Curvature Quantified Douglas-Peucker-based Phasor Measurement Unit Data Compression Method for Power System Situational Awareness  

作　　者：Weitao Tan Tianhan Zhang Yuanqian Ma Shengyuan Liu Li Yang Zhenzhi Lin 

机构地区：[1]College of Electrical Engineering,Zhejiang University,Hangzhou,China [2]Electrical Engineering and its Automation from Sichuan University,Chengdu,China [3]Electrical Engineering from Shandong University,Jinan,China [4]Electrical Engineering from Zhejiang University,Hangzhou,China [5]College of Electrical Engineering,Zhejiang University,Hangzhou 310027,China

出　　处：《Protection and Control of Modern Power Systems》2024年第2期128-137,共10页现代电力系统保护与控制（英文）

基　　金：supported by the National Natural Sci-ence Foundation of China(No.52077195).

摘　　要：Facing constraints imposed by storage and bandwidth limitations,the vast volume of phasor meas-urement unit(PMU)data collected by the wide-area measurement system(WAMS)for power systems cannot be fully utilized.This limitation significantly hinders the effective deployment of situational awareness technologies for systematic applications.In this work,an effective curvature quantified Douglas-Peucker(CQDP)-based PMU data compression method is proposed for situational awareness of power systems.First,a curvature integrated distance(CID)for measuring the local flection and fluc-tuation of PMU signals is developed.The Doug-las-Peucker(DP)algorithm integrated with a quan-tile-based parameter adaptation scheme is then proposed to extract feature points for profiling the trends within the PMU signals.This allows adaptive adjustment of the al-gorithm parameters,so as to maintain the desired com-pression ratio and reconstruction accuracy as much as possible,irrespective of the power system dynamics.Fi-nally,case studies on the Western Electricity Coordinat-ing Council(WECC)179-bus system and the actual Guangdong power system are performed to verify the effectiveness of the proposed method.The simulation results show that the proposed method achieves stably higher compression ratio and reconstruction accuracy in both steady state and in transients of the power system,and alleviates the compression performance degradation problem faced by existing compression methods.Index Terms—Curvature quantified Douglas-Peucker,data compression,phasor measurement unit,power sys-tem situational awareness.

关 键 词：Curvature quantified Douglas-Peucker data compression phasor measurement unit power sys-tem situational awareness 

分 类 号：TM73[电气工程—电力系统及自动化]