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Viet Thanh et al. / IJOCTA, Vol.15, No.4, pp.625-648 (2025)
Figure 19. The battery energy storage system (BESS) response at the 500kV EaNam bus for Scenario 3. (a)
Active power of the BESS. (b) State-of-charge (SOC) charging status
Figure 20. The battery energy storage system (BESS) response at the 500kV EaNam bus for Scenario 4. (a)
Active power of the BESS. (b) State-of-charge (SOC) charging status
power of the BESS, and Figure 20b represents power balance between supply and demand, the
the state of the SOC charging status. The BESS BESS will reduce its active power output accord-
will increase its active power output in propor- ingly.
tion to the frequency deviation. When the Dong
Nai generator reconnects, restoring the system’s Therefore, based on the two testing scenar-
ios for the Vietnamese Tay Nguyen 500/220 kV
644
