BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/Vancouver BEGIN:DAYLIGHT DTSTART:20190310T030000 TZOFFSETFROM:-0800 TZOFFSETTO:-0700 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:PDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20191103T010000 TZOFFSETFROM:-0700 TZOFFSETTO:-0800 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:PST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20190820T164100Z UID:1BF28EA5-DAE6-4CAD-975C-07E118AE2D17 DTSTART;TZID=America/Vancouver:20190814T115500 DTEND;TZID=America/Vancouver:20190814T130000 DESCRIPTION:IEEE Power & Energy Society Vancouver Chapter is pleased to ann ounce a distinguished lecture on "Sub-synchronous Currents Damage 500 kV S hunt Reactor" by Dr. Mukesh Nagpal. The chapter kindly invites all PES mem bers and guests to attend this presentation. Please also feel free to exte nd this invitation to those who you think would be interested in this pres entation.\n\nThis IEEE technical presentation hours may be considered towa rds Continuing Professional Development (CPD) credits.\n\nLecture Topic: S ub-synchronous Currents Damage 500 kV Shunt Reactor\n\nSpeaker: Dr. Mukesh Nagpal\n\nDate: Wednesday\, August 14th 2019\n\nTime: 11:55 a.m. to 1:00 p.m.\n\nVenue: Centre Room\, Auditorium - BC Hydro Edmonds Office\, 6911 S outhpoint Drive\, Burnaby\, B.C.\n\nWebsite: https://events.vtools.ieee.or g/m/202611\n\nWebEx information cannot be posted here and will be sent by email to our mail list as per updated IEEE rules. Please contact host for more details.\n\nSynposis of the talk:\n\nOn March 31\, 2019\, a 500 kV ai r-core\, shunt reactor at BC Hydro’s Mica generating station was severel y damaged shortly after four unit transformers were simultaneously energiz ed from a 500 kV series and shunt compensated line source. Forensic invest igations revealed that the controlled switching system\, controlling the i nstant at which each breaker phase closes during energization to minimize inrush current\, had failed. Uncontrolled closing led to under-damped\, hi gh-magnitude and sub-synchronous currents\; predominantly about 20 Hz ferr o-resonant currents in transformers and about 9 Hz resonant currents in th e air-core line shunt reactor. Protection tripped and isolated the four tr ansformers\, followed shortly by shunt reactor protection tripping. Before the reactor could be isolated by circuit breakers\, a damaging internal f ault developed. Deep understanding of the sequence-of-events and root caus e of failure were crucial because they enabled safe re-energization of the generating station within in days of the event and in-turn alleviated sys tem reliability and regulatory concerns while the plant was not available. \n\nThis presentation describes the sequence of events\, presents forensic evidence to support conclusions made and shares valuable lessons learned on pitfalls of applying point-on-wave technology in a complex system.\n\nC entre Room\, Auditorium - BC Hydro Edmonds Office\, 6911 Southpoint Drive\ , Burnaby\, British Columbia\, Canada\, V3N4X8 LOCATION:Centre Room\, Auditorium - BC Hydro Edmonds Office\, 6911 Southpoi nt Drive\, Burnaby\, British Columbia\, Canada\, V3N4X8 ORGANIZER:pesvancouver.kenny@gmail.com SEQUENCE:4 SUMMARY:IEEE PES VANCOUVER CHAPTER DISTINGUISHED LECTURER TECHNICAL TALK ON "Sub-synchronous Currents Damage 500 kV Shunt Reactor" URL;VALUE=URI:https://events.vtools.ieee.org/m/202611 X-ALT-DESC:Description: <br /><p>IEEE Power &amp\; Energy Society Vancouver Chapter is pleased to announce a distinguished lecture on "Sub-synchronou s Currents Damage 500 kV Shunt Reactor" by Dr. Mukesh Nagpal. The chapter kindly invites all PES members and guests to attend this presentation. Ple ase also feel free to extend this invitation to those who you think would be interested in this presentation.</p>\n<p><em>This IEEE technical presen tation hours may be considered towards Continuing Professional Development (CPD) credits.</em></p>\n<p><strong>Lecture Topic:</strong>&nbsp\;Sub-syn chronous Currents Damage 500 kV Shunt Reactor</p>\n<p><strong>Speaker:</st rong>&nbsp\;Dr. Mukesh Nagpal</p>\n<p><strong>Date:</strong>&nbsp\;Wednesd ay\, August 14<sup>th</sup>&nbsp\;2019</p>\n<p><strong>Time:</strong>&nbsp \;11:55 a.m. to 1:00 p.m.</p>\n<p><strong>Venue:</strong>&nbsp\;Centre Roo m\, Auditorium - BC Hydro Edmonds Office\, 6911 Southpoint Drive\, Burnaby \, B.C.</p>\n<p><strong>Website:</strong>&nbsp\;<a href="https://events.vt ools.ieee.org/m/202611">https://events.vtools.ieee.org/m/202611</a></p>\n< p>WebEx information cannot be posted here and will be sent by email to our mail list as per updated IEEE rules. Please contact host for more details .</p>\n<p>&nbsp\;</p>\n<p>&nbsp\;</p>\n<p>Synposis of the talk:</p>\n<p>On March 31\, 2019\, a 500 kV air-core\, shunt reactor at BC Hydro&rsquo\;s Mica generating station was severely damaged shortly after four unit trans formers were simultaneously energized from a 500 kV series and shunt compe nsated line source. Forensic investigations revealed that the controlled s witching system\, controlling the instant at which each breaker phase clos es during energization to minimize inrush current\, had failed. Uncontroll ed closing led to under-damped\, high-magnitude and sub-synchronous curren ts\; predominantly about 20 Hz ferro-resonant currents in transformers and about 9 Hz resonant currents in the air-core line shunt reactor. Protecti on tripped and isolated the four transformers\, followed shortly by shunt reactor protection tripping. Before the reactor could be isolated by circu it breakers\, a damaging internal fault developed. Deep understanding of t he sequence-of-events and root cause of failure were crucial because they enabled safe re-energization of the generating station within in days of t he event and in-turn alleviated system reliability and regulatory concerns while the plant was not available.&nbsp\;&nbsp\;&nbsp\;</p>\n<p>&nbsp\;</ p>\n<p>This presentation describes the sequence of events\, presents foren sic evidence to support conclusions made and shares valuable lessons learn ed on pitfalls of applying point-on-wave technology in a complex system.</ p> END:VEVENT END:VCALENDAR