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It is common for power system behavior to be expressed in terms of polar voltage coordinates. When applied in optimization settings, loss formulations in polar voltage coordinates typically assume that voltage magnitudes are fixed. In reality, voltage magnitudes vary and may have an appreciable effect on losses. This paper proposes a systematic approach to incorporating the effects of voltage magnitude...
Type-3 and Type-4 wind turbines are capable of contributing to the reactive power required by wind-farms for supporting grid voltages. However, characterizing the maximum reactive power capability of a wind-farm by summing the individual generator ratings does not account for the effects of voltage variations over the radial collector network and can significantly overestimate the total reactive power...
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