Most of the diesel generator sets are used in parallel with multiple generator sets. So, do you know why the diesel generator sets are going to be paralleled, and what is its role? In fact, the diesel generator set has the opportunity to increase the load, automatically distribute the load capacity, and improve the power supply capacity. It is an applicable and economical method. The parallel grid-connected unit of Shandong Commler can be said to be the representative work of the power industry. The following is a brief introduction of the knowledge about the parallel generator of diesel generator sets.
Combining multiple operating generator sets to form a large-capacity power supply to supply power to the load or jointly to supply power to the grid is a measure to save costs and increase power supply capacity. A parallel system to achieve power supply to the generator when two or more generator sets are automatically combined in parallel when the mains fails. When the load is less than 60% of the rated capacity of a single generator set. When the system is adjusted, the system will issue a “subtraction” signal, and the standby generator will be unloaded and unloaded for automatic shutdown. If the load is greater than 80% (adjustable) of the rated capacity of a single generator set, the system will automatically issue an “enhancement command”, the standby generator set will automatically start, automatically parallel after automatic synchronization, and automatically divide the active load; The condition is that the voltage, frequency and phase of the two machines are the same. Commonly known as "three simultaneous."
The role of diesel generators
1. Improve the reliability and continuity of the power supply system. Because multiple units are connected in parallel into one grid, the voltage and frequency of the power supply are stable and can withstand the impact of large load changes.
2, maintenance, maintenance is more convenient. Multiple units are used in parallel, which can be centrally dispatched, and distributes active and reactive loads, making maintenance and repair convenient and timely.
3. More economical. According to the size of the online load, a small number of small power units can be put in order to reduce the fuel and oil waste caused by the small load operation of the high power unit.
4. Future expansion is more flexible. It is only necessary to install the power generation and parallel equipment of the current power. When the company needs to expand the grid capacity in the future, the generator set will be added, and the parallelization of the expansion unit can be conveniently realized, making the initial investment more economical.
The above is the knowledge of diesel generator sets. Commler recommends that users can understand whether it is necessary to parallel the diesel generator sets according to our needs.
