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What happens if reactive power enters the system?
Reactive power entering the system will increase the system voltage.
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.
How to increase load on a bus in power system.Does it means to increase the bus active power demand or reactive power demand or both?
You can increase load on a bus power system by increasing the bus active power demand ans reactive power demand.
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.
Why does mc terminal in watt meter is not short circuited in finding reactive power?
In a wattmeter used for measuring reactive power, the magnetic circuit (mc) terminal is not short-circuited to ensure that it can accurately measure the voltage across the load. Short-circuiting the mc terminal would eliminate the voltage component necessary for calculating reactive power, as reactive power is determined by the product of voltage and current at a phase difference of 90 degrees. This allows the wattmeter to differentiate between real and reactive power, providing a correct measurement of the reactive power in the system.
What happens if reactive power enters the system?
Reactive power entering the system will increase the system voltage.
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 there is no reactive power in DC system?
In case of dc there is no reactive components and current drawn from the supply is in phase with the voltage.due to absence of inductor and capacitor the reactive power demand in dc is zero.
How the KVAR supplied by synchronous generator?
Synchronous generators supply reactive power (measured in kilovolt-amperes reactive or KVAR) by adjusting their excitation level. When the excitation is increased, the generator can produce more reactive power, which is essential for voltage regulation in the power system. Conversely, if the excitation is decreased, the generator can absorb reactive power. This ability to control reactive power makes synchronous generators crucial for maintaining system stability and voltage levels in electrical grids.
What are the reasons for negative reactive power?
Negative reactive power indicates that a power system is supplying reactive power rather than consuming it. This typically occurs in systems with capacitive elements, such as capacitors or synchronous condensers, which provide reactive power to support voltage levels and improve power factor. Negative reactive power can also be a result of certain types of loads, such as induction motors operating under specific conditions. Overall, the presence of negative reactive power helps stabilize voltage and enhance the efficiency of power transmission.
What is the role of reactive power in an electric circuit?
Some electrical machines work on the principle of electromagnetic induction. For such events to occur, we need inductor due to which reactive power flows in the circuit. Since, this power is due to the energy storing elements in the circuit like inductor and capacitor. That is why, we need reactive power in a electric circuit.
How to increase load on a bus in power system.Does it means to increase the bus active power demand or reactive power demand or both?
You can increase load on a bus power system by increasing the bus active power demand ans reactive power demand.
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.
Why does mc terminal in watt meter is not short circuited in finding reactive power?
In a wattmeter used for measuring reactive power, the magnetic circuit (mc) terminal is not short-circuited to ensure that it can accurately measure the voltage across the load. Short-circuiting the mc terminal would eliminate the voltage component necessary for calculating reactive power, as reactive power is determined by the product of voltage and current at a phase difference of 90 degrees. This allows the wattmeter to differentiate between real and reactive power, providing a correct measurement of the reactive power in the system.
What is reactive power in three phases system?
Reactive power occurs in an AC system when it has a load with a poor power factor such as an induction motor. The power delivered is less than the voltage times the current by a factor called the power factor. The real power and the reactive power combine according to Pythgoras, in other words if they are represented by two sides of a right-angle triangle, then the hypotenuse represents the volt-amps. In the equation kW is the power in kilowatts, kVAR is the kilovolt-amps of reactive power, and kVA is the kilovolt-amps: (kW)2 + (kVAR)2 = (kVA)2
What is the unit of measure for reactive power?
Volt Amps [volts times amps] is used for reactive and apparent power. Watts (dimensionally the same as volt amps) is used to indicate real power.AnswerReactive power is measured in reactive volt amperes (var).
What is the definition of kilovar?
A kilovar (kVAR) is a unit of reactive power equal to 1000 volt-amperes reactive. Reactive power is the component of power flow in an alternating current system that does not perform work but is necessary to maintain the electric and magnetic fields.
