Prommetta J, Schindler J, Jäger J, Keil T, Butterer C, Ebner G (2020)
Publication Type: Journal article
Publication year: 2020
Book Volume: 35
Pages Range: 2896-2904
Article Number: 9112359
Journal Issue: 6
DOI: 10.1109/TPWRD.2020.3000731
The new characteristics and phenomena of hybrid AC/DC transmission grids challenge the conventional protection concepts. In hybrid AC/DC overhead line systems, AC and DC systems are located on the same support structure. As a result, electromagnetic and galvanic interactions between the AC- and the DC-line influence the AC-protection and the DC-control in a novel and complex way. This paper presents key findings and solutions from a current 400-kV-hybrid AC/DC overhead line project in Germany. The focus is on AC/DC intersystem faults, i.e. galvanic contact between DC and AC systems. Fault detection and fault response of the AC-protection and the DC-control as well as a proper AC/DC protection coordination are discussed. The paper illustrates the challenges of a secure and dependable fault clearing and indicates solution methods. The findings of this paper are based on EMT simulations with detailed PSCAD-models of the hybrid AC/DC overhead line and the VSC-converters. Laboratory protection tests have been conducted and confirmed the results.
APA:
Prommetta, J., Schindler, J., Jäger, J., Keil, T., Butterer, C., & Ebner, G. (2020). Protection Coordination of AC/DC Intersystem Faults in Hybrid Transmission Grids. IEEE Transactions on Power Delivery, 35(6), 2896-2904. https://doi.org/10.1109/TPWRD.2020.3000731
MLA:
Prommetta, Jonas, et al. "Protection Coordination of AC/DC Intersystem Faults in Hybrid Transmission Grids." IEEE Transactions on Power Delivery 35.6 (2020): 2896-2904.
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