Transformer Description:
Excitation transformer is a device specifically designed to provide three-phase AC excitation power for the generator excitation system, usually connected to the generator outlet. Due to the high output voltage of the generator and the low rated voltage of the excitation system, a step-down transformer is required.
Excitation transformers are mainly divided into four types according to insulation methods:
(1) Epoxy resin cast dry-type transformer.
(2) Alkali free fiberglass winding immersed dry-type transformer.
(3) MORA type dry-type transformer.
(4) Oil immersed transformer.
Transformer Features:
Pearl Electric designs and produces excitation transformers for epoxy resin cast dry-type transformers, which have the following advantages:
(1) High insulation strength, epoxy resin used for casting has an insulation breakdown field strength of 18-22kV/mm, and oil immersed transformers with the same voltage level have roughly the same lightning impulse strength.
(2) Strong short-circuit resistance.
(3) Outstanding disaster prevention performance, epoxy resin is flame retardant and can self-extinguish, without causing explosions.
(4) Excellent environmental performance, epoxy resin moisture-proof and dustproof, can operate under harsh environmental conditions.
(5) Low maintenance workload.
(6) Low operating loss, high operating efficiency, and low noise.
(7) Small size, light weight, convenient installation and debugging
Transformer Applications:
Excitation transformer is a device specifically designed to provide three-phase AC excitation power for the generator excitation system, mainly used to control and start the electromagnetic field of the generator. The following are the application scenarios of excitation transformers:
1- In large-scale power generation equipment such as thermal power plants, wind farms, and hydropower stations, excitation transformers are usually required. The excitation transformer can control the current and voltage output of the generator by changing the magnetic flux, thereby achieving the regulation and stability of the power system.
2- Excitation transformers are mainly used as excitation power sources in power systems to control and start the electromagnetic field of generators. The stability and accuracy of its output voltage have an important impact on the operation of the generator, the stability and quality of the output voltage.
3- Excitation transformers play an important role in the power system, providing a stable excitation power source to ensure the normal operation of equipment such as generators and transformers.
