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Grid Interconnection Modeling of Inverter Based Resources (IBR) Plant for Transient Analysis

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Listed:
  • Himadry Shekhar Das

    (Department of Electrical and Computer Engineering, The University of Alabama, Tuscaloosa, AL 35401, USA)

  • Shuhui Li

    (Department of Electrical and Computer Engineering, The University of Alabama, Tuscaloosa, AL 35401, USA)

  • Shahinur Rahman

    (Department of Electrical and Computer Engineering, The University of Alabama, Tuscaloosa, AL 35401, USA)

Abstract

The increase in penetration levels of inverter-based resources (IBRs) is changing the dynamic performance of power grids of different parts of the world. IBRs are now being more and more integrated into the grid at a single connection point as an IBR plant. Due to the complex nature and dynamicity of each inverter model, it is not realistic to build and analyze full complex models of each inverter in the IBR plant. Moreover, simulating a large plant including detailed models of all the IBRs would require high computing resources as well as a long simulation time. This has been the main issue addressed in the new IEEE Std 2800-2022. This paper proposes a novel approach to model an IBR plant, which can capture the transient nature at the plant level, detailed IBR control at the inverter level, interactions of multiple IBR groups in a plant structure, and a collector system connecting the IBRs to the grid. The IBRs in the plant use a voltage source inverter topology combined with a grid-connected filter. The control structure of the IBR includes a cascaded loop control where an inner current control and outer power control are designed in the dq-reference frame, and a closed-loop phase-locked loop is used for the grid synchronization. The mathematical study is conducted first to develop aggregated plant models considering different operating scenarios of active IBRs in an IBR plant. Then, an electromagnetic transient simulation (EMT) model of the plant is developed to investigate the plant’s dynamic performance under different operating scenarios. The performance of the aggregated plant model is compared with that of a detailed plant model to prove the effectiveness of the proposed strategy. The results show that the aggregated EMT simulation model provides almost the same result as the detailed model from the plant perspective while the running time/computation burden is much lower.

Suggested Citation

  • Himadry Shekhar Das & Shuhui Li & Shahinur Rahman, 2023. "Grid Interconnection Modeling of Inverter Based Resources (IBR) Plant for Transient Analysis," Energies, MDPI, vol. 16(7), pages 1-20, April.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:7:p:3211-:d:1114302
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    References listed on IDEAS

    as
    1. Himadry Shekhar Das & Md Nurunnabi & Mohamed Salem & Shuhui Li & Mohammad Mominur Rahman, 2022. "Utilization of Electric Vehicle Grid Integration System for Power Grid Ancillary Services," Energies, MDPI, vol. 15(22), pages 1-15, November.
    2. Roni Luhtala & Tuomas Messo & Tomi Roinila & Henrik Alenius & Erik de Jong & Andrew Burstein & Alejandra Fabian, 2019. "Identification of Three-Phase Grid Impedance in the Presence of Parallel Converters," Energies, MDPI, vol. 12(14), pages 1-15, July.
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