Real-time Simulation Platform of DC Microgrid Fault Detection Based on FPGA

Abstract

Aiming at the problem of poor reliability and time certainty of microgrid offline simulation, combined with the characteristics of fast and time certainty of Field Programmable Gate Array (FPGA), the digital-analog hybrid real-time simulation platform of DC microgrid fault detection system based on FPGA was studied. The platform is composed of FPGA real-time digital simulation system, photovoltaic (PV) and energy storage control system, microgrid energy management system that can plan system operation modes and detect faults. The multi-step decomposition method is used to realize the reasonable distribution of computing power. In this platform, the hardware is composed of NI-PXIe-8840 real-time controller, PXIe-7868R FPGA, PXI-8512CAN and upper computer, and the software is included Simulink simulation software, Veristand experiment management software and Opal-RT toolkit, which can verify and study key technologies such as fault detection algorithm and energy management strategy of DC microgrid.