Power System Disturbance Detection Method Considering PMU Data Quality Problems

被引：0
|
作者：
Li Z. [1 ]
Liu H. [2 ]
Bi T. [2 ]
Yang Q. [2 ]
机构：
[1] State Grid Shanghai Urban Electric Power Supply Company, Hongkou District, Shanghai
[2] State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Changping District, Beijing
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2024年 / 44卷 / 02期
基金：
中国国家自然科学基金;
关键词：
bad data; data quality problems; disturbance detection; synchronous phasor measurement;
D O I：
10.13334/j.0258-8013.pcsee.222149
中图分类号：
学科分类号：
摘要：
Fast and accurate power system disturbance detection can provide effective guidance information for subsequent disturbance analysis, and the wide area measurement system (WAMS) is widely used to provide a powerful data base for disturbance detection. Based on PMU measurement data, this paper proposes a disturbance event detection method considering PMU bad data. First, the behavioral characteristics of PMU abnormal data are analyzed to reveal the differential characteristics of disturbance events and PMU bad data. Furthermore, a PMU abnormal data initial screening method based on the combination of differential Teager-Kaiser energy operator and 3Sigma criterion is proposed to avoid the problems of low intensity disturbance miss detection and repeated detection of disturbances. Then, the dynamic time warping and the maximal information coefficient are used to calculate the spatio-temporal similarity among different PMUs and the correlation among different measurements within the same PMU, respectively. And it is used as features to characterize the differences of disturbance events and PMU bad data. Finally, the obtained comprehensive metrics are analyzed by a local outlier probability algorithm to achieve accurate detection of disturbance events in scenarios containing PMU bad data. Based on the IEEE 39 system, the actual grid model and the filed PMU data, the proposed method is verified to have good accuracy, real-time and generalization capability. ©2024 Chin.Soc.for Elec.Eng.
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收藏
页码：451 / 463
页数：12
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