Research Article
Modeling Electromechanical Overcurrent Relays Using Singular Value Decomposition
Table 5
The curve-fitting errors of 17 actual operating times for each TDS of the CO-8 relay in milliseconds.
| TDS | 0.5 | 3 | 6 | 9 |
| | Top | SVD | Err | Top | SVD | Err | Top | SVD | Err | Top | SVD | Err |
| 1.5 | 1682.2 | 1682.1 | 0.11 | 15254.0 | 15254.0 | 0.10 | 31907.0 | 31907.0 | 0.26 | 50681.0 | 50681.0 | 0.16 | 2 | 760.5 | 764.2 | 3.69 | 6182.1 | 6182.6 | 0.49 | 13232.0 | 13232.0 | 0.21 | 21256.0 | 21257.0 | 1.11 | 3 | 343.9 | 343.6 | 0.25 | 2577.6 | 2581.6 | 3.98 | 5334.0 | 5337.1 | 3.10 | 8449.4 | 8450.2 | 0.78 | 4 | 213.7 | 214.3 | 0.60 | 1578.5 | 1578.0 | 0.44 | 3341.9 | 3339.4 | 2.51 | 5222.6 | 5218.7 | 3.92 | 6 | 128.1 | 127.6 | 0.55 | 1004.0 | 1002.7 | 1.24 | 2062.6 | 2060.3 | 2.32 | 3221.3 | 3218.3 | 3.02 | 8 | 99.7 | 99.7 | 0.01 | 821.3 | 820.2 | 1.12 | 1618.9 | 1618.4 | 0.44 | 2542.7 | 2540.0 | 2.66 | 10 | 86.1 | 86.3 | 0.19 | 711.7 | 712.9 | 1.13 | 1407.3 | 1409.4 | 2.16 | 2210.1 | 2211.9 | 1.79 | 13 | 75.8 | 75.7 | 0.04 | 618.3 | 617.9 | 0.42 | 1244.0 | 1243.5 | 0.56 | 1944.8 | 1944.7 | 0.10 | 16 | 70.1 | 70.0 | 0.10 | 563.1 | 563.1 | 0.01 | 1145.0 | 1145.3 | 0.30 | 1783.3 | 1783.9 | 0.62 | 19 | 66.5 | 66.6 | 0.13 | 526.5 | 527.1 | 0.56 | 1078.3 | 1078.6 | 0.28 | 1672.8 | 1672.7 | 0.06 | 22 | 64.7 | 64.6 | 0.07 | 501.4 | 501.2 | 0.12 | 1030.0 | 1029.9 | 0.06 | 1589.8 | 1589.9 | 0.13 | 26 | 62.9 | 62.9 | 0.01 | 476.0 | 476.2 | 0.23 | 982.0 | 982.0 | 0.02 | 1506.4 | 1506.5 | 0.02 | 30 | 61.4 | 61.4 | 0.00 | 458.5 | 458.1 | 0.47 | 946.5 | 946.1 | 0.36 | 1442.9 | 1442.6 | 0.33 | 34 | 60.1 | 60.4 | 0.35 | 443.7 | 444.2 | 0.45 | 917.4 | 917.8 | 0.38 | 1390.5 | 1391.4 | 0.93 | 39 | 59.6 | 59.6 | 0.02 | 430.7 | 430.6 | 0.19 | 889.1 | 889.1 | 0.02 | 1339.7 | 1339.5 | 0.14 | 44 | 59.0 | 58.9 | 0.09 | 419.3 | 419.5 | 0.20 | 865.5 | 865.5 | 0.03 | 1297.0 | 1296.7 | 0.27 | 49 | 58.6 | 58.7 | 0.12 | 409.8 | 409.9 | 0.11 | 845.0 | 845.1 | 0.14 | 1260.1 | 1259.9 | 0.15 |
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Please refer to Table 2 for the meanings of the terms.
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