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簡要描(miao)述:諧(xie)波(bo)電(dian)(dian)表(biao)采(cai)用交流采(cai)樣技術,能分(fen)別測(ce)量(liang)電(dian)(dian)網(wang)中的電(dian)(dian)流、電(dian)(dian)壓、功率(lv)、功率(lv)因(yin)數和(he)電(dian)(dian)能等參數,可通(tong)過面板薄(bo)膜開關設置倍(bei)率(lv)。帶(dai)RS-485通(tong)訊接口(kou),采(cai)用Modbus或Profibus協議;也可將電(dian)(dian)量(liang)信(xin)號(hao)轉換成標準的直(zhi)流模(mo)擬信(xin)號(hao)輸(shu)出;或帶(dai)開關量(liang)輸(shu)入/輸(shu)出,繼電(dian)(dian)器報(bao)警輸(shu)出等功能。諧(xie)波(bo)電(dian)(dian)能表(biao)PZ系(xi)列
品牌 | Acrel/安科瑞 | 應用領域 | 環保,食品,化工,地礦,交通 |
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諧波電能表PZ系列提(ti)供一種電能(neng)表(biao)諧波(bo)試驗裝(zhuang)置(zhi)及其方法(fa),所(suo)(suo)述裝(zhuang)置(zhi)包(bao)括三相交流(liu)程控(kong)源、電流(liu)諧波(bo)發生器(qi)、標(biao)準(zhun)表(biao)和(he)誤(wu)差(cha)計算器(qi);所(suo)(suo)述三相交流(liu)程控(kong)源、電流(liu)諧波(bo)發生器(qi)、標(biao)準(zhun)表(biao)和(he)誤(wu)差(cha)計算器(qi)依(yi)次連接(jie)。
諧波電表所述方法包括:
(1)三相交流程控源和電流諧波發生器產生所需參數;
(2)將所需參數提供給被校表和標準表;
(3)經被校表和標準表的電能脈沖比對計算出誤差;
(4)并與產生正弦波的電源下的誤差進行比較,檢驗出誤差影響量。
本發明能(neng)有效地實現(xian)電(dian)壓、電(dian)流(liu)高(gao)次(ci)諧(xie)波(bo)(bo)(bo),實現(xian)直流(liu)偶次(ci)諧(xie)波(bo)(bo)(bo),次(ci)諧(xie)波(bo)(bo)(bo),奇次(ci)諧(xie)波(bo)(bo)(bo)的(de)輸出,并(bing)對直流(liu)偶次(ci)諧(xie)波(bo)(bo)(bo)、次(ci)諧(xie)波(bo)(bo)(bo)、奇次(ci)諧(xie)波(bo)(bo)(bo)這三種(zhong)諧(xie)波(bo)(bo)(bo)進行(xing)(xing)(xing)切(qie)換,實現(xian)一(yi)次(ci)接線(xian)可(ke)進行(xing)(xing)(xing)多個諧(xie)波(bo)(bo)(bo)試(shi)驗(yan)。目(mu)前由于(yu)大量的(de)非線(xian)性用電(dian)設備的(de)增加(jia),在(zai)電(dian)網中產生大量的(de)諧(xie)波(bo)(bo)(bo),給(gei)電(dian)力電(dian)子裝置(zhi)帶來(lai)的(de)諧(xie)波(bo)(bo)(bo)問題(ti),對電(dian)力系(xi)統(tong)安(an)全、穩定、經濟(ji)運行(xing)(xing)(xing)構成潛在(zai)威脅和對電(dian)能(neng)計量產生影響,給(gei)周圍(wei)電(dian)網運行(xing)(xing)(xing)帶來(lai)極大影響。
主要可分為兩類:一是含半導體的(de)(de)(de)非線性(xing)(xing)元件,如各種(zhong)(zhong)整(zheng)流(liu)(liu)(liu)設(she)(she)(she)備(bei)(bei)、變流(liu)(liu)(liu)器(qi)、交直流(liu)(liu)(liu)換(huan)流(liu)(liu)(liu)設(she)(she)(she)備(bei)(bei)、變頻器(qi)等節(jie)能(neng)(neng)和(he)控(kong)制用的(de)(de)(de)電(dian)(dian)(dian)力(li)(li)電(dian)(dian)(dian)子設(she)(she)(she)備(bei)(bei);二是含電(dian)(dian)(dian)弧和(he)鐵磁非線性(xing)(xing)設(she)(she)(she)備(bei)(bei)的(de)(de)(de)使用,如交流(liu)(liu)(liu)電(dian)(dian)(dian)弧爐(lu)及(ji)鐵磁諧振(zhen)設(she)(she)(she)備(bei)(bei)等。隨著硅整(zheng)流(liu)(liu)(liu)、電(dian)(dian)(dian)弧爐(lu)及(ji)可控(kong)硅換(huan)流(liu)(liu)(liu)設(she)(she)(she)備(bei)(bei)的(de)(de)(de)廣泛使用和(he)各種(zhong)(zhong)非線性(xing)(xing)負荷的(de)(de)(de)增加(jia),當正弦(xian)(xian)基波(bo)(bo)電(dian)(dian)(dian)壓施加(jia)于(yu)非線性(xing)(xing)設(she)(she)(she)備(bei)(bei)時,非線性(xing)(xing)設(she)(she)(she)備(bei)(bei)對(dui)(dui)電(dian)(dian)(dian)網(wang)的(de)(de)(de)電(dian)(dian)(dian)壓電(dian)(dian)(dian)流(liu)(liu)(liu)的(de)(de)(de)正弦(xian)(xian)波(bo)(bo)產(chan)(chan)生影響(xiang),使其產(chan)(chan)生高(gao)次諧波(bo)(bo),諧波(bo)(bo)電(dian)(dian)(dian)流(liu)(liu)(liu)注入(ru)到電(dian)(dian)(dian)網(wang)中,造成電(dian)(dian)(dian)壓正弦(xian)(xian)波(bo)(bo)形(xing)畸變,這些設(she)(she)(she)備(bei)(bei)就(jiu)成了電(dian)(dian)(dian)力(li)(li)系統(tong)的(de)(de)(de)諧波(bo)(bo)源。諧波(bo)(bo)對(dui)(dui)電(dian)(dian)(dian)能(neng)(neng)表計量的(de)(de)(de)影響(xiang)越(yue)來越(yue)受到人們的(de)(de)(de)重視(shi),所以就(jiu)需要一種(zhong)(zhong)諧波(bo)(bo)源來測試諧波(bo)(bo)對(dui)(dui)電(dian)(dian)(dian)能(neng)(neng)表計量誤(wu)差影響(xiang)量的(de)(de)(de)檢驗(yan)。
諧(xie)波(bo)電表價格采用交流(liu)采樣技術,能分別測量電網中的電流(liu)、電壓(ya)、功率、功率因數和電能等參(can)數,可通(tong)過面(mian)板薄膜開(kai)關設(she)置(zhi)倍率。帶(dai)RS-485通(tong)訊接(jie)口,采用Modbus或(huo)Profibus協議;也(ye)可將電量信號轉換成標準的直(zhi)流(liu)模(mo)擬信號輸出;或(huo)帶(dai)開(kai)關量輸入/輸出,繼(ji)電器報(bao)警輸出等功能。
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