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A reactor in series with a motor will reduce starting current
it can be shorted out after the motor gets near synchronous speed
some motors have a rotor with two squirrel cages the outer on has longer higher resistance bars the inner heavier lower resistance bars which will do the same thing but with a bit more feedback with respect to actual motor speed for the softer starts and without external sensors or timers
or if i didnt understand the question
you may be charged more $$ for reactive load if you plants has lots of running unloaded motors and transformer ballasts for florescent lamps you facility will be paying for imaginary power you put capacitors in parallel with the incoming power to get the near unity power factor the power company likes
What else can I help you with?
What is reactive volt amps?
volt ampere reactive is the unit of reactive power.It is the power which does no useful work but is required to assist in performing work,such as setting up magnetic fields in motors and transformers.It is also called as imaginary power.It occurs in purely reactive circuit i.e. purely inductive or capacitive.The inductance absorbs the reactive power and capacitance injects the reactive power.In inductance,reactive power is utilised to develop the flux while in the capacitance,the reactive power's function is to store the charge.
Is mvar can used to measure mva?
No, mvar (megavolt-ampere reactive) is a unit of apparent power while MVA (megavolt-ampere) is a unit of real power. Mvar is used to measure reactive power, while MVA is used to measure total power (both real and reactive).
What is kilo volt amps reactive?
Kilo Volt Amps Reactive (kVAR) is a unit of measurement used to quantify reactive power in an electrical system. Reactive power is the power that oscillates between the source and load, primarily in inductive or capacitive components, and does not perform any useful work. It is essential for maintaining voltage levels in power systems and is critical for the efficient operation of electrical equipment. kVAR is often used in power factor correction and in the analysis of AC power systems.
What is watt less power?
"Wattless power" refers to the reactive power in an electrical circuit that does not perform useful work, such as magnetizing a motor or generating a magnetic field. It is measured in units of volt-amperes reactive (VAR) and is necessary for maintaining voltage levels in the grid but does not contribute to real power consumption.
What power of the courts is reactive?
The power of judicial review is reactive, as it allows courts to review and invalidate laws or actions that are deemed unconstitutional only after they have been enacted or taken place. This power enables courts to respond to specific cases brought before them rather than proactively shaping future laws or policies.
Which line requires compensation?
Basically an AC transmission line require compensation in terms of reactive power. To push the active power across a transmission line certain amount of reactive power is necessary. In AC transmission line reactive power is generated and consumed. Generator is responsible for the production of reactive and active power both. Than this reactive power is consumed by the load and transmission line. Additional reactive power s supplied by the capacitor. This extra power supplied by the capacitor is termed as reactive power compensation. Requirement of this reactive power is there because reactive power is necessary to maintain the voltage stability.
What is load compensation?
compensation of load by connecting a compensating device which adjust the real and reactive power in the distribution side or load side.
Do power saver really works?
No, it is not.These devices don't decrease your bill.It is basically about making compensation of reactive power with capacitors.So in your houses it isn't necessary to do that.Because your electric power meter does not count reactive power.
What has the author Foroozan Ghassemi written?
Foroozan Ghassemi has written: 'Fast-acting reactive power compensation'
What is a shunt compensation?
Shunt compensation refers to the use of shunt capacitors or inductors in electrical power systems to improve voltage stability and reactive power management. By connecting these devices parallel to the transmission line, shunt compensation can help regulate voltage levels, enhance system reliability, and reduce losses. This technique is often employed in long transmission lines to counteract the effects of reactive power flow and maintain optimal operating conditions. Overall, shunt compensation plays a crucial role in improving the performance and efficiency of electrical networks.
Descibe about shunt reactors?
Shunt reactors are the inductors connected across the power line for power factor correction.The reactors injects reactive power in the transmission line for voltage compensation. The only disvantage of this shunt reactors is that it shorts whenever high voltage or transients occurs.Only stepped variation of the reactive power is possible.
Why compensation need in a power system?
Compensation in a power system is essential to maintain voltage stability, enhance power quality, and improve system reliability. It helps to correct power factor issues, reduce losses, and optimize the flow of reactive power, which is crucial for efficient operation. By implementing compensation techniques, such as capacitor banks or synchronous condensers, utilities can ensure a more stable and efficient power delivery, ultimately benefiting both providers and consumers.
Why reactive power is named as reactive?
Actually reactive power is a power which flows in between load to source which is a reactive action of the power given from source to load.the given power to load will not be utilised fully.some power will be oscillating from load to source.this is called reactive power.
What is shunt reactors?
A shunt reactor absorbs reactive power and increases the energy efficiency of any system. It is a small device used for power compensation in high voltage transmission lines and cable systems.
What happens to reactive power in a circuit that has both inductance and capacitance?
Inductors are considered to be a load for reactive power, meaning that they will draw reactive power from the system. Capacitors are considered to be sourced of reactive power, they feed reactive power into the system. If you have a circuit that is at unity (balanced with inductors and capacitors) no reactive power will be drawn from the source. You will have unity power factor. If your circuit is more inductive than capacitive it will be drawing reactive power from the source. The opposite is also true for capacitors.
Why wattmeter measure the reactive power?
A watt meter will measure active power, not reactive power.
What is mean by compensated and uncompensated power transmission line?
Power transmissions lines are inductive by nature. Power in AC systems is transmitted by varying the phase angle between source and receiving end following the below equation: Vsource * Vrecieve * sin (phi) / (Zsource + Zrecieve + Zline) V = the voltage phi = angle between source and receiving end voltage Z = impedance, Zsource = the impedance behind the source end Series compensating lines is accomplished by adding capacitors in series on a line, which reduces the Zline term in the above equation. This allows more power to be transmitted from one end to the other.
