TY - GEN

T1 - Analysis of an inductive medium voltage transformer with compensated first natural frequency

AU - Buchhagen, C.

AU - Pawellek, A.

AU - Hofmann, L.

AU - Däumling, H.

PY - 2013/7/1

Y1 - 2013/7/1

N2 - Common inductive voltage transformers have natural frequencies in the range of some thousand hertz. Thus, their use for harmonic monitoring has to be assessed. By doing some changes in the design of voltage transformers, it is possible to compensate the first resonance. Therefore, it could be possible to use inductive voltage transformers beyond the first natural frequency. However, it is interesting to know if the resonance is still present in the transformer, but not measurable at the secondary coil. With a specially manufactured voltage transformer, it was possible to measure the frequency responses of every winding layer. It is shown how it is possible to measure them and how the voltage is distributed inside the inductive voltage transformer at the first resonance.

AB - Common inductive voltage transformers have natural frequencies in the range of some thousand hertz. Thus, their use for harmonic monitoring has to be assessed. By doing some changes in the design of voltage transformers, it is possible to compensate the first resonance. Therefore, it could be possible to use inductive voltage transformers beyond the first natural frequency. However, it is interesting to know if the resonance is still present in the transformer, but not measurable at the secondary coil. With a specially manufactured voltage transformer, it was possible to measure the frequency responses of every winding layer. It is shown how it is possible to measure them and how the voltage is distributed inside the inductive voltage transformer at the first resonance.

KW - coils

KW - compensation

KW - frequency response

KW - harmonic distortion

KW - potential transformers

KW - resonance

KW - transformer windings

KW - voltage distribution

KW - winding

KW - frequency response measurement

KW - secondary coil

KW - resonance compensation

KW - harmonic monitoring

KW - natural frequency compensation

KW - inductive medium voltage transformer

KW - Frequency measurement

KW - Windings

KW - Resonant frequency

KW - Voltage measurement

KW - Voltage transformers

KW - Coils

KW - Frequency response

KW - Capacitance

KW - Instrument transformers

U2 - 10.1109/PESMG.2013.6672839

DO - 10.1109/PESMG.2013.6672839

M3 - Conference contribution

SP - 1

EP - 5

BT - 2013 IEEE Power Energy Society General Meeting

ER -