What do you understand by motoring of alternator?

When a synchronous generator or alternator operating under the load and when suddenly input power to the shaft of the generator lost which the machine is connected to the power system, then the machine acts as motor.

Why is motoring a generator bad?

Motoring. Motoring is what happens when the prime mover is not supplying enough power to the generator. Real power flows into the generator instead of out of it, and reactive power flows both into and out of the generator. Motoring can destroy your prime movers, like this wind turbine.

How a steam turbine operates?

In simple terms, a steam turbine works by using a heat source (gas, coal, nuclear, solar) to heat water to extremely high temperatures until it is converted into steam. The turbines are connected to a generator with an axle, which in turn produces energy via a magnetic field that produces an electric current.

What is steam turbine driven?

A steam turbine is a steam-driven driver. Water is heated at an extremely high temperature to convert it into steam. The energy created by highly pressurized steam is converted to mechanical energy which rotates the blades in the steam turbine.

How does a car generator work?

When the car is running, the alternator generates energy to feed the electrical system and charge the battery. The output of an alternator is direct current (DC). When the alternator pulley is rotated, alternating current (AC) passes through a magnetic field and an electrical current is generated.

What is the motoring action?

Motoring of a generator occurs when the energy supply to the prime mover is cut off while the generator is still on line. When this occurs, the generator will act as a synchronous motor and drive the prime mover.

What is motoring a generator?

What Causes Generator Motoring? Generator motoring is a condition that happens when the prime mover can not supply enough power to the AC generator to account for the load demand on the generator. When this happens, the generator begins to act like a motor, by absorbing real power from the electrical system.

What is a turbine car?

The Chrysler Turbine Car is an experimental two-door hardtop coupe powered by a turbine engine and manufactured by Chrysler from 1963–1964. The car was styled by Elwood Engel and the Chrysler studios and featured power brakes, power steering, and a TorqueFlite transmission.

What is extraction turbine?

Definition of extraction turbine : a steam turbine provided with taps through which steam may be drawn off at various stages for purposes (such as heating) other than driving the turbine.

What is RPM of steam turbine generator?

Modern industrial steam turbines run at high speed, e.g. 10 000–12 000 rpm, and are connected to their generators through reduction gearboxes to give the required generator speed of 1500 or 3000 rpm.

What is STG electrical?

Here, STG(Steam Turbine Generator) and GTG(Gas Turbine Generator) based power plant are taken into account.

How does a steam turbine drive work?

Steam turbine drives are equipped with throttling valves or nozzle governors to modulate steam flow and achieve variable speed operation. The steam turbine drive is thus capable of serving the same function as an induction motor coupled to an inverter or adjustable speed drive.

What is motoring protection for steam turbines?

Motoring protection is primarily used in steam turbines to safeguard the generator against reverse power conditions. For steam turbines, motoring has quite significant effects on its blades.

What is meant by the term ‘motoring’ of a turbine generator?

“Motoring” is when the turbine generator is connected to the grid but is not putting power into the grid. In effect the generator is acting as a motor.

When was the steam turbine invented?

In 1884, the first steam turbine was discovered by Sir Charles A. Parsons. In this turbine, the mechanical work generates with the help of the turbine shaft. This shaft is coupled with the steam steam generator which converts the shaft mechanical power into electrical power.