Research Article
Implementation of Static Line Voltage Stability Indices for Improved Static Voltage Stability Margin
Table 4
System performance for line outage contingencies.
| | Test system | Variable | Objective functions | | Case 1 | Case 2 | Case 3 | Case 4 |
| | IEEE 30-bus test system | Qg (MVar) | 91.98 | 83.99 | 82.90 | 59.58 | | Loss (MW) | 9.86 | 7.26 | 6.72 | 5.21 | | Maximum loadability (MW) | 593.44 | 608.28 | 593.71 | 611.49 | | Cost ($/h) | 803.81 | 826.89 | 846.04 | 972.72 |
| | IEEE 57-bus test system | Qg (MVar) | 282.05 | 262.91 | 265.46 | 276.98 | | Loss (MW) | 21.48 | 20.80 | 18.97 | 17.63 | | Maximum loadability (MW) | 2,374.60 | 2,379.13 | 2,387.12 | 2,448.90 | | Cost ($/h) | 43,258.85 | 45,882.94 | 46,344.09 | 46,415.52 |
| | IEEE 118-bus test system | Qg (MVar) | 302.22 | 251.41 | 295.41 | 258.13 | | Loss (MW) | 84.54 | 49.65 | 71.91 | 68.57 | | Maximum loadability (MW) | 16,588.36 | 23,092.41 | 21,671.22 | 17,929.17 | | Cost ($/h) | 144,668.60 | 156,898.64 | 165,175.54 | 152,214.65 |
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