Differential Equation Based Fault Location Algorithm for Series-compensated Transmission Lines
نویسندگان
چکیده
A new one-end fault location algorithm designated for series-compensated transmission lines is delivered in this paper. It is based on differential equation approach, which allows good reflection of the dynamic phenomena relevant for faults occurring behind the bank of series capacitors (SCs) equipped with metal oxide varistors (MOVs). As a result of that, a good stabilisation of the estimation results (distance to fault, fault path resistance) is assured. This algorithm is recommended for application to the heavy fault cases with high level of noise components in the measured current / voltage signals, which appear as difficult for filtering out with using the earlier known fundamental frequency phasor approach. The algorithm is derived with use of the Clarke transformation for description of the network and the fault. The presented fault location algorithm has been tested and evaluated with use of the ATP-EMTP fault simulation data. The sample results are delivered and discussed.
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