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Investigation and Mitigation of Overvoltage Due to Ferroresonance in the Distribution Network
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 Title & Authors
Investigation and Mitigation of Overvoltage Due to Ferroresonance in the Distribution Network
Sakarung, Preecha; Bunyagul, Teratam; Chatratana, Somchai;
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This paper reports an investigation of overvoltages caused by ferroresonance in the distribution system, which consists of a bank of open-delta single-phase voltage transformers. The high voltage sides of the voltage transformer are connected to the distribution system via three single-phase fuse cutouts. Due to the saturation characteristic of the transformer cores, ferroresonance can occur in the condition that the transformer is energized or deenergized with single-phase switching operation of the fuse cutouts. The simulation tool based on EMTP is used to investigate the overvoltages at the high side of voltage transformer. Bifurcation diagrams are used to present the ferroresonance behavior in ranges of different operating conditions. The simulation results are in good agreement with the results from the experiment of 22 kV voltage transformers. The mitigation technique with additional damping resistors in the secondary windings of the voltage transformers will be introduced. Brief discussion will be made on the physical phenomena related to the overvoltage and the damage of voltage transformer.
Ferroresonance;Voltage Transformer;Bifurcation Diagram;EMTP;PSCAD/EMTDC;
 Cited by
Ferroresonance in subharmonic 3rd mode in an inductive voltage transformer, a real case analysis, International Journal of Electrical Power & Energy Systems, 2014, 61, 318  crossref(new windwow)
P. Sakarung and S. Chatratana, 'Application of PSCAD/ EMTDC and Chaos Theory to Power System Terroresonanc eAnalysis', International Conference on Power Systems Transients, Canada, June 19-23, 2005

Robert Hoerauf and Neil Nichols, 'Avoiding Potential Transformer Ferroresonant Problems in Industrial Power Systems', Industrial and Commercial Power Systems Technical Conference, pp. 61 - 68 (1989)

William S. Vilcheck and Michael V. Haddad, 'Voltage Transformer Ferroresonance in Cogeneration Substation', Pulp and Paper Industry Technical Conference, pp. 148 - 158 (1992)

D. Shein and S. Zissu, 'Domains of Ferroresonance Occurrence in Voltage Transformers with or without Damping Reactor', Eighteenth Convention of Electrical and Electronics Engineers in Israel, pp. 1.5.2/1 - 1.5.2/5 (1995)

M. R. Iravani et-al, 'Modeling and Analysis Guidelines for Slow Transients Part III: The Study of Ferroresonance', IEEE Trans. On Power Delivery, Vol. 15, No. 1, pp. 255-265, Jan. 2000 crossref(new window)