1. Transient speed regulation rate

When the unit suddenly unloads the rated load and applies 50% of the rated load under no load, and then stabilizes, the remaining 50% is added. The instantaneous speed regulation rate should not exceed ± 10%, and the stabilization time should not exceed 5 seconds. Emergency units should be able to suddenly unload and apply 100% of their rated load, with the same instantaneous speed regulation rate and stability time as above.

2. Steady state speed regulation rate

The steady-state speed regulation rate of the unit should not exceed 5%.

3. Speed fluctuation rate

After setting the speed regulation characteristics, the speed fluctuation rate of the unit under no-load and various stable loads should not exceed ± 0.5%.

4. The insensitivity of the unit speed control system should not exceed 0.5%.

5. The bending direction of the speed regulation characteristic curve of the parallel operating unit should be consistent, and the nonlinearity of the characteristic curve should not exceed 0.2δst, where δst is the actual setting value for stable speed regulation.

6. The speed regulator of parallel operating units should have an adjustable mechanism to change the steady-state speed regulation rate δ st, so that its steady-state speed regulation rate can be adjusted to be basically consistent.

In summary, the speed regulation characteristics of marine generator sets are crucial to the stability and reliability of the ship's power system. By adopting advanced speed regulation technology and scientific maintenance methods, the speed regulation performance of the generator set can be significantly improved, ensuring the safe and reliable operation of the ship under various navigation conditions.