Table of Contents
What is meant by synchronous phase 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 a modifier in electrical?
For constant voltage transmission , especially designed synchronous motor , called the synchronous phase modifiers, are installed at receiving end , which maintain the voltage drop across the line constant with the change in load,power factor of the system is changed by the synchronous motors and thus voltage drop …
How synchronous phase modifier works?
Synchronous phase modifier is basically a synchronous motor operating under no load and by adjusting the excitation it is used for controlling reactive power, so that power factor and voltage are controlled.
How does synchronous phase modifier differ from synchronous motor?
When a synchronous motor which is runned at full speed on no-load (idle running) used for voltage regulating purpose is called synchronous modifiers. When synchronous motors are used for power factor correction, they are called synchronous condensers.
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 series capacitor compensation?
Series compensation is the method of improving the system voltage by connecting a capacitor in series with the transmission line. In series compensation, reactive power is inserted in series with the transmission line for improving the impedance of the system. It improves the power transfer capability of the line.
What is a shunt capacitor?
Shunt capacitors are an integral part of a power system because it helps in power factor correction. This gadget is known as a shunt capacitor. The shunt capacitor helps balance power transmission issues such as low voltage regulation, poor reliability, and power factors.
What is torque angle of synchronous motor?
Torque angle δ is the angle between Rotor flux and Stator fluxes, both are rotating at synchronous speed. When the synchronous machine is connected to an infinite bus, its speed and terminal voltage are fixed and unalterable. The control variables are only field current and the mechanical torque or load on the shaft.
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 phrase modifiers?
Noun phrase modifiers are defined as words, phrases, and clauses that describe a noun, pronoun, or noun phrase. Although adjectives and adjective phrases most frequently function to describe nouns, five grammatical forms can perform the grammatical function of noun phrase modifier in the English language.