박스형 변전소의 변압기용 광섬유 온도 측정 시스템

The role of fiber optic temperature online monitoring system in box type substation

The fluorescence fiber optic temperature measurement system can directly monitor the temperature of the low-voltage side circuit breaker contacts, 케이블 조인트, and other parts of the box type substation. By using a fluorescence fiber optic temperature measurement probe, the temperature of the low-voltage side circuit breaker contacts and cable joints in the box type substation can be sensed. It can intuitively monitor and evaluate the operation of the box type substation, detect overheating problems at the contacts or joints in advance, and avoid adverse effects on the insulation and service life of the box type substation.

The fiber optic temperature online monitoring system for box type substations consists of fluorescent fiber optic temperature sensors, 광섬유 온도 센서 (display modules), optical cables, 등. Each box type substation has no less than 6 온도 측정 지점, including 3 points for the low-voltage side circuit breaker contact temperature and 3 points for the cable joint temperature. It can monitor and fault alarm in real time online. In addition to displaying alarm information on site, it can also be transmitted to the monitoring background through RS485 port and achieve remote monitoring. The fiber optic temperature measurement system device must pass the type test integrated with the box type substation and provide relevant inspection reports.

The main technical parameters of the fiber optic temperature online monitoring system for box type substations are as follows:

(1) 온도 측정 범위: -20-+150 °씨;
(2) 온도 측정 정확도: ± 1 °씨;
(3) Contact measurement method, but shall not affect the insulation performance of the box type substation;
(4) The system is not affected by the electromagnetic environment inside the box type substation and provides relevant electromagnetic compatibility test reports;
(5) Capable of saving temperature data and alarm temperature time and other parameters;
(6) The lifespan of the probe shall not be less than 30 년.

The principle of fluorescent 광섬유 온도 센서

A 형광성 광섬유 온도 감지기 다중 모드 광섬유와 형광체로 구성됩니다. (양피지) 상단에 설치. 형광 물질은 특정 파장의 빛에 의해 자극을 받으면 형광 에너지를 방출합니다 (자극 스펙트럼). 인센티브가 취소된 후, 형광 잔광의 지속성은 형광 물질의 특성 및 환경 온도와 같은 요인에 따라 달라집니다. 이 들뜬 형광은 일반적으로 기하급수적으로 감소합니다, 그리고 붕괴 시간 상수를 형광 수명 또는 형광 잔광 시간이라고 합니다. 형광 잔광의 감쇠는 주변 온도에 따라 다릅니다. 그러므로, Fluorescence Afterglow의 수명을 측정하여, 그 때의 주위 온도를 결정할 수 있습니다.