Synchronising Panels

A generator cannot deliver power to a running network unless all electrical parameters match those of the network exactly; the same frequency, voltage, phase angle, and so on.

Synchronisation is required when using two or more generators to supply power for a total load that exceeds the capabilities of a single generator. Since electrical loads do not remain constant, the power from multiple engine generators needs to be interconnected and operate in parallel to handle larger loads. Using a series of small units instead of a single generator is known as a parallel operation.

• Reliability: With multiple alternators, parallel operation is much more reliable than single-unit generators. In a single-unit system, the whole setup will shut down if a single generator fails. In parallel systems, one generator can fail, and the other units will keep the power system active.
• Maintenance: If a unit needs maintenance, the other systems can remain running to prevent your entire operation from stopping.
• Load variation: Load requirements may vary throughout the day. A parallel system can accommodate higher and lower loads with more or fewer active systems.
• Fuel efficiency: Generators run at the highest efficiency when they operate at their load rating. By adding or subtracting generators seamlessly, the system can always remain efficient, reducing unnecessary power consumption.
• ‍Add or subtract power: Bigger operations require more power. With more generators, systems have more power for increased capacity.

• Phase sequence: The three phases of the alternators in your system must have the same phase sequence as the phases of your electric grid or bus bar.
• Voltage magnitude: Voltage magnitude can cause significant disruptions if the alternators and bus bar are not parallel. When the alternator voltage is higher than the bus bar, you'll create a high reactive power in your grid that could pose safety concerns. If the electrical voltage is lower, the generator will absorb high reactive power from the bus bar and potentially fail.
• Frequency: When frequencies are unequal, they create an unstable flow of energy. This instability can lead to damaged equipment.
• ‍Phase angle: The phase angle of the bus bar and generator must be zero.

Synchronisation panels let you control the synchronisation of power systems to deliver large amounts of electricity, which is often necessary when working in commercial and industrial settings. 

Generator Rentals NZ has years of experience in supplying synchronisation panels and other power solutions like BESS systems and load banks. Whatever your requirements, our team can arrange a tailored solution for your worksite.