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DTSTAMP:20250501T225309Z
UID:92AEC352-BB57-465F-A170-9B46D12BBA14
DTSTART;TZID=America/Los_Angeles:20250428T155000
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DESCRIPTION:Power system oscillation is a significant stability concern for
  utility companies\, especially with the increased interconnection of inve
 rter-based resources (IBRs). Traditionally\, oscillations are investigated
  using phasor data. This presentation approaches the problem by examining 
 the actual voltage and current waveforms underlying the phasors. It is fou
 nd that oscillations are the appearance of beating waveforms in the phasor
  form. The beating waveforms\, in turn\, are caused by interharmonics (def
 ined per IEC 61000-4-30). Notably\, it can be proven that the presence of 
 interharmonics is both a necessary and sufficient condition for phasor osc
 illations\, and synchronous generator oscillations can be easily explained
  using interharmonics. Multiple field measurement results will be used to 
 substantiate these findings. The interharmonic insights could lead to many
  innovative applications. Two of them will be shared here. The first one i
 s to locate oscillation sources using measurement data. The second one is 
 to determine generator participation factors based on small-signal power s
 ystem dynamic models.\n\nSpeaker(s): Wilsun Xu\n\nAgenda: \n4:00pm - Event
  Starts\n\n4:45pm - Q&amp;A\n\n5:00pm - Adjourn\n\nTimes are in PST.\n\nVirtua
 l: https://events.vtools.ieee.org/m/477906
LOCATION:Virtual: https://events.vtools.ieee.org/m/477906
ORGANIZER:nassif@ieee.org
SEQUENCE:159
SUMMARY:Power System Oscillation &amp; Stability: A Waveform Perspective &amp; Its 
 Practical Applications
URL;VALUE=URI:https://events.vtools.ieee.org/m/477906
X-ALT-DESC:Description: &lt;br /&gt;&lt;p class=&quot;MsoNormal&quot; style=&quot;text-align: justi
 fy\; text-justify: inter-ideograph\;&quot;&gt;&lt;span style=&quot;font-family: &#39;Times New
  Roman&#39;\,serif\;&quot;&gt;Power system oscillation is a significant stability conc
 ern for utility companies\, especially with the increased interconnection 
 of inverter-based resources (IBRs). Traditionally\, oscillations are inves
 tigated using phasor data. This presentation approaches the problem by exa
 mining the actual voltage and current waveforms underlying the phasors. It
  is found that oscillations are the appearance of beating waveforms in the
  phasor form. The beating waveforms\, in turn\, are caused by interharmoni
 cs (defined per IEC&lt;/span&gt; &lt;span style=&quot;font-family: &#39;Times New Roman&#39;\,se
 rif\;&quot;&gt;61000-4-30). Notably\, it can be proven that the presence of interh
 armonics is both a necessary and sufficient condition for phasor oscillati
 ons\, and synchronous generator oscillations can be easily explained using
  interharmonics. Multiple field measurement results will be used to substa
 ntiate these findings. The interharmonic insights could lead to many innov
 ative applications. Two of them will be shared here. The first one is to l
 ocate oscillation sources using measurement data. The second one is to det
 ermine generator participation factors based on small-signal power system 
 dynamic models. &lt;/span&gt;&lt;/p&gt;&lt;br /&gt;&lt;br /&gt;Agenda: &lt;br /&gt;&lt;p&gt;4:00pm - Event Sta
 rts&lt;/p&gt;\n&lt;p&gt;4:45pm - Q&amp;amp\;A&lt;/p&gt;\n&lt;p&gt;5:00pm - Adjourn&lt;/p&gt;\n&lt;p&gt;&amp;nbsp\;&lt;/p&gt;
 \n&lt;p&gt;Times are in PST.&lt;/p&gt;
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