Impact of DER Communication Delay in AGC: Cyber-Physical Dynamic Co-Simulation: Preprint

Wenbo Wang, Xin Fang, Anthony Florita

Research output: Contribution to conferencePaper


Distributed energy resource (DER) frequency regulations are promising technologies for future grid operation. Unlike conventional generators, DERs might require open communication networks to exchange signals with control centers, possibly through DER aggregators; therefore, the impacts of the communication variations including the latency on the system frequency stability need to be investigated. This paper develops a cyber-physical dynamic simulation (CPDS) model based on the Hierarchical Engine for Large-Scale Co-Simulation (HELICS) to evaluate the impact of the communication variations, such as delays in DER frequency regulations. The feasible delay range can be obtained under different AGC parameter settings. The results show that the risk of instability generally increases with the communication delay and that the difference of AGC provided from DER and conventional generation units should be recognized when designing frequency regulation controllers.
Original languageAmerican English
Number of pages8
StatePublished - 2021
Event48th IEEE Photovoltaic Specialists Conference (PVSC 48) -
Duration: 20 Jun 202025 Jun 2020


Conference48th IEEE Photovoltaic Specialists Conference (PVSC 48)

NREL Publication Number

  • NREL/CP-5C00-80096


  • automatic generation control
  • communication delay
  • cyber-physical
  • distributed energy resources
  • dynamic simulation


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