Plug-and-Play CT Module: A Game-Changing Solution for Fast GIS Current Transformer Maintenance
Plug-and-Play CT Module Rapid Replacement Solution: Revolutionizing Efficient Maintenance for GIS Current Transformers
In high-reliability power scenarios like nuclear power plants and data centers, every minute of equipment downtime can mean significant economic losses or safety hazards. When traditional GIS current transformers (CTs) fail, the entire gas compartment must be depressurized and isolated for replacement, a process taking several days. This solution utilizes an innovative plug-and-play CT module design to achieve a 90% reduction in maintenance time, addressing the core operational challenge in GIS system maintenance.
Key Technical Highlights
- Ultra-Fast Installation/Removal - Quick-Release Metal-Sealed Bellows Interface
- Modular CT gas chamber interface enables physical isolation; removal does not require depressurization of the main GIS gas compartment.
- Metal-sealed bellows structure ensures permanent elasticity and insulation performance within a range of -40°C to 105°C.
- Dedicated hydraulic separation tools enable damage-free separation of gas-tight surfaces; full removal/installation process takes <120 minutes (vs. ~72h for traditional solutions).
- Plug-and-Play Operation - Calibration-Free EEPROM Technology
- Industrial-grade AT24C512 chips embedded in CT secondary windings pre-store calibration parameters (linearity compensation ±0.1%, phase compensation angle <2 arcminutes).
- Automatic matching with GIS measurement/control units upon connection, eliminating traditional current ratio/phase error verification steps.
- Supports 30,000 read/write cycles with a >25-year data retention period.
- Field Verification - Portable Calibration System
- Handheld injection tester outputs 0.5~5000A adjustable current (Class 0.05 accuracy), meeting IEC 61869-2 testing requirements.
- Automatic comparison of operational parameters against EEPROM reference values; accuracy verification completed in <30 minutes.
- Bluetooth transmission of reports to operation & maintenance (O&M) platforms for generation of digital maintenance records (ISO 55001 compliant).
Application Scenario Value
|
Scenario |
Traditional Solution Pain Point |
Value of This Solution |
|
Nuclear Power Plant |
Shutdown/refueling outage losses > $2 million/day |
Saves > $1.8 million per maintenance event |
|
Data Center |
Power outage causing IDC service level agreement (SLA) breaches |
Enables Tier IV continuous power supply |
|
Urban Power Grid |
Load transfer increases systemic risk |
Avoids chain-fault risks in 500kV power grids |
Core Advantages
- 90% Faster Fault Recovery: Reduced from an average of 72 hours to under 7 hours (including testing).
- Zero Planned Outages: GIS main body remains energized during operation, eliminating load loss.
- 60% Lower O&M Costs: Reduced need for lifting equipment/specialized personnel.
- Traceable Maintenance: Generates digital calibration reports for every maintenance action (ISO 55001 compliant).
Case Study: At a nuclear power base implementing this solution, the GIS average annual fault downtime dropped from 87 hours to 0.8 hours.
