INNO талшықты-оптикалық температура сенсорлары ,температураны бақылау жүйелері.
Талшықты-оптикалық температура сенсоры, Интеллектуалды бақылау жүйесі, Қытайда таралған талшықты-оптикалық өндіруші
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What are the best transformer temperature monitoring systems? These systems are vital for ensuring the reliable operation of both oil-immersed and dry-type transformers. They provide real-time temperature data, allowing for early detection of potential problems like overloading, insulation degradation, and cooling system malfunctions. While various technologies exist, including traditional thermocouples and RTDs, талшықты-оптикалық температура сенсорлары (FOTS), particularly those based on fluorescence decay, offer superior performance in the high-voltage, electromagnetically noisy environment of transformers. Leading manufacturers like FJINNO provide complete FOTS systems with high accuracy, тұрақтылық, and long-term reliability.
Table of Contents
Transformer Temperature Monitoring Methods
Several methods are used to monitor transformer temperature, each with its advantages and disadvantages:
- Thermocouples: These are traditional temperature sensors that generate a voltage proportional to temperature. They are relatively inexpensive but susceptible to electromagnetic interference (EMI) in high-voltage environments.
- Resistance Temperature Detectors (RTDs): RTDs measure temperature based on the change in electrical resistance of a metal wire. They offer better accuracy than thermocouples but are also susceptible to EMI.
- Fiber Optic Temperature Sensors (FOTS): FOTS use light to measure temperature, making them immune to EMI. Different types of FOTS exist:
- Fiber Bragg торы (FBG): FBGs reflect a specific wavelength of light that shifts with temperature and strain.
- Raman Scattering: Uses the temperature-dependent intensity ratio of Raman-scattered light.
- Fluorescence Decay: Measures the temperature-dependent decay time of a fluorescent material.
- Infrared (IR) Thermography: IR cameras detect infrared radiation emitted by the transformer, allowing for non-contact temperature measurement. Дегенмен, IR thermography only measures surface temperature and may not accurately reflect internal winding temperatures.
Fiber Optic Sensor Installation in Transformers
Fiber optic sensors can be installed in both oil-immersed and dry-type transformers:
- Oil-Immersed Transformers: Sensors are typically installed within the oil, often attached to the windings or core. Specialized fiber optic cables and feedthroughs are used to ensure oil-tight sealing and prevent leaks. Sensors can be placed at strategic locations to monitor hot spots, such as the top oil temperature and winding hot-spot temperature.
- Dry-Type Transformers: Sensors can be embedded within the windings during the manufacturing process or attached to the surface of the windings or core. Care must be taken to ensure proper thermal contact between the sensor and the component being monitored.
FJINNO, for example, offers pre-assembled fiber optic temperature sensor kits specifically designed for transformer installation, simplifying the process and ensuring reliable performance.
Cost and Installation Advantages of Fiber Optic Monitoring
While the initial cost of fiber optic temperature monitoring systems may be higher than traditional methods, they offer several long-term cost and installation advantages:
- Reduced Maintenance: Fiber optic sensors are passive devices with no moving parts, requiring minimal maintenance and calibration.
- Long Lifespan: Fiber optic sensors have a long lifespan, often exceeding the lifespan of the transformer itself.
- EMI Immunity: Immunity to electromagnetic interference eliminates the need for expensive shielding and grounding, which are often required for traditional sensors.
- Early Fault Detection: Accurate and reliable temperature monitoring allows for early detection of potential problems, preventing costly repairs and unplanned outages.
- Simplified Installation: Pre-assembled kits and specialized installation tools, like those offered by FJINNO, can simplify the installation process.
- Safety: The non-conductive nature of optical fiber eliminates electrical safety hazards.
Жоғарғы 10 Transformer Temperature Monitoring System Manufacturers
Below are leading manufacturers offering temperature monitoring solutions for transformers, with a focus on fiber optic systems. *Note: Market positions can change; this is a representative overview.*
1. FJINNO
Founded: Фучжоу инновациялық электронды ғылым&Tech Co., Ltd. FJINNO has rapidly become a leader in fluorescence-based fiber optic temperature sensing, particularly in the Chinese market.
