Title :
FRA low frequency characteristic study using duality transformer core modeling
Author :
Peng Ang, Swee ; Li, Jie ; Wang, Zhongdong ; Jarman, Paul
Author_Institution :
Sch. of Electr. & Electron. Eng., Univ. of Manchester, Manchester
Abstract :
In this paper a simulation model for a three-phase, three-limb core-type 1000 MVA 400/275/13 kV autotransformer is presented to study Frequency Response Analysis (FRA). The equivalent electric circuit of the magnetic core is derived based on the Principle of Duality. Leakage inductances and capacitances of windings are also included in the model. All the parameters are determined using manufacturer data sheet. FRA simulation results up to 1 kHz are validated by the measurement results. The FRA low frequency characteristics of transformers are first time explained through modeling and the dominating parameters for these characteristics identified.
Keywords :
equivalent circuits; frequency response; transformer cores; core-type autotransformer; duality transformer core; equivalent electric circuit; frequency response analysis; low frequency characteristic; magnetic core; three-limb autotransformer; three-phase autotransformer; voltage 13 kV; voltage 275 kV; voltage 400 kV; Analytical models; Capacitance; Circuit simulation; Frequency response; Magnetic analysis; Magnetic circuits; Magnetic cores; Manufacturing; Transformer cores; US Department of Transportation; Antiresonance and Resonance; Frequency Response Analysis (FRA); Power Transformers; Principle of Duality; Three-limb core;
Conference_Titel :
Condition Monitoring and Diagnosis, 2008. CMD 2008. International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-1621-9
Electronic_ISBN :
978-1-4244-1622-6
DOI :
10.1109/CMD.2008.4580426
