Comprehensive Guide To Protecting Your Diesel Generator Set

As a leader in innovative power solutions, OWELL Generators is committed to providing reliable and efficient diesel generator sets. Proper maintenance and usage of these generators are crucial to ensure their longevity and performance. Here are key measures to prevent generator damage during daily operations:

1. Ensure Stator Winding Tightness

Regularly check that the ends of the stator windings are secure. Loose windings can cause phase-to-phase short circuits, leading to significant damage.

2. Prevent Cooler Water Leaks

• Inspection: During routine inspections, carry a flashlight to carefully check for any signs of water leakage or condensation on the cooler.
• Water Pressure: Ensure that the cooling water pressure does not exceed the rated value to prevent leaks.

3. Monitor Generator Negative Sequence Current

Keep an eye on the generator’s negative sequence current meter during operation. Early detection of anomalies can prevent rotor winding short circuits.

4. Prevent Stator Winding Phase-to-Phase Short Circuits

Regular checks and maintenance can help avoid phase-to-phase short circuits in the stator windings, ensuring smooth operation.

5. Avoid Generator Running in Non-Phase Conditions

If the main circuit breaker of the generator transformer group operates in a non-phase condition, the related protection system should immediately activate the breaker failure protection. If the main circuit breaker cannot be opened, disconnect all power sources connected to the same busbar.

6. Prevent Non-Synchronous Grid Connection

Ensure that the generator is not connected to the grid in a non-synchronous manner, which can cause severe damage to the equipment.

7. Avoid Local Overheating

If the generator overheats, take immediate action to reduce the temperature. If necessary, shut down the generator to address the issue.

8. Address Rotor Winding Ground Faults

In the event of a ground fault in the rotor winding, immediately identify the fault’s location and nature. If it’s a stable metallic grounding, shut down the generator for repairs.

9. Prevent Excitation System Failures

• Automatic Regulator: If the automatic channel of the excitation regulator fails, repair it promptly and bring it back into operation.
• Manual Operation: Avoid running the generator under manual excitation regulation for extended periods.
• Load Adjustment: During manual excitation regulation, adjust the generator’s reactive load appropriately before adjusting the active load to maintain static stability.

By following these preventive measures, you can ensure the reliable and efficient operation of your diesel generator set. OWELL Generators remains committed to providing top-quality power solutions and excellent customer support. Should you have any further questions or require assistance, please do not hesitate to contact us.