AncillaryServices.KirschenChapter5Slides.LTEdits.pdf
AncillaryServices.KirschenChapter5Slides.LTEdits.pdf
AncillaryServices.KirschenChapter5Slides.LTEdits.pdf
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Types of Preventive Actions<br />
• Low-cost preventive actions:<br />
• Examples<br />
• Adjust taps of transformers<br />
• Adjust reference voltage of generators<br />
• Adjust phase shifters<br />
• Effective but limited<br />
• High-cost preventive actions:<br />
• Restrict active power flow on some transmission network<br />
branches<br />
• Requires limiting the power output of some generators<br />
• Affects the ability of these generators to trade on the market<br />
and make money<br />
© Daniel Kirschen & Leigh Tesfatsion 30