Lyapunov Stability Based Wide Area Control Systems for Excitation Boosters in Synchronous Generators
| Autor: | Javier Renedo, F. Fernandez-Bernal, Luis Diez-Maroto, Luis Rouco |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Lyapunov stability
Computer science 020209 energy Energy Engineering and Power Technology 02 engineering and technology Current source Fault (power engineering) Generator (circuit theory) Rectifier Control theory Control system 0202 electrical engineering electronic engineering information engineering Transient (oscillation) Electrical and Electronic Engineering Voltage |
| Zdroj: | IEEE Transactions on Power Systems. 34:194-204 |
| ISSN: | 1558-0679 0885-8950 |
| DOI: | 10.1109/tpwrs.2018.2865970 |
| Popis: | Excitation boosters (EBs) are aimed to improve fault ride through capability of synchronous generators equipped with bus fed static excitation systems by means of adding a supplementary voltage or current source to the rectifier. However, this paper shows that EBs governed by local on–off controls may result in adverse effects in case of remote faults from generators that may occur in multi-machine systems. To sort this problem out, a novel EB Wide Area Control System (WACS) that modulates the EB voltage using the generator speed deviation with respect to the speed of the center of inertia (COI) is proposed. The speed of the COI is obtained using a Wide Area Measurement System (WAMS), whereas the control laws are deduced from the Lyapunov stability theory. Results show that transient stability of multi-machine systems can be enhanced using EB WACS. |
| Databáze: | OpenAIRE |
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