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Pterra at IEEE TPEC 2025

Meet Pterra’s Francis Luces & Yifu Li at Texas A&M University during the IEEE TPEC 2025 event on Feb 10-11, 2025! Pterra will be presenting our technical paper, “dqBOT: An Automation Tool for Benchmarking Dynamic Quality in Generator Interconnections.”

We look forward to sharing our insights and engaging with industry professionals at this prestigious conference. Stay tuned for more details!

Abstract—In response to the recent Federal Energy Regulatory Commission (FERC) Order 2023, which mandates the use of cluster studies to expedite the interconnection process, Independent System Operators (ISOs) and Regional Transmission Organizations (RTOs) are now confronted with the challenge of managing hundreds of interconnection applications simultaneously. FERC also requires interconnection customers submitting nonsynchronous generator facilities, such as inverter-based resources (IBRs), to provide the root-mean-square (RMS) positive sequence dynamic model and the validated electromagnetic transient (EMT) model. These requirements, aimed at ensuring model accuracy across various scenarios—such as reactive power limits, frequency and voltage changes, fault ride through, and grid stiffness—pose a time-consuming and error-prone challenge for engineers. This paper proposed an automation tool, dqBOT, developed to streamline the testing process by automating procedures, reducing misinterpretation, and enabling engineers to focus more on analysis. dqBOT has been validated against the established tools of the Electric Reliability Council of Texas (ERCOT), demonstrating qualified results. Additionally, dqBOT can be applied in other ISOs/RTOs to meet their testing requirements. It can also automatically compare the results between RMS and EMT models, accelerating the tuning process of the RMS model.

The full paper is available upon request for our client, please contact your project manager or info@pterra.us

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Pterra at PSCAD UGM 2023

Introducing Our Principal Engineers’ Talk at PSCAD UGM 2023, Boston!

 

Join us at PSCAD UGM 2023 in Boston, where our Principal Engineers will unveil a compelling case study. A load break switch’s unexpected failure during a vital task led to an extended arcing event, triggering a single line-to-ground fault. Using PSCAD/EMTDC simulation, we examined the interrupter’s transient recovery voltage (TRV). In a restrike scenario, the transient current surged to 1000 A, and the peak line-to-ground voltage spiked to 2.20 p.u. Notably, the computed TRV reached 536 kV post-restrike, surpassing the interrupter’s 480 kV TRV capability rating.

This study highlights two key recommendations:

  1. Enhanced Operational Protocols: For interrupters without capacitive switching ratings, review and refine switching procedures.
  2. Empowering Line Charging Interruption: Explore interrupters with capacitive current interruption capabilities to handle unloaded transmission lines.

For the full slide set and deeper insights, contact us at info@pterra.us. Don’t miss this illuminating presentation shaping the future of power engineering!

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