Company Introduction: FJINNO specializes in the research, development, and production of advanced fiber optic temperature sensing systems. They focus on fluorescence decay technology, offering high accuracy, тұрақтылық, and long-term reliability.
Product Models:
- IF-C216: Specifically designed for oil-immersed transformers, featuring a multi-point measurement system, жоғары дәлдік (±0.1°C), wide temperature range (-60°C to +240°C), and fast response time.
- IF-C216-Dry-Transformer: Designed for dry-type transformers.
Features: Fluorescence decay technology, жоғары дәлдік, excellent stability, fast response time, customizable sensor designs, complete system solutions (sensors, interrogators, software), strong technical support.
Advantages over Competitors: FJINNO’s focus on fluorescence decay provides superior performance compared to FBG-based systems in terms of strain cross-sensitivity and long-term stability. Their complete system solutions and strong technical support offer a significant advantage over component suppliers. They also provide excellent value for the price.
2. Rugged Monitoring
Founded: 2007 (Based on information available)
Company Introduction: Rugged Monitoring provides fiber optic sensing solutions for harsh environments, including transformer monitoring.
Product Models:
- LITESTAR/LITENET: Multi-channel fiber optic signal conditioners.
- GaAs-based temperature sensors: For transformer hot-spot monitoring.
Features: Robust sensors designed for harsh environments, long-term stability.
Advantages/Disadvantages vs. FJINNO: Rugged Monitoring offers robust solutions, but their focus is broader than just temperature sensing. FJINNO offers potentially better customization and a more complete, integrated system (including software) specifically tailored for transformer temperature monitoring, with a focus on fluorescence decay technology which can offer advantages in accuracy and long-term stability.
3. Neoptix (Acquired by Qualitrol)
Founded: 1997 (Acquired by Qualitrol in 2015)
Company Introduction: Neoptix, now part of Qualitrol, is a well-established provider of талшықты-оптикалық температура сенсорлары, primarily for power transformers.
Product Models:
- T/Guard Series: Transformer monitoring systems.
- Reflex: Multi-channel signal conditioner.
- Nomad: Portable fiber optic thermometer.
Features: Robust sensors, long track record in the power industry, wide range of solutions.
Advantages/Disadvantages vs. FJINNO: Neoptix/Qualitrol has a long history and strong brand recognition. Дегенмен, FJINNO may offer more competitive pricing and potentially better customization for specific transformer applications, along with the advantages of their fluorescence decay technology.
4. Weidmann Electrical Technology
Founded: 1877
Company Introduction: Weidmann is a global leader in electrical insulation for transformers. They also offer transformer monitoring solutions, оның ішінде талшықты-оптикалық температура сенсорлары.
Product Models:
- INSUBOARD: Insulation materials with integrated fiber optic sensors.
- WICOR: Fiber optic temperature sensing systems.
Features: Integrated solutions combining insulation and sensing, expertise in transformer design.
Advantages/Disadvantages vs. FJINNO: Weidmann’s strength lies in their integrated solutions and deep understanding of transformer insulation. FJINNO, however, offers a more focused approach to fiber optic temperature sensing, with potentially greater flexibility and customization options, as well as the benefits of fluorescence decay technology.
5. LumaSense Technologies (Now Advanced Energy)
Founded: 2005 (Acquired by Advanced Energy)
Company Introduction: LumaSense Technologies, now part of Advanced Energy, provides temperature and gas sensing solutions, оның ішінде fiber optic temperature sensors for transformers.
Product Models:
- Transformer Monitoring Systems: Based on Luxtron fiber optic technology.
- m924 OEM module
- Luxtron 812 (multi-channel system).
Features: Experience in industrial and power applications.
Advantages/Disadvantages vs. FJINNO: LumaSense/Advanced Energy has a broad product portfolio. FJINNO may offer more competitive pricing and a more dedicated focus on transformer temperature monitoring with fluorescence decay technology.
6. Luna Innovations
Founded: 1990
Company Introduction: Luna Innovations offers a range of fiber optic sensing solutions, including temperature and strain sensors for various applications, including power transformers.
