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三相短路开断等效电路模型建立及仿真计算
资料介绍
短路故障是电力系统运行中的一种常见故障,计算系统中发生短路故障时的电流和电压参数具有重要的意义。本文以对称分量法的正序、负序、零序分量为基础,合并正序、负序分量为相序分量,然后在中性点与地之间引入零序接地阻抗得出简化的等效电路。针对中性点有效接地和非有效接地的电力系统在三相对称短路的情况下,使用等效电路计算了两种情况下的电流及电压参数,并用PSCAD软件的仿真结果验证了计算结果的正确性。
Short-circuit fault is a common fault of power system in operation,it is important to calculate the voltage and current parameters when there has a short-circuit fault in power system.In this paper,based on the positive sequence,negative sequence and zero sequence components and combination of positive sequence and negative sequence components as a phase sequence component,a equivalent circuit based on zero sequence groundingimpedance has been proposed.Furthermore,the equivalent circuithas been used to calculate the three-phase short-circuit current interruption,and the calculation results have been verified by the simulation results of PSCAD.
部分文件列表
| 文件名 | 大小 |
| 三相短路开断等效电路模型建立及仿真计算.pdf | 180K |
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