The maximum loading of the transmission lines depends upon various limits. These are related to the environmental conditions, length of the line and various stability related issues. The VAR plays important role in maximising the power transfer through a transmission line. The FACTS Controllers have a major part to play in the VAR Management, in order to increase the maximum loading capability....

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...

The system stability is greatly hampered when green electricity is feed into the conventional electricity network due to intermittent nature of renewable sources. The electricity generation from wind so far predominates than that of other renewable sources. In order to maintain system stability of the electricity network, IEC-61400 (International Electro-technical Commission) standard has defin...

One of the prominent problems in wind farms is voltage flicker emission. To prevent emission or mitigate impact as best possible, a static VAr compensator (SVC) great candidate both economically and technically. However, SVCs cannot completely compensate fast-changing reactive power due to delays caused by calculation unit triggering fire angle SVC. This paper proposes predictive control system...

Examination of the behavior of SVCs and STATCOMs in electric power systems is presented. The paper is based on analytical and simulation analysis, and conclusions can be used as power industry guidelines. We explain the principle structures of SVCs and STATCOMs, the models for dynamic studies, and the impact of these devices on steady state voltage and transient voltage stability. Sensitivity a...

One of the major challenges in grid-connected wind farms is flicker emission caused by reactive power extremely short time variations. A general used solution installing a static volt-ampere (VAR) compensator (SVC) as most cost-saving device, which still holds risk incomplete compensation subject to operating delay time. To this end, an accurate extreme short-term forecasting structure essentia...

The study of STATCOM is a connected field with the problem of reactive power compensation and better mitigation of transmission related problems in today’s world. In this review work we studied the shunt operation of the STATCOM, and how it helps in the better utilization of a network operating under normal conditions. Various devices are used for both series and shunt compensation. The learnin...

Shunt Flexible AC Transmission System (FACTS) device such as SVC and STATCOM, when placed at the midpoint of a long transmission line, play an important role in controlling the reactive power flow to the power network and hence both the system voltage fluctuations and transient stability. The validity of the mid-point location of these FACTS devices is investigated, when the actual model of the...