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This paper presents an analysis of possibility of detection of a fault position with respect to the compensating bank in a series compensating transmission line. The algorithm designed for this purpose is based on determining the contents of dc components in the distance relay input currents. Fuzzy logic technique is applied for making the decision whether a fault is in front of the compensating bank...
This paper presents an adaptive method for non-pilot distance protection of a power transmission line. It exhibits improved operation under resistive faults, i.e. reducing an under reaching and overreaching of the relay, that is caused by a remote line end infeed. Use of one-end measurements and also two-end synchronized measurements are considered. The developed adaptive distance protection algorithms...
This paper presents an accurate fault location algorithm utilising synchronised measurements of two-end currents and one-end voltage in a transmission line. It has been assumed that the algorithm is incorporated into the current differential relay. Therefore, no additional cost for com-munication between the line ends is demanded. High accuracy of fault location is assured by strict considering of...
This paper deals with the post-fault analysis of operation of distance protective relays from the line terminals. The signals of the digital distance relays are processed in the off-line regime with the aim of evaluating the particular relay operation case. First, the program enables the emulation of the fault loop impedance measurements of the distance relays. Second, the two-end unsynchronized measurements...
This paper deals with the post-fault analysis of operation of distance protective relays from the line terminals. The signals of the digital distance relays are processed in the offline regime with the aim of evaluating the particular relay operation case. Firstly, the program enables to imitate the fault loop impedance measurements of the distance relays. Secondly, the two-end unsynchronized measurements...
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