PSL 600系列数字式高压线路保护采用数字通道的设计

简单介绍了PSL600系列保护和GXC－01光纤传输装置的基本原理。由于光纤技术在国内电力系统通信领域的广泛应用，利用光纤通道传输电保护信息已成为现实。在徐州220kV电网工程输变电线路设计中，为输电线路铺设了光纤通道，通过传统允许式和闭锁式的分析和比较，最终采用了PSL602和GXC－01这2套装置构成光纤通道的闭锁式保护。由于采用了闭锁式的光纤通道，提高了闭锁式纵联保护的可靠性。

Design of digital communication channel in PSL 600 series HV line protection

The elementary principle of PSL 600 series protection and GXC?01 optical fiber transmission device are introduced.Since the optical fiber technology has been widely applied in power system communication,transmitting protection information by optical fiber is put into practice.In Xuzhou 220 kV power network project,the optical fiber communication channel is designed for power transmission lines.Through the analysis and comparison of the traditional permissive logic and blocking logic,PSL 602 and GXC?01 are adopted to form the protections with optical fiber communication channels and blocking logic.It improves the credibility of pilot protection.