NDLI: Criterion to evaluate power system online transient stability based on adjoint system energy function

Content Provider	IET Digital Library
Author	Zhao, Shuai Jia, Hongjie Fang, Dazhong Jiang, Yilang Kong, Xiangyu
Abstract	In this paper, a new criterion to quickly evaluate the system transient stability based on wide area measurement system (WAMS) information, energy function method and adjoint power system (APS) model is proposed. APS is a two-dimensional-first-order differential equation model, which can be considered as a virtual representation to the real power system. Meaning of APS is first explained by using the one machine infinite bus system. Then, a new criterion based on projection kinetic energy of APS is proposed to determine the transient stability of the original power system with multiple generators. Trajectory prediction method based on curve fitting technique is adopted to accelerate the evaluation process. The proposed method is sufficiently rapid since it does not rely on the network structure, system model, system parameters and the identification of the coherent generator groups. Therefore, it can be utilised for online transient stability assessment based on WAMS. Simulation results on the New England system and one of North China Power System validate the correctness and effectiveness of the proposed method.
Starting Page	104
Ending Page	112
Page Count	9
ISSN	17518687
Volume Number	9
e-ISSN	17518695
Issue Number	Issue 1, Jan (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/9/1
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2014.0085
Journal	IET Generation, Transmission & Distribution
Publisher Date	2014-08-29
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Adjoint Power System Model Adjoint System Energy Function Curve Fitting Curve Fitting Technique Differential Equation (numerical Analysis) Energy Function Method Interpolation And Function Approximation Numerical Analysis Power System Measurement Power System Measurement And Metering Power System Online Transient Stability Power System Transient Stability Two Dimensional First Order Differential Equation Model Wide Area Measurement System Information
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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