一种同杆架设多回线路简化零序互感计算方法

摘要

提出一种同杆架设多回线零序互感计算方法,指出线路的零序互感矩阵是一组独立的参数,线路不同运行方式下的零序参数可根据这些独立参数,由矩阵变换的方法计算得到.该方法不需要重复的试验实测,极大简化了零序互感参数的获取过程,提高了工作效率.同杆4回线路实际现场测试实例结果验证了该方法是正确的,且具有较高的精度.%A method for calculating the zero-sequence mutual inductance of multi-circuit parallel transmission line on the same tower is proposed.It is pointed out that,the zero-sequence mutual inductance matrix is a set of independent parameters,based on which,the zero-sequence parameters of transmission line in different operation modes can be deduced by matrix transformation.Without the repeating experimental measurement,the proposed method simplifies significantly the acquisition of zero-sequence mutual inductance,which improves the work efficiency.Results of field test for a four-circuit parallel transmission line show its correctness and accuracy.