直流输电线路等效干扰电流限值的研究

Study on Equivalent Disturbing Current Limitation Criteria for HVDC Transmission Lines

研究了衡量直流输电线路电话干扰水平的等效干扰电流标准 ,根据国内电话回路上杂音电动势的允许值和设定的直流输电线路对电话回路电磁干扰的“典型最坏情况” ,导出了等效干扰电流限制值的范围。

In this paper, the equivalent disturbing current, which determines the harmonic interference noise nearby the telephone circuits, is studied systematically. The equivalent disturbing current limitation criteria are identified based on the tolerable noise level of China and assumptions regarding typical 'worst case' coupling condition between a HVDC transmission line and a telephone system.