【摘要】 介绍了我国配网的主要设备和负载对双向工频通信远离配变处上行信号频率特性的影响,包括配电变压器、配电电缆的横截面积和长度以及负载系数;研究了上行调制回路的截止频率与配变容量、配电电缆的横截面积、配电电缆的长度和负载系数的关系,提出了远配变处上行信号调制回路的截止频率和频率特性主要取决配电电缆的横截面积和配变容量。针对我国配网的一般情况,给出了上行调制信号的截止频率的通用曲线,使上行调制回路的信号分析、处理和控制十分简单方便。更多还原

【Abstract】 This paper introduces the effects of the main equipments and loads in distribution network on TWACS(Twoway Power Frequency Automatic Communication System),including the factors of the capacity of transformer,the length and cross-section area of the cable and the load coefficient.It discusses the relationship between the cut-off frequency and capacity of distribution transformer,the length and cross-section area of the cable as well as the load coefficient.The cut-off frequency and the spectrum are mainly decided by the cross-section area of the cable and capacity of distribution.The common curve of the cut-off frequency for the outbound signal is given in the paper.更多还原