摘要
光纤保护在定检、旁代时 ,需要进行通道切换。文中介绍了几种通道切换方案 ,比较了它们的性能、实现的难易程度和使用的可行性。插拔尾纤法使用简便可靠 ,但需移动尾纤 ,较为不便。光开关切换法技术先进 ,但由于工艺和成本使得应用受到限制。脉冲编码调制 (PCM)时隙切换法使用方便 ,但只限于复用通道且需通信人员配合。光纤接线盒法综合了上述 3种方法的优点 ,并克服其不足 ,既简便可靠 ,又成本低廉 ,并可用于复用、专用光纤保护 。
Fiber protection must have channel switch during the routine maintainance or when bypass breaker is used as line breaker. Several channel switch schemes are discussed. The performance comparison, complexity and application feasibility of these schemes are also given. Receptacle fiber scheme is easily used, but need move the fiber, which is inconvenient. Fiber switcher scheme is a more advanced technology, but due to the manufacture technology and the high price, it is seldom used. PCM time-slot exchange scheme is also easily used, but it can only be used in multiplexing channel and needs the cooperation of communications. Fiber connection box scheme synthesizes the advantages of the above three schemes and overcomes their shortages. It is cheap and easily used and can be used in both multiplexing channel and fiber channel. It has been widely used now.
出处
《电力系统自动化》
EI
CSCD
北大核心
2003年第8期75-77,共3页
Automation of Electric Power Systems
关键词
光纤通信
光纤通道
光纤保护
通道切换
电力系统
脉冲编码调制
电力通信网
Communication channels (information theory)
Electric power system protection
Operations research
Optical fibers
Optical switches
