Services Provided

Grid Science Solutions provides advanced power system services built on SE+, a robust, optimization-based state estimation technology designed to address the limitations of conventional EMS tools. Our services focus on state estimation reliability, system model accuracy, operational resilience, and EMS data integrity.

1. Improving Real-Time State Estimation Using Offline Backup SE+

Traditional WLS-based state estimators may diverge, fail to converge, or produce biased results under severe bad data, model errors, or stressed operating conditions. SE+ is designed to function as a reliable offline or parallel backup, ensuring operators always have access to a feasible and meaningful solution.

This service provides:

• A guaranteed convergent and feasible state estimation solution when WLS-based estimators diverge or fail

• Root-cause identification of why WLS diverges, including leverage points and conflicting measurements

• Clear identification of bad data that bias or destabilize real-time state estimation

• Cross-validation of EMS results to improve operator confidence

SE+ does not replace existing EMS estimators; instead, it strengthens real-time operations by serving as a diagnostic and verification engine.

2. Improving System Model Accuracy and Parameter Integrity

Accurate system models are essential for reliable state estimation, contingency analysis, and real-time decision-making. SE+ provides a practical and systematic way to expose hidden model errors that are difficult or impossible to detect using conventional methods.

This service includes:

Topology and Connectivity Validation

• Detection of incorrect breaker and switch status

• Identification of topology errors caused by pseudo switches

• Validation of network connectivity inconsistencies

Parameter Error Detection and Estimation

• Detection of incorrect line and transformer parameters

• Statistical estimation of true parameter values using multiple SE+ runs over extended time periods

• Validation of updated parameters prior to EMS deployment

Measurement Mapping and Configuration Validation

• Detection of misplaced measurement keys

• Identification of duplicate keys and wrong measurement positions

• Detection of inverted measurements caused by incorrect key assignment

Component Value Estimation

• Estimation of zero-sequence susceptance of shunts

• Estimation and validation of transformer tap positions

• Detection of shunt-related modeling and acceptance errors

This service helps utilities continuously improve and maintain high-fidelity EMS models as the system evolves.

3. Supporting Real-Time Operations During Extreme Events and High-Stress Conditions

Extreme weather events and large, fast-changing loads—such as AI training centers and data centers—can push power systems into operating regimes where traditional state estimation becomes unstable or unreliable.

SE+ provides real-time diagnostic support during these conditions.

This service enables:

• Diagnosis of state estimation malfunctions caused by extreme weather events

• Identification of data and model inconsistencies triggered by rapid load or topology changes

• Reliable state estimation support during abnormal or emergency operating conditions

• Enhanced situational awareness when conventional estimators lose robustness

By providing consistent diagnostic insight, SE+ helps operators maintain confidence in system visibility when it matters most.

4. EMS Data Flow Cleaning and Quality Assurance

Poor data quality within EMS data pipelines can silently degrade multiple applications, including state estimation, contingency analysis, and system monitoring. SE+ acts as a powerful tool for data flow validation and cleanup.

This service includes:

• Identification of corrupted, inconsistent, or misleading measurement streams

• Detection of data issues hidden by redundancy or pseudo measurements

• Support for cleaning historical and real-time EMS data

• Validation of data integrity during EMS upgrades or migrations

By improving the quality of EMS data at its source, this service enhances the reliability of all downstream applications.

Designed for Real-World Utility Operations

All Grid Science Solutions services are designed for practical deployment using real EMS and SCADA data. SE+ complements existing tools by providing deep diagnostic insight, guaranteed feasibility, and actionable results—helping utilities move from reactive troubleshooting to proactive system assurance.