Very first transient overvoltages in GIS

A differentiating/integrating (D/I) system which does not change GIS (gas insulated substation) configuration is developed for the measurement of very fast transient overvoltages (VFTO) occurring in GIS. Then the numerical computation of VFTO is studied on the base of field measurement results. Some...

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Bibliographische Detailangaben
Hauptverfasser:	Zhang Wenyuan, Shi Baozhuang, Qiu Yuchang
Format:	Tagungsbericht
Sprache:	eng
Schlagworte:	Current transformers Electrodes Frequency Geographic Information Systems Low voltage Parasitic capacitance Power system analysis computing Power system reliability Power system transients Surges
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Beschreibung
Zusammenfassung:	A differentiating/integrating (D/I) system which does not change GIS (gas insulated substation) configuration is developed for the measurement of very fast transient overvoltages (VFTO) occurring in GIS. Then the numerical computation of VFTO is studied on the base of field measurement results. Some factors influencing VFTO magnitude are analyzed through computation. The possible reason why VFTO may cause more failures in 300 kV and above GIS is presented.
DOI:	10.1109/ICPST.1998.728955