Reconfigurable microcomputer protection development platform based on FPGA

Abstract

The invention discloses a reconfigurable microcomputer protection development platform based on an FPGA. The development platform is characterized by comprising an FPGA chip supporting a Microblaze soft core, an internal storage, an external storage, a parallel interface FRAM, a cache, an AD converter, a hardware frequency measurement circuit, a watchdog circuit, a level shifter, a real-time clock, an external communication interface, an internal communication interface and an Ethernet interface, wherein the external storage, the parallel interface FRAM, the cache, the AD converter, the hardware frequency measurement circuit, the watchdog circuit, the level shifter, the real-time clock, the external communication interface, the internal communication interface and the Ethernet interface are respectively connected with the FPGA chip through AXI buses; logical decoding and protection calculation are fused together, and work efficiency is improved greatly. Logic control is encapsulated to an independent IP core according to a functional unit, the IP core is provided with a simple command interface, accordingly, complex procedures are simplified, complicated operations on an external device can be completed through an application software program only via command words, and programming is simplified. The functional unit having high requirements for the speed and real-time performance is achieved through hardware description languages, the characteristics of parallel computation and access according to positions of the FPGA are fully utilized, and the requirement for protecting the speed and real-time performance of the platform is achieved.

Description

technical field [0001] The invention relates to a development platform based on FPGA reconfigurable microcomputer protection. Background technique [0002] Microcomputer protection is a relay protection composed of microcomputers. It is the development direction of power system relay protection. It has high reliability, high selectivity, and high sensitivity. The hardware of the microcomputer protection device includes a microprocessor (single-chip microcomputer) as the core. Equipped with input and output channels, man-machine interface and communication interface, etc. Widely used in electric power, petrochemical, mining smelting, railway and civil construction, etc. [0003] The traditional microcomputer protection development platform adopts the implementation method of custom CPU. Once the CPU is finalized, its available resources and ports are relatively fixed. Compared with FPGA, it lacks sufficient flexibility and scalability. The FPGA design method is highly inher...

AI Technical Summary

Problems solved by technology

[0004] In addition, the sampling control module of the traditional microcomputer protection directly transmits the sampling points to the protection module, and the logic decoding and arithmetic operations are performed separately, and the Fourier calculation is performed by the system application software, which takes up CPU running time; the watchdog technology adopts a task corresponding to For a watchdog chip, also takes up CPU runtime

System inefficiency

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