What are series and shunt compensator?
In series compensation, the FACTS is connected in series with the power system. It works as a controllable voltage source. … To compensate, a shunt capacitor is connected which draws current leading the source voltage. The net result is improvement in power factor.
What is the purpose of series compensation?
Series compensation is a well established technology that is primarily used to reduce transfer reactances, most notably in bulk transmission corridors. The result is a significant increase in power transfer capacity and improvement of voltage and angular stability in transmission systems.
Which is the series compensation devices?
1. INTRODUCTION Series Compensation is basically putting EHV capacitors in series with transmission lines. The capacitor compensate the inductive reactance of transmission line, thereby making virtual reduction in line length and enhances the stability limit and power transfer capacity.
What are the disadvantages of series compensation?
The following disadvantages limit the application of series capacitors on the electric power systems: They cannot provide reactive compensation for feeder loads and do not significantly reduce system losses. Series capacitors can only release additional system capacity if it is limited by excessive line voltage drop.
How is series compensation done?
Series compensation is the method of improving the system voltage by connecting a capacitor in series with the transmission line. In series compensation, reactive power is inserted in series with the transmission line for improving the impedance of the system. It improves the power transfer capability of the line.
What is electrical SSSC?
The static synchronous series compensator (SSSC) is a power quality FACTS device that employs a VSC connected in series to a transmission line through a transformer or multilevel inverters.
Why do we use capacitors in series?
Series capacitors are used to compensate the inductance of transmission line. Series capacitors will increase the transmission capacity and the stability of the line. Series capacitors are also used to share the load between parallel lines. Depending on the size of the bank, each phase consists of one or two segments.
What is the basic principle of series compensation?
Series capacitive compensation method is very well known and it has been widely applied on transmission grids; the basic principle is capacitive compensation of portion of the inductive reactance of the electrical transmission, which will result in increased power transfer capability of the compensated transmissible …
What is a series capacitor?
When capacitors are connected one after another, they are said to be in series. For capacitors in series, the total capacitance can be found by adding the reciprocals of the individual capacitances, and taking the reciprocal of the sum.
What are the needs for Variable Series Compensation?
From the system viewpoint, the principle of variable-series compensation is simply to increase the fundamental-frequency voltage across an fixed capacitor (FC) in a series compensated line through appropriate variation of Page 11 the firing angle, α.
Which device is a combination of series and shunt compensator?
The Unified Power Flow Controller (UPFC) provides reactive shunt compensation, active and reactive series compensation and phase shifting.
What is SVC and Statcom?
Abstract: Both SVC (Static Var Compensator) and STATCOM (Static Synchronous Compensator) are important equipment of reactive compensation, which are compared in voltage supporting, improving the transient stability and transmission limit, and damping low frequency oscillation.