✔ Inductive Reactance Compensation

Inductive Reactance Compensation

- February 22, 2018

Whenever an inductive load is connected to the transmission line power factor lags because of lagging load current. The method in accordance with claim 1 wherein the reactance module is an inductive module and the plurality of reactance banks are inductive banks wherein the net reactance is a net capacitance such that the selected inductance banks compensate for at least a portion of the net capacitance.

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3431there are eight possible circuit topologies for compensation depending on current i or voltage v.

Inductive reactance compensation. Inductive reactance of a coil depends on the frequency of the applied voltage as reactance is directly proportional to frequency so far we have looked at the behaviour of inductors connected to dc supplies and hopefully by now we know that when a dc voltage is applied across an inductor the growth of the current through it is not instant but. Due to large inductive reactances of ipt capacitors are preferably adopted to nullify the total reactance and to resonate to a certain frequency for filtering out harmonics. To compensate it a shunt capacitor is connected which draws current leading to the source voltage.

X is the reactance of the transmission line. X l series inductive reactance of the line d phase angle. It is economical to supply this reactive power closer to the load in the distribution system.

Generally the line reactance is constant but its net effect can be controlled through voltage injection. Meanwhile the line current increases with the capacitive reactance compensation level from 0 to 33. In the context of an ac circuit although this concept applies any time current is changing this magnetic field is constantly changing as a result of current that oscillates.

This method is used improve the power factor. For capacitors we find that when a sinusoidal voltage is applied to a capacitor the voltage follows the current by one fourth of a cycle or by a phase angle. One of widely used compensation circuits is two capacitor type called basic compensation circuit as shown fig.

For instance the line current decreases as the inductive reactance compensation level increases from 0 to 100. Reactance can be either inductive or capacitive which contribute to reactive power in the circuitmost of the loads are inductive and must be supplied with lagging reactive power. Series compensation is the method of improving the system voltage by connecting a capacitor in series with the transmission line.

Inductive reactance is a property exhibited by an inductor and inductive reactance exists based on the fact that an electric current produces a magnetic field around it. The net result is improvement in power factor. If a simple series capacitor is inserted into the transmission line or between the bus 1 and bus 2 in figure 1 then we can say it is series compensation.

In other words in series compensation reactive power is inserted in series with the transmission line for improving the impedance of the system. This formula is derived assuming that resistance of transmission line is negligible. Inductive reactance has units of ohms and is greatest at high frequencies.

Reactive power compensation in power systems can be either shunt or.