船舶环形供电网络的短路电流计算

Calculation of Short-circuit Current in Marine Loop Power Supply Network

船用环形供电网络短路电流的研究目前处于初级阶段 ,本文使用等效发电机法和状态方程迭代求解法对环形网络的短路电流进行了研究。等效发电机法可通过发电机与阻抗串联等效和不同型号发电机并联等效将网络简化 ,从而求得短路电流。迭代求解法中 ,供电网络模型由状态方程表示 ,离散后求解 ,仿真中利用了MATLAB的强大数值计算功能 ,方便地分析各支路电流。最终给出了两种方法得出的计算结果及仿真曲线 ,为研究更复杂的环形及网型网络短路电流打下了基础。

The present research on short circuit current of marine loop power sup ply network is to be improved.In the paper,two methods,i.e.the equivalent genera tor method and the state equation iteration solving method are set forth for th is problem. The equivalent generator method can simplify the network by regardi ng a generator and a series resistance as an equivalent generator or by regarding two or more generator as a single equivalent generator and thereby the short c i rcuit current can be calculated.In the state equation method,models of the netw ork that is represented by state equations may be first made to be discrete and then calculated.In our simulation,the powerful calculation function of MATLAB is used to analyze facilely the current in branches.Finally,the results of the two methods and the curves obtained in simulation are given.This paper may be helpf ul to study short circuit current of more complicated loop power supply network s.