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A new method for islanding detection of utility-connected wind power generation systems

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4 Author(s)
Yang, H.-T. ; Chung Yuan Christian Univ., Chungli ; Peng, P.C. ; Chang, J.C. ; Wang, C.Y.

The existing islanding detection techniques are generally classified into passive and active categories. Nevertheless, it has been demonstrated that "non-detection zones" (NDZ) still exist for some specific load impedances. A new algorithm using differential voltage correlation (DVC) method is hence proposed in this paper to alleviate this problem. To verify the proposed approach for islanding detection of a dispersed wind power generation system (DWPGS), it has been evaluated using different scenarios. Impacts of various loads, wind-speed abrupt changes, and power-quality (PQ) disturbances on the detection performance are also examined under conditions of both loss of grid-interconnection and parallel operations. From the test results, the effectiveness of the approach to reduce non- detection zone and improve the detection accuracy has been demonstrated.

Published in:

Power Tech, 2005 IEEE Russia

Date of Conference:

27-30 June 2005

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