physical significance of susceptance

[rooney3214]

Hi all,

I'm struck with a simple question.

I want to know what is the physical significance of measured susceptance (suppose measuring a black box, we donot know what is inside). What physical parameter susceptance measures actually.

I will be grateful if anyone kindly put some light on my confusion.

Rooney

 

[jcy]

I think the susceptance is related to the amount of energy the box can store. If conductance (or resistance) is a measure of how much power is dissipated in the box, susceptance (or reactance) is a measure of how much reactive energy (e.g., capacitor or inductor) the box can store. For a given source voltage, a box with a larger susceptance would store more reactive energy than one with a smaller susceptance.

Of course, it is also used to relate the complex currents and voltages through

I = YV where Y = G + jB (B is the susceptance).

John