廠用電系統(tǒng)中不同電源切換的特點(diǎn) 

章恩科 
浙江省電力建設(shè)有限公司，浙江 寧波 315012 
 

摘 要：為確保燃煤型火力發(fā)電機(jī)組重要負(fù)載供電的連續(xù)可靠，不同電壓等級(jí)配電裝置采用多路進(jìn)線電源。分析了廠用電系統(tǒng)中不同電源切換的特點(diǎn)，并給出相關(guān)電源的接線圖；在主電源失電后依據(jù)進(jìn)線電源的特點(diǎn)及切換的邏輯順序快速合上備用電源，當(dāng)主電源復(fù)電后能將備用電源反切到由主電源供電，為重要負(fù)載穩(wěn)定運(yùn)行從電源上提供了保障。
關(guān)鍵詞：燃煤型火力發(fā)電機(jī)組；廠用電源；電源切換
中圖分類(lèi)號(hào)：TM621；TM762.1 文獻(xiàn)標(biāo)識(shí)碼：B 文章編號(hào)：1007-3175(2013)10-0040-04

Features of Different Power Source Switching in Plant Power Use System 

ZHANG En-ke 
Zhejiang Electric Power Construction Co., Ltd, Ningbo 315012, China 
 

Abstract: In order to ensure continuous reliability of coal-burning thermal power generating sets important load power supply, different voltage grade distribution devices adopted multiple line-in power sources. Analysis was made to different switching features in plant power use system, the wiring diagram of related power source given. On main power source lost, according to features of line-in power source and logic sequence of switching, the spare power source would be quickly making on. When the main power source was recovered, the spare power source can be reversely switched to main power source to supply power, which provided guarantee for important load stable operation from power source.
       Key words: coal-burning thermal power generating sets; plant use power supply; power source switching

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