【摘要】 提出了一种适用于高压同杆并架双回线的故障测距算法。该算法基于不平衡分布参数模型,根据双回线同向网、反向网模电压沿线分布规律,利用逆拟牛顿迭代法确定故障点。算法在出现较大反向网模电流时,仅利用反向网模电流进行测距计算,尽量避免了提取电压所引入误差的影响。算法考虑了双端数据不同步的问题,不受系统阻抗和过渡电阻的影响,无需事先确定故障类型。Matlab仿真表明该算法具有较高的精度。更多还原

【Abstract】 According to the regularity of the voltage distributions along common component net and differential component net,the paper gives a new fault location algorithm for HV double transmission lines on the same tower,based on distributed parameter.It can solve fault location equations using inverse quasi-Newton-Laphson method.When there appears larger differential component net current,the algorithm only uses differential component net current to have prevented the influence of the error from acquiring voltage as far as possible.The algorithm considers the problem of the synchronized data of two terminals and does not require the fault type identification.It also can eliminate the influence of fault resistance and system impedance.The algorithm is proved to be correct and accurate by simulation results of Matlab.更多还原