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随着电力工业的不断发展,电力通信系统的要求也不断提高,不但要求传输传统的远动信息,而且新增了继电保护信息、故障录波信息、电能量采集系统信息、电力市场信息、变电站视频监控信息等大量信息,这就要求电力通信网络具有更快的传输速率和更高的可靠性。数字通道的出现和发展很好的满足了现代电力通信需求。然而,现有数字通道的组网方案组网方式单一,只能提供点到点的组网方式,在局端需放置多个与站端对应的背靠背设备,用以信号的复用和解复用,这样局端机房将会堆叠大量的解复用设备,占用了机房大量配线单元、传输线缆、机房空间等资源,造成机房的布线混乱,线路转接成本居高不下,同时增加了潜在的故障点。针对以上问题提出了新型数字通道组网方案,此方案使用数字接口转换器设备替代了现有方案中大量的局端E1转换器、调制解调器和串口服务器等设备,从而节省了机房空间和配线单元,同时数字接口转换器具有的统一的网管平台,可以对PDH设备实现集中监控,提高了系统的可用性和可靠性。
With the continuous development of the power industry, the requirements of the power communication system are also constantly increasing. Not only transmission of traditional telematics information is required, but also information such as relay protection information, fault recording information, electric energy collection system information, power market information, Substation video surveillance information and a lot of information, which requires the power communication network with faster transfer rate and higher reliability. The emergence and development of digital channels to meet the modern power communication needs. However, the networking scheme of the existing digital channels has a single networking mode and can only provide a point-to-point networking manner. Multiple back-to-back devices corresponding to the station end are required to be placed on the central office side for signal multiplexing and demultiplexing So that the central office will be stacking a large number of demultiplexing equipment, taking up a large number of room wiring unit, transmission cables, room space and other resources, resulting in confusion in the wiring room, the high cost of switching lines, while increasing the potential The point of failure. In view of the above problems, a new digital channel networking scheme is proposed. This scheme replaces the large number of central office E1 converters, modems, and serial port servers with digital interface converter equipment to save room space and wiring units , While the digital interface converter has a unified network management platform that enables centralized monitoring of PDH equipment to improve the system availability and reliability.