Design and Application of Calibration Current Source for UHVDC Current Transformer

DOI

10.2991/mmsa-18.2018.110How to use a DOI?

Keywords

DC transformer; calibration current source; high frequency transformer

Abstract

The direct current (DC) current transformers in ultra high-voltage direct current (UHVDC) converter stations have problems such as inconvenient on-site calibration. In order to solve these problems, according to the impedance characteristics of the UHVDC current transformers, the current output scheme for the individual control of multiple current modules is determined. Based on this, a calibration current source is designed, including a DC/DC converter main circuit, a high-frequency transformer, a PWM output control circuit, and a peripheral circuit. The calibration current source has been verified by tests. The results show that the output DC current accuracy is 0.1%, 1 minute stability reaches 0.02%, and accurate regulation can be achieved.

Copyright

© 2018, 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  - Hao Pan
AU  - Ke Wang
AU  - An Wang
AU  - Fangrong Zhou
PY  - 2018/03
DA  - 2018/03
TI  - Design and Application of Calibration Current Source for UHVDC Current Transformer
BT  - Proceedings of the 2018 International Conference on Mathematics, Modelling, Simulation and Algorithms (MMSA 2018)
PB  - Atlantis Press
SP  - 496
EP  - 498
SN  - 1951-6851
UR  - https://doi.org/10.2991/mmsa-18.2018.110
DO  - 10.2991/mmsa-18.2018.110
ID  - Pan2018/03
ER  -