
Transitioning to Improved Renewable Energy Models in Power System Software
Explore the transition from REGC_A to REGC_C models in power system software for representing renewable energy resources. Learn about the benefits and differences between the two models, including enhanced control features and improved stability. Discover the timeline for future releases and considerations for implementation.
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Presentation Transcript
DWG Report to ROS Zhenhua Wang DWG Chair November 7th, 2022
DWG Update DWG WebEx meeting on 10/18/2022 Future transitioning to REGC_C model ROS approval of DWG procedure
Future transitioning to REGC_C model REGC_A model is 2nd generation (WECC) generic model used in PSSE software to represent renewable energy resources. There are 521 renewable resources modeled in current DWG dynamic base cases. 244 use REGC_A (2022 DWG base case release). REGC_C is a more advanced model developed by EPRI in partnership with WECC.
REGC_A model vs REGC_C model: o REGC_C model has approximate representation of inverter s inner current control loop and phase lock loop o REGC_C model can provide insight into inverter control instability that can be further studied in EMT domain o REGC_C (and REGC_B) resolves numerical and convergence problems associated with REGC_A in low short circuit conditions o REGC_C tested for consistent behavior across different software platforms including PSSE
Timeline o Current DWG case release is based on PSSE v33. Next release (2023) will be based on v35 o REGC_C is not included by PSSE v35 yet o DWG will consider transition when REGC_C model is supported by PSSE v35 o REGC_C will require parameterization by OEMs