What is the importance of inductive reactance?

Inductive reactance causes voltage and current to go out-of-phase. In electrical power systems, this will limit the power capacity of AC transmission lines.

What is reactive power in power system?

In electrical grid systems, reactive power is the power that flows back from a destination toward the grid in an alternating current scenario. Reactive power gets energy moving back into the grid during the passive phases. Reactive power is also known as: phantom power.

What is the effect of reactance in an alternating circuit?

Reactance is the measure of the opposition to the flow of alternating current caused by the inductance and capacitance in a circuit rather than by resistance. Capacitive reactance is associated with the changing electric field between two conducting surfaces (plates) separated from each other by an insulating medium.

What is reactance and its unit?

Reactance is essentially the inertia against the motion of electrons in an electrical circuit i.e. the attribute against the flow of electrons in an electrical circuit. It is denoted by the symbol R and is measured in units of the Greek symbol ohm.

What is resistance and reactance?

Resistance and reactance are the properties of an electrical circuit that opposes the current. The main difference between reactance and resistance is that resistance measures the opposition to a flow of current, whereas reactance measures the opposition to a change in current.

What is difference between impedance and reactance?

Impedance is the combination of resistance and reactance. Reactance is a property that opposes a change in current and is found in both inductors and capacitors. Because it only affects changing current, reactance is specific to AC power and depends on the frequency of the current.

What is reactance in electrical engineering?

Reactance (also known as electrical reactance) is defined as the opposition to the flow of current from a circuit element due to its inductance and capacitance. Greater reactance leads to smaller currents for the same applied voltage. The reactance is inductive if it releases energy in the form of a magnetic field.

What is electronic reactance?

reactance, in electricity, measure of the opposition that a circuit or a part of a circuit presents to electric current insofar as the current is varying or alternating. Reactance is present in addition to resistance when conductors carry alternating current.

What is reactance in electrical circuit?

What are reactance and impedance in alternating current circuit?

Reactance: Reactance is resistance offered to the AC currents by inductors and capacitors only. Impedance: It is the sum of the resistance and reactance of inductor.

What is reactance function?

Reactance is used to compute amplitude and phase changes of sinusoidal alternating current (AC) going through a circuit element. Like resistance, reactance is measured in ohms, with positive values indicating inductive reactance and negative indicating capacitive reactance. It is denoted by the symbol.

What causes reactance?

Inductive reactance is caused by devices in which wire is wound circularly — such as coils (including line reactors), chokes, and transformers. Reactance that occurs in a capacitor is known as capacitive reactance.

What is the meaning of reactance in electrical?

For other uses, see Reactance. In electric and electronic systems, reactance is the opposition of a circuit element to the flow of current due to that element’s inductance or capacitance. Greater reactance leads to smaller currents for the same voltage applied.

What is reactive power and why is it important?

Reactive power is essential to move active power through the transmission and distribution system to the customer.Reactive power is required to maintain the voltage to deliver active power (watts) through transmission lines. Motor loads and other loads require reactive power to convert the flow of electrons into useful work.

How does reactance change the phase of an element?

First, reactance changes the phase so that the current through the element is shifted by a quarter of a cycle relative to the voltage applied across the element. Second, power is not dissipated in a purely reactive element but is stored instead.

What is the effect of transmission of reactive power on voltage?

Transmission of reactive power will load more the lines, which in turn will introduce more reactive power. The voltage on customer side will decrease further. Local control of voltage by means of auto transformers will lead to increase of current (to get the same power) and this in turn will increase voltage drops in lines.