Accurate Multipoint Synchronous Measurement Scheme of AC Electric Fields

doi:10.1109/CEI57409.2022.9950100

	Accurate Multipoint Synchronous Measurement Scheme of AC Electric Fields
	Du, Xuefei
	2022
会议录名称	2022 2nd International Conference on Computer Science, Electronic Information Engineering and Intelligent Control Technology, CEI 2022
页码	5-10
会议名称	2nd International Conference on Computer Science, Electronic Information Engineering and Intelligent Control Technology, CEI 2022
会议日期	September 23, 2022 - September 25, 2022
会议地点	Virtual, Online, China
出版者	Institute of Electrical and Electronics Engineers Inc.
摘要	Based on the measured electric field data at several appropriate points adjacent to AC transmission lines, the voltages on the lines can be inversely calculated, which will greatly facilitate the condition monitoring of overhead transmission lines. The difficulty of the technique lies in the accurate synchronous measurement of multipoint electric fields. When the measurement is started by sending a command to the measuring device, there will be a problem of unsynchronization in the process of receiving and processing instructions by the measuring device, which will lead to the failure to realize the requirement of synchronous starting. And when the frequency of the oscillator crystal mounted on multiple measurement devices drifts, the synchronization accuracy of the measured electric field data is not high due to the different time rhythms, which leads to inaccurate voltage inversion. In this paper, 1PPS from the GPS receiver is used to provide a unified time standard for the measurement device. In the FPGA, the accumulation method is used to divide the 1PPS into the sampling clock of the required frequency, and the sampling pulse starts to be generated on the next 1PPS rising edge after the starting command. This scheme can not only realize the simultaneous start of acquisition by multiple measurement devices, but also reduce the time error caused by the oscillator crystal. The measurement error and its influence factors are analyzed by simulation and experiment. Finally, three electric field measurement devices are applied in the experiment, and the validity of the multipoint synchronous measurement scheme is verified. © 2022 IEEE.
关键词	Condition monitoring Electric lines Errors Global positioning system AC electric field AC transmission lines Accumulation method Field data Frequency division Measurement device Measuring device Multi-points Multiple measurements Synchronous measurements
DOI	10.1109/CEI57409.2022.9950100
收录类别	EI
语种	英语
EI入藏号	20224913219286
原始文献类型	Conference article (CA)
文献类型	会议论文
条目标识符	https://ir.cqcet.edu.cn/handle/39TD4454/14338
专题	电子与物联网学院
作者单位	School of Electronics and Internet of Things, Chongqing College of Electronic Engineering, Chongqing, China
第一作者单位	重庆电子科技职业大学
推荐引用方式 GB/T 7714	Du, Xuefei. Accurate Multipoint Synchronous Measurement Scheme of AC Electric Fields[C]:Institute of Electrical and Electronics Engineers Inc.,2022:5-10.