基于片上系统的可配置微机保护硬件平台设计与实现

片上系统(SOC)的设计是以模块复用和软硬件协同设计为基础，基于平台的设计则以新产品开发中尽量减少模块的重新设计并尽量少增加新的模块为出发点。文中提出了基于SOC的可配置微机保护硬件平台的设计方法和具体实现，该平台由FPGA和微处理器以及相关接口构成。由于FPGA有可重复编程的特点，不仅芯片中的保护算法、通信模块等可以重新配置，构成SOC骨架结构的模块也可以重新配置。微处理器是F1ash结构，也支持在线修改，因此该平台的应用非常灵活，极大地缩短了新产品的开发周期。文中给出平台应用的3种典型配置方案，其应用领域涉及从基本的电流三段式保护到基于小波变换的变压器暂态保护等方法。

DESIGN AND IMPLEMENTATION OF RECONFIGURABLE HARDWARE PLATFORM BASED ON SOC DESIGN FOR DIGITAL PROTECTIVE RELAY

The SOC design methodologies are based on IP reuse and hardware/software co design. platform based SOC design methodology is a method of configuring architectural components as well as VCs through parameterization that minimizes or eliminates the need for manual modification. A reconfigurable Hardware Platform Based on SOC Design for Digital Protective Relay is presented. It combines the FPGA and the Flash MCU and related interface circuit. Because of the reconfigurability of FPGA, not only the protection algorithm blocks and communication blocks, but also the architectural components can be reconfigured. What's more, the Flash MCU supports program on line. So, this platform is very flexible for new digital protective relay development. As examples, this paper presents three typical configuration cases of this platform, it's application ranging from fundamental over current protection to power transformer transient protection algorithm based on wavelet transform.