffering from short-circuit sweeping frequency mode tap-switch tested transformer winding testing instrument three-phase windings transfer function transformer bushing Typical amplitude frequency variance in amplitude wave crest wave trough positions winding deformation winding through coaxial windings of SF windings of SFPSZ