Impact of Distributed Energy Resource Integration on Real-time Energy Market Oscillation

Kunyu Zuo, Yikui Liu, Jiarong Xia, Yafei Yang, Lei Wu, Yonghong Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

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.

Original languageEnglish
Title of host publication2021 IEEE Power and Energy Society General Meeting, PESGM 2021
ISBN (Electronic)9781665405072
DOIs
StatePublished - 2021
Event2021 IEEE Power and Energy Society General Meeting, PESGM 2021 - Washington, United States
Duration: 26 Jul 202129 Jul 2021

Publication series

NameIEEE Power and Energy Society General Meeting
Volume2021-July
ISSN (Print)1944-9925
ISSN (Electronic)1944-9933

Conference

Conference2021 IEEE Power and Energy Society General Meeting, PESGM 2021
Country/TerritoryUnited States
CityWashington
Period26/07/2129/07/21

Keywords

  • Distributed energy resources
  • aggregation bidding
  • distribution factor
  • oscillation
  • real-time economic dispatch

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