摘要
用基于故障输电线分布参数复频域节点导纳方程及Hosono提出的数值拉普拉斯反变换方法对带分支的故障输电线首末端节点时域电压响应进行了分析。基于MATLAB的分析过程及结果证明,该方法比用Pade有理函数对ste的近似数值拉普拉斯反变换方法在模拟参数选择上更简单易行,在计算上更准确。同时在同一坐标图中给出了沿不同分支各点发生同一种类型故障时首端电压有效值与故障距离的关系图,该图可以用于树型配电网故障分析。
Based on nodal admittance matrix of faultytransmission line in complex frequency domain and thenumerical inverse Laplace transformation (NILT) presented by Hosono, the response in time domain of the voltage at the two ends of faulty branched transmission line is analyzed. It isproved by the analysis based on the MATLAB that thepresented method is more simple and efficient in the selection of analogous parameters than the approximate NILT of ste byPade rational function and the calculation results are moreaccurate. Meanwhile when same kind of fault occurs at thepoints along different branches, in a same coordinate diagram the graph of the relation between the rms value of the voltage at the receiving end and the distance where the fault occurs is given. This graph can be applied to the fault analysis of tree distribution network.
出处
《电网技术》
EI
CSCD
北大核心
2003年第5期40-42,共3页
Power System Technology
基金
电力部青年促进费资助项目(96Q13)
