Jiangsu Haixing Power answers questions 'How to implement forced excitation of generator sets?'

in order to improveGenerator setTo improve the stability of the operating system, many users will forcefully excite the generator during use. So why should forced incentives be implemented? What factors need to be considered for strong incentives? Jiangsu Haixing Power will tell you about improper post-processing methods. As a familyGenerator setA professional manufacturer of production and sales, Haixing generator sets specialize in science and technology. The main operating brands include: Cummins, Volvo, Dongfeng, Weichai, Shangchai and other diesel generator sets, which have passed national quality inspection and certification and received strong praise from customers.

First, why do we need to excite the generator set? What are the benefits of doing this?
In order to improve the stability of the generator operating system, the voltage can quickly return to the normal state after the short-circuit fault is removed. It is required that when the voltage drops to a corresponding value, the excitation energy of the generator will increase immediately, so the generator must implement forced excitation.

Second, what factors limit the time of forced incentives?
The strong excitation action means that the relay automatically short-circuits the magnetic field adjustment resistor of the exciter circuit, or the automatic adjustment excitation device of the generator set automatically and quickly adjusts the exciter to work at the maximum voltage to supply the generator set with sufficient excitation current.
The forced excitation of the generator can only play its due role when the strong excitation multiple is high, the excitation voltage rises quickly, and the strong excitation time is sufficient. Therefore, when the generator's excitation reaches the maximum value due to strong excitation, Do not interfere with the forced excitation action within 1 minute. After 1 minute, measures should be taken immediately to reduce the generator stator and rotor current to the normal allowable value.

Third, what are the dangers of not returning after a forced action? What should be done?
If there is no return after the strong excitation, the magnetic field resistance will be short-circuited for a long time. During normal operation of the generator, the rotor will withstand high voltage and be damaged.
According to the operating conditions of the generator, on the premise of ensuring normal operation, the forced excitation device that does not return can be cut off, the cause can be identified, and the fault can be eliminated before putting it into operation.