Online temperature monitoring device for fluorescent fiber optic temperature measurement system of circuit breaker contacts

Online temperature monitoring device for fluorescent fiber optic temperature measurement system of circuit breaker contact arm contact

The fluorescent fiber optic temperature measurement system uses fluorescent fiber optic to transmit temperature information, solving the problem of high and low voltage isolation. It can monitor the health status information of circuit breakers online and provide a very important means for early detection of isolation switch faults. The purpose is to overcome the shortcomings of traditional temperature measurement techniques, FJINNO fiber optic temperature measurement host provides online temperature measurement circuit breakers and their fiber optic temperature measurement solutions that can achieve temperature detection in the high-voltage area of circuit breakers, with strong stability, good reliability, and high safety.

The reasons for the temperature increase of circuit breakers in high-voltage switchgear

The temperature measurement of high-voltage switchgear mainly measures the comprehensive temperature inside the cabinet, which to a large extent wastes equipment resources; After long-term observation and testing, it was found that the temperature inside the high-voltage switchgear is mainly caused by poor contact between the dynamic and static contacts of the high-voltage circuit breaker, long-term operation of high current, high voltage, and aging of the contacts, which leads to an increase in contact resistance, resulting in long-term heating, high contact temperature, and even causing accidents such as burning of the switchgear. So, comprehensive temperature measurement plays a role to a certain extent, but relatively speaking, the invested resources and returns cannot be directly proportional, wasting equipment resources.

The FJINNO circuit breaker fluorescent fiber optic online temperature measurement system can monitor the contact temperature of the high-voltage circuit breaker inside the high-voltage switchgear in a targeted and real-time manner, reduce equipment investment, and ensure the normal operation of the high-voltage switchgear.

Fluorescent fiber optic online temperature measurement system for circuit breakers

The fluorescent fiber optic online temperature measurement system for circuit breakers includes low voltage and high voltage areas. The low voltage area is equipped with an optical signal demodulator, and the high voltage area is equipped with a temperature sensor for measuring the temperature of the conductive arm of the circuit breaker. The temperature sensor and the optical signal demodulator are connected through optical fibers, and the optical signal demodulator is connected to the external display or alarm device of the circuit breaker.

The fluorescent fiber optic temperature sensor collects the contact temperature of the high-voltage circuit breaker inside the high-voltage switchgear. The collected signal is modulated and sent to the microprocessor, which saves and displays it. According to the set safety temperature value, the buzzer or voice alarm module is activated to achieve real-time monitoring. At the same time, the staff is promptly reminded to cool down the circuit breaker to ensure the normal operation of the high-voltage switchgear.

Customer users can measure the temperature of the circuit breaker by setting up a fluorescent fiber optic temperature sensor host system, upload the measurement results to the controller, and the controller will determine whether the temperature exceeds the set value. Then, based on the judgment results, the cooling device will be controlled and the temperature situation will be sent to the backend monitoring system and mobile terminal. The fluorescence fiber optic temperature measurement system can not only effectively monitor the temperature of the circuit breaker, but also timely upload the monitoring results to the background monitoring system and mobile terminals, enabling monitoring personnel to grasp the temperature monitoring situation of the circuit breaker anytime and anywhere. Simultaneously adjust the temperature of the circuit breaker through a cooling device.

Circuit breaker fluorescent fiber optic online temperature measurement host

The fluorescence online temperature monitoring system for circuit breakers mainly includes: fiber optic temperature sensors, microprocessor circuits, display circuits, keyboard circuits, alarm circuits, power circuits, communication interface circuits, etc.

The fiber optic monitoring and temperature measurement system for circuit breakers is mainly in contact with the dynamic and static contacts of the tested parts of the circuit breaker, as well as the circuit board. The collected temperature information is transmitted to the fiber optic temperature measurement host, which communicates with the backend monitoring system; And the fiber optic temperature measurement host can be equipped with functions such as over temperature alarm and over high temperature trip. When the temperature collected by the fiber optic sensor exceeds the set temperature, for example, when the set temperature is set to 60 ° C, the fiber optic temperature measurement host will send out an over temperature alarm signal. At the same time, the fan will be started to cool down and dissipate the heat inside the circuit breaker;

If the temperature continues to rise sharply at this time and the collected temperature exceeds another set temperature, such as 85 ° C, the fiber optic temperature measurement host will have an ultra-high temperature trip signal transmitted, and the circuit breaker will be controlled to trip at the same time; At this time, whether controlling fan cooling or ultra-high temperature tripping signals, they are uploaded to the background monitoring system, which can achieve monitoring anytime and anywhere.

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