文中的目的是为了研究双向工频通信系统的出站信号的调制和解调方法.应用Matlab/Simulink仿真工具建立了10kV配电网的仿真模型及用来对信号进行发送的信号调制模块和用来对信号进行解调的信号检测模块,根据信号特征选取了合适的最优线性相位滤波器和信号的编码方法,实现了出站信号的提取,将数字载波通信中相干解调方法应用到工频通信系统中,实现了信号的解调.仿真结果验证了所提出的信号调制及检测算法的正确性.结论说明了双向工频通信技术在我国农村10kV配电网中应用的可行性.%It introduced the basic principle of two-way automatic communication system and method of modulation and demodulation of outbound signal,and used Matlab / Simulink simulation tool to establish a lOkV distribution system simulation model and used to send the signal modulation module and used to signal demodulation of the signal detection module. According to the basic principle of TWACS, the optimum linear-phase FIR filter is designed and the appropriate signal coding manner is implemented. Outbound signal abstraction is implemented. The coherent demodulation algorithm is applied to TWACS signal processing. According to error control through communication process,produce three methods of controlling errors through signal transmitting process,simulation results verify the signal modulation and detection algorithm is correct. Designed hardware circuit and software flow, and the feasibility of TWACS in 10kV power distribution networks was validated.
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