A New Fault-Positions Method Based on Interpolation for the Area of Vulnerability to Voltage Sags

Shuang Ya Zhou; Shun Tao; Xiang Ning Xiao; Chao Luo; Xiao Chen Zhen

doi:10.4028/www.scientific.net/AMM.325-326.681

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 325-326A New Fault-Positions Method Based on...

A New Fault-Positions Method Based on Interpolation for the Area of Vulnerability to Voltage Sags

Abstract:

The area of vulnerability (AOV) of point of common coupling (PCC) can directly reflect the issue of voltage sag caused by faults in power system. In order to calculate the area of vulnerability more accurately and faster, this paper proposes a new fault positions method based on interpolation, which overcomes the blindness of setting fault points. The influence of transformer winding connections on voltage sag is also taken into account. Short-circuit calculation is adopted and transfer matrix representing the transfer law of transformer on voltage sag is deduced firstly. Then, the principle and implementation flow of the new method are presented in detail. Finally, the new method is applied to a regional power system of China, and graphic result of the area of vulnerability is displayed under balanced and unbalanced faults.

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Periodical:

Applied Mechanics and Materials (Volumes 325-326)

Pages:

681-686

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.325-326.681

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Online since:

June 2013

Authors:

Shuang Ya Zhou, Shun Tao, Xiang Ning Xiao, Chao Luo, Xiao Chen Zhen

Keywords:

Area of Vulnerability (AOV), Fault Positions Method, Interpolation, Voltage Sag

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