Phasor measurement unit based fault location techniques are proposed in this article. Several methods for fault location using synchronized phasor measurements have been listed in the literature review. Some of the listed methods use voltage and current measurements at one end or use two end measurements. Other methods use synchronized voltage measurements only to eliminate the errors of current transformers. This article regenerates the method using only voltage measurements and suggests a new algorithm using both voltage and current measurements with a higher degree of accuracy. To show the superiority of the new proposed algorithm, a comparison between the two algorithms in terms of accuracy and reliability has been conducted. This article also clarifies the validity of the proposed approach for different fault resistances, even the most severe condition of zero-fault resistance is considered. The robustness of the proposed approach is introduced by considering a noise on the tested signal and inaccurate model parameters. The methods have been tested using results of the off-line simulation program (Power Systems Computer Aided Design, Nayak Corporation, Princeton, New Jersey, USA) and the mathematical analysis with the aid of MATLAB (The MathWorks, Natick, Massachusetts, USA). A comparison between the proposed phasor measurement unit based fault location algorithms and one of the other methodologies is also presented.
- Transmission line,
- Phasor measurement unit,
- Fault location
Available at: http://works.bepress.com/almoataz_abdelaziz/15/