NDLI: Nonlinear PID controller of H-bridge cascade SSSC top level control

Content Provider	IEEE Xplore Digital Library
Author	Zhao Yang Xiao Xiangning Xudong Jia
Copyright Year	2008
Description	Author affiliation: Key Lab. of Power Syst. Protection, North China Electr. Power Univ., Changping (Zhao Yang; Xiao Xiangning; Xudong Jia)
Abstract	As a series FACTS device based on Voltage Source Converter (VSC), Static Series Synchronous Compensators (SSSC) can optimize power flow and improve power system stability by controlling the line impedance rapidly. According to the three levels control structure of SSSC proposed in this paper, when SSSC middle level control operates at constant impedance mode, it has characteristic of controllable impedance as viewed from the top level. In this paper, the output of SSSC is equivalent to controllable impedance and then affine nonlinear equation of the single machine infinite bus (SMIB) power system including a SSSC can be obtained without the compound coordinate transformation approach which is proposed by other documentation and the feedback exact linearization method can be used directly to obtain the SSSC top level nonlinear controller. For avoiding solving the partial differential equation, the direct method is used to realize the exact linearization simply and conveniently. For overcome the shortcoming of low robustness of exact feedback linearization approach due to uncertainty of parameters and model of controlled system, the nonlinear PID control is used to design the SSSC top level controller. Finally the paper applies Real Time Digital Simulator (RTDS) to validate the feasibility of the proposed modeling and control approach in damping out power system oscillations.
Starting Page	1826
Ending Page	1830
File Size	627437
Page Count	5
File Format	PDF
ISBN	9787900714138
DOI	10.1109/DRPT.2008.4523703
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-04-06
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	DRPT
Subject Keyword	Three-term control Level control Linear feedback control systems Nonlinear control systems Impedance Control systems Power system modeling Power systems Power system simulation Static power converters Three level control structure Feedback exact linearization H-bridge Nonlinear PID control Robustness RTDS SSSC
Content Type	Text
Resource Type	Article

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