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Fault surges on HVDC transmission lines in both bipolar operation and monopolar metallic return operation models and comparison with field test results

Journal Article · · IEEE Trans. Power Appar. Syst.; (United States)
OSTI ID:5224016
The analysis of abnormal overvoltages caused by line-to-ground faults are important for the insulation design on the HVDC transmission system. Main line overvoltages in bipolar operation mode and neutral line overvoltages in monopolar metallic return operation mode were analyzed for the Pacific HVDC Intertie system, which was selected as the system for this analysis, and the results were compared with the field test result. Results obtained agreed well with the measurement results in peak values of the overvoltages, waveforms and voltage distribution on the line. The equivalence of the HVDC surge simulator (DCTNA) was verified and the effects of various parameters on overvoltage were studied. Voltages over 1 pu (1 pu equals DC rated voltage on the main line) may be generated on the neutral line without a neutral point surge capacitor (C/SUB N/), but the adoption of C/SUB N/ may suppress the voltages below 0.6 pu.
Research Organization:
Mitsubishi Electric Corp., Amagasaki
OSTI ID:
5224016
Journal Information:
IEEE Trans. Power Appar. Syst.; (United States), Journal Name: IEEE Trans. Power Appar. Syst.; (United States) Vol. PAS-101:7; ISSN IEPSA
Country of Publication:
United States
Language:
English

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