基于FPGA的電子式互感器數(shù)據(jù)采集系統(tǒng)的設(shè)計(jì)
[Abstract]:Electric energy is the most important energy widely used in various fields of national economy. Power system plays an important role in the development of national economy, and its development and change are highly valued by countries all over the world, especially developed countries. In the 21 st century, smart grid has become a new direction of power system development. Intelligent digital substation is an important part of smart grid, which is used to measure, protect, control and other aspects of power equipment from analog signal transmission to digital signal transmission. As a result, electronic transformers emerge as the times require. Based on the IEC60044-7/8 standard of electronic current-voltage transformer and referring to the standard of IEC61850-9-1/2, the communication characteristics and functions of the acquisition system of electronic transformer are analyzed and studied in detail in this paper. FPGA AD7606 is used as the hardware platform. The design of 8-channel electronic transformer acquisition system is completed. Firstly, the FPGA peripheral hardware circuit of the acquisition system is designed, including AD7606 peripheral circuit, optical fiber communication circuit and serial communication circuit. Then the system data acquisition module, data processing module and data sending module based on FPGA are designed. The Verilog HDL language is used to program and design the modules including second pulse validity detection, sampling pulse synchronous signal generation, AD7606 sampling data collection module; FIFO, FIR digital filter, CRC check code generation, FT3 data set frame data processing module. Manchester coding, UART serial transmission data transmission module, and Modelsim software to complete the functional simulation and verification of each module. Finally, the designed electronic transformer acquisition system based on FPGA is downloaded to the development board for experiment, and the actual collected and processed data is sent to the upper computer through the USB interface, and the FT3 data frame is accurately analyzed. The accuracy of the collected data meets the requirements and proves the correctness and feasibility of the design.
【學(xué)位授予單位】:西安理工大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類(lèi)號(hào)】:TM45;TP274.2
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