线路光纤差动保护调试及通道异常处理的方法研究

Study on the differential protection(DP) debugging of the optical fiber and the channel anomaly processing method

光纤通道由于具有抗电磁干扰强、可靠性高、衰耗低等优点,已广泛运用到66 k V及以上电压等级的线路保护中。以PLS603光纤差动保护为例,详细阐述了其差动逻辑原理及其现场保护调试及联调方案。并探讨了在实际运行过程中,保护装置发出"通道异常"的原因及基本的处理方法。

Fiber channel has been widely used in the line protection fields of 66 k V and above voltage classes,due to its＇ advantages,such as anti-electromagnetic interference,reliability and low attenuation. APLS603 fiber DP is taken as an example. The DP logic principle is described,and on-site single debug and channel joint debugging schemes are introduced. The basic reasons and treatment methods are also discussed when the channel anomaly of the protection device occurs during the actual operation.