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| Content Provider | IET Digital Library |
|---|---|
| Author | Shotorbani, Amin Mohammadpour Ajami, Ali Zadeh, Saeed Gassem Aghababa, Mohammad Pourmahmood Mahboubi, Behzad |
| Abstract | Unified power flow controller (UPFC) is one of the multipurpose flexible AC transmission system devices which controls the transmission line parameters independently and simultaneously. This study presents a novel power flow controlling method based on terminal sliding mode control (TSMC) method using UPFC. The proposed controller has the advantages of finite-time convergence and chattering-free properties. A chattering-free state variable controller is designed and employed to address the problems of reference tracking, robustness against uncertainties and disturbances performance of the proposed controller is compared with an existing sliding mode controller (SMC) and a PI controller. Chattering phenomena and discontinuity of the sliding mode controller are also eliminated. Another objective of the proposed control scheme is to use only locally-measurable states, and to avoid remote long distance measurements. An adaptive observer is used to estimate the receiving end bus voltage, to avoid the data transfer problems over long distances, and to fulfil advantages such as fault detection and isolation. The presented observer could also be used to estimate the measurable states of the system. Simulation results demonstrate the efficiency of the proposed controllers. It is shown that the convergence time of the proposed TSMC is lower than those of the SMC and PID controllers’. Stability of the proposed controllers is mathematically proved. The performance of the presented adaptive observer, in the noisy environment, is also evaluated by simulation. Finally, simulation results of the suggested controllers under transient states and faulty conditions are presented. |
| Starting Page | 1712 |
| Ending Page | 1723 |
| Page Count | 12 |
| ISSN | 17518687 |
| Volume Number | 8 |
| e-ISSN | 17518695 |
| Issue Number | Issue 10, Oct (2014) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-gtd/8/10 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2013.0637 |
| Journal | IET Generation, Transmission & Distribution |
| Publisher Date | 2014-05-15 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | A.c. Transmission Adaptive Observer Chattering-free State Variable Controller Control of Electric Power System Fault Detection Finite-time Convergence Flexible AC Transmission System Flexible AC Transmission System Device Load Flow Control Local Measurement Multivariable Control System PI Controller Power Flow Controlling Method Power System Control Power Transmission Cables Power Transmission Control Power Transmission Line Remote Long Distance Measurement Robust Terminal Sliding Mode Power Flow Controller Sliding Mode Controller Terminal Sliding Mode Control Method Transmission Line Parameter Unified Power Flow Controller UPFC Variable Structure 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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