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Given that the features of different traditional fault location methods and the widespread use of FTU, a hybrid fault location method based on matrix and impedance method for power distribution systems is proposed in this paper. Firstly, the simulated fault current vector is formed by the FTUs' status and network topology. In this vector, the positive elements correspond to the faulted sections. So...
A single-terminal traveling wave fault location method for VSC-HVDC transmission lines based on S-transform is proposed. S-transform is applied to analyze the amplitude variation of the line-mode fault traveling wave signal on each frequency component. The moments corresponding to the modulus maximums of the high frequency components are exactly the traveling wave arrival times. Combining with the...
This paper presents an automatic faulted line section location method for distribution systems. It can be divided into two parts: faulted line section location method for medium-voltage distribution feeders and faulted area identification technique for low-voltage distribution systems. In the first part, an adjacency list that shows the adjacency relationship and status of fault indicating devices...
Along with the rapid development of the power industry, distribution networks get more sophisticated. Traditional fault location methods have obvious drawbacks. In this paper, an accurate and efficient method based on multi- source information from protective equipment and FTUs (Feeder Terminal Unit) as well as voltage sag profiles from monitored node is proposed for fault location in distribution...
This paper presents a new impedance-based fault distance calculation formulation for power distribution systems. The majority of low- or medium- voltage distribution systems are characterized by having numerous branches, laterals and sub-laterals, highly unbalanced operation, and time varying load profile. All of these and other characteristics make most efficient approaches proposed for fault location...
In complex IP networks, faults usually have various uncertain causes. Therefore, it is essential for the fault locating system to realize accurate and quick fault locating. This paper puts forward a new symptom-fault map as the fault locating method for the fault propagation model-a fault locating method based on the Bayesian network, and a fault locating system is designed based on this method. This...
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