Title :
Measurement of transient electric field emission from a GIS during switching operations
Author :
Rao, M. Mohana ; Thomas, M. Joy ; Singh, B.P. ; Rajagopalan, P.
Author_Institution :
BHEL R&D, Vikas Nagar, Hyderabad, India
Abstract :
In a gas insulated substation (GIS), transient electric fields are emitted during switching operations. Measurements are required to characterize the electromagnetic interference (EMI) present in a GIS and to control the emission level below the susceptibility of the sophisticated control equipment associated with the modern GIS. A 245 kV GIS model has been used in the present study to simulate the gas insulated switchyard and the transient E-field signal is captured both in time and frequency scale using a high bandwidth CRO and a spectrum analyzer respectively. E-field measurements is carried out in the frequency range of 25 MHz to 250 MHz. The validation of the scale down measurement is confirmed by comparing the frequency content of the time varying transient E-field signal with spectrum analyzer records at different scanning frequencies.
Keywords :
electric field measurement; electromagnetic interference; gas insulated substations; switching transients; 245 KV; 25 to 250 MHz; E-field measurements; EMI; GIS model; electromagnetic interference; emission level; frequency content; gas insulated substation; gas insulated switchyard; high bandwidth CRO; scale down measurement; sophisticated control equipment; spectrum analyzer; switching operations; transient E-field signal; transient electric field emission; Electric variables measurement; Electromagnetic interference; Electromagnetic measurements; Electromagnetic transients; Frequency; Gas insulation; Geographic Information Systems; Spectral analysis; Switchgear; Transient analysis;
Conference_Titel :
Electromagnetic Interference and Compatibility, 2003. INCEMIC 2003. 8th International Conference on
Print_ISBN :
81-900652-1-1
DOI :
10.1109/ICEMIC.2003.1287863
