火電廠、變電站電力電纜長期運行在高電壓、大電流環境下, 其接頭容易超溫過熱, 引起爆炸, 導致火災, 建立電力電纜火災在線監測系統具有必要性。為此, 介紹發電廠電力電纜火災在線監測系統的總體設計,硬件結構及接口設計。該系統的現場子站設計采用了新型數字式溫度傳感器, 不僅功能強、可靠性高, 而且兼有耗能低, 體積小的優點。
關鍵詞: 電力電纜; 在線監測; 數字式溫度傳感器
Abstract : Because p ower cable of t he p ower plant and substation works in a high voltage and large cur rent working condi2 tions f or a long time so t hat t he over temperature p ower cable connection would explode and f i re easily. It is necessary t o set up a on2line p ower cable f i re supervise system. This p aper int roduces t he design of t he hardware and t he communication in2 terf ace in t he elect ric p ower cable on2line monit oring system. A new digital temperature sensor is used in t he scene work sub2 station , it makes t he system having much more f unctions , high reliability , low p ower consump tion and small p ackage .
Key words : p ower cable ; on2line monit oring ; digital temperature sensor