多核DSP在就地化保护测试中的关键技术研究

针对智能变电站就地化保护测试面临的数据高速传输和实时处理问题，分析了就地化保护高可靠性无缝冗余(HSR)环网多子机的测试模型。评估了报文类型、大小以及传输速度等要求，设计了基于多核数字信号处理器(DSP)的硬件整体解决方案。在多核DSP软件实现上，将任务分解并映射到各个核心进行并行处理。使用核间通信(IPC)中断和共享内存实现核心间快速数据迁移，基于串行高速输入输出口(SRIO)完成高速报文传输。通过对报文计算、缓存、传输速度和可靠性等环节进行测试验证。结果表明，多核DSP的性能满足就地化保护测试所需的数据计算和吞吐量需求。

Research on key technologies of multi-core DSP in outdoor installation protection testing

Given the problems of high-speed transmission and real-time processing of outdoor installation protection testing data in a smart substation, a test model of multiple sub machines in a High-Availability Seamless Redundancy (HSR) loop network is analyzed, the requirements of packet types, size and transmission speed are evaluated, and a hardware solution based on a multi-core Digital Signal Processor (DSP) is designed. In the software implementation, the tasks are decomposed and mapped to each core for parallel processing, and testing data are shifted quickly between cores by Inter-Processor Communication (IPC) interrupt and shared memory. Packet data are transferred at a high rate based on Serial RapidIO (SRIO). Testing and verification are performed for the organization and buffered packages, transmission speed and reliability. The results show that the performance of multi-core DSP meets the requirements of data process and throughput in outdoor installation protection testing.This work is supported by Science and Technology Project of State Grid Zhejiang Electric Power Company Ltd. (No. 5211DS18002T) and Science and Technology Project of State Grid Corporation of China (No. 5100-201946264A).