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A new fault location algorithm for series compensated lines using synchronized phasor measurements

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3 Author(s)
Chi-Shan Yu ; Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan ; Chih-Wen Liu ; Joe-Air Jiang

In this paper, a novel fault location algorithm based on phasor measurement units (PMUs) for series compensated lines has been proposed. Traditionally, the voltage drop of series device has always been predicted by the device model in the fault locator of series compensated lines. But some of the errors are induced from the inaccuracy of the series device model or from the uncertainty of the protection function of series device. The proposed algorithm does not need the series device model and information of the protection function of series device to predict the voltage drop. Instead, two iteration steps, pre-location step and correction step, are used in the proposed algorithm to calculate the voltage drop and fault location. Thus. The more accurate fault location for series compensated lines can be achieved. The proposed technique can be easily applied to any series FACTS system. The accuracy of the fault location algorithm is tested by the EMTP generated data with respect to a 300 km 345 kV transmission line under different fault locations. Fault resistances and fault inception angles. The results show the high accuracy up to 99.5%

Published in:

Power Engineering Society Summer Meeting, 2000. IEEE  (Volume:3 )

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