Optimizing electrons…
Optimizing electrons…
A dynamic model is a digital twin of your facility's electrical behavior. Dynamic Model Studio lets you import a .dyr, validate it against ERCOT's rules, simulate the full Model Quality Test catalog, and export a submission-ready package for your TSP/DSP — replacing the macro-driven Excel template with a collaborative, auditable, cloud-native workflow.
Sign-in required — create an account to run tests in the Client Portal.
ERCOT is raising the bar on dynamic modeling, driven by the rapid growth of power-electronics-dominated loads — data centers and other Large Electronic Loads (LELs) — and by system events where load-tripping behavior created reliability concerns. Accurate dynamic representation of large loads is now essential for transmission stability studies, weak-grid evaluations, and operating assessments.
A proposed Planning Guide Revision Request (PGRR) would formalize dynamic data expectations, mandate PSCAD and Model Quality Testing for all large loads, and add a Converter Model Validation test for LELs — with simplified composite load models no longer sufficient. For large-load and data-center developers, dynamic modeling now runs throughout the interconnection lifecycle.
PGRR details are preliminary and subject to change as ERCOT workshops continue.
Dynamic data review is embedded at multiple checkpoints — before the LLIS stability study, pre-QSA, and prior to initial energization.
PSCAD models become required for all large loads regardless of subsynchronous-oscillation applicability — not just SSO or co-located cases.
PSS/E, PSCAD, and TSAT MQT required before stability studies and QSA — including a new Converter Model Validation test for LELs.
You must confirm that as-built settings match the studied models before your facility can energize.
A significant change — like a crypto-to-data-center conversion or a control-system update — can push an existing LEL back into the interconnection process.
Four steps replace weeks of spreadsheet rework and back-and-forth with ERCOT reviewers.
Drag in a PSS/E dynamic data file. We parse every record — bus, model, ID, parameters — auto-categorize models (generator, exciter, governor, plant, protection), and populate all template tabs.
A guided workspace mirroring ERCOT's Universal Template: Overview, Parameters, NOGRR-245, Nameplate Check, and the Verification Report — with live validation that flags rejection risks before you submit.
Pick your facility type and we build the correct Model Quality Test matrix — flat-start, voltage steps, HVRT/LVRT, frequency steps, SCR sweep, phase-angle jump — then overlay the responses on one axis.
One click produces a validated .dyr, the Verification Report, the MQT overlay report, and a correctly named RIOO-RS package with checksum — ready to share with your TSP/DSP.
We rebuilt ERCOT's Universal Dynamic Model Template as a web workspace — the same structure your reviewers already know, with validation and version history built in. All tabs are provisioned and reconciled before the final report is shared.
Standard-library and user-defined (UDM) models are both supported, including REGC_A / REGC_B interface selection and the no-headroom default for inverter-based resources.
Resource type, site code, up to 6 aggregate units
Full tunable parameter matrix, inline editable
Ride-through applicability & preferred-envelope election
RIOO ↔ PSS/E ↔ PSCAD reconciliation
Value, method, match, explanation per parameter
Round-trip .dyr with site-specific token substitution
The twin runs ERCOT's test catalog and overlays PSS/E, PSCAD, and TSAT responses on one axis — the exact evidence reviewers look for. Scenario sets adapt to your facility type: standalone, ESR, hybrid, AGS-ESR, or resource-plus-large-load.
Weak-grid honesty is built in: below SCR ≈ 2 the platform flags that a vendor EMT (PSCAD) run is authoritative, and screens the response before you commit to the licensed study.
For Large Electronic Loads, we compose the model the way ERCOT now expects — EPRI UDM for the power-electronic/UPS portion and CMLD for cooling — and run the Converter Model Validation (CMV) test against your converter and compute-load profile, aligned to NOGRR-282 ride-through.
Whether you're entering Quarterly Stability Assessment, approaching Part 3 commissioning, or facing a MOD-026/027 cycle, we'll help you package a first-time-right submission.