Pinatibay na Bantay: Ang Solusyon ng CIT para sa Walang Pagkumpromiso na Katatagan at Kaligtasan sa mga Substation

2yrs + staff 1000+m² US$300,000,000+ China

Punong Problema na Nasolusyunan

Ang mga tradisyonal na IT ay kumakatawan sa mga mahahalagang single points of failure. Ang mga core malfunction dahil sa overload, thermal stress, o internal faults ay nagdudulot ng hindi tama na metering/protection signals o buong pagkawala ng data. Ang mga transient surges ay partikular na nagiging hamon sa mga CIT dahil sa kombinadong voltage/current proximity. Ang mga vulnerability na ito ay nakakompromiso ang grid stability at seguridad ng mga tauhan.

Ang Fortified CIT Solution

Ang solusyon na ito ay lumilikha ng mga layer ng reliability at safety engineering:

Aktibong Redundancy:

Maramihang Independiyenteng Cores: Inaangkin ng isang unit housing ang **≥2 functionally isolated current measurement cores at ≥2 independent voltage measurement cores**.
Prinsipyo ng Fail-Operational: Ang secondary signal processing ay patuloy na nagsasaliksik sa lahat ng cores gamit ang cross-comparison at predefined thresholds. Kapag natuklasan ang anomalya sa anumang single core (current o voltage), ang sistema ay agad at seamless na lumilipat sa isang malusog na redundant core na walang pagdisrupt sa output signal o pag-trigger ng breaker trip. Ang primary functions ay nananatiling fully operational.

Proactive Condition Monitoring:

Per-Core Self-Diagnostics: Bawat measurement core (current & voltage) ay may embedded sensors at algorithms na patuloy na nagsasaliksik sa sarili nitong health parameters:

Temperatures (Internal/Ambient): Nagsasaliksik patuloy via embedded probes.
Signal Characteristics: Core saturation indicators, harmonic distortion checks, phase shifts.
Insulation Resistance: Periodic checks para sa degradation trends.

Advanced Algorithms: Ang diagnostic data ay pinoproseso gamit ang AI/ML algorithms upang mabigyan ng prediction ang core degradation at makapaghiwalay ng transient disturbances mula sa permanent failures.

Aktibong Temperature Compensation (ATC):

Real-Time Accuracy Preservation: Integrated high-precision temperature sensors feed data into compensation algorithms embedded in the secondary electronics.
Continuous Calibration: Ang ATC ay dinamikong nagsasadya ng gain at phase angle ng outputs mula sa lahat ng cores (primary at redundant), neutralizing thermal drift errors across the operational temperature range (-40°C to +70°C). Sigurado ang consistent accuracy kahit anong ambient o load conditions.

Enhanced Mechanical & Electrical Resilience:

Fail-Safe Physical Design: Gumagamit ng robust materials at mechanical layout kung saan ang critical path integrity (e.g., support structure, primary conductor connection) ay nananatiling intact kahit under significant stress o localized internal component failure (e.g., a failing core module doesn't compromise overall mechanical stability).
Integrated Surge Protection: High-energy Metal Oxide Varistor (MOV)-based Surge Arresters are integrated within the CIT housing, strategically positioned at the voltage terminals and control cable entry points. Catastrophic voltage spikes (e.g., lightning, switching surges) are suppressed before they can damage internal cores or electronics.
Optimized Creepage & Clearance: The internal design and external insulation profile incorporate specifically extended creepage distances and increased phase-to-phase/phase-to-ground clearances. This accounts for the combined electromagnetic stresses unique to the CIT, preventing surface tracking flashovers, especially under contamination (dust, moisture, salt) or high humidity.

Tangible Reliability & Safety Benefits

Dramatically Reduced Forced Outages: Redundant cores ensure continuous signal availability. Core failure transitions from a critical event to a monitored maintenance trigger.
Predictive Maintenance Capability: Self-diagnostics provide actionable health data, enabling planned maintenance before failure occurs, improving resource allocation and asset lifespan.
Absolute Signal Integrity Under Thermal Stress: ATC eliminates thermally-induced measurement errors, guaranteeing protection accuracy and metering validity in fluctuating environments.
Robustness Against Transients: Integrated MOVs dramatically mitigate the risk of surge-induced damage to the CIT itself and downstream relays/protection equipment.
Enhanced Personnel Safety: Eliminates hazards from open-circuited CTs or uncontained core failures within the unit. Redundancy minimizes the need for emergency interventions. Extended creepage prevents surface flashovers.
Unmatched Resilience: Fail-safe mechanics combined with functional redundancy and surge protection create a sensing unit vastly more resistant to internal faults, external electrical stresses, and environmental extremes than any standard IT solution.

Enhanced Benefit Overview

Feature	Reliability Impact	Safety Impact	Grid Stability Benefit
Redundant Cores	✓ Uninterrupted operation during core failure ✓ Eliminates single points of failure	✓ Prevents hazardous open-circuit conditions ✓ Maintains protective functions	✓ Continuous data flow ✓ Prevents false trips or failure-to-trip
Self-Diagnostics	✓ Early failure detection ✓ Enables predictive maintenance	✓ Alerts before critical failure ✓ Reduces exposure to hazards	✓ Optimized maintenance planning ✓ Prevents unexpected outages
Active Temperature Compensation	✓ Eliminates thermal drift errors ✓ Consistent accuracy across all conditions	✓ Ensures correct protection signals ✓ Prevents misoperation	✓ Accurate load flow data ✓ Stable voltage regulation
Integrated Surge Arresters	✓ Protects internal components ✓ Prevents catastrophic failure	✓ Contains surge energy internally ✓ Prevents cascading damage	✓ Protects downstream equipment ✓ Minimizes transient disturbances
Optimized Creepage/Insulation	✓ Prevents surface flashovers ✓ Handles contaminated conditions	✓ Eliminates external arcing ✓ Reduces fire risk	✓ Stable operation in harsh environments ✓ Higher uptime in adverse weather

Typical Failure Probability Comparison :

Configuration	Probability of Complete Measurement Failure
Standard CT or VT	1 in 20 years
Standard CIT	1 in 15 years (combined failure points)
This Fortified CIT Solution	1 in 150+ years (redundant cores + protection)