Key Technologies Development of Transient Signals Based Protection Device Using DSP and S-Transform

2017 2nd Asia Conference on Power and Electrical Engineering

能源学;电工学

Liu, Xingmao^1 ; Zheng, Gao^2

Control Engineering College, Chengdu University of Information Technology, Chengdu

610225, China^1

Department of Electromechanical Management, China Maritime Police Academy, Ningbo

315801, China^2

关键词: Analog to digital converters;    Dynamic simulation experiment;    Hardware and software designs;    Multichannel data;    Protection algorithms;    Protection device;    Simultaneous Sampling;    Traveling-wave signals;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/199/1/012131/pdf
DOI  :  10.1088/1757-899X/199/1/012131

来源: IOP

【 摘 要 】

The correctness of new principle of transient signal based protection used to be verified by simulating. In order to further introduce the dynamic simulation experiments for the transient signal based protection algorithm, the key technologies of transient signal based protection device were developed. The hardware of the synchronous multi-channel data acquisition and high-speed data processing was designed with kernel of high speed floating point digital signal processor TMS320C6748 and simultaneous sampling analog-to-digital converter. The sampling program reads the AD conversion data using DMA mode, which reduce the consumption of CPU time. The S transform was used to extract the fault traveling wave signals from the sampled data. The time consumption of algorithm which extract the traveling wave was analyzed when it ran on TMS320C6748. The test result shows that the hardware and software design is feasible.