Authors:
Ramij Raja Hossain
and
Ratnesh Kumar
Affiliation:
Department of Electrical and Computer Engineering, Iowa State University, Ames, Iowa 50011 and U.S.A.
Keyword(s):
Power System, PSAT, Static VAR Compensator, Trajectory Sensitivity wrt Control, Under Load Tap Changer.
Related
Ontology
Subjects/Areas/Topics:
Engineering Applications
;
Informatics in Control, Automation and Robotics
;
Intelligent Control Systems and Optimization
;
Modeling, Analysis and Control of Hybrid Dynamical Systems
;
Nonlinear Signals and Systems
;
Real-Time Systems Control
;
Robotics and Automation
;
Signal Processing, Sensors, Systems Modeling and Control
Abstract:
Trajectory sensitivity based analysis is widely regarded as an important tool for real time protection scheme of power systems. Model Predictive Control (MPC) for voltage instability is one such protection scheme which computes a sequence of control actions depending upon the trajectory behaviour of the dynamics of the power systems. Thus, computation of trajectory sensitivities with respect to control input can be an integral part for designing a real-time protection scheme. In this context, it is important to note that for the state-of-the-art Power System Analysis Tool (PSAT)(Milano, 2005), (Milano et al., 2008), while it is relatively easy to compute the trajectory sensitivities with respect to any system variables, the computation of trajectory sensitivities with respect to control inputs is not explicitly supported. This paper presents a method to extend the functionality of PSAT to also compute the trajectory sensitivities with respect to control inputs, which ultimately forms
the basis for real-time protection schemes such as MPC. The proposed method is validated using direct time-domain simulation results.
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