Compensation effect of series capacitor

What is series capacitor compensation?

Series capacitor compensation has been applied for transmission systems to increase the system capacity and enhance its voltage profile. In distribution systems, the main advantage of the series compensation is its voltage boost to the buses downstream from where the capacitor is positioned.

What is the effect of series capacitor in a circuit?

Due to the effect of series capacitor the receiving end voltage will be instead of VR as seen from the phasor diagram (Figure 2). Thus with series capacitor in the circuit the voltage drop in the line is reduced and receiving end voltage on full load is improved. Series capacitors improve voltage profile.

What is the effect of series capacitor in a transmission line?

Figure 1 A transmission line with series-capacitor-compensation applied. Due to the effect of series capacitor the receiving end voltage will be instead of VR as seen from the phasor diagram (Figure 2). Thus with series capacitor in the circuit the voltage drop in the line is reduced and receiving end voltage on full load is improved.

Do series capacitors affect the overall protection used on series compensated lines?

A discussion of their effect on the overall protection used on series compensated lines. First, however, a brief review will be presented on the application and protection of series capacitors. Series capacitors are applied to negate a percentage of and hence reduce the overall inductive reac-tance of a transmission line.

What are the benefits of a series capacitor compensator?

Voltage drop in the line reduces (gets compensated) i.e. minimization of end-voltage variations. Prevents voltage collapse. Steady-state power transfer increases; it is inversely proportional to X′ l.. As a result of (2) transient stability limit increases. The benefits of the series capacitor compensator are associated with a problem.

What is a series capacitor?

Typically, series capacitors are applied to compensate for 25 to 75 per-cent of the inductive reactance of the transmission line. The series capacitors are exposed to a wide range of currents as depicted in Figure 1, which can result in large voltages across the capacitors.