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This paper presents a new fault location method for three-terminal composite network consisting of two overhead line sections and a cable. Synchronized measurements of three-phase current from all three ends and three-phase voltage - from the bus, where the fault locator (FL) is installed, are utilized for fault location. The fault location algorithm consists of three subroutines designated for locating...
This paper presents a new fault location algorithm for three-terminal line, which utilises unsynchronised measurements of three phase currents and voltages from three line terminals. The algorithm consists of three subroutines designated for locating faults on particular line sections. The valid subroutine is indicated with use of a selection procedure. The distributed parameter line model is strictly...
An accurate fault location algorithm for double-circuit series compensated lines is presented. Use of two-end unsynchronized measurements of current and voltage signals is considered. The algorithm applies two subroutines, designated for locating faults on particular line sections, and additionally the procedure for selecting the valid subroutine. The subroutines are formulated with use of the generalized...
The paper presents an adaptive procedure for digital distance protection device that allows to compensate for the negative influence of the reactance effect, caused by fault resistance and pre-fault power flow. The procedure utilizes locally measured phase currents and voltages and has been designed to operate with double-circuit power lines. The algorithm calculates on-line shift vector components...
This paper presents a new method for locating faults on three-terminal power lines. Estimation of a distance to fault and indication of a faulted section is performed using three-phase current from all three terminals and additionally three-phase voltage from the terminal at which a fault locator is installed. Such a set of synchronized measurements has been taken into consideration with the aim of...
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