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《Power System Technology》 2006-S2
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A Novel Interface Solution to Sampled Values for Substation Intelligent Electronic Device

ZHOU Bin, SHEN Jian, ZHANG He, HUANG Guo-fang (NARI technology limited Company, Nanjing 210003, Jiangsu Province, China)  
With the development of electronic transformers and the extensive utilization of the international standard IEC61850, the sampled values technology in IEDs in substation bay layer will be developing from A/D conversion of analogue signals to ether net communication technology. In order to apply the traditional algorithms in IEDs in substation automation systems, the linear Lagrange interpolation algorithm is analyzed. The paper analyzes the feasibility of the algorithm of interpolating the sampled data from merging unit. The error analysis is presented. The effect of harmonic signal to the interpolation algorithm is also analyzed.
【CateGory Index】: TM63;TM764
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