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| Content Provider | IET Digital Library |
|---|---|
| Author | Yohanandhan, Rajaa Vikhram Srinivasan, Latha |
| Abstract | This study presents the design of wide-area fractional order damping controller for low frequency inter-area oscillations in Western Electricity Coordinating Council (WECC) system. The developed wide-area damping control scheme is implemented in a decentralised manner by examining the entire system through decentralised identification at the level of each generator bus and FACTS devices in large-scale system. The decentralised identification is done by applying n4sid (Subspace State Space System Identification) algorithm to the time-domain simulated response of WECC system. The main features of the proposed approach are: (a) measurement-based control which does not require complete model of WECC; (b) minimise the communicating signals required for damping controller and incorporate practical method of time-delay compensator (TDC) design to reduce the effect of time-varying delay. The performance of wide-area control (WAC) scheme is tested on the practical WECC system and verified by non-linear time-domain simulation. The proposed decentralised WAC scheme is compared with local and centralised control scheme, which enhances the damping of inter-area oscillation effectively compared to local control scheme and more reliable compared to centralised control scheme and its robustness is verified over a wide-range of operating conditions. |
| Starting Page | 1164 |
| Ending Page | 1178 |
| Page Count | 15 |
| ISSN | 17518687 |
| Volume Number | 10 |
| e-ISSN | 17518695 |
| Issue Number | Issue 5, Apr (2016) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-gtd/10/5 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2015.0747 |
| Journal | IET Generation, Transmission & Distribution |
| Publisher Date | 2016-04-07 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | A.c. Transmission Control of Electric Power System Damping Decentralised Identification Decentralised Wide-area Fractional Order Damping Controller FACTS Device Flexible AC Transmission System Generator Bus Large-scale Power System Low Frequency Inter-area Oscillations Mathematical Analysis Measurement-based Control Nonlinear Time-domain Simulation Oscillation Power System Control Power Transmission Control SubSpace State Space System Identification TDC Time Domain Analysis Time-delay Compensator Time-domain Simulated Response Time-varying Delay WECC System Western Electricity Coordinating Council 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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