Fault Location in Unbalanced DG Systems using the Positive Sequence Apparent Impedance
- 1 January 2006
- conference paper
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE) in 2006 IEEE/PES Transmission & Distribution Conference and Exposition: Latin America
Abstract
The fault location techniques for power distribution systems (PDS) in use nowadays assume that the system has a radial power flow. Since new technologies in development, such as the distributed generation (DG), change this characteristic, it is necessary to adjust the already existing methods for fault location, since they show to be inefficient. Moreover, the unbalance between phases due to different loading at laterals is another issue that interferes in the fault location methodologies. In this paper, it is presented a new fault location method based on positive sequence apparent impedance. Computational simulations were made and the method was tested in two systems and compared with other existing fault location techniques in order to validate it. The basic characteristics of the method, the new algorithm and a variety of case studies are presented in the paper in order to illustrate its efficiency in unbalanced distribution systems with DGKeywords
This publication has 8 references indexed in Scilit:
- Coordination of Voltage Sag and Overcurrent Protection in DG SystemsIEEE Transactions on Power Delivery, 2005
- An Intelligent and Efficient Fault Location and Diagnosis Scheme for Radial Distribution SystemsIEEE Transactions on Power Delivery, 2004
- Effect of distributed generation on protective device coordination in distribution systemPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Adaptive power flow method for distribution systems with dispersed generationIEEE Transactions on Power Delivery, 2002
- Distributed generation: a definitionElectric Power Systems Research, 2001
- Distributed generation siting and sizing under uncertaintyPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2001
- Optimization of distribution system design to accommodate cold load pickupIEEE Transactions on Power Delivery, 1997
- Development of a New Type Fault Locator Using the One-Terminal Voltage and Current DataIEEE Transactions on Power Apparatus and Systems, 1982