Primary Frequency Response with Aggregated DERs: Preprint

Emiliano Dall-Anese, Swaroop Guggilam, Sairaj Dhople, Yu Chen, Changhong Zhao

Research output: Contribution to conferencePaper


Power networks have to withstand a variety of disturbances that affect system frequency, and the problem is compounded with the increasing integration of intermittent renewable generation. Following a large-signal generation or load disturbance, system frequency is arrested leveraging primary frequency control provided by governor action in synchronous generators. In this work, we propose a framework for distributed energy resources (DERs) deployed in distribution networks to provide (supplemental) primary frequency response. Particularly, we demonstrate how power-frequency droop slopes for individual DERs can be designed so that the distribution feeder presents a guaranteed frequency-regulation characteristic at the feeder head. Furthermore, the droop slopes are engineered such that injections of individual DERs conform to a well-defined fairness objective that does not penalize them for their location on the distribution feeder. Time-domain simulations for an illustrative network composed of a combined transmission network and distribution network with frequency-responsive DERs are provided to validate the approach.
Original languageAmerican English
Number of pages10
StatePublished - 2017
Event2017 American Control Conference - Seattle, Washington
Duration: 24 May 201726 May 2017


Conference2017 American Control Conference
CitySeattle, Washington

NREL Publication Number

  • NREL/CP-5D00-67883


  • distributed energy resources
  • distribution systems
  • primary frequency response
  • virtual power plants


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