MACH 2系统TDM通信接口的研究

Research of TDM communication interface of MACH2 system

介绍了基于MACH 2系统的TDM总线原理,并以柔性直流输电工程为背景,论述了TDM通信接口在高压直流输电中的具体研究与应用,详细描述了TDM时分多路复用通信方式的性能,并介绍了TDM通讯的编码形式以及校验方式。TDM通信采用IEEE-754标准编码,具有严格的校验方式,较高的可靠性和正确性。这种在一个传输介质上传输多路数字化信号的技术,在高压直流输电控制系统保护中,具有可靠、快速的特点,能够实现串行通信连接,单方向传输,具有单个发送源,一个或多个接收源。因此,TDM总线系统广泛应用于电力系统控制保护领域。

The principle of the TDM bus of the MACH2 system is described in this article. Taking flexible DC power trans-mission projeet as the background, the application of the TDM communieation interface in HVDC is discussed. The performance of the TI）M time division multiplex communication mode is described in detail. The coding form and verification mode of TDMcommunication are introduced. TDM communication according to IEEE-754 standard coding has the strict check way, high re- liability and validity. This technology that transmits multiplexer digitized signals in a same transmission media has reliable and fast features in the the HVDC control system protection, which can realize the serial communication links and single direction transmission. It has a single transmitting source, and one or more of the reeeixing source. Therefore, the TDM bus system is widely used in the areas of power system control and protection.