TY - GEN
T1 - Digital multi-relay protection for micro-grid systems
AU - Saleh, S. A.
AU - Ahshan, R.
PY - 2012
Y1 - 2012
N2 - This paper presents the development, implementation and performances of a digital multi-relay protection for micro-grids. The developed digital protection is based on extracting the second level high frequency sub-bands present in d-q-axis components of the currents flowing through each bus of a micro-grid. The desired frequency sub-bands are extracted using the wavelet packet transform (WPT), and are considered signatures for identifying fault currents and fault locations. The protective functions in the developed digital multi-relay protection are structured without adaptive features or relay-to-relay communications. This structure is established to accomplish fast response, simple implementation, independent functions, and minor sensitivity to levels of fault currents. The digital multi-relay protection is implemented for experimental testing on a laboratory micro-grid for various operating conditions. Experimental performances demonstrate high reliability, accuracy, and speed, along with negligible sensitivity to parameters of protected components and mode of operating the micro-grid.
AB - This paper presents the development, implementation and performances of a digital multi-relay protection for micro-grids. The developed digital protection is based on extracting the second level high frequency sub-bands present in d-q-axis components of the currents flowing through each bus of a micro-grid. The desired frequency sub-bands are extracted using the wavelet packet transform (WPT), and are considered signatures for identifying fault currents and fault locations. The protective functions in the developed digital multi-relay protection are structured without adaptive features or relay-to-relay communications. This structure is established to accomplish fast response, simple implementation, independent functions, and minor sensitivity to levels of fault currents. The digital multi-relay protection is implemented for experimental testing on a laboratory micro-grid for various operating conditions. Experimental performances demonstrate high reliability, accuracy, and speed, along with negligible sensitivity to parameters of protected components and mode of operating the micro-grid.
KW - Digital protective relays
KW - micro-grids
KW - power system protection
KW - real-time systems
KW - wavelet transforms
UR - http://www.scopus.com/inward/record.url?scp=84871669481&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84871669481&partnerID=8YFLogxK
U2 - 10.1109/IAS.2012.6374120
DO - 10.1109/IAS.2012.6374120
M3 - Conference contribution
AN - SCOPUS:84871669481
SN - 9781467303309
T3 - Conference Record - IAS Annual Meeting (IEEE Industry Applications Society)
BT - 2012 IEEE Industry Applications Society Annual Meeting, IAS 2012
T2 - 2012 IEEE Industry Applications Society Annual Meeting, IAS 2012
Y2 - 7 October 2012 through 11 October 2012
ER -