根据列方程时所选变量的不同可分为 支路电流法、网孔（回路）电流法和节点电压法。14 3.1 支路电流法(branch current method ) 一、 支路电流法以各支路电流为未知量列写电路方 程分析电路的方法。
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Instead very simple derivation operation is used. It is easy to grasp this method compared with branch current method, loop current method or nod voltage method.
自导纳。互导纳的工作代之以一些很简单的求导运算。它与传流的支路法。回路法。节点法相比更加易于掌握。
The current method to branch wire from the cable trunk is to cut off the trunk line, and crimp two ends of trunk line and the required branch, and pack them, or to bind the branch line to trunk line.
现行的从电缆主干线上取得分支线的方法就是切断主干线，将干线两头和所分的支线一同压接后包裹起来，或是将分支线绑轧在主干线上。
Based on the branch-current-based current method, this paper presented a three-phase state estimation method for Distribution where the load current is considered as the state variable.
在基于支路电流的三相配电网状态估计的基础上提出了以负荷电流为状态变量的配电网的三相状态估计方法。
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