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介绍了国内外关于公众电话杂音允许值的相关标准,叙述了电力、电信和铁道各部门界定该限值的差异、分歧意见以及各方对统一认识、向高标准看齐的预期,结合特高压±800 kV直流输电工程放宽直流滤波性能指标、提高等效干扰电流数值的特点,指出了具体工程中的防护协调难度及协调建议。
This paper introduces the relevant standards of domestic and foreign public telephone noise allowance, describes the differences between the limits of electric power, telecommunications and railway departments, different opinions and expectation of all parties to unify understanding and meet the high standard. Combined with the UHV ± 800 kV DC transmission project to relax the DC filter performance index, to improve the characteristics of the equivalent interference current value, pointed out that the specific project coordination and difficulty of coordination and coordination advice.