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Mitigating ferroresonance in coupling capacitor voltage transformers with ferroresonance suppressing circuits

Shahabi, S ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1109/EURCON.2009.5167728
  3. Publisher: 2009
  4. Abstract:
  5. In order to restrain ferroresonance in coupling capacitor voltage transformers (CCVT), two kinds of ferroresonance suppression circuits (FSCs) , are proposed in this paper: the resonant type, the fastsaturation reactor type which are connected to secondary side of CCVTs. Frequency domain analyses, for voltage ratio magnitude, are carried out for CCVTs to obtain preferable FSC. Furthermore, using surge suppressors such as metal oxide varistors (MOV) to improve the performance of the FSCs is investigated. Time domain simulations demonstrate that ferroresonance can be cleared in few cycles in presence of FSCs. The Electromagnetic Transients Program (EMTP) is used for modeling and fine-tuning the FSCs. © 2009 IEEE
  6. Keywords:
  7. CCVT ; Ferroresonance ; Frequency response characteristic ; FSC ; Coupling capacitor ; Electromagnetic transients programs ; Ferroresonance ; Few-cycle ; Frequency response characteristic ; Metal oxide varistor ; Secondary-side ; Surge suppressors ; Time-domain simulations ; Voltage ratios ; Capacitance ; Capacitors ; Electric surges ; Frequency response ; Magnetic resonance ; Metallic compounds ; Surge protection ; Transients ; Solar concentrators
  8. Source: IEEE EUROCON 2009, EUROCON 2009, St. Petersburg, 18 May 2009 through 23 May 2009 ; 2009 , Pages 817-822 ; 9781424438617 (ISBN)
  9. URL: https://ieeexplore.ieee.org/document/5167728