基于相分量法的电力系统复故障计算  

Simultaneous Fault Calculation for Power System by Phase Coordinates

作　　者：刘为雄[1] 蔡泽祥[1] 

机构地区：[1]华南理工大学电力学院

出　　处：《电力系统及其自动化学报》2007年第3期91-95,共5页Proceedings of the CSU-EPSA

摘　　要：为了对电力系统复杂故障直接进行求解,基于相分量法,建立了横向、纵向故障接口电路的通用相分量模型,推导了三相元件与平行线路的相分量阻抗矩阵。相分量算法不要求电力系统元件参数对称或循环对称、不利用多端口网络理论及理想变压器的移相,拓宽了故障计算的适用范围、简化了编程难度,并可推广到处理诸如线路换位不完全的参数不对称等其他电网不对称计算。算例演示了计算过程,与EM TP的仿真结果对比证实了模型与算法的正确性。The general models of the interface circuits for shunt and series faults and the impedance matrix of various 3-phase elements and parallel lines are constructed for the requirement of the simultaneous fault calculation for power system by using phase-component method. The proposed method can work well under asymmetry element parmeters,and it is not necessary to consider the phase shift of ideal transformer or using multi-port net theory ,which make the proposed method more applicable and simplify the calculation program. The method is also capable of handling various unsymmetrical calcuations^such as the fault calcuation for power system without complete transposition. The validity of the proposed algorithm is proved by comparing the simulation results obtained by EMTP and the proposed method.

关 键 词：电力系统 复故障计算 相分量法 节点导纳矩阵 

分 类 号：TM711[电气工程—电力系统及自动化]