TY - GEN
T1 - Analysis and solutions of overcurrent protection issues in a microgrid
AU - Haron, Ahmad Razani
AU - Mohamed, Azah
AU - Shareef, Hussain
AU - Zayandehroodi, Hadi
PY - 2012
Y1 - 2012
N2 - Implementation of microgrid concept creates several issues to the existing protection scheme in the radial distribution network. Contribution of short-circuit current from the main grid and distributed generations result in variations of fault current levels inside the microgrid depending on the location and capacity of the distributed generators. The changes cause detrimental effect of sympathetic tripping, blinding of protection, relay over-reaching, relay under-reaching and loss of selectivity of the overcurrent protection scheme. Such issues must be managed carefully to ensure full benefit from microgrid adaptation. Analysis of the existing overcurrent protection schemes applied in a microgrid with distributed generations reveal the incapability of the system to adapt to the new challenges. Some solutions that could rationalize the protection challenges are also presented in this paper.
AB - Implementation of microgrid concept creates several issues to the existing protection scheme in the radial distribution network. Contribution of short-circuit current from the main grid and distributed generations result in variations of fault current levels inside the microgrid depending on the location and capacity of the distributed generators. The changes cause detrimental effect of sympathetic tripping, blinding of protection, relay over-reaching, relay under-reaching and loss of selectivity of the overcurrent protection scheme. Such issues must be managed carefully to ensure full benefit from microgrid adaptation. Analysis of the existing overcurrent protection schemes applied in a microgrid with distributed generations reveal the incapability of the system to adapt to the new challenges. Some solutions that could rationalize the protection challenges are also presented in this paper.
KW - Coordination
KW - Distributied Generations(DG)
KW - Distribution Network
KW - Microgrid
KW - Overcurrent Relay
KW - Protection Issues
UR - http://www.scopus.com/inward/record.url?scp=84874460341&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84874460341&partnerID=8YFLogxK
U2 - 10.1109/PECon.2012.6450293
DO - 10.1109/PECon.2012.6450293
M3 - Conference contribution
AN - SCOPUS:84874460341
SN - 9781467350198
T3 - PECon 2012 - 2012 IEEE International Conference on Power and Energy
SP - 644
EP - 649
BT - PECon 2012 - 2012 IEEE International Conference on Power and Energy
T2 - 2012 IEEE International Conference on Power and Energy, PECon 2012
Y2 - 2 December 2012 through 5 December 2012
ER -