電廠電流互感器基建期調(diào)試方法研究
王思聰,羅凱,張清
(中國大唐集團(tuán)科學(xué)技術(shù)研究院有限公司西北電力試驗(yàn)研究院,陜西 西安 710021)
摘 要:對于新建、擴(kuò)建發(fā)電機(jī)組,在基建調(diào)試過程中必須對電流互感器(CT)的變比、準(zhǔn)確級、接線、極性等進(jìn)行檢查確認(rèn)。對調(diào)試過程中極性判別及接線檢查、伏安特性及10%誤差曲線校核、倒送電及整套啟動過程CT檢查進(jìn)行了原理分析,并給出了具體調(diào)試步驟,確保CT的接線、極性等完全正確。
關(guān)鍵詞:基建調(diào)試;電流互感器;極性檢查
中圖分類號:TM452 文獻(xiàn)標(biāo)識碼:A 文章編號:1007-3175(2020)10-0051-04
Study on the Commissioning Method of Current Transformer in the Construction Period of Power Plant
WANG Si-cong, LUO Kai, ZHANG Qing
(China Datang Corporation Science and Technology Research Institute Co.,Ltd,
Datang Northwest Electric Power Test & Research Institute, Xi'an 710021, China)
Abstract: For the newly built and expanded generator sets, the transformation ratio, accuracy level, wiring, polarity of current transformer(CT) must be checked and confirmed during the process of infrastructure commissioning.The principle analysis of polarity discrimination and wiring inspection, volt-ampere characteristics and 10% error curve verification, reverse power transmission and CT inspection of the entire start-up process during the debugging process are carried out, and specific debugging steps are given to ensure the wiring and polarity of the CT are completely correct.
Key words: infrastructure commissioning; current transformer; polarity check
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