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Impact of embedded generation on emergency reserve

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3 Author(s)
O'Kane, P.J. ; Dept. of Electr. & Electron. Eng., Queen''s Univ., Belfast, UK ; Fox, B. ; Morrow, D.J.

The growth of embedded generation (EG) capacity in many power supply systems has brought a number of advantages. A potential disadvantage for isolated systems is that generation loss incidents can trigger nuisance tripping of the EG. This undermines the emergency reserve provided to mitigate such a loss. The paper presents an EG loss of mains protection technique, which avoids nuisance tripping during an under-frequency transient. It is also shown that EG can supplement emergency reserve from utility generation. Experimental results and simulations demonstrate how this may be achieved by exploiting the short-term overload capability of diesel generator sets

Published in:

Generation, Transmission and Distribution, IEE Proceedings-  (Volume:146 ,  Issue: 2 )