Analysis of transient EMI of air-insulated substation disconnect operation based Wigner-Ville distribution

Author

Tao Jingsong ; Shixiu, Chen ; Xiaoxing, Zhang

Author_Institution

Sch. of Electr. Eng., Wuhan Univ., China

Volume

3

fYear

2005

fDate

8-12 Aug. 2005

Firstpage

851

Abstract

The operations experiments of disconnect have been given in 220 kV air insulated substation, the conductive signals of electromagnetic interference have been obtained from potential transformer (PT) and capacitance voltage transformer (CVT) and primary analysis has been given. In order to find out the relationship of time-frequency domain and signal energy, Wigner-Ville distribution (WVD) is used to further analysis. The result reveals that the main frequency of the interference signal is mainly connected with parameters of the equipments in the substation and the configuration of the substation, other than disconnect operation time and speed. It is possible to filter the energy of high-frequency caused by disconnect or breaker operation.

Keywords

Wigner distribution; air insulation; electromagnetic interference; potential transformers; substations; time-frequency analysis; Wigner-Ville distribution; air insulated substation; capacitance voltage transformer; electromagnetic interference; potential transformer; signal energy; substation disconnect operation; time-frequency domain; transient EMI; Capacitance-voltage characteristics; Electromagnetic analysis; Electromagnetic interference; Electromagnetic transients; Power transformer insulation; Signal analysis; Substations; Time frequency analysis; Transient analysis; Voltage transformers;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 2005. EMC 2005. 2005 International Symposium on

Print_ISBN

0-7803-9380-5

Type

conf

DOI

10.1109/ISEMC.2005.1513644

Filename

1513644