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Typical applications of a synchronous condenser include: HVDC (provides short-circuit strength and dynamic reactive power support); Wind / Solar (increases short-circuit ratio); Grid Support (improves weak AC grid performance, voltage support during faults and contingencies, limits ROCOF); and Regulation (can replace.
What is a synchronous condenser what are its applications?
Large installations of synchronous condensers are sometimes used in association with high-voltage direct current converter stations to supply reactive power to the alternating current grid. Synchronous condensers are an alternative to capacitor banks for power-factor correction in power grids.
What is the benefit of synchronous condenser?
Synchronous Condensers provide real short circuit strength to the grid. Increased short circuit improves system stability with weak interconnections, facilitates system protection and can improve the operation of modern power electronics installations.
What is the application of synchronous compensator control of?
Compensator, Synchronous a synchronous electric motor that operates without an active load; it is used to improve the power factor (cos Φ) and regulate the voltage in power lines and power distribution networks.
What is the application of synchronous motor?
Synchronous motors are normally used in applications in which a constant and precise speed is required. Typical applications of these low power motors are positioning machines. They are also used in robot actuators. Synchronous motors are also used in ball mills, watches, record players, and turntables.
Why is it called a synchronous condenser?
Under excitation causes it to operate at a lagging power factor. When the motor is operated at no load with over-excitation, it takes a current that leads the voltage by nearly 90 degrees. Thus, it behaves like a capacitor and under such operating conditions, the synchronous motor is called a synchronous capacitor.
What is the difference between synchronous motor and synchronous condenser?
The only difference between a synchronous motor and a synchronous condenser is the synchronous condenser shaft is not connected to anything—it simply spins unimpeded. The sole purpose of a synchronous condenser is to adjust conditions (power factor) on the electric power transmission grid.
What are the disadvantages of synchronous condenser?
(i) There are considerable losses in the motor. (ii) The maintenance cost is high. (iii) It produces noise.
What are the advantages and disadvantages of synchronous compensators?
Advantages of synchronous condenser: The reactive power can be adjusted continuously. They are giving better performance than the static capacitor in the high voltage system. Maintenance-free. A high degree of safety can be maintained. Higher life as compared with a capacitor bank.
How much does a synchronous condenser cost?
Normally, the mean cost for a synchronous condenser is between $10 to $40 per kVAR and the maintenance cost ranges from about $0.4 to $0.8/kVAR per year.
What do you mean by synchronous speed?
: a definite speed for an alternating-current machine that is dependent on the frequency of the supply circuit because the rotating member passes one pair of poles for each alternation of the alternating current.
What is the main function of Statcom?
The Static Synchronous Compensator (STATCOM) is used in an HVDC system to provide reactive power compensation. It makes use of the Voltage Source Converter (VSC) to synthesize a controllable sinusoidal voltage at the fundamental frequency.
Which of the following is true for synchronous condenser?
It is a synchronous motor with capacitor connected across stator terminals to improve power factor. It is an over-excited synchronous motor partially supplying mechanical load, and also improving power factor of the system to which it is connected.
What are the advantages of synchronous motor?
Advantage or Merits: One of the major advantage of using synchronous motor is the ability to control the power factor. An over excited synchronous motor can have leading power factor and can be operated in parallel to induction motors and other lagging power factor loads thereby improving the system power factor.
What is the principle of synchronous machine?
The principle of operation of a synchronous motor can be understood by considering the stator windings to be connected to a three-phase alternating-current supply. The effect of the stator current is to establish a magnetic field rotating at 120 f/p revolutions per minute for a frequency of f hertz and for p poles.
What are the applications of 3 phase synchronous motor?
Due to constant speed characteristics, it is used in machine tools, motor generator sets, synchronous clocks, stroboscopic devices, timing devices, belt driven reciprocating compressors, fans and blowers, centrifugal pumps, vacuum pumps, pulp grinders, textile mills, paper mills line shafts, rolling mills, cement mills.
Where are synchronous condenser installed?
Installed at strategic intervals along a transmission system, synchronous condenser systems are either new electrical rotating equipment or existing turbogenerators reconfigured to perform as reliable grid stabilizers.
What is synchronous condenser and hunting?
The word hunting is used because after the sudden application of load the rotor has to search or ‘hunt’ for its new equilibrium position. That phenomenon is referred to as hunting in a synchronous motor. In steady state, rotor runs at synchronous speed thereby maintaining a constant value of torque angle (δ).
Why synchronous motors are not self starting?
Above a certain size, synchronous motors are not self-starting motors. This property is due to the inertia of the rotor; it cannot instantly follow the rotation of the magnetic field of the stator. Once the rotor nears the synchronous speed, the field winding is excited, and the motor pulls into synchronization.
How does a synchronous condenser work?
The synchronous condenser aids voltage regulation by drawing leading current when the line voltage sags, which increases generator excitation thereby restoring line voltage. A capacitor bank does not have this ability.
Why do we use power factor?
A lower power factor causes a higher current flow for a given load. As the line current increases, the voltage drop in the conductor increases, resulting in a lower voltage at the equipment. With an improved power factor, the voltage drop in the conductor is reduced, improving the voltage at the equipment.
How does synchronous condenser operate explain with phasor diagram?
Synchronous Capacitor or Condenser V Curve As the active power provided to motor is 0, at unity P.F that means armature current is zero. As the IF is augmented over this point, the line current upsurges in a linear manner until get saturation. The given figure shows the result of increment in IF on phasor diagram.
