ABSTRACT Power system voltage instability often results in voltage collapse and/or system blackout which is a source of concern for power network operators and consumers. This work proposes a new line stability index that is suitable for investigating the voltage stability condition of Power System Networks (PSNs). This index, which is called the New Line Stability Index-1 (NLSI_1), is derived from first principles and shown to incorporate the Line Stability Index (Lmn) and the Fast Voltage ...
ABSTRACT Power system stabilizers and other controllers are employed to damp oscillations in power systems, thereby guaranteeing satisfactory dynamic performance following major network disturbances. However, the parameters of these controllers are often tuned based on the power system linearized model which generally is a function of the system operating point or state. These controllers suffer from poor performance when the system state changes. The aim of the research work reported in thi...