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Fault location on multiterminal transmission lines using only two terminals data

A new multiterminal continuously transposed transmission lines fault location method is presented in this paper, which it is based on steady-state pre-fault and post-fault voltage and current measured phasors at local and remote terminals to determine the fault information, which are: the section occurrence, the distance, or the occurrence point, and resistance. The main characteristic of this new method is the process of networkscanning, where the fault is located within each line section, trying to minimize by means of an objective function, the differences between the voltages and currents measured and calculated in local and remote terminals. The the error calculated by the goal function, in case of the fault to be in a certain section, is compared with the error obtained for the previous section, so the section with the largest error is dismissed. At the end of the scanning process, the method of fault location presents the section of fault occurrence, distance and resistance. The results obtained from the simulations show the efficiency and accuracy of the proposed method for the fault distance, resistance and type variation.

Fault location; Power systems; Optimization


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