#1
16th December 2014, 07:58 AM
| |||
| |||
Difference and relationship between Active Power and Reactive Power
Plz provide some related information about difference and relationship between Active Power and Reactive Power
|
#2
16th December 2014, 11:44 AM
| |||
| |||
Re: Difference and relationship between Active Power and Reactive Power
Active power is the power that is lost in the form of heat in the system we can say active is the power used in the system to compensate for loss, or alternative words used for Real Power (Actual Power, True Power, Watt-full Power, Useful Power, Real Power, and Active Power) while reactive power is a real concept and while it's hard to define it, In other word consider an ideal alternating current (ac) circuit consisting of a source and a generalized load, where both the current and voltage are sinusoidal. If the load is purely resistive, the two quantities reverse their polarity at the same time, the direction of energy flow does not reverse, and only real power flows. If the load is purely reactive, then the voltage and current are 90 degrees out of phase and there is no net power flow. This energy flowing backwards and forwards is known as reactive power. Here I am sharing a formula which define about it real power (p) [unit: W] reactive power (q) [unit: Var] complex power (s) apparent power (|s|) [unit: Va]: I.e. The absolute value of complex power s. Q=v*i*sin@ but sin@=x/z so q=v*i*x/z agian v/z=i so q=i(sqr)x since there is no any power loss when current flows through the pure inductor or capacitor, but the energy is stored in the form of magnetic field(in inductor) or static field (in capacitor). So the reactive power is the power used for magnetizing or is stored in capacitor in the form of static field. Simillarly p=v*i*cos@ but cos@=r/z so p=v*i*r/z also v/z=i so p=i(sqr)r for clear concept about difference and relationship between Active Power and Reactive Power, Difference and relationship between Active Power and Reactive Power you can see following attached file...................... |
|