A Theory of Six-Line Transmission System's Fault Phase Selection Base on Wide Area Measurement System

Yan Wang; Song Xiao Xu; De Quan Yang

doi:10.4028/www.scientific.net/AMR.614-615.771

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 614-615A Theory of Six-Line Transmission System's Fault...

A Theory of Six-Line Transmission System's Fault Phase Selection Base on Wide Area Measurement System

Abstract:

The parallel transmission lines on the same tower and six-phase transmission system both have the characteristic of narrow corridor, less occupied fertile soil and large transmission capacity, so they have been widely applied and laid great attention. The WAMS provides a new technical means for the safe and stable operation of six-line transmission system. Based on electrical signals of transmission lines gained from WAMS, this paper uses long line equation to calculate fault current, and analyzes the fault current with six sequence components method. On basis of magnitude and angle characteristic of six sequence components, a theory of fault phase selection for six-line transmission system is proposed. Theoretical analysis and EMTDC simulation tests show that this method is not affected by distributed capacitance and transition resistance, and can correctly select the fault phase at any case of operation mode and fault condition. It can provide effective fault phase selection logic for distance relay protection of six-line transmission system.

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Periodical:

Advanced Materials Research (Volumes 614-615)

Pages:

771-774

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.614-615.771

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Online since:

December 2012

Authors:

Yan Wang, Song Xiao Xu, De Quan Yang

Keywords:

Fault Phase Selection, Long Line Equation, Six Sequence Components, Six-Line Transmission System, Wide-Area Measurement System (WAMS)

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References

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