Objective – The primary objective of this work is to assess and outline improvement paths for Instrument Transformers
(ITs) to accurately measure harmonics as a key Power Quality (PQ) parameter within electrical grids. Additionally, it
highlights the importance of considering Inductive Voltage Transformers (IVTs) as a cost-effective and efficient solution
for PQ measurement.
Findings – Harmonics, due to their random nature and frequency variability, significantly impact measurement accuracy
and grid stability. IVTs, which achieve high accuracy with a 0.1% error in transformation ratio at standard power
frequencies (50/60 Hz), face challenges in high-frequency scenarios. At these frequencies, parasitic capacitances and core
losses can reduce accuracy and lead to resonance phenomena.
Originality – The work aims to address the problem from three distinct angles: evaluating the performance of IVTs,
developing and integrating new compensation systems on operational IVTs and modifying the internal design of IVTs if
high-frequency requirements are not met. This approach is innovative from an industrial perspective, providing a unique
opportunity to test a wide range of IVTs and directly influence manufacturing processes, thereby facilitating
improvements in both design and performance.