Bulk Grid Frequency Support Using Electrolyzers

Bikiran Guha, Rishabh Jain, Santosh Veda

Research output: Contribution to conferencePaperpeer-review

4 Scopus Citations


Increasing renewable penetration in the bulk power systems has resulted in declining inertial response of the generation during system disturbances. This results in larger frequency deviations and oscillations during such events. This paper proposes a strategy for controlled dispatch of electrolyzers as loads to improve the system's frequency response. A droop based controller with constraints based on electrolyzer operating limits has been developed to regulate its load. Consecutively, a localized frequency based control strategy has been developed to support the bulk system during disturbances. The impact of the electrolyzer support has been demonstrated using the 23-bus SAVNW system, and the 240-bus WECC system for baseline, 25% and 50% renewable penetration. The impact of changing droop settings and the available controllable electrolyzer capacities on the system's frequency response has also been presented. Overall, the dispatchable electrolyzers helps improve (reduce) both the maximum frequency deviation and the settling times during common disturbances like loss of load/generation, and line faults. Systems with lower inertia were seen to benefit more from the controlled electrolyzer dispatch.

Original languageAmerican English
Number of pages5
StatePublished - 10 Oct 2020
Event2020 IEEE Industry Applications Society Annual Meeting, IAS 2020 - Detroit, United States
Duration: 10 Oct 202016 Oct 2020


Conference2020 IEEE Industry Applications Society Annual Meeting, IAS 2020
Country/TerritoryUnited States

Bibliographical note

Publisher Copyright:
© 2020 IEEE.

NREL Publication Number

  • NREL/CP-5D00-75368


  • controllable loads
  • distributed energy resources
  • Electrolyzers
  • frequency response
  • loss of inertia


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