双端非同步数据故障测距的非线性估计算法被引量：17

A nonlinear-estimation algorithm for two-terminal fault location on asynchronous data

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摘要提出了一种基于双端非同步数据的不受故障性质和类型限制的故障测距新方法。该方法依据从两侧观测到的故障点电压各次分量的序分量相等的特点构造了6N维观测方程,采用非线性状态估计的方法求解其在最小二乘意义下的最优解。仿真表明,算法具有较好的稳定性、较大的收敛域和较高的测量精度。 This paper puts forward a novel fault location algorithm on asynchronous two-terminal data without limitation of fault types. On the basis of the equivalency of the sequence component of harmonic voltages estimated from two terminals on fault points, this paper offers a 6N-dimension-equation for fault location on asynchronous data and also applies a nonlinear states estimation method to calculate the minimum mean square optimal root. The simulation shows good stability and high accuracy of the algorithm.This project is supported by National Natural Science Foundation of Guangdong Province(No.990557).

作者徐鹏王钢李晓华张尧

机构地区华南理工大学电力学院

出处《继电器》 CSCD 北大核心 2005年第1期16-20,共5页 Relay

基金广东省自然科学基金项目(990577)

关键词故障测距观测方程非线性估计 fault location estimating equation non-linear estimation

分类号 TM744 [电气工程—电力系统及自动化]

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