Modeling of DC-Side Dynamics in PV/Battery Grid-forming Inverter Systems
Modeling of DC-Side Dynamics in PV/Battery Grid-forming Inverter Systems
The DC-side dynamics of two-stage grid-forming (GFM) inverters are often neglected or oversimplified in power system studies, although they play a vital role in stability. Detailed models for the primary source and power converter are not practical for complexity reasons, leading usually to DC side representations that omit critical aspects such as the operational limits. To bridge this gap between accuracy and simplicity, this paper proposes for the first time an equivalent model for the DC side dynamics of GFM systems that captures all important dynamics and limits in a simple formulation. The model supports either batteries or photovoltaic arrays as a primary source and is easily parameterizable with minimal information, thus proving a useful tool for grid stability studies. Time-domain simulations validate the proposed equivalent model.
DC-Side dynamics, grid-forming, solar photovoltaic (PV), maximum power point, battery, state of charge
Luo, Xi
cfaf6d5c-15fa-4c03-bdca-9e3d80ea448a
Singh, Abhinav Kumar
6df7029f-21e3-4a06-b5f7-da46f35fc8d3
Batzelis, Stratis
2a85086e-e403-443c-81a6-e3b4ee16ae5e
Luo, Xi
cfaf6d5c-15fa-4c03-bdca-9e3d80ea448a
Singh, Abhinav Kumar
6df7029f-21e3-4a06-b5f7-da46f35fc8d3
Batzelis, Stratis
2a85086e-e403-443c-81a6-e3b4ee16ae5e
Luo, Xi, Singh, Abhinav Kumar and Batzelis, Stratis
,
Alexandros G. Paspatis and Nikolaos Hatziargyriou
(2023)
Modeling of DC-Side Dynamics in PV/Battery Grid-forming Inverter Systems.
2023 IEEE PES General Meeting, Hyatt Regency Orlando, Orlando, United States.
16 - 20 Jul 2023.
5 pp
.
(In Press)
Record type:
Conference or Workshop Item
(Paper)
Abstract
The DC-side dynamics of two-stage grid-forming (GFM) inverters are often neglected or oversimplified in power system studies, although they play a vital role in stability. Detailed models for the primary source and power converter are not practical for complexity reasons, leading usually to DC side representations that omit critical aspects such as the operational limits. To bridge this gap between accuracy and simplicity, this paper proposes for the first time an equivalent model for the DC side dynamics of GFM systems that captures all important dynamics and limits in a simple formulation. The model supports either batteries or photovoltaic arrays as a primary source and is easily parameterizable with minimal information, thus proving a useful tool for grid stability studies. Time-domain simulations validate the proposed equivalent model.
Text
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Accepted/In Press date: 22 February 2023
Venue - Dates:
2023 IEEE PES General Meeting, Hyatt Regency Orlando, Orlando, United States, 2023-07-16 - 2023-07-20
Keywords:
DC-Side dynamics, grid-forming, solar photovoltaic (PV), maximum power point, battery, state of charge
Identifiers
Local EPrints ID: 480503
URI: http://eprints.soton.ac.uk/id/eprint/480503
PURE UUID: 358054a3-d911-4202-8bf0-5db0f69fe0b4
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Date deposited: 03 Aug 2023 17:17
Last modified: 17 Mar 2024 04:06
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Contributors
Author:
Xi Luo
Author:
Abhinav Kumar Singh
Author:
Stratis Batzelis
Corporate Author: Alexandros G. Paspatis
Corporate Author: Nikolaos Hatziargyriou
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