供電系統(tǒng)外文翻譯-其他專業(yè)-全文預(yù)覽
【正文】 壓是通過(guò)一次側(cè)系統(tǒng)相連接的配電變壓器取得，其電壓與應(yīng)用電壓相一致，大多數(shù)負(fù)載采用三相四線制的單相電壓供電， 380/220V。供電系統(tǒng)包括一次電路和變電站，配電變壓器，合適的保護(hù)和控制設(shè)備 三大用電戶是工廠，住宅，農(nóng)村，工廠供電系統(tǒng)是電力系統(tǒng)的主要組成部分，它是電能的主要用戶，根據(jù)發(fā)達(dá)國(guó)家的統(tǒng)計(jì)，工廠用電量占全國(guó)發(fā)電量的 50%甚至 70%以上，絕大多數(shù)的工廠由國(guó)家電力系統(tǒng)供電。(e)metering equipment。 Power Suppying Technology and Intelligent Building The electric distribution system is a part of an electric power system that supplies electric energy to the individual user or consumer .The distribution substations that supply them, the distribution transformers ,and appropriate protective and control devices The three general classes of individual user are industrial ,residential, and rural The threephase alternatingcurrent (ac) system is practically universal ,although a small amount of directcurrent systems are in operation .Threephase transformer and subtransmission lines require three wires ,learned phase conductors. Most of the lowvoltage three phase distribution systems consist of three phase conductions and a mon or neutral conductor ,making a total of four wires .singlephase branches (consisting of two wires)supplied from the threephase mains are used for single phase utilization in residences, small stores ,and farms,loads are connected in parallel to mon supply circuits. The distribution substation is an assemblage of equipment for purpose of switching, changing and regulating the voltage from subtransmission to primary distribution .More important substations are designed so that the failure of a piece of equipment in the substation or one of the subtransmission lines to the substation will not cause an interruption of power to the load The primary system leaving the substation is most frequently in the 635kv range. A particular voltage used is IOkv linetoline and fine to neutral(conventionally writ
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