A fault location technique for rural distribution feeders

The fault location scheme presented attempts to account for the multi-phase laterals, the unbalanced conditions, and the unsymmetrical nature of distribution feeders by continually updating voltage and current vectors at set locations within the system. The updated voltage and current vectors are the estimates of the 60 Hz phasor quantities obtained using a recursive optimal estimation algorithm. The distance to the fault is then estimated using a method based on the apparent impedance approach and the updated voltage and current vectors. Another consideration is the ability to determine the fault location on a lateral. A simulation of an actual rural distribution feeder using the electromagnetic transients program (EMTP) is used to illustrate the concepts of the approach and to show the accuracy and speed of this fault location technique, even on a temporary fault that lasts only for a few cycles.<<ETX>>

[1]  J. Bunch,et al.  The Distribution System of the Year 2000 , 1982, IEEE Transactions on Power Apparatus and Systems.

[2]  H. Chestnut,et al.  Evaluation of a Conceptual Distribution Automation System , 1982, IEEE Transactions on Power Apparatus and Systems.

[3]  K. Srinivasan,et al.  A New Fault Location Algorithm for Radial Transmission Lines with Loads , 1989, IEEE Power Engineering Review.

[4]  Murari Mohan Saha,et al.  An Accurate Fault Locator with Compensation for Apparent Reactance in the Fault Resistance Resulting from Remote-End Infeed , 1985, IEEE Power Engineering Review.

[5]  M. S. Sachdev,et al.  A technique for estimating transmission line fault locations from digital impedance relay measurements , 1988 .

[6]  Adly A. Girgis.  A New Kalman Filtering Based Digital Distance Relay , 1982 .

[7]  T. Takagi,et al.  Development of a New Type Fault Locator Using the One-Terminal Voltage and Current Data , 1982, IEEE Power Engineering Review.

[8]  P. Lyons,et al.  Microprocessor-Based Control of Distribution Systems , 1981, IEEE Transactions on Power Apparatus and Systems.

[9]  R. E. Owen,et al.  Study of distribution system surge and harmonic characteristics. Final report , 1980 .

[10]  Jennings Bunch,et al.  Generalized Algorithms for Distribution Feeder Deployment and Sectionalizing , 1980, IEEE Transactions on Power Apparatus and Systems.

[11]  L. McCall.  A Distribution Automation Demonstration Project , 1981, IEEE Transactions on Power Apparatus and Systems.

[12]  Adly A. Girgis,et al.  Application of adaptive Kalman filtering in fault classification, distance protection, and fault location using microprocessors , 1988 .