一、電能質量分析記錄儀是什么儀器
電(dian)(dian)(dian)(dian)(dian)能(neng)質(zhi)量(liang)(liang),從普遍(bian)意義上講(jiang)是指優質(zhi)供電(dian)(dian)(dian)(dian)(dian),包括電(dian)(dian)(dian)(dian)(dian)壓質(zhi)量(liang)(liang)、電(dian)(dian)(dian)(dian)(dian)流(liu)質(zhi)量(liang)(liang)、供電(dian)(dian)(dian)(dian)(dian)質(zhi)量(liang)(liang)和(he)用電(dian)(dian)(dian)(dian)(dian)質(zhi)量(liang)(liang),其(qi)可(ke)以定義為:導致用電(dian)(dian)(dian)(dian)(dian)設備故障(zhang)或不(bu)(bu)能(neng)正常工(gong)作的(de)電(dian)(dian)(dian)(dian)(dian)壓、電(dian)(dian)(dian)(dian)(dian)流(liu)或頻率的(de)偏差,其(qi)內容包括頻率偏差、電(dian)(dian)(dian)(dian)(dian)壓偏差、電(dian)(dian)(dian)(dian)(dian)壓波(bo)(bo)動與閃(shan)變、三相(xiang)不(bu)(bu)平衡、暫(zan)時或瞬態過電(dian)(dian)(dian)(dian)(dian)壓、波(bo)(bo)形畸變(諧波(bo)(bo))、電(dian)(dian)(dian)(dian)(dian)壓暫(zan)降、中(zhong)(zhong)斷、暫(zan)升以及供電(dian)(dian)(dian)(dian)(dian)連續性等。在現代電(dian)(dian)(dian)(dian)(dian)力系統中(zhong)(zhong),電(dian)(dian)(dian)(dian)(dian)壓暫(zan)降和(he)中(zhong)(zhong)斷已成為最重(zhong)要的(de)電(dian)(dian)(dian)(dian)(dian)能(neng)質(zhi)量(liang)(liang)問題(ti)。
電能質量分析記錄儀,是(shi)對電(dian)(dian)網運行質量(liang)(liang)進行檢(jian)測(ce)及分(fen)析的(de)(de)專(zhuan)用便攜式(shi)產品,可以提供(gong)電(dian)(dian)力運行中的(de)(de)諧波分(fen)析及功率品質分(fen)析,能(neng)夠(gou)對電(dian)(dian)網運行進行長(chang)時(shi)間(jian)的(de)(de)數據(ju)采集監測(ce),同(tong)時(shi)配備電(dian)(dian)能(neng)質量(liang)(liang)數據(ju)分(fen)析軟件(jian),對上傳至計算機的(de)(de)測(ce)量(liang)(liang)數據(ju)進行各種分(fen)析。
電能(neng)質量分(fen)析記錄(lu)儀是一種測試儀器,隨著(zhu)大小設備(bei)用(yong)電的(de)各個方面越(yue)(yue)來越(yue)(yue)重要,它(ta)在電氣(qi)和電子(zi)行業應用(yong)也越(yue)(yue)來越(yue)(yue)廣泛。
二、電能質量分析記錄儀的結構組成
電能質量(liang)分析記錄記錄儀主要由五部(bu)分組成,分別為測量(liang)變換(huan)模(mo)塊、模(mo)數(shu)轉換(huan)模(mo)塊、數(shu)據(ju)處(chu)理(li)模(mo)塊、數(shu)據(ju)管理(li)模(mo)塊以(yi)及(ji)外圍模(mo)塊。
其中測(ce)量變(bian)換模(mo)(mo)塊(kuai)由電壓互感(gan)器、電流互感(gan)器以及(ji)(ji)信號調理(li)電路組成;數據處理(li)模(mo)(mo)塊(kuai)包含DSP以及(ji)(ji)外部存儲器SDRAM與FLASH;外圍模(mo)(mo)塊(kuai)由顯示、存儲以及(ji)(ji)通信子(zi)模(mo)(mo)塊(kuai)組成。
三、電能質量分析記錄儀的原理是什么
電能質量分析記錄儀是一種專用(yong)(yong)于分析(xi)記錄電(dian)(dian)網運行(xing)(xing)質量的儀表,它主要利用(yong)(yong)的是電(dian)(dian)信(xin)號(hao)被轉換成數字(zi)信(xin)號(hao)的原(yuan)理(li),對電(dian)(dian)網運行(xing)(xing)質量進行(xing)(xing)檢測和分析(xi),具體的工作原(yuan)理(li)是:
1、電網信(xin)號經過電壓(ya)/電流互(hu)感器、信(xin)號調(diao)理(li)電路轉變為符合ADC輸入要(yao)求的小(xiao)幅(fu)值(zhi)電壓(ya)信(xin)號。
2、模數(shu)轉換模塊用于(yu)將小幅值電(dian)壓信號轉變(bian)為數(shu)字信號,并(bing)將其(qi)傳送至數(shu)據(ju)處理模塊。
3、數據處(chu)理(li)模塊以(yi)DSP作為(wei)運算(suan)(suan)核心,對ADC的采樣信號(hao)進行數據處(chu)理(li),從而(er)計算(suan)(suan)得到電壓偏(pian)(pian)差、頻率偏(pian)(pian)差、諧波(bo)、三相不平衡度、電壓閃變等電能(neng)質(zhi)量參(can)數。
4、數據管(guan)理(li)模塊(kuai)用于對數據處理(li)模塊(kuai)計(ji)算得(de)到的各項(xiang)電能質(zhi)量參數進行數據管(guan)理(li),完成顯示、存儲以及通信(xin)等人機交互功能。