舰船交流环形电力网络短路电流计算

根据舰船交流环形电力网络的特点,提出了一种简单有效的短路电流计算方法。该算法以电站为独立单元,依据网络结构和系统参数分别对发电机和电动机进行等效,利用星网等值变换将环形电力网络简化为各电源直接与短路故障点通过阻抗相连的形式,然后通过短路电流改进算法计算故障点的电流。仿真结果表明,该算法准确度较高,满足实际工程要求,为复杂结构独立电力系统的短路电流计算开辟了一条新途径。

Short-circuit current calculation for naval alternating current loop power network

According to the characteristics of naval alterrating current loop power network, a simple and effective short-circuit current calculation method is put forward. It regards each power station as a unit, using "equivalent generators" and "equivalent motc rs" to describe the power station, then simplifies looped power network in the form that electrical source and fault connect directly by impedance and calculates short-circuit currents in an improved way. The result of simulation indicates that the method is accurate enough for engineering. It breaks a new path for short-circuit current calculation of isolated power system with complex construction.