Assessment of commutation failure in HVDC systems considering spatial-temporal discreteness of AC system faults

• DOI: 10.1007/s40565-018-0376-6
• Publication Date: 2018-02-05T03:23:09Z
• Authors: Huanhuan YANG; Zexiang CAI; Xiaohua LI; Chaoyun YU
• Keywords: Commutation; Voltage drop; Transient (computer programming); Position (finance)

This paper presents a novel commutation failure (CF) assessment method considering the influences of voltage magnitude drop, phase shift, and spatial-temporal discreteness AC system faults. The commutating voltage-time area is employed to analyze faults causing CF in high-voltage direct current systems, fault position time on are revealed. Based this, criterion proposed, further influence shift discreteness. Then this research develops new method, which does not rely electromagnetic transient simulations. A real case from China Southern Power Grid used verify practicability proposed by comparing with simulation results obtained using PSCAD/EMTDC.