Power oscillation damper design — Blackwall SVC

摘要

The paper summaries the results of the Blackwall POD design studies, carried out in both the frequency and time domains. The Blackwall POD design studies show that in the small signal stability domain the performance of the new POD exceeds that of the existing POD in all cases studied. The average improvement of damping of the QNI mode across all considered cases is 18.68 %. In the large signal stability domain the new Blackwall POD also showed improvement in the analysed cases. There is a slightly improved ability of the POD to damp frequency and active power transfer across the QNI after critical system contingencies. The Blackwall POD may also marginally improve the southerly transient stability limit of QNI under some system conditions. However, based on statistics of the cases analysed, it could also be concluded that the impact of the new POD on QNI limits is not material.