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全自动发电机发生振荡如何处理
编辑:广东瓦格耐电力科技有限公司   发布时间:2018-01-02

全自动发电机发生振荡如何处理

全自动发电机发生重大扰动时,发电机与操作人员的有功平衡将遭到破坏,这是,由于发电机转子有转动惯性,发电机功率需要一个改变的过程,这一期间,功率不能平抗衡,发电机无法稳定运行就会发生振荡。振荡发生时,应作如下处理:

       1、由发电机非同期并列或失磁而引起振荡, 应立即将该机解列;

       2、若振荡是由于发电机励磁调节器有异常引起,应立即将发电机故障励磁调节器切至备用励磁调节器运行;

       3、当全自动发电机出现振荡时,应不待调度的指令立即增加发电机的励磁电流提高无功出力;

       4、当全自动发电机出现振荡时,若发现频率降低应不待调度指令,增加机组的有功出力至最大值,直至振荡消除。

       5、当全自动发电机出现振荡时,若发现频率升高应不待调度指令,减少机组有功出力以降低频率,但不得使频率低于49.5Hz,同时应保证厂用电的正常供电。

       6、汇报调度,并听侯调度指令。

 

Generator how to deal with oscillation

When a major disturbance occurs to the generator, the active balance between the generator and the operator will be destroyed. This is because, due to the rotor inertia of the generator, the generator power needs a process of change. During this period, the power can not compete well, Oscillation occurs when the generator fails to operate stably. Oscillation occurs, should be treated as follows:

1.Caused by the generator side by side mismatch or loss of excitation caused by oscillation, the machine should be immediately dissolved;

2. If the oscillation is caused by the generator excitation regulator abnormalities, the generator fault excitation regulator should be immediately cut to spare excitation

3. When the generator oscillates, it should not need to be dispatched to increase the excitation current of the generator to increase the reactive power immediately.

4. When the generator is oscillating, if it is found that the frequency is lower, it should not be dispatched, and the unit should be added The active output to the maximum, until the oscillation is eliminated.

5. When the generator is oscillating, if it is found that the frequency increase should not be scheduled to reduce the unit active power output to reduce the frequency, but not to make the frequency lower than 49.5Hz, at the same time should ensure the normal power supply of the plant electricity.

6. report scheduling, and listen Hou scheduling instructions.

 


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