Teed lines are widely used in rural power networks in China. The paper theoretically analyzes the voltages and currents when a single line-to-ground fault occurs, constructs a new mathematical model for fault location on the teed lines, performs corresponding MATLAB simulations. Simulation results show that currents near the source (bus M) are almost independent of fault positions and fault res...

Occurrence of a multiple-points fault in machine operations could result in exhibiting complex fault signatures, which could result in lowering fault diagnosis accuracy. In this study, a multiple-points defect model (MPDM) is proposed which can simulate fault signature’s dynamics for n-points bearing faults. Furthermore, this study identifies that in case of multiple-points fault in the rotary ...

This paper presents a complete scheme for protection of transmission lines, including fault detection, fault classification as well as fault location. The fault location module utilizes the modeling of transmission lines through their differential equations. The differential equation for the line is solved having its resistence and inductance as parameters. In this approach there is no need for...

This paper describes recent implementations and proposes new developments related to automated fault and disturbance analysis. An advanced expert system for automated analysis of faults and related operations of protective relays using DFR data is described first. Further improvements in the fault location using synchronized sampling are discussed next. Possibility for DFR modifications to allo...

The increased accuracy of the faults’ location is a very actual request of the power grids’ operation and management, reason to develop new and as precise as possible techniques for the estimation of the shortcircuits’ location. The actual fault locating techniques use algorithms based on power frequency quantities or on traveling waves principles, both categories of such fault locators being d...

In this paper a novel pulse sequence testing methodology is presented [22] as an alternative to Time Domain Reflectometry (TDR) for transmission line health condition monitoring, faultfinding and location. This scheme uses Pseudo Random Binary Sequence (PRBS) injection for transmission line testing and fault location with cross correlation (CCR) techniques to build a unique response profile, as...

* Department of Electrical Engineering, Texas A&M University, College Station, Texas 77843-3128 Summary– The use of Global Positioning System (GPS) of satellites has allowed the synchronization of voltage and current measurements from a wide–area power system. Using raw samples of voltage and current from the two ends of a transmission line, algorithms for fault analysis and fault location have...