Glasfaser-Temperaturüberwachungssystem für Trockentransformatoren

A major power facility utilizes high-voltage dry type transformers as core power supply equipment. Since dry type transformers rely on air convection for cooling, accurate monitoring of winding hot spot temperatures proved challenging. Traditional PT100 sensors cannot directly contact high-voltage windings, creating temperature measurement blind spots and potential safety risks.

Unsere Lösung

We deployed a Glasfaser-Temperaturüberwachungssystem to achieve precise temperature control through the following implementation:

Installationsprozess

Fiber optic temperature sensors embedded directly into transformer winding hot spot areas
Precise positioning of fiber probes at locations most prone to high temperatures
Professional cable routing ensuring no interference with transformer heat dissipation
Verbindung zu einem intelligenten Temperaturüberwachungsgerät zur Datenerfassung in Echtzeit

Technische Merkmale

Eigensicher: Glasfasermaterial sorgt für elektrische Isolierung, Ermöglicht den direkten Kontakt mit Hochspannungswicklungen
Überlegene EMI-Immunität: Unbeeinflusst von den starken elektromagnetischen Feldern des Transformators
Hohe Messgenauigkeit: Direkte Hot-Spot-Temperaturmessung mit einer Genauigkeit von ±1℃
Langzeitstabilität: Hitzebeständig bis 180 °C mit einer Lebensdauer von mehr als 100 % 20 Jahre

Ergebnisse & Vorteile

Das System hat seit seiner Inbetriebnahme bemerkenswerte Ergebnisse geliefert:

Echtzeitüberwachung: 24/7 Kontinuierliche Überwachung der Wicklungs-Hotspot-Temperatur mit sekundengenauen Datenaktualisierungen
Vorwarnung: Automatische Alarme bei Temperaturanomalien, Erkennen potenzieller Fehler 48 Stunden im Voraus
Intelligente Steuerung: Automatischer Lüfterstart/-stopp basierend auf der Temperatur, erreichen 15% Energieeinsparungen
Verlängerte Lebensdauer: Eine präzise Temperaturregelung verhindert Überhitzung und Alterung, Verlängerung der Gerätelebensdauer durch 30%
Keine Ausfallzeiten: No unplanned outages due to temperature issues in the first year of operation

Customer Testimonial

“The fiber optic temperature monitoring system enables us to directly monitor transformer winding hot spots for the first time. Temperature data is accurate and reliable. The system installation was straightforward, operation is stable, significantly improving our equipment management and power supply reliability. This has been a highly successful technical upgrade.”

— Project Manager

Leistungsvergleich

Metrisch	Traditional PT100	Glasfasersystem
Messort	Winding surface/enclosure	Internal winding hot spot
Messgenauigkeit	±2-3℃	±1℃
EMI-Immunität	Susceptible to EMI	Vollständige Immunität
Hochspannungsisolierung	Requires complex insulation treatment	Natural insulation
Reaktionsgeschwindigkeit	3-5 Minuten	<10 Sekunden
Lebensdauer	5-8 Jahre	20+ Jahre

Installation Gallery

Schritt 1: Kabelführung

Fiber optic cables are carefully routed into the transformer winding area, ensuring optimal positioning for accurate temperature measurement.

Schritt 2: Sensor Positioning

Temperature sensors are precisely installed at critical hot spot locations within the epoxy-cast windings.

Schritt 3: Probe Fixation

Fiber optic probes are securely mounted using specialized fixtures to ensure long-term stability and reliable contact with winding surfaces.

Schritt 4: Systemintegration

All sensors are connected to the central monitoring unit, enabling comprehensive real-time temperature tracking across all critical points.

Wichtige technische Spezifikationen

Systemkomponenten

Faseroptische Sensoren: Fluorescence-based temperature measurement technology
Temperaturbereich: -40℃ to 180℃
Messkanäle: Bis zu 16 channels per monitoring device
Kommunikationsprotokoll: Modbus RTU/TCP, SCADA compatible
Stromversorgung: AC 220V ±10% or DC 110V/220V
Schutzklasse: IP54 (monitoring device enclosure)

Alarm Functions

Mehrstufige Temperaturalarme (Warnung, over-temperature, Reise)
Temperature rise rate monitoring
Sensor fault detection
Historical data logging and analysis
Remote notification via email/SMS

Application Industries

This fiber optic temperature monitoring solution is ideal for:

Power Generation Plants: Generator step-up transformers and auxiliary transformers
Rail Transit Systems: Traction transformers in metro and light rail networks
Wind & Solar Farms: Renewable energy converter transformers
Industrieanlagen: Manufacturing plants and processing facilities
Rechenzentren: UPS and power distribution transformers
Gewerbebauten: High-rise building electrical systems

Why Choose Fiber Optic Monitoring?

Advantages Over Traditional Methods

Direkte Hot-Spot-Messung: Unlike PT100 sensors that measure external temperatures, fiber optic sensors can be embedded directly into windings for true hot spot monitoring.

No Electrical Interference: Being non-conductive, fiber optic sensors eliminate concerns about electrical breakdown, grounding issues, or signal interference in high-voltage environments.

Explosionsgeschütztes Design: With no electrical components at the sensing point, fiber optic systems are intrinsically safe for use in hazardous locations.

Lightning Protection: Non-metallic fiber optic cables are immune to lightning strikes and electrical surges that can damage conventional wiring.

Wartungsfreier Betrieb: Solid-state sensing technology with no moving parts ensures decades of reliable operation without calibration or replacement.

Investment Return Analysis

Kosteneinsparungen

Avoided Downtime: Preventing one transformer failure saves $50,000-$500,000 in emergency repairs and lost revenue
Längere Lebensdauer der Ausrüstung: 30% life extension on a $200,000 transformer equals $60,000 in deferred capital costs
Energy Optimization: 15% cooling energy savings translates to $3,000-$8,000 annually for medium-sized installations
Insurance Benefits: Proactive monitoring may qualify for reduced insurance premiums

Typische Amortisationszeit

Based on average installation costs and documented benefits, most customers achieve full ROI within 18-24 months of system deployment.

Einhaltung & Zertifizierungen

IEC 60076 – Power Transformers Standard
IEEE C57.12.01 – Dry-Type Transformers Standard
CE-Zertifizierung – Europäische Konformität
Railway Certification – IN 50155 (for rail transit applications)
ATEX/IECEx – Explosion-proof certification (optional)
ISO 9001 – Qualitätsmanagementsystem

Next Steps

Interested in implementing a fiber optic temperature monitoring solution for your dry type transformers? Our team of experts is ready to:

Conduct a free site assessment of your transformer installation
Design a customized monitoring solution based on your specific requirements
Provide detailed technical specifications and system layout drawings
Offer competitive pricing with flexible payment terms
Deliver comprehensive training and ongoing technical support

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