Whether a diesel generator set outputs DC or AC power depends on the generator it uses. If it uses an AC generator, it outputs AC power; if it uses a DC generator, it outputs DC power.
Modern diesel generator sets, including small diesel generator sets for home backup, are generally equipped with three-phase AC brushless synchronous generators. Therefore, they output AC power, typically 220V or 380V. However, when the rotor speed is below the rated speed, the voltage and frequency will be lower.
To overcome the impact of high temperatures on substation equipment, promptly eliminate grid operation problems, and ensure the safe operation of the grid during the high-temperature season, each power bureau, based on its actual situation, has launched a comprehensive inspection phase for high-temperature prevention during this year's "Peak Summer Power Demand" period. Enterprises are also constantly monitoring the operation of their respective generator sets.
The bureau's maintenance department, based on its actual situation, planned ahead and took preventative measures, formulating a special work plan for high-temperature prevention during the "Peak Summer Power Demand" period. Guided by the principle of "safety first, prevention foremost", and focusing on preventing substation outages caused by high temperatures and heavy loads, and preventing equipment damage accidents to main equipment such as transformers and GIS instrument transformers caused by lightning strikes, overheating, and overloads, we will carry out high-temperature prevention work in a planned, focused, and targeted manner based on the principle of combining investigation and treatment.
