TY - GEN
T1 - Impact of Distributed Energy Resource Integration on Real-time Energy Market Oscillation
AU - Zuo, Kunyu
AU - Liu, Yikui
AU - Xia, Jiarong
AU - Yang, Yafei
AU - Wu, Lei
AU - Chen, Yonghong
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - With the growing penetration of small-scale distributed energy resources (DER), DERs are allowed to participate in the independent system operator (ISO) energy market in the form of aggregation. However, the current approximation model for aggregated DERs, in terms of distribution factors (DF), cannot reflect their actual contributions to power flows of transmission lines, thus leading to market clearing solutions that are suboptimal or even infeasible to the physical system. In this paper, we use real-time security-constrained economic dispatch (RT-SCED) problem as an example to show that DF based DER aggregation approach could lead to oscillations in consecutive time intervals, and analyze the reasons behind this. A novel network equivalence based DER aggregation approach is put forward to mitigate the oscillation and ensure the physical feasibility of RT-SCED solutions. Numerical simulations illustrate the oscillation of DF based approach, and validate effectiveness of the proposed approach.
AB - With the growing penetration of small-scale distributed energy resources (DER), DERs are allowed to participate in the independent system operator (ISO) energy market in the form of aggregation. However, the current approximation model for aggregated DERs, in terms of distribution factors (DF), cannot reflect their actual contributions to power flows of transmission lines, thus leading to market clearing solutions that are suboptimal or even infeasible to the physical system. In this paper, we use real-time security-constrained economic dispatch (RT-SCED) problem as an example to show that DF based DER aggregation approach could lead to oscillations in consecutive time intervals, and analyze the reasons behind this. A novel network equivalence based DER aggregation approach is put forward to mitigate the oscillation and ensure the physical feasibility of RT-SCED solutions. Numerical simulations illustrate the oscillation of DF based approach, and validate effectiveness of the proposed approach.
KW - Distributed energy resources
KW - aggregation bidding
KW - distribution factor
KW - oscillation
KW - real-time economic dispatch
UR - http://www.scopus.com/inward/record.url?scp=85124152476&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85124152476&partnerID=8YFLogxK
U2 - 10.1109/PESGM46819.2021.9637897
DO - 10.1109/PESGM46819.2021.9637897
M3 - Conference contribution
AN - SCOPUS:85124152476
T3 - IEEE Power and Energy Society General Meeting
BT - 2021 IEEE Power and Energy Society General Meeting, PESGM 2021
T2 - 2021 IEEE Power and Energy Society General Meeting, PESGM 2021
Y2 - 26 July 2021 through 29 July 2021
ER -