Pagsubaybay sa Temperatura ng Switchgear: Pag-install ng Fluorescence Fiber Optic Temperature Measurement

Panimula

Switchgear is critical electrical equipment in power systems, with bus bar connections, mga contact sa circuit breaker, and other components prone to heating during long-term operation. Fluorescence fiber optic temperature measurement technology, kasama ang mga natatanging pakinabang nito, provides a reliable solution for switchgear temperature monitoring.

Components of a Fluorescence Fiber Optic Temperature Measurement System

1. Fluorescence Fiber Optic Temperature Sensors: These core components are made from fluorescent materials that convert temperature information into fluorescence signals, enabling real-time temperature monitoring.
2. Fiber Optic Transmission Lines: Used to transmit fluorescence signals from sensors to the signal processing unit, featuring excellent insulation properties and electromagnetic interference resistance to ensure stable and reliable signal transmission.
3. Signal Processing Unit: Processes and analyzes received fluorescence signals, extracts temperature information, and transmits temperature data to monitoring systems or host computers through communication interfaces.
4. Monitoring and Display Unit: Displays real-time temperature values from various measurement points within the switchgear and includes alarm functionality. When temperatures exceed set thresholds, timely alarm signals alert maintenance personnel to take appropriate measures.

Pre-Installation Preparation

1. Tool Preparation: Prepare necessary installation tools, including fiber optic cutting tools.
2. Personnel Training: Ensure installation personnel understand the principles and installation procedures of fluorescence fiber optic temperature measurement systems, master techniques for routing, connecting, and securing optical fibers, and are familiar with safety precautions.
3. Installation Environment Inspection: Check the switchgear installation environment to ensure it meets the requirements for fluorescence fiber optic temperature measurement systems. The interior of the switchgear should be clean, tuyo, and free of dust, langis, at kahalumigmigan. Bukod pa rito, examine the cabinet’s internal layout to ensure sufficient space for installing wiring components.

Mga Detalyadong Hakbang sa Pag-install

1. Determining Installation Locations

   Based on the switchgear structure and electrical equipment layout, select appropriate temperature measurement points, typically including bus bar connections, mga contact sa circuit breaker, cable connectors, and other heat-prone areas, as well as other critical equipment within the switchgear. Sabay-sabay, plan the fiber optic routing path, avoiding parallel installation with high-current lines to reduce electromagnetic interference, and ensuring the fiber’s bending radius meets requirements.

2. Installing Fluorescence Fiber Optic Probes

   Install the fluorescence fiber optic probes at the determined measurement points. For areas such as bus bar connections, use specialized mounting fixtures to secure probes firmly to the surface of the object being measured, ensuring good thermal contact between the probe and the object. Sa panahon ng pag-install, take care to protect the probes from mechanical damage or contamination.

3. Laying Optical Fibers

   Following the planned routing path, lay optical fibers within the switchgear. Secure the fibers along cabinet walls or equipment surfaces, using cable ties or other fasteners to bind the fibers to internal structures or equipment. Exercise care not to apply excessive force that might damage the fibers. Sa panahon ng pag-install, avoid creating bends with radii smaller than specified, twisting, knotting, or other damaging configurations. Protect fibers from sharp objects that could scratch or compress them. For excess fiber sections, coil and secure them appropriately, ensuring the coil diameter exceeds the specified minimum bending radius and that the fibers are firmly secured to prevent loosening due to vibration or other factors.

4. Connecting Optical Fibers to Temperature Transmitters

   Connect the installed optical fibers to the fluorescence fiber optic temperature transmitters. Ang mga temperature transmitter ay karaniwang naka-install sa silid ng instrumento ng switchgear at nakakonekta sa mga optical fiber sa pamamagitan ng ST connectors o iba pang naaangkop na paraan ng koneksyon. Sa panahon ng koneksyon, tiyaking malinis at walang alikabok ang mga ST connector, pagsunod sa mga tamang pamamaraan upang maikonekta nang ligtas ang mga hibla sa transmitter, pag-iwas sa mga maling koneksyon o mga isyu sa misalignment.

5. Pag-install ng Temperature Transmitter

   I-install ang fluorescence fiber optic temperature transmitter sa silid ng instrumento ng switchgear. Maaaring kabilang sa mga paraan ng pag-install ang rail mounting o screw fixation, pagtiyak na ang mga transmiter ay matatag at matatag na naka-install, at naa-access para sa hinaharap na pagpapanatili at pagkukumpuni.

