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Proposed algorithm results for different test systems.
| Test system | Number of coherent zones | PMU bus location |
|---|---|---|
| WSCC 9-bus | 3 | 1, 2, 3, 4, 7, 9 |
| IEEE 14-bus | 4 | 1, 2, 4, 6, 8, 9, 11, 13 |
| New England IEEE 39-bus |
9 | 3, 7, 12, 16, 19, 23, 26, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39 |
| IEEE 68-bus | 18 | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 24, 26, 29, 37, 41, 42, 44, 45, 48, 49, 50, 53, 54, 55, 56, 58, 60, 61, 62, 64, 66, 67 |
