摘要
针对当前缺少一种有效的测试设备来量化评估电力系统中电子设备间的时间同步误差对电力系统自动化设备的影响(如造成误动误报等异常现象)。利用电口、光口和网口的工作原理研制了一种基于FPGA的时间同步可控测试仪,提供了UART串口报文授时、IRIG-B时间编码授时、IEEE-1588网络报文授时这三种授时功能。通过控制外部设备与主时钟装置间的时间差,达到调整设备之间的时间差的目的,从而完成设备之间同步时间误差导致设备异常的量化评估,为电力系统制定统一的时间同步系统提供重要的参考价值。
With electrical interface and optical interface and network interface working principle,this paper develops a clock synchronization controlled tester based on FPGA due to the lack of an effective test equipment to evaluate the clock synchronization error of the electronic automation equipments in the power system which has a negative impact on the power system.The tester provides three timing functions,namely,a UART serial packets timing,IRIG-B code timing and IEEE-1588 network packets timing.By controlling the time between the external device and the master clock device,it achieves a quantitative assessment of the clock synchronization error which will lead to equipment malfunction,and provides an important reference to the power system when formulating a unified time.
出处
《电测与仪表》
北大核心
2013年第7期96-100,122,共6页
Electrical Measurement & Instrumentation
