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《Electric Power Automation Equipment》 2006-10
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Discussion on protection configuration of 1000 MW generator-transformer unit

YANG Li(Guangdong Electric Power Design Institute,Guangzhou 510600,China)  
Based on the structural feature and operational experience of 1000 MW generator-trans-former unit,some unclear technological concepts of protection configuration are investigated.Main configuration features of some protections are discussed in detail,such as the main protection configuration scheme of generator with different neutral point leadout modes,the principle of inter-turn protection configuration,configuration schemes of branch differential protection and zero-sequence differential protection for the main transformer,and so on.The selection of current transformer used in protection is analyzed simply,and the configuration scheme of 1 000 MW unit according to present practical application condition are suggested.
【CateGory Index】: TM774
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