What is a shunt reactor?
A shunt reactor is an absorber of reactive power, thus, increasing the energy efficiency of the system. It is the most compact device commonly used for reactive power compensation in long high-voltage transmission lines and in cable systems.
Why are shunt reactors used?
Shunt reactors are used to increase the power and energy system efficiency as it absorb & compensate the reactive power in cables and long high voltage transmission lines. It can be directly connected to the power line or tertiary winding of three winding transformer.
What is difference between series and shunt reactor?
A shunt reactor is connected in parallel with a transmission line or other load. A series reactor is connected between a load and source.
Which international standard is applicable for shunt reactor?
Shunt Reactors, Capacitive Current Compensation, Voltage Control. Unless otherwise specified herein, all reactor characteristics and testing shall conform to the latest revision of IEC 60076-6, 60076- 3, 60076-4 standards.
How does a HV shunt reactor work?
The shunt reactor working principle is, in an energy system, a shunt reactor works like an absorber for reactive power, so it increases the efficiency of the energy system. It is a compact device used to compensate for reactive power in high voltage transmission lines as well as in cable systems.
Why are series reactors used?
Series reactors are used as current limiting reactors to increase the impedance of a system. They are also used to limit the starting currents of synchronous electric motors and to compensate reactive power in order to improve the transmission capacity of power lines.
What is substation Bay?
A bay is a power line within an electrical substation which connects a circuit (such as a power line or transformer) to a busbar . Each bay typically includes circuit breakers, disconnectors, instrument transformers and surge arresters.
What is HV reactor?
HV, oil immersed, shunt reactors are the most compact and cost-efficient means to compensate reactive power generation of long-distance, high-voltage power transmission lines, or extended cable systems during light load conditions.
Is shunt reactor a capacitor bank?
Due to their inductive nature of the Shunt Reactor, it is used whenever there is need for compensation of capacitive reactance. Power System loads are predominantly inductive in nature and Capacitor banks are used to compensate for the inductive loads.
What is the difference between bus reactor and line reactor?
All Answers (5) Line Reactors are current-limiting devices suppressing rapid changes in current and limiting current surges. Shunt reactors which are used for controlling the bus voltage of sub station are known as bus reactors. They maintain bus voltage counteracting the over compensating effect of capacitance.
What are different types of series reactors *?
Types of Electrical or Line Reactors
- Shunt Reactor.
- Current Limiting and Neutral Earthing Reactor.
- Damping Reactor.
- Tuning Reactor.
- Earthing Transformer.
- Arc Suppression Reactor.
- Smoothing Reactor etc.
Why SF6 is used in CB?
So due to high dielectric strength and high cooling effect, SF6 gas is approximately 100 times more effective arc quenching media than air. Due to these unique properties of this gas, SF6 circuit breaker is used in a complete range of medium voltage and high voltage electrical power system.
What is bus PT and line PT?
Line pt means to measure incoming line voltage. Thebus pt means measure. The bus needs to be protected under the bus’s voltage. Protection for motor feeders.
What is difference between shunt reactor and shunt capacitor?
Shunt capacitors are used to compensate lagging power factor loads, whereas reactors are used on circuits that generate VArs such as lightly loaded cables. The effect of these shunt devices is to supply or absorb the requisite reactive power to maintain the magnitude of the voltage.
Where is shunt capacitor used?
As mentioned above, shunt capacitors can be used in various locations, including electricity poles, substations, power transformers, EHV, and LV lines, among others. The application of shunt capacitors in utilities reduces the current flowing through the distribution feeder with the help of reactive power.