继电保护中光纤通信技术应用

结合高压线路保护装置光纤电流差动WXH-803光纤接口,对高压线路继电保护中光纤通信系统进行了分析,特别研究了光纤通道的专用方式、64 Kbit/s复用方式和2 Mbit/s复用方式等连接方式的通信体系结构,以及在以上3种连接方式下光纤通道通信性能的各种影响因素,其中包括光端机及复用设备的时钟方式、光接收功率、光发送功率、光饱和功率、通信通道裕度、电磁屏蔽措施和设备匹配等关键技术并对其进行了分析探讨,最后对继电保护光纤通信应用中通道连接状态进行了介绍,并总结了常见问题的简单处理方法。

Application of optical fiber communication in relay protection

Taking current differential protection WXH-803 as an example,the optical fiber com-munication system of HV(High Voltage) line protection is analyzed,especially the communication system architecture of special optical fiber channel mode,64 Kbit / s multiplex mode and 2 Mbit / s multiplex mode.Different influences on optical fiber communication performance under above three communication modes are studied,including the clock mode of optical terminal and mul-tiplex equipment,the optical receiving power,the optical transmitting power,the optical saturation power,the margin of communication channel,the electromagnetic-shield manners,the equipment match and so on.The channel connection status is introduced,and general problems in optical fiber communication system for relay protection and simple countermeasures are summarized.