Journal
JOURNAL OF MODERN POWER SYSTEMS AND CLEAN ENERGY
Volume 6, Issue 5, Pages 1055-1065Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1007/s40565-018-0376-6
Keywords
Commutation failure; Spatial-temporal discreteness; Phase shift; Assessment method
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Funding
- National Natural Science Foundation of China [51407079]
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This paper presents a novel commutation failure (CF) assessment method considering the influences of voltage magnitude drop, phase shift, and spatial-temporal discreteness of AC system faults. The commutating voltage-time area is employed to analyze the spatial-temporal discreteness of AC system faults causing CF in high-voltage direct current systems, and the influences of fault position and fault time on CF are revealed. Based on this, a novel CF criterion is proposed, further considering the influence of voltage phase shift and the spatial-temporal discreteness. Then this research develops a new CF assessment method, which does not rely on electromagnetic transient simulations. A real case from the China Southern Power Grid is used to verify the practicability of the proposed method by comparing with simulation results obtained using PSCAD/EMTDC.
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