Device Setup 

Configuring Multilin devices in EnerVista Integrator is achieved through establishing communication with the device.

• Supports user-friendly, intuitive configuration of devices similar to EnerVista Viewpoint Monitoring and EnerVista Setup software
• Provides configuration settings for serial or Ethernet communications
• Tests communications to ensure accurate device configuration

Third-Party Devices

EnerVista Integrator supports third-party (non-GE Vernova) devices that utilize Modbus RTU or Modbus TCP/IP, providing a simple way to incorporate all devices into a monitoring and control system.

• Supports addition of Modbus RTU or Modbus TCP/IP third-party devices
• Provides direct configuration of Modbus mnemonics
• Results in reduced integration time for multiple installations of EnerVista Integrator by importing and exporting mnemonics files

GE Vernova's contingency action solution detects a disturbance in one part of an interconnected network which could result in interconnection overloading or frequency and voltage stability conditions. GE Vernova’s solution will take action to remediate these situations by stabilizing the load and generation on the networks thereby protecting the interconnect.

Contingency Action Solutions

• Detect major changes in any of the connected networks (faults)
• Measure overload in interconnect and associated voltage and frequency changes
• Shed load to reduce load on interconnect
• Drop generation to reduce overvoltage
• Trip the interconnect
• Balancing the two networks

Key Characteristics

• Millisecond response time (typically under 250ms)
• Supports existing protection and metering devices and protocols
• Can support complex network topologies (i.e., mesh grids)
• Provide advanced notice of interconnection trip to operators
• Available customized HMI

System oscillations* across an interconnect are caused by a major change (fault) in the connected networks and the associated sources are attempting to compensate to balance the load and generation. If oscillations persist local protections within a network will react to protect the asset and trip the generators offline.

Using synchrophasor, GE Vernova's system oscillation remediation solution detects network oscillations and determines if these will heal itself. When it is determined these oscillations will not heal itself, GE Vernova's solution will attempt to dampen the oscillations and if needed trip the interconnect.

Detection and dampening of system oscillations

• Detect prolonged/growing interconnect oscillations
• Trigger network damping circuits such as Power System Stabilizers (PSS) to dampen oscillations
• Temporary shed load to dampen large oscillations
• Temporary drop generation to dampen large oscillations
• Trip the interconnect

Key Characteristics

• Millisecond to second response time
• High speed situational awareness using synchrophasor
• Can support complex network topologies (i.e., mesh grids)
• Provide advanced notice of interconnection trip to operators
• Available customized HMI

*Both system (natural) and forced oscillations

Digital X - Ray

Internal component image is printed on a flexible plate and runs through a high resolution (~40µm) laser scanner which reads and digitizes the film. The digital X-ray image produced is viewed and enhanced using powerful image processing software. Contrast, brightness, filtration and zoom can be customized.

Default Detection

Digital X-Ray inspection is suitable to evaluate the condition of aluminum, porcelain or polymer main, arcing and moving components. The defects that can be detected include:

• Damaged or deformed parts: crack and bent components
• Missing or loose components
• Corrosion and inclusion
• Misalignment of components
• Nozzles / Barrier / Resin Insulation

Dynamic Contact Resistance Measurement

Dynamic Contact Resistance Measurement (DCRM) is conducted by injecting a Direct Current through the breaker. The voltage drop is measured when the breaker operates a close-open cycle at rated speed. The acquisition unit then calculates the resistance value. During a phase of the motion, arcing contacts are the only parts which touch, the condition of these contacts can be assess.

Default Detection

The comparison between the pattern reference and the measurement curve supports the condition of the arcing contacts and the breaker chamber moving parts assessment. Any change in dynamic/frictional characteristics of the circuit breaker immediately reflects as a change in the dynamic resistance signature.

DCRM fingerprint deviation indicates various defects including:

• Misalignment of moving parts
• Contact wipe of main and arcing contacts
• Erosion of arcing and main contact
• Mechanical integrity of various components
• Measurement of the arcing contact length

Vibration Monitoring

Any mechanical movement in equipment produces sounds and/or vibrations. The resulting signals are propagated to the external structure via various parts of the mechanism and through the interrupting medium. The accelerometers positioned on the external structure of the circuit breaker measure the vibration bursts. As the vibration fingerprints is highly repeatable for a healthy circuit-breaker, a change in dynamic/frictional characteristics immediately reflects a change in the vibration pattern and thus highlights a defect.

Mechanical Fault Detection

The main characteristic of vibration diagnostics is the detection of a change between a vibration fingerprints recorded during operation and the reference.

Typical problems indicated by deviation in the vibration pattern include:

• Over-travel of connecting rids
• Distortion of a drive shaft
• Release of a contact / frame / mobile mechanism
• Hydraulic/spring operating mechanism defect

Ultra High Frequency (UHF) Analysis

The monitoring of the Gas-Insulated Substation (GIS) insulation health through measurement of partial discharge is the most efficient and competitive solution to prevent potential high repair cost and long downtime.

Principal

Partial discharge is the source of electromagnetic waves in the range of ultra high frequency from 300 to 2000MHz. The signal goes along the GIS and is easily captured by the antenna. Both UHF internal or external sensors can be installed on any type of GIS up to 800kV. The system can monitor SF₆ and g³ filled equipment. The frequency spectrum and time analysis of the UHF signal assist supervision of commissioning, operation and maintenance.

The pattern shape supports accurate identification of default type including:

• Presence of particle
• Protrusion
• Coronas
• Free potential
• Insulator void