This paper discusses and compares different control techniques for damping undesirable inter-area oscillation in power systems by means of Power System Stabilizers (PSS), Static Var Compensators (SVC) and Shunt Static Synchronous Compensators (STATCOM). The oscillation problem is analyzed from the point of view of Hopf bifurcations, an “extended” eigen analysis to study different controllers, t...

At any point of time, a power system operating condition should be stable, meeting various operational criteria and it should also be secure in the event of any credible contingency. Present day power systems are being operated closer to their stability limits due to economic and environmental constraints. Maintaining a stable and secure operation of a power system is therefore a very important...

Due to the rapid technological progress, the consumption of electric energy increases continuously. But the transmission systems are not extended to the same extent because building of new lines is difficult for environmental as well as political reasons. Hence, the systems are driven closer to their limits resulting in congestions and critical situations endangering the system security. Power ...

The advanced static VAR compensator (now widely known as the static condenser or STATCON) uses a high power self-commutating inverter to draw reactive current from a transmission line. Two fundamentally different types of invertor can be used for this purpose, one providing control of output voltage magnitude and phase angle, and the other having only phase angle control. For each of these type...

The paper presetrrs a novel AI-rule based itrtelligeirt conrroller for fired capacitor-thyristor controlled reactor (FC-TCR) static VAR Compensator (SVC). The brrelligenr rolrage regulator is based on the concept of the error escrrrsiorr plarie where the stubilizing actiow is scaled by the magnitude of the excursion voltage error I'ector, irr order to etuure adequate compensation. The proposed ...

This paper concentrates on comparing the advantages and disadvantages, including costs, of using Secondary Voltage Regulation (SVR) versus using shunt-connected controllers, in particular Mechanical Switched Capacitors (MSC), Static var Compensators (SVC) and Static Synchronous Compensators (STATCOM), to improve voltage stability (VS) and the external transfer capability (TC) of the Italian pow...

This paper presents a laboratory model for a shunt static var compensator (SVC). Such shunt static var compensator (SVC) is useful in the control of power distribution feeders. The type of the SVC considered in this investigation is the famous thyristor-controlled reactor (TCR) configuration. LABVIEW software has been used as a practical platform to control the operation of the SVC thyristors. ...