Fiber optic temperature sensor monitoring on transformer in box type substation-INNO

Das fiber optic temperature online monitoring system for box type substation transformers can directly monitor the temperature of the low-voltage side circuit breaker contacts, Kabelmuffen, and other parts of the box transformer. By using fluorescent fiber optic temperature probes, the temperature of the low-voltage side circuit breaker contacts and cable joints of the box transformer can be sensed, and the operation of the box transformer can be intuitively monitored and evaluated. Overheating problems at the contacts or joints can be detected in advance to avoid adverse effects on the insulation and service life of the box transformer.

Das fluorescence fiber optic temperature online monitoring system consists of fluorescence fiber optic temperature sensors, faseroptische Temperatursensoren (Display-Module), Optische Kabel, etc. Each box type transformer has no less than 6 Temperatur-Messstellen, including the low-voltage side circuit breaker contact temperature (3 points) and cable joint temperature (3 points). The final measurement points will be determined by the project unit. Real time online monitoring and fault alarm can be achieved. Neben der Anzeige von Alarminformationen vor Ort, it can also be transmitted to the monitoring background through RS485 interface and achieve remote monitoring. The temperature monitoring system device has passed the type test integrated with the box transformer and provided relevant inspection reports.

The main technical parameters of the box transformer fiber optic temperature online monitoring system are as follows:
(1) Temperatur-Messbereich: -20~+150 ℃;
(2) Genauigkeit der Temperaturmessung: ± 1 °C;
(3) Contact measurement method does not affect the insulation performance of the box transformer; The fluorescent Glasfaser sensor has passed the power frequency withstand voltage test, with a 20cm withstand voltage of no less than 80kV, and an inspection report provided;
(4) The system is not affected by the electromagnetic environment inside the substation and provides relevant electromagnetic compatibility test reports;
(5) Kann Temperaturdaten und Alarmtemperatur, Zeit und andere Parameter speichern;
(6) Die Lebensdauer der Sonde darf nicht geringer sein als 30 Jahre.