Influence of Ion Current on Current Transformes of AC Systems in Near Vicinity of DC Systems
Romeis C, Jäger J, KS, Keil T (2015)
Publication Type: Conference contribution, Conference Contribution
Publication year: 2015
Conference Proceedings Title: 2015 IEEE Eindhoven PowerTech
Event location: Eindhoven
ISBN: 978-1-4799-7693-5
Abstract
Equipping one support structure with DC and AC systems in parallel can increase the transport capacity of existing transmission corridors. The constant electric field of the DC system induces a constant DC component into the AC systems in near vicinity. All magnetic equipment including an iron core is in danger to saturate. Especially current transformers (CTs) for protection issues can be influenced in the way that the time-to-saturation is reduced. Therefore, maybe the protection relays are affected adversely and the selectivity is harmed. This paper evaluates this major impact by determining the transient dimensioning factor and the time-to-saturation in presence of a constant DC component in the fault current and remanent flux. The influence on the transient dimensioning factor is marginal and can be almost neglected. But for metering cores it could be a problem and should be tested because of the different excitation curves.
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Germany (DE)How to cite
APA:
Romeis, C., Jäger, J., , K.S., & Keil, T. (2015). Influence of Ion Current on Current Transformes of AC Systems in Near Vicinity of DC Systems. In 2015 IEEE Eindhoven PowerTech. Eindhoven, NL.
MLA:
Romeis, Christian, et al. "Influence of Ion Current on Current Transformes of AC Systems in Near Vicinity of DC Systems." Proceedings of the 2015 IEEE PowerTech, Eindhoven 2015.
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