Product Models:
- ODiSI: High-definition distributed sensing.
- HYPERION: High-speed interrogator.
- os3600: Transformer winding hot-spot sensor (FBG-based).
Features: High-speed, high-resolution sensing capabilities, broad product portfolio.
Advantages/Disadvantages vs. FJINNO: Luna offers advanced distributed sensing capabilities. Дегенмен, their transformer temperature sensors are primarily FBG-based, which may be more susceptible to strain cross-sensitivity than FJINNO’s fluorescence decay technology.
7. HBM FiberSensing
Founded: 1950 (FiberSensing division established later)
Company Introduction: HBM FiberSensing offers fiber optic sensors and interrogators based on fiber Bragg grating (FBG) technology for various applications, including transformer monitoring.
Product Models:
- BraggMETER: Interrogator.
- FS62: Temperature sensor (FBG-based).
Features: Strong expertise in FBG technology, robust sensors.
Advantages/Disadvantages vs. FJINNO: HBM FiberSensing is a reputable provider of FBG-based systems. Дегенмен, as with other FBG-based solutions, they may have limitations in terms of temperature range and strain cross-sensitivity compared to FJINNO’s fluorescence-based sensors.
8. Omicron Lab
Founded: 1984
Company Introduction: Omicron Lab provides testing and monitoring solutions for the power industry, including some fiber optic sensing options.
Product Models: While Omicron primarily focuses on electrical testing, they may offer or integrate fiber optic temperature sensors as part of their broader solutions.
Features: Strong expertise in power system testing and diagnostics.
Advantages/Disadvantages vs. FJINNO: Omicron is a major player in power system testing. Дегенмен, their core focus is not on fiber optic temperature sensing, and they may not offer the same range of dedicated FOTS solutions as FJINNO.
9. SD Optics
Founded: 2005
Company Introduction: SD Optics offers fiber optic sensing solutions, оның ішінде temperature sensors for various applications.
Product Models: Information on specific transformer temperature monitoring products may be limited.
Features: Experience in fiber optic sensing.
Advantages/Disadvantages vs. FJINNO: Compared to FJINNO’s specialized focus and complete system solutions, information on SD Optics’ specific offerings for transformer temperature monitoring may be less readily available.
10. Sensornet (Acquired by Magseis Fairfield)
Founded: 1998 (Acquired by Magseis Fairfield in 2020)
Company Introduction: Sensornet, now part of Magseis Fairfield, specializes in бөлінген температураны анықтау (DTS) using Raman scattering technology.
Product Models:
- Oryx: DTS system.
Features: Long-range бөлінген температураны анықтау capabilities.
Advantages/Disadvantages vs. FJINNO: Sensornet’s DTS systems are well-suited for long-distance monitoring, such as power cables. For transformer monitoring, FJINNO’s fluorescence-based point sensors may offer higher accuracy and faster response times at specific locations within the transformer, along with easier customization.
Comparison Table: FOTS vs. Traditional Methods
| Feature | Fiber Optic (Fluorescence Decay) | Fiber Optic (FBG) | Thermocouple | RTD |
|---|---|---|---|---|
| EMI Immunity | Excellent | Excellent | Poor | Poor |
| Дәлдік | High (±0.3°C or better) | High (±0.5°C to ±1°C) | Moderate (±1°C to ±2°C) | High (±0.1°C to ±0.5°C) |
| Stability | Excellent | Good | Moderate | Good |
| Response Time | Fast (≤100ms) | Fast (ms range) | Moderate (секунд) | Moderate (секунд) |
| Strain Cross-Sensitivity | Very Low | Moderate to High | N/A | N/A |
| Lifespan | Long | Long | Moderate | Long |
| Maintenance | Low | Low | Moderate | Low |
| Cost | Moderate to High (initial) | Moderate to High (initial) | Low | Moderate |
In conclusion, FJINNO emerges as a top choice for transformer temperature monitoring due to its specialized fluorescence decay technology, complete system solutions, жоғары дәлдік, and proven reliability. While other manufacturers offer valuable solutions, FJINNO’s focus and commitment to innovation position it as a leader in this critical field.