6. Pagkonekta ng Power at Communication Lines

   Ikonekta ang mga linya ng kuryente ng transmiter ng temperatura sa power supply ng switchgear, typically requiring a 24V DC power source, and ensure stable and reliable power supply. Sabay-sabay, connect the transmitter’s communication lines to monitoring systems or host computers as needed, enabling remote transmission and monitoring of temperature data.

7. Installing Monitoring and Display Units

   Install monitoring and display units in locations convenient for observation and operation, such as on the switchgear panel or in the control room. Connect these units to temperature transmitters via communication lines, ensuring temperature data is displayed accurately and in real-time on the monitoring interface, with alarm functions operating normally.

Post-Installation Commissioning and Considerations

1. System Commissioning

   Pagkatapos ng pag-install, commission the entire fluorescence fiber optic temperature measurement system. Verify normal signal transmission from fiber optic sensors, ensuring temperature data is accurately transmitted from sensors to signal processing units and correctly displayed on monitoring and display units. Bukod pa rito, set temperature alarm thresholds according to switchgear operational requirements and equipment temperature limits, ensuring the system issues timely alarm signals when temperatures are abnormal.

2. Calibration and Verification

   Calibrate the fluorescence fiber optic temperature measurement system using standard temperature sources or by comparison with other temperature measurement equipment of known accuracy, ensuring the system’s precision and reliability. Sa panahon ng commissioning, promptly troubleshoot and resolve any issues if abnormal temperature data or system faults are detected, pagtiyak ng normal na operasyon ng system.

3. Regular Maintenance and Inspection

   During switchgear operation, regularly maintain and inspect the fluorescence fiber optic temperature measurement system. Check the security of optical fibers, ensuring they have not loosened, been damaged, or been subjected to external interference; clean fiber surfaces and fluorescence fiber optic probes to prevent dust, langis, or other contaminants from affecting temperature measurement accuracy; inspect temperature transmitters and monitoring and display units to ensure normal operation; periodically calibrate the temperature measurement system to maintain accuracy. Bukod pa rito, observe temperature changes at measurement points within the switchgear, promptly identifying and addressing temperature abnormalities to ensure safe and stable switchgear operation.

Pag-aaral ng Kaso ng Pag-install

Sa isang switchgear renovation project sa isang substation, a fluorescence fiber optic temperature measurement system was successfully implemented. The project team first conducted a detailed assessment of the switchgear’s structure and operational status, identifying multiple critical temperature measurement points, including bus bar connections, mga contact sa circuit breaker, and cable connectors. Sa panahon ng pag-install, they strictly followed installation procedures, tinitiyak na ang fluorescence fiber optic probes ay nagpapanatili ng malapit na pakikipag-ugnayan sa mga sinusukat na bagay at maayos na pagruruta ng mga optical fiber upang maiwasan ang electromagnetic interference at mekanikal na pinsala. Pagkatapos ng pag-install, pagkomisyon, at pagkakalibrate, tumpak na sinusubaybayan ng system ang mga pagbabago sa temperatura sa iba't ibang mga punto ng pagsukat sa loob ng switchgear at naglabas ng mga napapanahong signal ng alarma. Sa pamamagitan ng sistemang ito, Maaaring subaybayan ng mga tauhan ng pagpapanatili ang mga kondisyon ng temperatura ng switchgear sa real-time, agarang pagtukoy at pagtugon sa mga abnormalidad sa temperatura na dulot ng mahihirap na kontak at iba pang isyu, epektibong maiwasan ang mga pagkabigo ng kagamitan at pagkawala ng kuryente, at pagpapahusay sa pagiging maaasahan ng suplay ng kuryente at kaligtasan sa pagpapatakbo ng substation.

Konklusyon

Ang application ng fluorescence fiber optic temperature measurement technology sa switchgear temperature monitoring ay nagbibigay ng matatag na proteksyon para sa ligtas na operasyon ng mga de-koryenteng kagamitan. Ang proseso ng pag-install ay dapat na mahigpit na sumunod sa mga pamantayan, na may masusing paghahanda, naaangkop na pagpili ng mga lokasyon ng pag-install, maingat na pagruruta ng hibla, tamang koneksyon ng kagamitan, at detalyadong pagkomisyon at pagkakalibrate. Sa pamamagitan ng regular na pagpapanatili at inspeksyon, ang pang-matagalang matatag na operasyon ng fluorescence fiber optic na mga sistema ng pagsukat ng temperatura ay maaaring matiyak, pagbibigay ng napapanahon at tumpak na pagsubaybay sa mga pagbabago sa temperatura ng switchgear, pag-iwas sa mga pagkabigo at aksidente ng kagamitan, at pagtatatag ng matatag na pundasyon para sa ligtas at maaasahang operasyon ng mga sistema ng kuryente.

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