箱式變電站是(shi)一種集(ji)變壓(ya)器、開關(guan)設(she)備(bei)(bei)(bei)、控制(zhi)設(she)備(bei)(bei)(bei)和(he)其他輔助設(she)備(bei)(bei)(bei)于一體的小型變電站，具有體積小、結構緊湊(cou)、運輸方便等特點。其主要原理是(shi)將高壓(ya)電能(neng)(neng)轉換為低壓(ya)電能(neng)(neng)，并通過開關(guan)設(she)備(bei)(bei)(bei)和(he)控制(zhi)設(she)備(bei)(bei)(bei)進行電力配電和(he)保護。

箱式(shi)變(bian)電站的(de)主要(yao)原理如下：

1. 變(bian)壓(ya)(ya)(ya)器原理：箱式變(bian)電(dian)站內部配備(bei)變(bian)壓(ya)(ya)(ya)器，主要功(gong)能(neng)(neng)是將進入變(bian)電(dian)站的高壓(ya)(ya)(ya)電(dian)能(neng)(neng)轉換(huan)為所需要的低壓(ya)(ya)(ya)電(dian)能(neng)(neng)。變(bian)壓(ya)(ya)(ya)器由(you)高壓(ya)(ya)(ya)繞組(zu)和低壓(ya)(ya)(ya)繞組(zu)組(zu)成(cheng)，通(tong)過磁感應(ying)原理將高壓(ya)(ya)(ya)電(dian)能(neng)(neng)轉換(huan)為低壓(ya)(ya)(ya)電(dian)能(neng)(neng)。變(bian)壓(ya)(ya)(ya)器還可以承擔電(dian)力配電(dian)和保護的功(gong)能(neng)(neng)。

2. 開(kai)(kai)關設備原(yuan)理：箱式變電(dian)站內部配(pei)備開(kai)(kai)關設備，主要功能是實現(xian)(xian)電(dian)路的開(kai)(kai)關控制，包括開(kai)(kai)關的合閘和分閘操(cao)作(zuo)。開(kai)(kai)關設備采用(yong)可靠的機械(xie)結構和電(dian)氣控制系統，通過(guo)控制開(kai)(kai)關的操(cao)作(zuo)，實現(xian)(xian)電(dian)力系統的投入和斷開(kai)(kai)。

3. 控(kong)(kong)(kong)制設(she)備(bei)原理：箱式變電站內部配備(bei)控(kong)(kong)(kong)制設(she)備(bei)，主要(yao)功能(neng)是對電力系(xi)統進行(xing)監控(kong)(kong)(kong)和控(kong)(kong)(kong)制。控(kong)(kong)(kong)制設(she)備(bei)可以(yi)實現(xian)對變電站各個設(she)備(bei)的(de)狀態檢測和報(bao)警，以(yi)及對系(xi)統的(de)遠程監控(kong)(kong)(kong)和操作(zuo)。控(kong)(kong)(kong)制設(she)備(bei)還可以(yi)實現(xian)對電力系(xi)統的(de)自動(dong)化控(kong)(kong)(kong)制和智能(neng)化管理。

4. 輔(fu)助設備原理：箱(xiang)式變電(dian)站還配備了一些其(qi)他輔(fu)助設備，包括(kuo)冷卻裝置(zhi)、通風裝置(zhi)、照明設備等。這些設備的主(zhu)要功能(neng)是保證箱(xiang)式變電(dian)站的正常(chang)運(yun)行和工(gong)作環境的安全。

總之，箱式變電(dian)(dian)(dian)站的原理(li)是將進(jin)入(ru)變電(dian)(dian)(dian)站的高壓電(dian)(dian)(dian)能(neng)通過(guo)變壓器轉(zhuan)換為低壓電(dian)(dian)(dian)能(neng)，通過(guo)開關設備(bei)和(he)(he)控制設備(bei)進(jin)行(xing)電(dian)(dian)(dian)力配電(dian)(dian)(dian)和(he)(he)保護。輔助設備(bei)則保證變電(dian)(dian)(dian)站的正常(chang)運行(xing)和(he)(he)工作環境(jing)的安全。