Resistively shielded optical voltage transducer

TitleResistively shielded optical voltage transducer
Publication TypeConference Paper
Year of Publication2001
AuthorsRahmatian, F., P. P. Chavez, and N. A. F. Jaeger
Conference NameTransmission and Distribution Conference and Exposition, 2001 IEEE/PES
Pagination117 -121 vol.1
Keywords-750 kV, 13.8 kV, 20 mm, 275 kV, 650 kV, ANSI/IEEE 0.3 % accuracy classes, chopped impulse tests, clean fog test, dynamic field disturbances, electric field effects, electric field measurement, extreme field disturbances, Gaussian quadrature, high-voltage optical voltage transducer, high-voltage techniques, hollow-core polymer insulator, HV dielectric tests, HV transmission systems, ice, impulse testing, lightning impulse tests, low-pressure dry nitrogen gas, melting ice, optical sensors, partial discharge, polymer insulators, power frequency withstand, power system measurement, resistively shielded electric field sensors, salt-clay pollution, shielding, testing, Transducers, voltage measurement

A high-voltage (HV) optical voltage transducer (OVT) using resistively shielded electric field sensors is presented for use in HV transmission systems. The OVT is built in a hollow-core polymer insulator filled with low-pressure dry nitrogen gas. A 138 kV prototype has been tested for accuracy under various severe dynamic field disturbances including salt-clay pollution (clean fog test) and melting ice on the insulator. The test results show that the OVT meets ANSI/IEEE 0.3 % accuracy classes under these extreme field disturbances. The prototype has also been tested and successfully passed various HV dielectric tests including lightning impulse tests (BIL) at plusmn;650 kV, chopped impulse tests at -750 kV, power frequency withstand at 275 kV, and partial discharge lt;5 pC


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