关于OPGW设计选型中的最大短路电流计算

Calculation on the Maximun Short - circuit Current in Design and Model Selection of OPGW

复合光缆地线（ＯＰＧＷ）设计选型中的一项主要工作是计算线路在发生单相短路故障时流经ＯＰＧＷ的最大电流。若采用简化工程计算方法，一定要注意该方法的适用范围和计算精度；采用相参数法建立电路模型，利用计算软件可以确切算出各支路上的短路电流，由此可以较合理地选择ＯＰＧＷ的型号。

one of the major jobs in design and model selection of the compound optical ground wire (OPGW) is to calculate the maximum current of the line passing through OPGW as the single - phase short circuit failure occurs. If the simplified engi- neering calculation method is used, attention should be paid on the applicable range and calculation accuracy of the method. If the circuit model is established by means of the phase parameter method,the short circuit current at every branch can be accurately calculated with computation software, theefore, the OPGW model can be reasonably selected.