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The working principle of fluorescence fiber optic thermometer
Fluorescent fiber optic thermometer can monitor the temperature of the voltage divider in a closed chamber in real time, thereby detecting the temperature inside the DC voltage transformer; Combined with a fluorescent fiber temperature sensor uniformly fixed on the voltage divider, it can comprehensively and reliably monitor temperature. The entire temperature monitoring adopts optical signal transmission, so it is not affected by high voltage and strong electromagnetic interference, and can accurately determine whether the detected temperature exceeds the normal working temperature of the voltage divider, ensuring the safe operation of the DC voltage transformer; The fluorescent fiber optic temperature sensor converts the sensed temperature into a light signal, which is transferred to the fluorescent fiber optic thermometer through an adapter fiber optic. The fluorescent fiber optic thermometer modulates and demodulates the temperature light signal, and then transmits it to the fiber optic converter for photoelectric conversion. The fiber optic converter then transmits the converted temperature electrical signal to the PC, which displays the temperature measured by each fluorescent fiber optic temperature sensor inside the DC voltage transformer. The fluorescence fiber optic temperature measurement system can not only be used for monitoring ultra-high voltage DC voltage transformers, but also for verifying the internal temperature curve obtained by thermal simulation method.
Voltage transformer fiber optic temperature measurement
The fluorescent fiber optic thermometer can detect the internal temperature of the DC voltage transformer in real time, determine whether this temperature exceeds the normal working temperature of the resistor and capacitor, and ensure the safe operation of the DC voltage transformer. It can be used for measuring the internal temperature during the experimental stage of ultra-high voltage DC voltage transformers, verifying the internal temperature curve obtained by thermal simulation method, and can also be used for long-term monitoring of the safe operation of DC voltage transformers in ultra-high voltage engineering. The monitoring values are accurate and reliable, with the characteristics of high temperature resistance and SF6 environment resistance, and are not affected by high voltage and strong electromagnetic interference, accurately reflecting the temperature inside the DC voltage transformer.
