Robust State Estimator SE+ for Reliable Grid Operations:

Guaranteed convergence. Superior bad data rejection. Proven on real utility systems:

- 100% guarrantee of a feasible solution

- >10× faster than conventional methods

- Significant reduction in abnormal residuals

- Improvement of accuracy model

- Validated on large-scale utility systems

Facing Problems:

- Traditional WLS estimators:

• sensitive to bad data
• prone to divergence
• difficult to diagnose issues

- Increasing challenges:

• renewable variability
• extreme weather
• Rapid growth of AI data centers, resulting in highly dynamic system operations and increased uncertainty in load forecasting and grid stability.

SE+: A New Paradigm for State Estimation

SE+ is a next-generation state estimator that fundamentally overcomes the limitations of traditional methods. Instead of minimizing residuals from all data—including bad data—SE+ selects the most consistent measurement set and guarantees a feasible, accurate solution.

SE+ resolves key limitations of traditional state estimators, including divergence, bad data sensitivity, and leverage point issues.