The simulation of ferroresonance measures of PT based on the nonlinear resistance

DOI

10.2991/isrme-15.2015.199How to use a DOI?

Keywords

Electromagnetic voltage transformer; Ferromagnetic resonance; Iron loss; Nonlinear resistor; Three harmonic filter

Abstract

Earth capacitance of system line can be matched with inductance parameters of electromagnetic voltage transformer (PT), thereby leading to ferromagnetic resonance in the power system under the condition of instantaneous single-phase grounding and other fault types. Application scope limitations and deficiencies of the existing harmonic elimination measures are analyzed and compared on the basis of analyzing formation mechanism of PT ferromagnetic resonance. Resonance-eliminating measures of PT neutral point through nonlinear resistance grounding is proposed, in addition simulation analysis verification is conducted. Simulation verifies that the resonance-eliminating measures have excellent inhibition effect on fundamental resonance, frequency division resonance and high-frequency resonance. A solution is proposed aiming at the problem of high voltage on PT low voltage side due to PT neutral point through nonlinear resistor, namely three harmonic filter is added on PT center. Simulation analysis is conducted, and simulation result verifies the feasibility of the measures.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xianzhong Long
AU  - Xiaobo Liu
PY  - 2015/04
DA  - 2015/04
TI  - The simulation of ferroresonance measures of PT based on the nonlinear resistance
BT  - Proceedings of the 2015 International Conference on Intelligent Systems Research and Mechatronics Engineering
PB  - Atlantis Press
SP  - 958
EP  - 962
SN  - 1951-6851
UR  - https://doi.org/10.2991/isrme-15.2015.199
DO  - 10.2991/isrme-15.2015.199
ID  - Long2015/04
ER  -