發(fā)布時間：2018-07-25 08:27

【摘要】：變壓器需要一點(diǎn)接地,但又絕不允許多點(diǎn)接地,在對其分析論述的基礎(chǔ)上,抓住接地故障主為電流變化的特點(diǎn),摒棄常規(guī)電磁感應(yīng)方式,運(yùn)用霍爾技術(shù)采樣,并利用正負(fù)電源過零特點(diǎn),將其設(shè)置為比較判斷值,大幅提高測試準(zhǔn)確度,同時引入單片機(jī)技術(shù),實(shí)現(xiàn)計算、存儲和信號遠(yuǎn)傳等多項功能,研制出了較為先進(jìn)完善的變壓器鐵心接地電流在線監(jiān)測裝置。
[Abstract]:The transformer needs a little grounding, but it will never allow multi-point earthing. On the basis of analyzing and discussing it, the main characteristic of current variation in grounding fault should be grasped, and the conventional electromagnetic induction mode should be abandoned, and Hall technology should be used to sample the earth. By using the zero-crossing characteristic of positive and negative power supply, it is set to compare and judge value, and the accuracy of test is greatly improved. At the same time, the single-chip computer technology is introduced to realize many functions, such as calculation, storage and remote transmission of signal, etc. A more advanced on-line monitoring device for earthing current of transformer core is developed.
【作者單位】： 國網(wǎng)四川省電力公司涼山供電公司;四川電力科學(xué)研究院;
【分類號】：TM862;TM406

【共引文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 王婧，

本文編號：2143219