Advanced Energy Management System (AEMS)

The digital transformation of utilities requires full mobilization of network assets in a reliable way to ensure maximum transmission of energy from multiple sources. High renewable energy penetration, intermittency and low inertia generate an increased level of threats, which require a full understanding of real-time and future network status, to allow a fast response as rapid changes occur.

GE’s Advanced EMS integrates the power of EMS, Renewables, WAMS and Analytics to enable operators to better operate, optimize and analyze while minimizing risk and increasing flexibility.

CIM is a leap forward in traditional modeling of electric networks.

A new power system model management application for effectively managing time-based models, across multiple business domains within the enterprise (Operations, Planning, Protection) and with neighboring utilities. It provides a complete business process automation for importing, aggregating, validating, and exporting models in different formats, including CIM-16/CGMES. The models are validated for wide areas from a network security or market perspective. They are validated for the short and mid-term, for multiple points in time.

Network Modeling Manager benefits:

• Model merge and validation capabilities
• Comprehensive Network Analysis Study for Wide Area and Look Ahead on single or merged models
• Elimination of duplicate modeling efforts
• Automation of manual processes and reduced response time to complete studies
• Import/export of different formats (CIM/CGMES Standards and multiple vendors)
• Supports planning, operational, and a combination of both models
• Improves quality and accuracy of the model, thus reducing likelihood of errors
• Based on the same algorithms proven in Real-Time EMS

AEMS now embeds WAMS and Phasor Data Concentrator (PDC) as an inside component of the solution. Network security and efficiency is augmented as a result of data resolution provided by phasor data and associated analysis. Coupled with the DSA TSA model approach, WAMS Look Ahead forecasting predicts future network situations.

Stability applications:

• Angle-based Grid Management
• Enhanced Island Management
• Enhanced Disturbance Management
• Alarm Management

Wide Area Management System (WAMS) Benefits:

• Increase Reliability and Resiliency:
  • Stability limits, island recovery, wide area defense
  • Restoration and fast resynchronization
• Increase capacity:
  • Corridor transfer, voltage stability
• High renewable penetration:
  • Angle constraints control
  • Fast frequency response with low inertia
• Accelerate disturbance analysis with true data

At the Heart of the Advanced EMS solution, Network Security and Optimization ensures the network will not collapse while optimizing the operations. Key applications includes:

• Contingency Analysis
• Contingency Planning
• Corrective Controls
• Dynamic Line Rating
• Load Flow Calculation
• Loss Minimization
• Operator Guide
• Optimal Power Flow
• Quick Network Analysis
• Schemes (RAS)
• Security Constraint Dispatch
• Security Enhancement
• Short-Circuit Analysis
• Small Signal Stability
• Special Protection Schemes and Remedial Action
• State Estimation
• Topology Estimator
• Topology Processor
• Transient Stability
• Voltage Stability
• Voltage/VAR Dispatch
• Volt-Var Control (VVC)

Network Security and Optimization Benefits:

• More power flow transfer through the network
• Increase security with identification of true limits
• Improve reliability
• Preserve investment, thanks to extension points for special customer schemes

• Efficient assessment of a power system event.
• Restoration plan not as manually driven.
• Avoid unintentional situations (de-energization, new island, non-sustainable frequency, excessive pick-up load, critical violations, etc.).
• Create clear operator awareness of the situation and restoration steps.

Real-Time System Restoration Manager benefits:

• Faster restoration of power after islanding or blackout.
• A what-if assessment, thanks to digitization of existing restoration plans and trial using DTS.
• Auto-generation of new restoration plans matching available assets.
• NERC compliance > DTS auto-validation of plans.

Grid Simulation — The Dispatch Training Simulator (DTS) is a perfect replication of AEMS Initialization from a real time and historian snapshot.

The Dynamic Dispatch Training Simulator captures transient behavior of the power system following a disturbance or switching action. It provides sub-second simulated phasor data in the DTS environment.

The simulator enables the training of WAMS applications to facilitate operator adoption.

Grid Simulation benefits:

• OPEX cost savings: same technology as AEMS
• Fast set up of simulation with real time and historian data snapshot
• Trainee evaluation and grading
• First WAMS–EMS simulator