TY - GEN
T1 - Grid of Near Future
T2 - 2022 IEEE Power and Energy Society General Meeting, PESGM 2022
AU - Karunaratne, Lilan
AU - Yogarathnam, Amirthagunaraj
AU - Ray Chaudhuri, Nilanjan
AU - Yue, Meng
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - Similar to the traditional ac grids, a secure operation of near future grids with high penetration of converter-interfaced generations (CIGs) including grid-forming converters (GFCs) following a single-point failure, i.e., an (N-1) contingency, is a fundamental problem during the contingency screening and ranking. The increasing CIGs introduce dynamics of different time scales and may change the dynamic behaviors of the grid under (N-1) contingencies. This paper focuses on the contingency analysis of such grids following synchronous generator (SG) outages i.e., the impact of GFCs following a SG outage on such analysis due to their dc-side current limits. To this end, an averaged model of GFCs is developed, and the dc side dynamics and the current limits are also modeled. Then, a revised online/offline generator outage contingency screening and ranking approach to take into account the effect of dc-link voltage collapse of GFCs is proposed. Finally, the proposed approach is validated using the time-domain simulation on a modified 2-area 4-machine test system with a GFC.
AB - Similar to the traditional ac grids, a secure operation of near future grids with high penetration of converter-interfaced generations (CIGs) including grid-forming converters (GFCs) following a single-point failure, i.e., an (N-1) contingency, is a fundamental problem during the contingency screening and ranking. The increasing CIGs introduce dynamics of different time scales and may change the dynamic behaviors of the grid under (N-1) contingencies. This paper focuses on the contingency analysis of such grids following synchronous generator (SG) outages i.e., the impact of GFCs following a SG outage on such analysis due to their dc-side current limits. To this end, an averaged model of GFCs is developed, and the dc side dynamics and the current limits are also modeled. Then, a revised online/offline generator outage contingency screening and ranking approach to take into account the effect of dc-link voltage collapse of GFCs is proposed. Finally, the proposed approach is validated using the time-domain simulation on a modified 2-area 4-machine test system with a GFC.
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U2 - 10.1109/PESGM48719.2022.9916887
DO - 10.1109/PESGM48719.2022.9916887
M3 - Conference contribution
AN - SCOPUS:85141454011
T3 - IEEE Power and Energy Society General Meeting
BT - 2022 IEEE Power and Energy Society General Meeting, PESGM 2022
PB - IEEE Computer Society
Y2 - 17 July 2022 through 21 July 2022
ER -