NDLI: Measurement-based correlation approach for power system dynamic response estimation

Content Provider	IET Digital Library
Author	Bai, Feifei Liu, Yong Chao Liu, Yilu Sun, Kai Bhatt, Navin Rosso, Alberto Del Farantatos, Evangelos Wang, Xiaoru
Abstract	Understanding power system dynamics is essential for online stability assessment and control applications. Global positioning system-synchronised phasor measurement units and frequency disturbance recorders (FDRs) make power system dynamics visible and deliver an accurate picture of the overall operation condition to system operators. However, in the actual field implementations, some measurement data can be inaccessible for various reasons, for example, most notably failure of communication. In this study, a measurement-based approach is proposed to estimate the missing power system dynamics. Specifically, a correlation coefficient index is proposed to describe the correlation relationship between different measurements. Then, the auto-regressive with exogenous input identification model is employed to estimate the missing system dynamic response. The US Eastern Interconnection is utilised in this study as a case study. The robustness of the correlation approach is verified by a wide variety of case studies as well. Finally, the proposed correlation approach is applied to the real FDR data for power system dynamic response estimation. The results indicate that the correlation approach could help select better input locations and thus improve the response estimation accuracy.
Starting Page	1474
Ending Page	1484
Page Count	11
ISSN	17518687
Volume Number	9
e-ISSN	17518695
Issue Number	Issue 12, Sep (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/9/12
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2014.1013
Journal	IET Generation, Transmission & Distribution
Publisher Date	2015-04-24
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Autoregressive Model Autoregressive Processes Correlation Coefficient Index Correlation Method Dynamic Response Exogenous Input Identification Model FDR Frequency Disturbance Recorder Global Positioning System Global Positioning System Synchronised Phasor Measurement Unit Measurement-based Correlation Approach Online Stability Assessment Phasor Measurement Power System Control Power System Dynamic Response Estimation Power System Dynamic Stability Power System Economics Power System Identification Power System Interconnection Power System Managemen Power System Measurement And Metering Power System Operation Statistics US Eastern Interconnection
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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