1. There are stability issues with diesel generator sets
The poor stability of diesel generator sets can be caused by various reasons, the most common of which is that when the load fluctuates significantly, it immediately leads to a mismatch and unbalanced state between the output torque of the diesel engine and the electromagnetic torque of the generator, resulting in fluctuations in the speed of the diesel engine and ultimately causing voltage and frequency fluctuations. Another common phenomenon is that diesel generator sets have a smaller capacity compared to the power grid supply system. If the reactive load and the power done by components absorb a large amount of useless power from the generator during the establishment of the magnetic field during operation, it will lead to a significant decrease in power factor and lower power quality.
2. Stability Solution for Diesel Generator Sets
The stability guarantee of diesel generator sets requires the stability of the diesel engine speed even when the load is constantly changing, which requires the adjustment of the diesel engine speed. Effective adjustment of engine speed can ensure that the diesel engine can adjust the fuel supply of the fuel injection pump by changing the speed even when the external load fluctuates or changes significantly during operation to ensure the stability of the speed. So the optimal solution for the stability of diesel generator sets is a high-performance governor. When the diesel engine is running at high speed, the governor can effectively prevent the occurrence of "runaway" phenomenon, and during the idle process, it can also make its operation very stable. Even when the engine speed is at a certain value between idle and high speed, the governor can limit its speed to be very stable, and its fluctuation is small, thus tending towards stability.
