Research Article

Improving Power System Stability with Gramian Matrix-Based Optimal Setting of a Single Series FACTS Device: Feasibility Study in Vietnamese Power System

Table 4

Energy values according to several feasible locations of TCSC.

Case numberContingency cases (from Table 3) (Trace of ) × 105
TCSC is placed on the line between buses
NoneNQ-HTDN-VAPLei-TMPLei-DSDN-DSPLei-DLPLei-CBPLei-DakNDakN-CBDL-TD

The Northern region (1)
()NQ-HB0.05300.13540.11890.07800.05160.06140.06930.07800.06260.02900.0381
()VT-PT0.00200.01420.01320.00200.00670.00800.01030.01180.00890.00550.0064
()TL-PN0.00120.09470.08730.03740.03680.04830.05060.05260.04500.02150.0254
()NQ-SL0.02420.09230.08400.05200.03540.04290.04580.05020.04180.01850.0242
()PT-HB0.00340.06060.05750.01200.02400.02940.03070.03260.02820.01220.0156
()QN-HH0.00100.01080.00990.00110.00440.00430.00480.00590.00470.00290.0032
()HH-VT0.00120.00950.00970.00250.00440.00560.00610.00590.00540.00300.0031
()HH-PT0.00320.01290.01220.00400.00610.00740.00920.01010.00790.00600.0055
()PT-SL0.00100.01370.01170.00640.00590.00310.00740.01090.00710.00430.0057
()QN-TL0.00290.06130.05640.01350.02420.03070.03370.03640.03010.01560.0176
()QN-PN0.00320.09570.08870.01290.03720.04890.05140.05300.04580.02230.0253
()QN-MD0.02160.03610.03430.01600.01400.01970.01940.01880.01710.00820.0090
()TT-NQ0.00540.15230.13680.08500.06000.07660.08640.09410.07630.03820.0450
()TT-PN0.01520.11730.10720.06300.04600.05980.06460.06850.05740.02790.0330
Total energy of (1)0.13850.90670.82780.38580.35690.44610.48970.52880.43830.21510.2571

The Southern region (2)
()VA-HT0.01820.27770.28870.16600.12270.16160.17590.19000.15460.07800.0930
()DN-TM0.02870.20150.47080.49820.59480.18940.32670.30030.27330.16420.1462
()SM-TY0.00190.00370.00350.00020.00150.00220.06560.01250.01320.02960.0603
()SM-TD0.00850.04530.06460.03990.04120.04160.39610.11840.02810.13820.3472
()NP-PL0.00430.06830.08290.04920.05020.04600.13300.36480.16380.38230.0413
()TD-CB0.00390.02680.03800.03590.02480.02320.17420.10550.52850.11230.1103
()PL-MT0.00290.01580.02530.02290.01670.01880.06070.10770.04510.12170.0498
()PL-DH0.00130.00790.00620.00130.00300.00210.03810.01750.00920.02550.0262
()DH-MT0.00480.01800.02730.00950.01770.01890.04770.10830.04920.11660.0413
()MT-DHa0.00180.00770.01740.01360.01170.01330.04250.06120.02690.06590.0312
()OM-MT0.00230.01760.02560.02710.01660.01770.06720.09300.04190.10010.0498
()VT-SM0.00820.01200.02890.01240.01950.01980.09690.08260.03430.08030.0911
()PM-NB0.00110.03700.03410.03400.01840.01110.13700.11660.06200.09310.0798
()CB-PL0.00430.08150.11420.01500.07340.07740.05840.58210.23590.63190.1125
()NB-MT0.00340.00780.01140.01000.00770.00890.07740.03570.01230.03910.0502
()CB-DH0.01500.03460.04990.03800.03300.03570.03470.26960.10480.30000.0600
()SM-PM0.01120.04130.04240.01210.02450.02020.23380.03950.03030.01460.1432
Total energy of (2)0.12180.90431.33120.98531.07730.70792.16592.60531.81342.49341.5332

Total energy of (1) + (2)0.26041.81112.15901.37111.43421.15402.65563.13412.25172.70851.7903