The cause of unstable frequency fault of generator set shall be judged from the place with high possibility and easy maintenance, and blind disassembly and inspection shall be avoided to increase the maintenance workload. From the analysis of the above fault causes, the causes of frequency instability can be divided into generator set problems and speed control system problems. Generally, the failure caused by the generator set is relatively common, and most engine management personnel are familiar with the diesel engine, so they can start with the generator set.

在排除油路问题的情况下，将喷油器拆下进行雾化试验，发现雾化效果良好，可排出喷油器问题。为了减少维修工作量，可以将整组喷油泵拆下换到另一台工作性能良好的柴油发电机组上进行测试。试验表明，该机组柴油机转速问题，电机发电频率正常。到此，可将柴油机问题引起发电机组频率不稳的原因排出，接下来对调速控制系统故障进行判定。

In the case of eliminating the oil circuit problem, first remove the fuel injector for atomization test. It is found that the atomization effect is good and the fuel injector problem can be discharged. In order to reduce the maintenance workload, the whole set of fuel injection pumps can be removed and replaced with another diesel generator set with good performance for testing. The test shows that the diesel engine speed of the unit is poor and the generator frequency is normal. At this point, the causes of generator set frequency instability caused by diesel engine problems can be eliminated, and then the fault of speed regulation control system can be determined.

将传感器拆下清洁后按安装间隙要求装复后，故障依然，可将转速传感器的因素排除；在发动机停机状态，短接控制器1、2脚，执行器应输出大油位，经检查发现输出电压正常，大供油量位置正确，电磁执行器与喷油泵齿条结合处没有松动现象，可将执行器的因素排除；那么引起记载频率不稳故障剩下一个原因了，就是电子调速器调整微分、增益调谐失灵。

After the sensor is disassembled and cleaned, it can be reinstalled according to the requirements of installation clearance. If the fault still exists, the factors of speed sensor can be eliminated; When the engine is stopped, short circuit pins 1 and 2 of the controller, and the actuator should output the maximum oil level. After inspection, it is found that the output voltage is normal, the position of the maximum oil supply is correct, and there is no looseness at the joint between the electromagnetic actuator and the fuel injection pump rack, so the factor of the actuator can be eliminated; Then the remaining reason for the instability of recorded frequency is the failure of electronic governor adjustment differential and gain tuning.

本文的精彩内容由燃气发电机组配件提供知识提供，本网站还有很多的精彩内容，更多的内容您可以点击进入：我们有专门的客服为您解答问题

There are many wonderful contents provided by the gas generator set website. You can click on the wonderful content of this article to enter the wonderful content of gas generator set: We have special customer service to answer your questions