The advantages of point type fiber optic temperature sensors-INNO

As vantagens dos sensores de temperatura de fibra óptica tipo ponto

The fiber optic temperature measurement system is mainly completed using fluorescent optical fibers. The sensors are isolated under high voltage and the absorbed optical signals are transmitted for temperature monitoring of the measured object. The consistency and stability of the optical fibers have reached international advanced levels, and the temperature measurement accuracy is high.

Fluorescent fiber optic temperature sensors have the characteristics of intrinsic safety, sem interferência eletromagnética, stable monitoring, precisão precisa da medição de temperatura, velocidade de resposta rápida, alta sensibilidade, resistência de alta pressão, resistência à corrosão, ability to work in extreme measurement environments, and lower total cost compared to fibra óptica distribuída temperature measurement and fiber optic gratings.

	Medição de temperatura de fibra óptica fluorescente	Wireless or infrared temperature measurement
Temperature measurement method	Contact temperature measurement	Contact or non-contact temperature measurement
Segurança	Non electrified, não metálico, à prova de umidade, à prova de explosão, with no inherent safety hazards	The probe contains a charged body and battery, which poses a risk of explosion
estabilidade confiabilidade	estabilidade confiabilidade	Easy to electromagnetic interference and poor reliability; RF signals are easily blocked
Precisão	Installed at the contact point, without temperature deviation, optical measurement, alta precisão	The installation position is far from the contact, causing temperature deviation and low accuracy
Temperature measurement method	Tempo real, on-line	Tempo real, on-line
Alarm positioning	Posicionamento preciso	Posicionamento preciso
Installation and maintenance	The temperature measuring probe is very small and can be directly installed on the measured point	The probe has a large volume, and it is inconvenient to maintain the power outage when replacing the battery
vida útil	No consumable components, longa vida útil	Depends on probe RF power consumption and battery capacity
Economy	Economically cost-effective and cost-effective	Alto custo, requer manutenção regular, low cost performance

The application range of point type fluorescent fiber optic temperature sensors is wide, with customers covering various substations and large petroleum and petrochemical enterprises around the world. The online fiber optic temperature monitoring of high-voltage transmission line joints and switchgear circuit breaker contacts can meet the needs of temperature monitoring systems in the large power industry, and develop and customize cost-effective fiber optic temperature monitoring systems for major enterprises nationwide.

By utilizing the excellent insulation and high-voltage isolation performance of point type fiber optic sensors for temperature measurement, FJINNO independently developed sensor de temperatura de fibra óptica fluorescente can be used for temperature monitoring during the operation of high-voltage equipment in different environments:

1. Contact and contact measurement of high-voltage switchgear

2. Temperature measurement of dry-type transformers

3. Temperature measurement of oil immersed transformers

4. High voltage busbar joint

5. High voltage cable joints

6. Knife switch

7. Oleodutos e gasodutos, flammable and explosive tank bodies, etc..

Point type fiber optic temperature measurement system

The point type sensor de temperatura de fibra óptica converts the temperature information of the monitored area into optical signals and transmits them to the fluorescence fiber optic thermometer. The probe of the fluorescence fiber optic sensor independently developed by FJINNO is the most advanced fluorescence fiber optic thermometer in China, which can be directly installed on the measured point, with accurate temperature measurement and fast response. The point type fiber optic thermometer receives real-time optical signals carrying temperature information sent by fluorescent fiber optic temperature sensors, and demodulates them into temperature values through the principle of fluorescent fiber optic temperature measurement, achieving temperature measurement of the monitored area. The monitoring system can set an alarm signal when the actual temperature measurement value is greater than the alarm set value, and can set the temperature control device to trip and other device settings. The point type fiber optic thermometer can work independently on a single channel, or can be used in a network with multiple multi-channel fiber optic temperature sensor systems.

The point type fiber optic temperature measurement system is a distributed temperature measurement system consisting of a fluorescent fiber optic temperature sensor probe, um sensor de temperatura de fibra óptica (fiber optic temperature transmitter module), a fluorescence transmission fiber optic, a monitoring host display screen, etc.. The fiber optic temperature sensor demodulates the optical signal of the temperature information carried by the fiber optic temperature sensor probe, converts it into a temperature value, and then uploads it to the monitoring host through the fluorescence fiber optic demodulator to complete the temperature monitoring of the measured part. The fiber optic device and high-temperature resistant insulation material are used as the fiber optic temperature measurement probe, and single-mode fiber optic is used to achieve long-distance signal transmission. Special signal demodulation and filtering algorithms are used to improve the measurement accuracy and stability of the product. Low product cost, strong anti vibration and anti electromagnetic interference capabilities, alta precisão, velocidade de resposta rápida, alta resolução, unrestricted transmission distance, e escalabilidade. It can be used in situations such as difficult power supply, vedação, alta tensão, campo magnético forte, microwave field, radiação nuclear, estrito à prova de explosão, impermeável, anti-corrosion, small spaces or small workpieces.

Application of point type fiber optic temperature sensor in high-voltage switchgear equipment

O sensor de fibra óptica é instalado na junção do contato estático e do barramento. Luminárias especiais com alto isolamento, alta condutividade térmica, alta elasticidade, resistência a altas temperaturas, e resistência à corrosão são selecionados para a fixação da cabeça sensora. The optical fibers are routed along the corners of the cabinet and the weak current cable trough, ou amarrados com laços de isolamento com os fios secundários dentro do gabinete. This monitoring system has comprehensive monitoring and alarm functions, ensuring that high-voltage equipment is always in a monitored state and completely unaffected by human factors. Quando ocorre um alarme, o sistema emite sinais de alarme sonoros e luminosos correspondentes, and the on duty personnel have sufficient time to take corresponding measures. Isto é particularmente importante para evitar acidentes ou causar incêndios.

The application of point type fiber optic sensing technology in temperature monitoring of high-voltage switchgear in transmission systems has achieved real-time online temperature detection at key equipment points (contatos, juntas de cabos). Ao mesmo tempo, special optical fibers with high voltage levels are used, as optical fibers have characteristics such as electrical insulation, segurança intrínseca, e imunidade a interferência eletromagnética, meeting the requirements of high-voltage power switchgear equipment for the voltage resistance level of optical fibers.

The application of point type fiber optic temperature measurement system effectively improves the safety and reliability of power supply in the power grid, and has certain promotion value in the same industry as a measurement method.

The point type fiber optic online temperature measurement system for high-voltage switchgear uses online temperature monitoring to monitor the operating temperature of electrical equipment, especially the temperature at hot spots, which is an important means of fault warning and accident prevention. It can detect signs of heating at equipment joints inside the switchgear in advance and prevent fault events caused by temperature rise.