数字化保护逻辑分析单元的研制

Development of digitalized protection logic analyzing unit

数字化保护逻辑分析单元包含保护逻辑记录单元和保护逻辑辅助分析单元。保护逻辑记录单元采用基于PowerPC8270的硬件平台和基于嵌入式Linux操作系统的软件平台,实时监视二次保护单元GOOSE网的虚遥信变位(即保护单元逻辑动作变位),启动波形文件记录。保护逻辑辅助分析单元提取和打开波形文件,通过分析波形时序图,再现故障时保护单元逻辑动作过程。

The digitalized protection logic analyzing unit adopts hardware plat based on PowerPC8270 and software plat based on embedded Linux operation system. The unit watches the GOOSE net dummy telesignalization changing bit in real time （protection unit logic action changing bit）, and starts up wave file recording.The protection logic assistant analyzing unit distills and opens wave file to reproduce protection logic action process in the fault by analyzing wave time-sequence graph.