Design of equivalent coils for anti- interference testing of heavy current transformers

Gao, Y.C; Zhao, W; Qu, K.F.; Li, H.; Shao, H.M.; Wang, Qing; Huang, Songling

Abstract

Heavy current transformers (HCTs) for large generators are intensively interfered by the stray magnetic field produced by heavy adjacent currents, and therefore, anti-interference testing is a crucial process to assure the robustness of HCT products. However, the generation of the interference involves multiphase heavy currents, which are difficult to produce in testing environments, and equivalent testing coils have become an emerging solution to the testing. In this paper, an improved parameter determination algorithm is proposed for the traditional two-segment testing coil configuration, and furthermore, a novel multi-segment testing coil configuration is proposed for better equivalence of the multiphase interference. The effectiveness of the two configurations are thoroughly analyzed by FEM-based simulations as well as physical experiments.

Citation

Gao, Y., Zhao, W., Qu, K., Li, H., Shao, H., Wang, Q., & Huang, S. (2018). Design of equivalent coils for anti- interference testing of heavy current transformers. International Journal of Applied Electromagnetics and Mechanics, 56(2), 211-223. https://doi.org/10.3233/jae-170052

• Journal Article Type: Article
• Acceptance Date: Nov 22, 2017
• Online Publication Date: Jan 27, 2018
• Publication Date: Jan 27, 2018
• Deposit Date: Mar 4, 2018
• Publicly Available Date: Mar 27, 2018
• Journal: International Journal of Applied Electromagnetics and Mechanics
• Print ISSN: 1383-5416
• Electronic ISSN: 1875-8800
• Publisher: IOS Press
• Peer Reviewed: Peer Reviewed
• Volume: 56
• Issue: 2
• Pages: 211-223
• DOI: https://doi.org/10.3233/jae-170052
• Public URL: https://durham-repository.worktribe.com/output/1338150