AncillaryServices.KirschenChapter5Slides.LTEdits.pdf
AncillaryServices.KirschenChapter5Slides.LTEdits.pdf
AncillaryServices.KirschenChapter5Slides.LTEdits.pdf
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Voltage Control and Reactive Support Services<br />
• Use reactive power resources to maximize active power<br />
that can be transferred through the transmission network<br />
• Some of these reactive power resources are under the<br />
control of the system operator:<br />
• Mechanically-switched capacitors and reactors<br />
• Static VAr compensators<br />
• Transformer taps<br />
• But the best reactive power resources are generators<br />
• Need to define voltage control services to specify the<br />
conditions under which the system operator can obtain<br />
and use reactive power resources<br />
© Daniel Kirschen & Leigh Tesfatsion 2011 36