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Fault indicator

About: Fault indicator is a research topic. Over the lifetime, 10057 publications have been published within this topic receiving 143482 citations. The topic is also known as: FCI & power line fault indicator.


Papers
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Journal ArticleDOI
TL;DR: In this paper, the authors proposed a fault location method for power distribution system (PDS) in which the measured and recorded samples of voltages at the beginning of feeder for actual fault are compared with the stored samples from simulating of fault at the possible fault points.
Abstract: In this study, a practical method is proposed for determining the distance and the section of fault in power distribution system (PDS). In the suggested method, at first the possible fault points are determined using a novel impedance-based fault location method. Since the number of these points may be more than one, thus two methods are proposed for determining the real location of fault. In the first method, the measured and recorded samples of voltages at the beginning of feeder for actual fault are compared with the stored samples of voltages which are obtained from simulating of fault at the possible fault points. The one with highest matching is the real location of fault. In the second method, frequency spectrum (FS) of voltage is defined as a suitable criterion for this purpose. Therefore the real fault point is determined by comparing and matching the FS of voltages obtained from the simulated faults and the recorded voltage for actual fault. The performance of the proposed method is evaluated in a real feeder in distribution network of Iran considering different types of faults, fault resistances, fault inception angles, real instrument transformer models and X/R ratio changes of upstream PDS network. The obtained results show that the performance of the proposed method is quite satisfactory and its accuracy is very high.

66 citations

Proceedings Article
01 Dec 2007
TL;DR: In this paper, the authors described the application of an artificial neural network (ANN) based algorithm with modular structure to the fault classification and location of a single-circuit high voltage transmission line.
Abstract: This paper describes the application of an artificial neural network (ANN) based algorithm with modular structure to the fault classification and location of a single-circuit high voltage transmission line Different fault types containing single-phase to ground, two-phase, two-phase to ground and three-phase are considered The variation of fault resistance is considered, too The operation of proposed strategy is not dependent on fault inception angle (FIA) A new classification method is proposed for decreasing of training time and dimensions of ANN Using the proposed method, high accuracy of fault classification is achieved Fundamental component of pre-fault and post-fault positive sequence component of currents and voltages of three phases have been used as inputs to proposed ANN The output of the ANN is the estimated fault location A two machine power system model is simulated by PSCAD/EMTDC to obtain the mentioned voltages and currents values The neural network toolbox of MATLAB is used for training and testing of ANN

66 citations

Journal ArticleDOI
TL;DR: In this paper, a new numerical algorithm for arcing faults detection and fault distance estimation is presented in the time domain, which is based on the line terminal voltages and currents processing.
Abstract: In this paper a new numerical algorithm for arcing faults detection and fault distance estimation is presented. The solution is given in the time domain. It is based on the line terminal voltages and currents processing. A simple new mathematical model of arc voltage is introduced in the estimation. Thereby, the more accurate approach to fault location is derived, particularly for the close-in faults. The new algorithm can be utilized for blocking the automatic reclosing. The unknown model parameters, including the line resistance and inductance, fault resistance and arc voltage amplitude, are estimated by using the least error squares method. The new algorithm is successfully tested through computer simulation and laboratory tests.

66 citations

Journal ArticleDOI
TL;DR: In this article, a new short-circuit current calculation method for IIDGs is developed according to the current control and reactive power support during the lowvoltage ride-through operation period.
Abstract: The fault current of a three-phase inverter-interfaced distributed generator (IIDG) depends on the control strategy employed during grid faults. A new short-circuit current calculation method for IIDGs is developed in this study according to the current control and reactive power support during the low-voltage ride-through operation period. To investigate how the ride-through time relates to the short-circuit current of IIDGs, short-circuit responses under different fault conditions are compared. The short-circuit current of a multi-IIDG distribution network is determined with the proposed technique to consider ride-through time and sequence current control. The correctness of the proposed method is verified by simulation.

66 citations

Journal ArticleDOI
TL;DR: In this paper, a combined fault location scheme for three-terminal transmission lines using wavelet transforms (WTs) is presented. But the proposed scheme is based on the low and high-frequency components of the transient signals originated from fault situations registered in the terminals of a system.
Abstract: This work presents the study and development of a combined fault location scheme for three-terminal transmission lines using wavelet transforms (WTs). The methodology is based on the low- and high-frequency components of the transient signals originated from fault situations registered in the terminals of a system. By processing these signals and using the WT, it is possible to determine the time of travelling waves of voltages and/or currents from the fault point to the terminals, as well as estimate the fundamental frequency components. A new approach presents a reliable and accurate fault location scheme combining some different solutions. The main idea is to have a decision routine in order to select which method should be used in each situation presented to the algorithm. The combined algorithm was tested for different fault conditions by simulations using the ATP (Alternative Transients Program) software. The results obtained are promising and demonstrate a highly satisfactory degree of accuracy and reliability of the proposed method.

66 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202381
2022215
202127
202061
2019116
2018160