| Autor: |
Ramamoorty Mylavarapu, Venkata Siva Krishna Rao Gadi, Naga Chaitanya Munukutla |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
2019 8th International Conference on Power Systems (ICPS). |
| DOI: |
10.1109/icps48983.2019.9067725 |
| Popis: |
Controlled islanding is used as a last plan of defense against cascaded tripping caused due to severe disturbances in wide area power systems. It limits the spread of disturbance by splitting the system into healthier and problematic islands. This paper presents a controlled islanding scheme that optimally splits the system into two islands considering net power flow between them as minimum. A new index called Load Generation Imbalance (LGI) index is introduced, which takes care of segregating the buses between the two groups to satisfy the optimality condition of net power flow at the boundary of the two islands. In the first phase of the proposed methodology, generator coherency is identified using RMS value of relative angular difference of equivalent machine model developed from local measurements at all generator buses. The solution of first phase initiates the controlled islanding scheme in the second phase, in case instability of the system is detected. The performance of the proposed methodology is tested on IEEE 39 bus system. The simulation results are compared with the recent methods reported in the literature. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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