电力系统故障的计算机新算法

本文提出了计算电力系统对称和不对称故障的一种新算法,其特点是数学模型非常简单,既可计算正常潮流又可计算故障潮流,把正常潮流和故障潮流统一在一个数学模型中.

A New Computer Algorithm for Power System Fault Calculation

A new algorithm for the calculation of the symmetrical or asymmetrical faults of power system is proposed. The mathematical model developed can be used to calculate both the fault load flow and the normal load flow. The difference between normal and fault load flow calculation lies in the handling of the source voltages. According to the nature of fault, a positive sequence network alone or all three sequence networks are required. Volt-ages at all nodes and fault currents can be directly calculated from the equation I = YV. Unlike the commonly used fault analysis algorithm, with this model, it is easier to take any elements such as resistances, capacitances, short circuit impedances as well as the loads into account, while there is no need for forming an impedance matrix.