敏感系数的定义对干扰噪声计算的关联  

Impact of the Definition of Sensitive Coefficient on Calculation of Interference Noise

作　　者：熊万洲[1] 赵远涛[1] 谢星[1] 赵世雄[2] 

机构地区：[1]中南电力设计院,湖北武汉430071 [2]广东省电力设计研究院,广东广州510663

出　　处：《电力信息与通信技术》2014年第5期10-13,共4页Electric Power Information and Communication Technology

基　　金：国家能源局2012年行业标准制(修)订计划(能源20120014)

摘　　要：敏感系数客观上反映了电信线路两导线的平衡度,是评估受输电线路干扰影响程度的重要参数,应有明确统一的量化定义。根据电信线路受干扰影响机理,分析了对地不平衡的含义,比较了ITU-T导则与我国相关标准对其定义的差异,论述了它对干扰噪声计算的密切关联度。在相同公式中,不平衡度采用纵横向变换比,计算结果为噪声计电压;采用敏感系数,其计算结果为噪声计电动势,两者不能混淆使用。建议在将来的相关标准制定中,重新定义敏感系数概念,与ITU-T导则保持一致。As an important factor to evaluate the interference level caused by transmission lines for telecommunication lines, the sensitive coefficient indicates the degree of balance of two lines of telecommunication lines objectively. Therefore, it＇s necessary to be quantified. According to the principle of disturbing influence for telecommunication lines, this paper analyzes the meaning of disequilibrium to the earth, describes the difference of the definition of disequilibrium between ITU-T guide rule and our country＇s related standards, and discusses its impact on calculation of interference noise. As for the calculation formula, the calculation result will be a psophometric voltage if the longitudinal to transverse conversion ratio is used, while the result will be a psophometric Emf if sensitive coefficient is used. It＇s unsuitable to confusingly use these formulas. As a result of that, this paper gives a suggestion to redefine sensitive coefficient in the future standard establishment and to make it consistent with that of ITU-T.

关 键 词：电信线路 平衡度 输电线路 干扰噪声 纵横向变换比 敏感系数 噪声计电压 

分 类 号：TN911.4[电子电信—通信与信息系统] TM723[电子电信—信息与通信工程]