Background: Existing power systems normally operate at heavily loaded conditions and
often face a surge in load demand. In spite of the implementation of the state of the art preventive
measures, blackout prompted interruption in the energy supply is an enduring issue. Typically, the
voltage collapse is evaded by severing a critically loaded line, which has severe repercussions including
oscillatory transients and stability hindrances, which can eventually lead to a voltage collapse.
Methods: This work presents a viable solution for the on-line alleviation of voltage stability constrained
transmission corridors to avoid the blackout without interrupting or severing any load line. The
proposed method is implemented by the insertion of a resistive impedance in the most affected and
critical line to damp out power oscillations and to avoid repetitive operation and cascaded effects
leading to the system collapse.
Result: This work aims to develop a methodical transmission network analysis and to establish the
effectiveness of the proposed augment scheme followed by a demonstration of the proposed
methodology through the simulation results of the IEEE 24 bus test power system model.
Conclusion: Further, experimental verification is performed on hardware in the loop test bench with a
220 KV artificial transmission line to demonstrate the capability in practical systems, to address the
challenge of voltage collapse and blackouts in smart power systems.