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首页> 外文会议>International Conference on the Computation of Electromagnetic Fields >Solutions for the Ill-posed Problem of Inverse Calculating Three-phase Voltages of Overhead Transmission Lines by Using Power-frequency Electric Field Data
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Solutions for the Ill-posed Problem of Inverse Calculating Three-phase Voltages of Overhead Transmission Lines by Using Power-frequency Electric Field Data

机译：通过使用电力电力电场数据对截头传输线的三相电压的逆计算逆相电压的不良问题解决方案

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摘要

A new idea is proposed to realize the non-contacted voltage measurement of overhead AC transmission lines, which is to inversely calculate the voltage parameters by using the power-frequency electric field measurement data. However, the inverse calculation is serious ill-posed problem. Two-step solution is proposed to deal with the ill-posed problem. Firstly, the optimal positions of the measuring points are searched based on the particle swarm optimization algorithm. It can significantly reduce the condition number of observation matrix. Secondly, iterated Tikhonov regularization is used to further improve the calculation. The simulation results show that the proposed method can improve the accuracy and stability of the voltage parameters' identification even at a large noise level.
机译：提出了一种新思路来实现架空交流传输线的非接触电压测量，这是通过使用功率电场测量数据来反向计算电压参数。然而，逆计算是严重的弊端问题。提出两步解决方案来处理不良问题。首先，基于粒子群优化算法搜索测量点的最佳位置。它可以显着降低观察矩阵的条件数。其次，迭代的Tikhonov规则化用于进一步改善计算。仿真结果表明，该方法可以提高即使在大噪声水平上的电压参数识别的准确性和稳定性。

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