Optimal allocation of fault current limiters for sustaining overcurrent relays coordination in a power system with distributed generation

Abstract This paper addresses the problem of overcurrent relays (OCRs) coordination in the presence of DGs. OCRs are optimally set to work in a coordinated manner to isolate faults with minimal impacts on customers. The penetration of DGs into the power system changes the fault current levels seen by the OCRs. This can deteriorate the coordinated operation of OCRs. Operation time difference between backup and main relays can be below the standard limit or even the backup OCR can incorrectly work before the main OCR. Though resetting of OCRs is tedious especially in large systems, it cannot alone restore the original coordinated operation in the presence of DGs. The paper investigates the optimal utilization of fault current limiters (FCLs) to maintain the directional OCRs coordinated operation without any need to OCRs resetting irrespective of DGs status. It is required to maintain the OCRs coordination at minimum cost of prospective FCLs. Hence, the FCLs location and sizing problem is formulated as a constrained multi-objective optimization problem. Multi-objective particle swarm optimization is adopted for solving the optimization problem to determine the optimal locations and sizes of FCLs. The proposed algorithm is applied to meshed and radial power systems at different DGs arrangements using different types of FCLs. Moreover, the OCRs coordination problem is studied when the system includes both directional and non-directional OCRs. Comparative analysis of results is provided.

[1]  Joong-Rin Shin,et al.  A particle swarm optimization for economic dispatch with nonsmooth cost functions , 2005, IEEE Transactions on Power Systems.

[2]  W. Z. Black,et al.  Refinements to the Neher-McGrath model for calculating the ampacity of underground cables , 1996 .

[3]  Mohammad Ali Abido,et al.  Two-level of nondominated solutions approach to multiobjective particle swarm optimization , 2007, GECCO '07.

[4]  P. A. Kotos,et al.  IEEE standard inverse-time characteristic equations for overcurrent relays , 1999 .

[5]  K. K. Li,et al.  Application of genetic algorithm to overcurrent relay grading coordination , 1997 .

[6]  M.-R. Haghifam,et al.  Protection of distribution networks in presence of DG using Distribution Automation System capabilities , 2008, 2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century.

[7]  J. Postforoosh,et al.  Computer Aided Transmission Protection System Design Part I: Alcorithms , 1984, IEEE Transactions on Power Apparatus and Systems.

[8]  H. R. Mashhadi,et al.  Optimal Coordination of Directional Overcurrent Relays Considering Different Network Topologies Using Interval Linear Programming , 2010, IEEE Transactions on Power Delivery.

[9]  T.S. Sidhu,et al.  Restoration of Directional Overcurrent Relay Coordination in Distributed Generation Systems Utilizing Fault Current Limiter , 2008, IEEE Transactions on Power Delivery.

[10]  David Kendrick,et al.  GAMS, a user's guide , 1988, SGNM.

[11]  Dharmendra Kumar Singh,et al.  Protection Of Power System By Optimal Co-ordination of Directional Overcurrent Relays Using Genetic Algorithm , 2012 .

[12]  Azah Mohamed,et al.  A review on protection schemes and coordination techniques in microgrid system , 2012 .

[13]  Mustafa Bagriyanik,et al.  The Effect of Fault Current Limiters on Distribution Systems with Wind Turbine Generators , 2013 .

[14]  Joydeep Mitra,et al.  Microgrid Protection Using Communication-Assisted Digital Relays , 2010, IEEE Transactions on Power Delivery.

[15]  H. H. Zeineldin,et al.  Optimal fault current limiter sizing for distribution systems with DG , 2011, 2011 IEEE Power and Energy Society General Meeting.

[16]  A. J. Urdaneta,et al.  Coordination of directional overcurrent relay timing using linear programming , 1996 .

[17]  M Reyes Sierra,et al.  Multi-Objective Particle Swarm Optimizers: A Survey of the State-of-the-Art , 2006 .

[18]  A. Yazdian,et al.  Fault current limiter allocation and sizing in distribution system in presence of distributed generation , 2009, 2009 IEEE Power & Energy Society General Meeting.

[19]  J. Sadeh,et al.  Applying superconductive fault current limiter to minimize the impacts of Distributed Generation on the distribution protection systems , 2012, 2012 11th International Conference on Environment and Electrical Engineering.

[20]  G Tang,et al.  APPLICATION OF A FAULT CURRENT LIMITER TO MINIMIZE DISTRIBUTED GENERATION IMPACT ON COORDINATED RELAY PROTECTION , 2005 .

[21]  D. Nagesh Kumar,et al.  Multi‐objective particle swarm optimization for generating optimal trade‐offs in reservoir operation , 2007 .

[22]  Lin Ye,et al.  System Studies of the Superconducting Fault Current Limiter in Electrical Distribution Grids , 2007, IEEE Transactions on Applied Superconductivity.

[23]  A. Y. Abdelaziz,et al.  An adaptive protection scheme for optimal coordination of overcurrent relays , 2002 .

[24]  Abyaneh, H. Askarian,et al.  A New Optimal Approach for Coordination of Overcurrent Relays in Interconnected Power Systems , 2002, IEEE Power Engineering Review.

[25]  J. Jager,et al.  High-Impedance Protection Applications for Tripping Acceleration in Networks with DG , 2005, 2005 IEEE/PES Transmission & Distribution Conference & Exposition: Asia and Pacific.

[26]  Bala Venkatesh,et al.  Optimal reconfiguration of radial distribution systems to maximize loadability , 2004 .

[27]  Azah Mohamed,et al.  A novel neural network and backtracking based protection coordination scheme for distribution system with distributed generation , 2012 .