We propose two schemes for improving the performance of electromagnetic voltage transformers. The first uses a high gain amplifier in conjunction with a capacitive divider that serves as a reference. The second uses a unity gain amplifier. Simulation studies and experimental results are shown in order to validate the methods.

A. Palani

V. Jayashankar

Amplifiers (electronic)

Computer simulation

Error compensation

HIGH GAIN AMPLIFIER

VOLTAGE TRANSFORMER

Electric transformers

Fulltext

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

IEEJ Transactions on Power and Energy

It is shown with supporting experimental results that the error of avoltage transformer supplying a burden can be brought down to the value on open-circuit, using an amplifier whose output is approximately equal to the errorvoltage. The scheme permits the normal requirement that one end of the burden be earthed. Copyright © 1979 by The Institute of Electrical and Electronics Engineers, Inc.

IEEE Transactions on Instrumentation and Measurement

Electronic Error-Compensation of avoltage Transformer

IEEE Transactions on Power Delivery

Electronic based high-voltage measuring transformers

Proceedings of the Institution of Electrical Engineers

Use of a voltage follower for the error reduction of a voltage transformer

Electronically compensated voltage transformer with capacitive reference

Journal	IEEJ Transactions on Power and Energy
ISSN	03854213
Open Access	Yes