What is synchronous modifier?

Synchronous phase modifier is a synchronous motor that runs without mechanical load, and is provided with means for varying its power factor to simulate a capacitive or inductive reactor; used in voltage regulation of alternating-current power systems.

What is synchronous condenser mode?

​​A synchronous condenser is a synchronous motor running at no load and in over-excited mode. A synchronous motor in over-excited mode behaves as a capacitor which is indicated by a leading current or supply of VARs in the circuit by a synchronous motor.

Why is it called a synchronous condenser?

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 benefit of synchronous condenser?

The advantages of a synchronous condenser are that we can control the power factor of system smoothly without stepping as per requirement. In case of a static capacitor bank, this fine adjustments of power factor cannot be possible rather a capacitor bank improves the power factor stepwise.

What is the function of phase modifier?

Machine whose chief purpose is to supply leading or lagging reactive volt-amperes to the system to which it is connected; may be either synchronous or asynchronous.

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.

Where are synchronous condenser used?

The synchronous condenser is used in power lines to improve power factor, power factor correction by connecting it along with transmission lines.

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 is a phase modifier definition?

[′fāz ‚mäd·ə‚fī·ər] (electricity) Machine whose chief purpose is to supply leading or lagging reactive volt-amperes to the system to which it is connected; may be either synchronous or asynchronous.

What is synchronous condenser What are the advantages of installing a synchronous condenser in an electrical system illustrate your answer with an example?

(i) By varying the field excitation, the magnitude of current drawn by the motor can be changed by any amount. This helps in achieving step less control of power factor. (ii) The motor windings have high thermal stability to short circuit currents. (iii) The faults can be removed easily.

How a synchronous motor can be used as a synchronous condenser?

Detailed Solution. A synchronous condenser is an overexcited synchronous motor, which draws leading currents from the system and hence compensates for lagging VARs. This synchronous motor running without load i.e. over excited is synchronous condenser.

Where are synchronous condensers 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.