The main function of this protection is to protect the steam turbine from damage.
Gas turbines and water turbines mainly cause damage to the main engine, and the engine reverse power protection mainly protects the steam turbine from damage.
Generally speaking, the direction of generator power should be from the generator to the bus. However, when the generator loses its magnetism or for some other reason, the generator can become a motor, that is, it becomes a motor. Active power can be extracted from the system.
How many anti-leakage rings are there for the 300,000 hydroelectric generator turbine?
1. Main generator protection: generator-transformer group differential (large difference), generator differential (small difference), generator transverse difference.
2. Generator Backup Protection: Failc startup (stepping up to next level switch protection).
This means: When the generator protection is activated, the generator protection refuses to move or the switch refuses to move, and cannot trip and stop. Then activate the protection of adjacent generator components and trip the switches of adjacent components. For example: the generator has one line, and if the generator does not jump, it will delay the line switch from tripping.
3. The generator, invented by Faraday on September 23, 1831, is a motor that converts mechanical energy into electrical energy. Typically driven by a steam turbine, water turbine, or internal combustion engine. Electric power is one of the most important energy sources in modern society. Generators are widely used in industrial and agricultural production, national defense, science and technology.ogy and daily life. Generators are divided into two categories: DC generators and AC generators. These can be divided into two types: synchronous generators and asynchronous generators. The synchronous generator is most commonly used in modern power plants.
Two anti-leak rings, upper and lower. The anti-leakage ring of the 300,000 hydraulic generator turbine has two anti-leakage rings, upper and lower. The anti-leak ring is a replaceable sealing structure installed between the Francis turbine wheel and the upper cover and lower ring to reduce water leakage. Its function is to reduce the volume loss of the turbine and protect the upper crown and lower ring of the impeller. wear.