【作者】 王健；

【导师】 高曙；

【作者基本信息】 华北电力大学（北京） ， 电力系统及其自动化， 2003， 硕士

【摘要】 故障计算是电力系统分析计算中的重要内容。本文在变电站仿真培训系统复杂故障计算开发的过程中，对故障计算的算法模型进行了深入的研究，基于对称分量法和补偿原理，建立了故障计算的统一模型，在此基础上，根据叠加法和互易定理，提出了故障计算的通用方法，避免了修改原网络，既适用于各种简单故障，又适用于多重复杂故障。故障计算求解节点阻抗阵时，矩阵规模较大，而且是复矩阵求逆，速度受到严重影响，针对这一问题，笔者利用电流源向量的稀疏性和仿真系统对故障信息的需求特点，在故障计算中引入了稀疏向量技术，避免了不必要的计算，节省了大量的计算时间。同时，笔者对故障计算的并行实现做了有益的尝试和研究，以期提高故障计算的实时性能。更多还原

【Abstract】 Fault calculation is very important in power system analysis and calculation. In this paper， based on compensation method and the symmetrical components method， a unified model is established to calculate the faults of substation simulation and training system. On this basis， according to the superposition theory and the reciprocal theory， a versatile method to calculate faults is presented. Without modifying the nodal impedance parameters of the original network， the method is suited to all kinds of simple faults and complex faults. Fault calculation needs to constitute node impedance matrix. However， the constitution of node impedance matrix influences simulation speed because of the large-scale complex matrix inversion. Through analyzing current injection vector and simulation system features， the paper presents a fast algorithm for fault calculation. The algorithm can avoid irrelevant computation requirement in solving large sparse network equations， improve significantly the calculation speed， and save a lot of computation time. At the same time， in order to improve real-time ability of fault calculation， the application of parallel processing in fault calculation are discussed.更多还原