1、焦化发电机组调速装置有故障，使焦化发电机供油量忽大忽小，造成发电机组转速不稳定，使发电机输出电压和频率引起波动。

1. The speed control device of the coking generator set has a malfunction, causing the oil supply of the coking generator to fluctuate, resulting in unstable speed of the generator set and causing fluctuations in the output voltage and frequency of the generator.

　　2、励磁电路中，电压调节整定电位器接触不良或接线松动，旋转整流器接线松动，使励磁电流忽大忽小，引起发电机输出电压不稳定。

2. In the excitation circuit, poor contact or loose wiring of the voltage regulation setting potentiometer, loose wiring of the rotating rectifier, causing the excitation current to fluctuate, resulting in unstable output voltage of the generator.

　　3、励磁绕组对地绝缘受损，电机运行时绕组时而发生接地现象使电压波动。

3. The insulation of the excitation winding to the ground is damaged, and the winding sometimes experiences grounding during motor operation, causing voltage fluctuations.

　　4、自动电压调节器(AVR)励磁系统电路有故障，使AVR对励磁电流控制不稳定。

4. The automatic voltage regulator (AVR) excitation system circuit has a fault, which makes the AVR unstable in controlling the excitation current.

以上就是有关：焦化发电机组 的介绍，想了解更多的内容请点击：http://www.huannengpower.com 我们将会全心全意为您提供满分服务，欢迎您的来电！

The above is an introduction to coking power generation units. For more information, please click: http://www.huannengpower.com We will wholeheartedly provide you with full score service. Welcome to call us!