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《Electric Power Automation Equipment》 2006-06
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Study on compound sequence network model of short-circuit current calculation for variable structure branch

LUO Qing-yue 1,HUANG Da-zu 1,WANG Yue-qiu 1,CHEN Wei 1,LUO Cheng 2(1. Shaoyang College,Shaoyang 422004,China;2. Guangdong Provincial Transmissionand Distribution Engineering Company,Guangzhou 510160,China)  
A compound sequence network mathematic model is proposed to figure out the short -circuit current through the variable structure branch,using a variable structure branch to simulate the switching equipment(such as breaker,etc.). Applying the basic principle of the short-circuit fault compound sequence network analytical method and combined the short-circuit fault analytical method of variable structure and parameter,the short-circuit current through the switching equipment when short -circuit happens at one side of it can be calculated. With phase A as reference,its mathematics model is constructed for the three-phase short-circuit,two-phase short-circuit,two-phase grounding,single-phase grounding respectively. With clear physical meaning and easy modeling,the model has wide application prospects in the field of short-circuit fault analysis on computer.
【Fund】: 湖南省教育厅资助项目(05C668)~~
【CateGory Index】: TM713
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【Citations】
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