Transformers

18

Transfer of HF Disturbances through Instrument Transformers

Wieslaw Jalmuzny and Andrzej Koszmider

CONTENTS

18.1  Introduction

18.2  Equivalent Circuit of the Instrument Transformer in the Research of the Transfer of HF Disturbances

18.3  Simulation Studies of Transfer of Disturbances

18.4  Experimental Studies of Disturbance Transfer

18.4.1  Testing of Transfer of Harmonic Disturbances

18.4.2  Testing on Pulse Signal Transfer

18.5  Conclusions

References

18.1  Introduction

In its practical aspect, the most common causes of electromagnetic high-frequency (HF) disturbances in the primary circuits of instrument transformers are the following: lightning strokes, bursts of very short transients generated by the circuit switching operations, ...