Design of Distribution Network FauIt TraveIing Wave SampIing and Denoising Based on FPGA
Traveling wave signal effective extraction is the precondition of analyzing distribution network grounding fault, in view of the distribution circuit ground fault, traveling wave signals have the characteristics of high bandwidth and strong background noise, designs traveling wave sampling and denoising processing system which used FPGA as main control chip. According to the characteristics that traveling wave ’s voltage changes big, proposes dual acquisition traveling wave solution, FPGA controlled the AD7626 sampling by using Verilog HDL pro-gramming, and through the FIR digital filter to complete the traveling waves denoising processing, stores the sample data into RAM for DSP to read. Through simulation and actual test, it shows that the acquisition system works stable, collects data accurately, and has good effect after denoising processing, it has the engineering application value.
NETL
NSTL
万方数据
维普
