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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Ping Zhang Youhua Wang Xinpeng Nie Weili Yan Haijiao Zhang Yu Zhang |
| Copyright Year | 2008 |
| Description | Author affiliation: Liaoyang Pet. & Chem. Subcompany, Liaoyang (Yu Zhang) || Baoding Tianwei Group, Baoding (Haijiao Zhang) || Province-Minist. Joint Key Lab. of Electromagn. Field & Electr. Apparatus Reliability, Hebei Univ. of Technol., Tianjin (Ping Zhang; Youhua Wang; Xinpeng Nie; Weili Yan) |
| Abstract | Calculation of over-voltage distribution of transformer windings under very fast transient over-voltage (VFTO) is very important to insulate design of transformer windings. In order to investigate over-voltage distribution of transformer windings under VFTOs, firstly in the case of easily destroyed former several windings, each winding is modeled as one unit, others are modeled using two windings as one unit, then a model of transformer windings based on multiconductor transmission line model (MTLM) is developed and calculated based on finite-difference time-domain method(FDTD). Secondly, vector fitting method is adopted to deal with frequency-dependent parameters by expanding time-domain form of internal impedance of transformer windings into a sum of finite exponential function, which is easy for time-domain convolution. An actual autotransformer windings model is studied, calculated results based on FDTD method are consistent with electromagnetic transient program (EMTP) simulation results. |
| Starting Page | 1 |
| Ending Page | 5 |
| File Size | 237385 |
| Page Count | 5 |
| File Format | |
| ISBN | 9781889335384 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2008-09-28 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | TSI ENTERPRISES, INC. |
| Subject Keyword | Transient analysis Windings Time domain analysis Finite difference methods EMTP Power system transients Power transformer insulation Multiconductor transmission lines Fitting Frequency |
| Content Type | Text |
| Resource Type | Article |
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