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:20190404T042203Z UID:8A03DF8B-AB67-44E3-AA6D-BDED943CADD8 DTSTART;TZID=Canada/Mountain:20190403T183000 DTEND;TZID=Canada/Mountain:20190403T203000 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----------------------------------------------------------- ----\n\nAdvance registration only. Registration at the door is not availab le for this presentation.\n\nParticipants must sign-in at the Security Des k in the T2 Building prior to the seminar\, and must sign-out upon leaving .\n---------------------------------------------------------------\n\nPlea se indicate any food allergies or dietary restrictions under "Special Requ ests" when registering.\n------------------------------------------------- --------------\n\nRegistration consists of two parts - vTools and PayPal. Follow the "Register Now" link below\, and complete the information. The s ystem will then take you to a PayPal page to enter your payment informatio n. When you have successfully registered and paid\, you will receive 2 con firmation emails\, 1 from IEEE and 1 from PayPal. Your registration is not complete until your payment has been received\, and you have received bot h confirmation emails.\n\nCo-sponsored by: TransAlta\n\nSpeaker(s): Jenny Z. Zhou\, Ph.D.\, P.Eng.\, \n\nAgenda: \n- 5:45pm: Doors open\n- 5:45-6:20 pm: Networking and a Light Meal\n- 6:20-6:30pm: Introduction\n- 6:30-8:30p m: Presentation\n\nRoom: T1-Auditorium\, Bldg: TransAlta "T1" building\, 1 10 - 12th Avenue SW\, Calgary\, Alberta\, Canada LOCATION:Room: T1-Auditorium\, Bldg: TransAlta "T1" building\, 110 - 12th A venue SW\, Calgary\, Alberta\, Canada ORGANIZER:shan.pandher@ieee.org SEQUENCE:4 SUMMARY:Sub-synchronous Interaction and Harmonic Control Instability associ ated with HVDC and Wind Plant Installations URL;VALUE=URI:https://events.vtools.ieee.org/m/193040 X-ALT-DESC:Description: <br /><p class="x_MsoNormal">Sub-synchronous intera ctions (SSI) are a family of physical interactions that involve exchange o f energy between a generator and a transmission system at ac frequencies b elow the system nominal frequency. They include sub-synchronous resonance (SSR)\, sub-synchronous 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 e nergy exchange between the generator and a series-compensated transmission system\, either through sustained or poorly damped oscillations\, or tran sient 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 generator. The power electronic controller can exhibit ne gative damping at sub-synchronous frequencies\, which can cause un-damped or growing oscillations in the known mechanical torsional modes of oscilla tion in the generator shaft system. SSCI phenomenon is a control interacti on that can occur between any power electronic devices\, such as wind turb ine\, and a series-compensated system. The oscillations resulting from SSC I may grow very quickly. Another SSCI phenomenon is the interaction betwee n power electronic controllers such as grid-connected inverters for renewa ble energy sources integration. Such resonances can be both sub-synchronou s and super-synchronous and may lead to inverter control instability and o ther dynamic problems when the connected grid is becoming weak.<br /><br / >The objective of this Seminar is to provide an introduction to SSI phenom ena including SSR\, SSTI and SSCI. To give a guide on how to identify pote ntiality where SSTI and/or SSCI may be an issue\; how to study the phenome na\; how to control\, mitigate\, and/or protect against any adverse effect s associated with these interactions\; and potential types of system chang es or additions that would require equipment owners and/or operators to re -examine their system for the possibility of SSTI and/or SSCI.</p>\n<hr /> \n<p><strong>Advance registration only. Registration at the door is not av ailable for this presentation.</strong></p>\n<p><strong>Participants must sign-in at the Security Desk in the T2 Building prior to the seminar\, and must sign-out upon leaving.</strong></p>\n<hr />\n<p><em>Please indicate any food allergies or dietary restrictions under "Special Requests" when r egistering.</em></p>\n<hr />\n<p><em>Registration consists of two parts - vTools and PayPal. Follow the "Register Now" link below\, and complete the information. The system will then take you to a PayPal page to enter your payment information. When you have successfully registered and paid\, you will receive 2 confirmation emails\, 1 from IEEE and 1 from PayPal. <stro ng>Your registration is not complete until your payment has been received\ , and you have received both confirmation emails.</strong></em></p><br />< br />Agenda: <br /><ul>\n<li>5:45pm: Doors open</li>\n<li>5:45-6:20pm: Net working and a Light Meal</li>\n<li>6:20-6:30pm: Introduction</li>\n<li>6:3 0-8:30pm: Presentation</li>\n</ul> END:VEVENT END:VCALENDAR