BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:Canada/Mountain BEGIN:DAYLIGHT DTSTART:20190310T030000 TZOFFSETFROM:-0700 TZOFFSETTO:-0600 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:MDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20191103T010000 TZOFFSETFROM:-0600 TZOFFSETTO:-0700 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:MST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20190408T233445Z UID:8AEA7B03-2CA7-4491-9043-3CD03568FB04 DTSTART;TZID=Canada/Mountain:20190404T180000 DTEND;TZID=Canada/Mountain:20190404T203000 DESCRIPTION:Sub-synchronous interactions (SSI) are a family of physical int eractions that involve exchange of energy between a generator and a transm ission system at ac frequencies below the system nominal frequency. They i nclude sub-synchronous resonance (SSR)\, sub-synchronous torsional interac tion (SSTI)\, and sub-synchronous control instability (SSCI). SSR is a phe nomenon that can cause increased fatigue or critical failure of generator turbine shaft systems due to an energy exchange between the generator and a series-compensated transmission system\, either through sustained or poo rly damped oscillations\, or transient effects. SSTI occur when an interac tion happens between an HVDC link\, FACTS device\, or other power electron ic controller and the mechanical mass system of a generator. The power ele ctronic controller can exhibit negative damping at sub-synchronous frequen cies\, which can cause un-damped or growing oscillations in the known mech anical torsional modes of oscillation in the generator shaft system. SSCI phenomenon is a control interaction that can occur between any power elect ronic devices\, such as wind turbine\, and a series-compensated system. Th e oscillations resulting from SSCI may grow very quickly. Another SSCI phe nomenon is the interaction between power electronic controllers such as gr id-connected inverters for renewable energy sources integration. Such reso nances can be both sub-synchronous and super-synchronous and may lead to i nverter control instability and other dynamic problems when the connected grid is becoming weak.\n\nThe objective of this Seminar is to provide an i ntroduction to SSI phenomena including SSR\, SSTI and SSCI. To give a guid e on how to identify potentiality where SSTI and/or SSCI may be an issue\; how to study the phenomena\; how to control\, mitigate\, and/or protect a gainst any adverse effects associated with these interactions\; and potent ial types of system changes or additions that would require equipment owne rs and/or operators to re-examine their system for the possibility of SSTI and/or SSCI.\n\nCo-sponsored by: Northern Canada Section Power Electronic s Chapter\n\nSpeaker(s): Dr. Jenny Z. Zhou\, \n\nAgenda: \n5.45pm: Doors o pen\n\n5:45-6:00pm: Networking and a Light Meal\n\n6:00-6:10pm: Introducti on\n\n6:10-8:10pm: Presentation\n\nRoom: E1-003\, Bldg: ETLC\, University of Alberta\, 9107 116 Street\, Edmonton\, Alberta\, Canada\, T6G 2V6 LOCATION:Room: E1-003\, Bldg: ETLC\, University of Alberta\, 9107 116 Stree t\, Edmonton\, Alberta\, Canada\, T6G 2V6 ORGANIZER:nassif@gmail.com SEQUENCE:5 SUMMARY:Edmonton IAS/PES Chapter Event "Sub-synchronous Interaction and Har monic Control Instability associated with HVDC and Wind Plant Installation s" URL;VALUE=URI:https://events.vtools.ieee.org/m/193290 X-ALT-DESC:Description: <br /><p>Sub-synchronous interactions (SSI) are a f amily of physical interactions that involve exchange of energy between a g enerator and a transmission system at ac frequencies below the system nomi nal frequency. They include sub-synchronous resonance (SSR)\, sub-synchron ous torsional interaction (SSTI)\, and sub-synchronous control instability (SSCI). SSR is a phenomenon that can cause increased fatigue or critical failure of generator turbine shaft systems due to an energy exchange betwe en the generator and a series-compensated transmission system\, either thr ough sustained or poorly damped oscillations\, or transient effects. SSTI occur when an interaction happens between an HVDC link\, FACTS device\, or other power electronic controller and the mechanical mass system of a gen erator. The power electronic controller can exhibit negative damping at su b-synchronous frequencies\, which can cause un-damped or growing oscillati ons in the known mechanical torsional modes of oscillation in the generato r shaft system. SSCI phenomenon is a control interaction that can occur be tween any power electronic devices\, such as wind turbine\, and a series-c ompensated system. The oscillations resulting from SSCI may grow very quic kly. Another SSCI phenomenon is the interaction between power electronic c ontrollers such as grid-connected inverters for renewable energy sources i ntegration. Such resonances can be both sub-synchronous and super-synchron ous and may lead to inverter control instability and other dynamic problem s when the connected grid is becoming weak.<br /> <br /> The objective of this Seminar is to provide an introduction to SSI phenomena including SSR\ , SSTI and SSCI. To give a guide on how to identify potentiality where SST I and/or SSCI may be an issue\; how to study the phenomena\; how to contro l\, mitigate\, and/or protect against any adverse effects associated with these interactions\; and potential types of system changes or additions th at would require equipment owners and/or operators to re-examine their sys tem for the possibility of SSTI and/or SSCI.</p><br /><br />Agenda: <br /> <p>5.45pm:&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;& nbsp\;&nbsp\; Doors open</p>\n<p>5:45-6:00pm:&nbsp\;&nbsp\;&nbsp\;&nbsp\; Networking and a Light Meal</p>\n<p>6:00-6:10pm:&nbsp\;&nbsp\;&nbsp\;&nbsp \; Introduction&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nb sp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\; &nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbs p\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;& nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp \;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&n bsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;&nbsp\;</p>\n<p>6:10 -8:10pm:&nbsp\;&nbsp\;&nbsp\;&nbsp\; Presentation</p> END:VEVENT END:VCALENDAR