一种分布式母线保护的新型通信方案

分布式微机母线保护将成为微机型母线保护的主要发展方向,实现分布式微机母线保护需要解决实时通信和同步采样的问题。基于此,文章提出了一种新型光纤双环通信网, 各保护单元之间采用令牌环式的通信标准,并且采用了一种软硬件相结合的同步对时方案。该通信网络通信速率高,结构简单,可靠性高,性能优越,同步方法精度高,可满足分布式母线保护的要求。

A New Communication Scheme for Distributed Busbar Protection

Distributed microcomputer based busbar protection will become principal trend of microcomputer based busbar protection. To implement distributed microcomputer based busbar protection, it is necessary to solve the problems in real-time communication and synchronous sampling. For this purpose, a new optic-fiber double-loop communication network is proposed, in which the token-ring communication standard is adopted among protection units and a synchronous time comparison scheme based on the integration of software with hardware is used. The proposed communication network can carry out high-speed communication, it possesses following advantages: simple and reliable architecture, high performance and accurate synchronizing approach, so this communication network can satisfy the requirement of distributed busbar protection.