IEEE-Madison Meeting Reminder
December YP/ECN: Hi-Tech Toys
IEEE-Madison Joint Young Professional/ Entrepreneur and Consultants Network
Date: Thursday, December 5th, 6:00 PM to 8:00 PM
Secto67, 56 Cory Street, Madison
Event Info
Past Meeting Reviews
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Please Register for this meeting!!
IEEE-Madison Joint Young Professional/ Entrepreneur and Consultants Network
"Hi-Tech Toys"
- Thursday, December 5th, 6:00 PM to 8:00 PM
- Networking/Social and FUN!
- Location:
Sector67
56 Cory Street, Madison WI 53704 - Please Register at the IEEE-Madison event page.
Talk: The Holiday Season is just around the corner. What Hi-Tech consumer items have impressed you? Bring your favorite one and be prepared to discuss it's technical merits. Also, be prepared to give give a brief introduction to what you do ("Elevator Speech"). This is your opportunity to discuss your company, or your consulting expertise while having fun. .
Review of Past Meetings
- November PES/IAS Meeting: (Review by Mike Stemper)
It's almost an axiom in grid control that the more rotating mass the
system has, the more solid it will be. However, as penetration of
Distributed Energy Resources (DERs) increases, inertia is decreasing.
For instance, CAISO sometimes gets as much as 80% of its energy from
photovoltaic (PV) sources.[1]
With inertia vanishing from our grid, are we doomed to ever-worsening
control performance, voltage flicker, and regular outages?
On November 14, Robert Lasseter[2] addressed Madison's joint chapter
of PES and IAS on this topic. The future of grid reliability could be
in the transition from grid-following inverters to grid-forming
inverters.
The design of grid-forming inverters is based on experience in
implementing micro-grids, which generally have no connected mechanical
inertia and also work well without any storage.
Professor Lasseter showed plots demonstrating that systems can
actually have better post-incident response with no mechanical
inertia. The reason for this counter-intuitive result is that an
incident will tend to draw energy from the rotating inertia, which
must be replenished before the system can recover. With grid-forming
inverters, response is (effectively) instantaneous.
Two of the many open issues that need to be addressed by utilities
rather than by academics are:
- How should we be determining and allocating reserves?
- After instantaneous inverter response holds the system together
(akin to primary control), how should the equivalents of secondary and
tertiary control reallocate that response?
[1] <https://www.energy.gov/eere/articles/confronting-duck-curve-how-address-over-generation-solar-energy>
[2] Emeritus Professor of ECE at UW, Site director of PSERC
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