Research Article
Assessment of Global Voltage Stability Margin through Radial Basis Function Neural Network
Table 3
GVSM for IEEE 30-bus test system at unknown different operating loading incorporating noise.
| Value of GVSM for unknown loading at normal case | | NR | FFBP | CFB | GR | LR | NARX | RBFN | ELMAN | FFDTD |
| Operating load 1.1628 | 1.9862 | 1.9593 | 2.0219 | 1.9742 | 0.7938 | 1.4445 | 1.9849 | 0.4502 | 1.7873 | Operating load 1.2118 | 1.8617 | 1.9432 | 2.0203 | 1.8625 | 0.8713 | 1.4237 | 1.8611 | 0.4794 | 1.7916 | Operating load 1.5122 | 1.4953 | 1.7104 | 1.9924 | 1.4959 | 1.5513 | 1.2909 | 1.4951 | 0.587 | 1.8094 | Operating load 1.8112 | 1.2351 | 1.3424 | 1.8337 | 1.2351 | 1.9035 | 1.1392 | 1.235 | 1.6006 | 1.8063 | Operating load 2.5122 | 0.5201 | 0.6106 | 0.2401 | 0.52 | 1.9453 | 0.6958 | 0.5203 | 1.9932 | 1.7387 |
| Value of GVSM for unknown loading at signal-to-noise ratio 0.5 db | | NR | FFBP | CFB | GR | LR | NARX | RBFN | ELMAN | FFDTD |
| Operating load 1.1628 | 1.9862 | 1.9654 | 2.0249 | 1.9539 | 0.6874 | 1.4587 | 1.981 | 0.3749 | 1.7461 | Operating load 1.2118 | 1.8617 | 1.834 | 2.0215 | 1.8579 | 0.3972 | 1.6843 | 1.8588 | 0.4354 | 1.7279 | Operating load 1.5122 | 1.4953 | 1.4669 | 1.9649 | 1.4901 | 1.7619 | 1.0475 | 1.4886 | 0.6187 | 1.7252 | Operating load 1.8112 | 1.2351 | 1.7676 | 1.9424 | 1.2286 | 1.3787 | 0.6792 | 1.2257 | 1.3806 | 1.8446 | Operating load 2.5122 | 0.5201 | 0.7542 | 0.2733 | 0.5224 | 1.9419 | 0.7901 | 0.5137 | 1.9909 | 1.8075 |
| Value of GVSM for unknown loading at signal-to-noise ratio 0.05 db | | NR | FFBP | CFB | GR | LR | NARX | RBFN | ELMAN | FFDTD |
| Operating load 1.1628 | 1.9862 | 2.0004 | 2.0038 | 1.9539 | 0.6863 | 1.7635 | 1.9788 | 0.4354 | 1.6397 | Operating load 1.2118 | 1.8617 | 2.0035 | 2.0231 | 1.8682 | 0.3445 | 1.5947 | 1.8557 | 0.5822 | 1.8311 | Operating load 1.5122 | 1.4953 | 1.8995 | 1.9757 | 1.4905 | 0.8095 | 1.0957 | 1.4789 | 1.6404 | 1.8227 | Operating load 1.8112 | 1.2351 | 0.7702 | 1.7993 | 1.2248 | 1.8876 | 0.8717 | 1.2122 | 1.0576 | 1.8252 | Operating load 2.5122 | 0.5201 | 0.8744 | 0.2835 | 0.5355 | 1.7867 | 0.4752 | 0.512 | 1.9095 | 1.6913 |
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