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Title: A Normal Form-Based Power System Out-of-Step Protection

Journal Article · · Electric Power Systems Research

This paper proposes a new system-level application for monitoring out-of-step (OOS) events in power systems. As already known, amplitude-dependent frequency shift is a nonlinear phenomenon of electromechanical oscillations under large disturbances. The frequency shift indicates the system's nearness to instability. This new tool utilizes the Normal Form method to identify the named phenomenon, leading to accelerated OOS detection. The proposed strategy is illustrated and compared to the equal-area criterion method in a single-machine-infinite-bus power system. Extensive tests on IEEE 3- and IEEE 50-machine power systems prove the efficacy and potential of the proposed method for online warnings of instability and ranking of vulnerable system modes.

Research Organization:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE National Renewable Energy Laboratory (NREL)
DOE Contract Number:
Report Number(s):
NREL/JA-5C00-80262; MainId:42465; UUID:bb0f2485-7f10-4da9-b258-b24ef981a735; MainAdminID:63972
Journal Information:
Electric Power Systems Research, Vol. 208
Country of Publication:
United States

References (24)

Application of Equal Area Criterion Conditions in the Time Domain for Out-of-Step Protection journal April 2010
Online Application of Local OOS Protection and Graph Theory for Controlled Islanding journal May 2020
An Approach for Out-of-Step Protection Based on Swing Center Voltage Estimation and Analytic Geometry Parameters journal May 2020
Online Identification of Power System Dynamic Signature Using PMU Measurements and Data Mining journal May 2016
Characteristic Analysis and Calculation of Frequencies of Voltages in Out-of-Step Oscillation Power System and a Frequency-Based Out-of-Step Protection journal January 2019
Current-Based Out-of-Step Detection Method to Enhance Line Differential Protection journal April 2019
A Real-Time Out-of-Step Protection Strategy Based on Instantaneous Active Power Deviation journal December 2021
Adaptive Protection and Control in the Power System for Wide-Area Blackout Prevention journal August 2016
Transient Instability Prediction Using Decision Tree Technique journal August 2013
Generator Out-of-Step Prediction Based on Faster-Than-Real-Time Analysis: Concepts and Applications journal July 2018
A New Approach to Reduce the Nonlinear Characteristics of a Stressed Power System by Using the Normal Form Technique in the Control Design of the Excitation System journal January 2017
Assessing Placement of Controllers and Nonlinear Behavior Using Normal Form Analysis journal August 2005
Nonlinear Modal Decoupling of Multi-Oscillator Systems With Applications to Power Systems journal January 2018
Nonlinear Modal Decoupling Based Power System Transient Stability Analysis journal November 2019
An Accurate Third-Order Normal Form Approximation for Power System Nonlinear Analysis journal March 2018
Proposal of nonlinear stability indices of power swing oscillation in a multimachine power system journal January 2005
Hardening/softening behaviour in non-linear oscillations of structural systems using non-linear normal modes journal May 2004
Power System Nonlinear Modal Analysis Using Computationally Reduced Normal Form Method journal March 2020
A New Fast Track to Nonlinear Modal Analysis of Power System Using Normal Form journal July 2020
Recursive Linearization of Higher-Order for Power System Models journal March 2021
Formulation and Characterization of Power System Electromechanical Oscillations journal November 2016
A Decomposition-Based Practical Approach to Transient Stability-Constrained Unit Commitment journal May 2015
MATPOWER: Steady-State Operations, Planning, and Analysis Tools for Power Systems Research and Education journal February 2011
Determination of generator groupings for an islanding scheme in the Manitoba Hydro system using the method of normal forms journal January 1998