NDLI: Effective method to determine time-delay stability margin and its application to power systems

Content Provider	IET Digital Library
Author	Dong, Chaoyu Jia, Hongjie Jiang, Tao Bai, Linquan Hu, Qinran Wang, Lei Jiang, Yilang
Abstract	In an interconnected bulk power system, wide-area measurement system (WAMS) can provide abundant remote measurement for the coordinated control system. However, WAMS data have obvious time delays, which affect the performance of the control system and should be properly considered. Time-delay stability margin (TDSM) is an index to reflect the maximum delay that a time-delay system can sustain without losing its stability. To construct a coordinated control system based on WAMS data, it is crucial to accurately and rapidly determine the TDSM value. In this paper, a novel Jordan-Taylor-Schur (JTS) approach to determine the TDSM value of power system is proposed. It consists of three, Jordan standardization, Taylor separation and Schur simplification. With the three procedures of this method, the model dimension of time-delay system can be reduced, and the stability criterion derivation can be rebuilt to omit some unnecessary variables so that both the computational efficiency and accuracy can be boosted. Further, it is worth highlighting that the proposed method can be applied to various Lyapunov-based stability criteria to improve their efficiency with small errors. Finally, three power systems with time delays have been used to demonstrate the effectiveness of the proposed method.
Starting Page	1661
Ending Page	1670
Page Count	10
ISSN	17518687
Volume Number	11
e-ISSN	17518695
Issue Number	Issue 7, May (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/11/7
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2016.0953
Journal	IET Generation, Transmission & Distribution
Publisher Date	2017-02-06
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Computational Efficiency Control of Electric Power System Coordinated Control System Delay Delayed Power System Distributed Parameter Control System Interconnected Bulk Power System Jordan Standardisation Jordan Transformation Jordan–Taylor–Schur Approach Lyapunov Method Lyapunov-based Stability Criteria Power System Control Power System Economics Power System Interconnection Power System Managemen Power System Measurement Power System Measurement And Metering Power System Operation Power System Stability Remote Measurement Schur Simplification Sequencing Principle Stability Criterion Derivation Stability in Control Theory Taylor Separation TDSM Time-delay Stability Margin WAMS Wide-area Measurement System
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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