火電廠、變電站電力電纜長(zhǎng)期運(yùn)行在高電壓、大電流環(huán)境下, 其接頭容易超溫過(guò)熱, 引起爆炸, 導(dǎo)致火災(zāi), 建立電力電纜火災(zāi)在線監(jiān)測(cè)系統(tǒng)具有必要性。為此, 介紹發(fā)電廠電力電纜火災(zāi)在線監(jiān)測(cè)系統(tǒng)的總體設(shè)計(jì),硬件結(jié)構(gòu)及接口設(shè)計(jì)。該系統(tǒng)的現(xiàn)場(chǎng)子站設(shè)計(jì)采用了新型數(shù)字式溫度傳感器, 不僅功能強(qiáng)、可靠性高, 而且兼有耗能低, 體積小的優(yōu)點(diǎn)。
關(guān)鍵詞: 電力電纜; 在線監(jiān)測(cè); 數(shù)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