Integrated Transmission and Distribution Co-Simulation Platform for Demonstration of Bulk Grid Services Using Distributed Energy Resources

Venkateswara Reddy Motakatla (), Weijia Liu, Jun Hao, Harsha Vardhana Padullaparti, Utkarsh Kumar, Seong Lok Choi and Ismael Mendoza
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Venkateswara Reddy Motakatla: National Renewable Energy Laboratory, Golden, CO 80401, USA
Weijia Liu: National Renewable Energy Laboratory, Golden, CO 80401, USA
Jun Hao: National Renewable Energy Laboratory, Golden, CO 80401, USA
Harsha Vardhana Padullaparti: National Renewable Energy Laboratory, Golden, CO 80401, USA
Utkarsh Kumar: National Renewable Energy Laboratory, Golden, CO 80401, USA
Seong Lok Choi: National Renewable Energy Laboratory, Golden, CO 80401, USA
Ismael Mendoza: National Renewable Energy Laboratory, Golden, CO 80401, USA

Energies, 2024, vol. 17, issue 13, 1-16

Abstract: In September 2020, the Federal Energy Regulatory Commission (FERC) released Order 2222, which opens wholesale markets to small-capacity distributed energy resources (DERs), recognizing their potential in improving operational efficiency by providing bulk grid services. Therefore, a co-simulation capability that can connect transmission and distribution (T&D) simulations and evaluate the impacts of DER provision of bulk grid services is needed. In this paper, we present a new integrated T&D co-simulation platform that incorporates T&D system simulators, DER aggregator/group strategies, and a co-simulation coordinator. Industry-standard communication protocols are employed to mimic real-world conditions. Secondary frequency regulation is selected as the representative bulk grid service, and we simulate the responses of DERs to the frequency regulation signals. The simulation results for a solar-rich distribution feeder in Colorado, USA, demonstrate how the T&D co-simulation setup is used to evaluate the contributions of DERs to minimize the bulk grid frequency deviation.

Keywords: distributed energy resource (DER); grid service; frequency regulation; T&D co-simulation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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