基于故障附加网络的故障分量算法

Fault component analysis in super-imposed networks

为深入认识和利用故障分量,提出了以故障分量为求解和分析对象的故障分量计算方法,它根据故障附加网络和故障分量在故障点的边界条件建立网络方程,并使用Newton法求解该方程。所提方法的特点是物理意义明确,省去了由故障全量导出故障分量的中间过程。编程计算结果表明所提算法快速、准确。该方法能够用于计算复杂电力系统简单故障或多重故障的故障分量,也可用于分析和评判基于故障分量的继电保护和各种安全自动装置的性能。

An algorithm was developed to analyze fault components in complex power systems. The network equations described super-imposed networks with boundary conditions for the fault components at the fault point. The equations were solved with Newton's method. The algorithm has clear physical meaning and does not contain an intermediate procedure to derive fault components from post-fault quantities. The calculated results show that the algorithm is fast and accurate. The method can not only be used to analyze the fault components in complex power systems with simple or multiple faults, but can also be used to analyze the performance of protective relays and other automatic devices based on fault components.