both are same using for rotating the turbine initially
Ratchet mechanisms used in Gas power plant for Gas Turbine. (like Barring gear in steam turbine).
A droop in a steam turbine refers to a decrease in the output frequency of the turbine generator system as the load increases. This phenomenon occurs due to the inherent characteristics of the steam turbine's governor control system, which allows for a slight reduction in speed to maintain stability and respond to changes in demand. The droop setting is crucial for ensuring proper load sharing among multiple generators in a grid. It helps prevent overloading and potential damage to the turbine while maintaining overall system reliability.
Critical speed means where natural frequency is equal to system frequency.
You don't start a large turbine cold. Typically, the lubrication system is started, the turning gear is engaged and warming steam (a small amount of steam, not enough to turn the turbine) is admitted to the turbine to warm and initially expand the shaft and casing. If this isn't done, thermal shock from the admission of high pressure superheated steam into the cold turbine could damage it.
both are same using for rotating the turbine initially
Ratchet mechanisms used in Gas power plant for Gas Turbine. (like Barring gear in steam turbine).
When a large turbine rotor stops it will still be hot and will tend to bend in the middle if left to cool normally. To prevent this the barring gear will turn the rotor slightly at given intervals during the cool down period.
The isentropic turbine efficiency is important in determining how well a turbine system converts energy from the fluid passing through it into mechanical work. A higher isentropic efficiency means the turbine is more effective at converting energy, resulting in better overall performance of the turbine system.
The device which control the speed of Turbine is Governor. The Governing system sense the speed of shaft & regulate the Fuel/ Motive fluid flow to the Turbine to maintain the set shaft speed.
There are several causes that can cause a generator turbine system to lose power. The most common cause is a lack of fuel.
There are several causes that can cause a generator turbine system to lose power. The most common cause is a lack of fuel.
DEH Means "Digital Electro-hydraulic Control System" mostly for steam turbine
It results in reduced ventilation and affect the turbine more than the generator.
Main difference is that in a gas turbine, combustion is continuous. In a piston engine, combustion is pulsed.
A yaw drive system is responsible for turning the nacelle of a wind turbine to face the wind. This system includes motors and gears that are controlled by a computer to constantly adjust the turbine's orientation for optimal wind energy capture.
Soni Barring is 5' 5".