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DTSTART;TZID=America/Los_Angeles:20240214T140000
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DESCRIPTION:This webinar delves into a case study focusing on zonal control
  in a complex island grid hosting grid-forming (GFM) and grid-following (G
 FL) inverter-based resources (IBRs). The investigation addresses key quest
 ions relevant to stable operation after disconnection from the transmissio
 n network:\n\n1) What is the minimum required GFM installed capacity for s
 table operation after disconnection?\n\n2) Is it more effective to deploy 
 multiple distributed GFM inverters at low voltage (400 V) or a few large G
 FM inverters at medium voltage (20 kV)?\n\n3) Can inverter local control e
 nsure long-term stability and adequate island operation\, or is centralize
 d control required?\n\nConducted in a combined medium- and low-voltage net
 work representative of German grids\, the study employs a highly complex m
 odel with 5483 buses\, 569 distributed energy resources (DERs) at 400 V\, 
 and 6 large-scale IBRs at 20 kV. Leveraging SimBench datasets publicly ava
 ilable for power system analysis tools\, the models include dynamic compon
 ents and use the Western Electricity Coordinating Council (WECC) models fo
 r GFL inverters (specifically\, the WECC_REGC_C IBR model for converter-dr
 iven oscillations in weak systems).\n\nThe paper addresses these questions
  through positive-sequence root-mean-square (RMS) simulations and frequenc
 y-domain analysis using the Fourier transform. The study proposes and vali
 dates a zonal control that coordinates DERs' efforts within its area by co
 nducting hundreds of simulations to address uncertainties such as the geog
 raphical location of DERs in the distribution grid. This control sends nec
 essary corrections to bring distribution voltages within adequate values. 
 The webinar demonstrates how\, within seconds\, local control of inverters
  responds rapidly to disturbances\, enhancing short-term dynamics. Simulta
 neously\, the zonal control coordinates various DERs to refine local corre
 ctions within a timeframe of tens of seconds.\n\nCo-sponsored by: Universi
 ty of California\, Riverside\n\nSpeaker(s): Luis David Pabón Ospina\, \n\
 nVirtual: https://events.vtools.ieee.org/m/401052
LOCATION:Virtual: https://events.vtools.ieee.org/m/401052
ORGANIZER:mail@maxcherubin.com
SEQUENCE:14
SUMMARY:Combined Zonal and Local Control Using Grid-forming Inverters in a 
 Complex Medium- and Low-voltage Island Grid: a Study Case in a Realistic G
 erman Network
URL;VALUE=URI:https://events.vtools.ieee.org/m/401052
X-ALT-DESC:Description: <br /><p>This webinar delves into a case study focu
 sing on zonal control in a complex island grid hosting grid-forming (GFM) 
 and grid-following (GFL) inverter-based resources (IBRs). The investigatio
 n addresses key questions relevant to stable operation after disconnection
  from the transmission network:</p>\n<p>1) What is the minimum required GF
 M installed capacity for stable operation after disconnection?</p>\n<p>2) 
 Is it more effective to deploy multiple distributed GFM inverters at low v
 oltage (400 V) or a few large GFM inverters at medium voltage (20 kV)?</p>
 \n<p>3) Can inverter local control ensure long-term stability and adequate
  island operation\, or is centralized control required?</p>\n<p>Conducted 
 in a combined medium- and low-voltage network representative of German gri
 ds\, the study employs a highly complex model with 5483 buses\, 569 distri
 buted energy resources (DERs) at 400 V\, and 6 large-scale IBRs at 20 kV. 
 Leveraging SimBench datasets publicly available for power system analysis 
 tools\, the models include dynamic components and use the Western Electric
 ity Coordinating Council (WECC) models for GFL inverters (specifically\, t
 he WECC_REGC_C IBR model for converter-driven oscillations in weak systems
 ).</p>\n<p>The paper addresses these questions through positive-sequence r
 oot-mean-square (RMS) simulations and frequency-domain analysis using the 
 Fourier transform. The study proposes and validates a zonal control that c
 oordinates DERs' efforts within its area by conducting hundreds of simulat
 ions to address uncertainties such as the geographical location of DERs in
  the distribution grid. This control sends necessary corrections to bring 
 distribution voltages within adequate values. The webinar demonstrates how
 \, within seconds\, local control of inverters responds rapidly to disturb
 ances\, enhancing short-term dynamics. Simultaneously\, the zonal control 
 coordinates various DERs to refine local corrections within a timeframe of
  tens of seconds.</p>
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