DG Synchronization Panels
Key Functions of a DG Synchronization Panel
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Synchronization:
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Matches the voltage, frequency, and phase sequence of multiple generators or a generator with the utility grid.
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Enables safe closing of breaker without causing electrical disturbances.
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Load Sharing:
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Automatically distributes electrical load between generators.
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Prevents overloading of a single generator.
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Auto Start/Stop:
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Generators start/stop automatically based on load demand.
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Reduces fuel consumption and wear-and-tear.
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Changeover Between Grid and DG:
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Seamless changeover in case of grid failure.
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Automatic or manual switching modes available.
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Generator Protection:
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Over/under voltage
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Over/under frequency
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Overload, reverse power, phase failure, etc.
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Monitoring and Control:
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SCADA or HMI interface for real-time monitoring.
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Remote control capability (optional).
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Main Components
| Component | Function |
|---|---|
| Control Relays | For interlocking and automation |
| Synchronization Relays | Controls voltage, phase, and frequency matching |
| Load Sharing Module | Manages power distribution among DGs |
| AVR (Automatic Voltage Regulator) | Maintains generator voltage |
| Speed Governor | Maintains engine RPM for frequency control |
| PLC or Microcontroller | Automation and logic control |
| Circuit Breakers/Contactors | Load connection/disconnection |
| Meters (V, A, Hz, PF) | Display electrical parameters |
| Alarms and Indicators | Fault and status display |
Types of Synchronization
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Manual Synchronization – Operator manually matches parameters.
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Semi-Automatic Synchronization – Assistance in alignment but manual breaker closing.
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Fully Automatic Synchronization – Fully automatic matching and connection.
Applications
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Hospitals
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Data centers
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Factories
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Large commercial buildings
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Utilities and substations
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Remote or off-grid installations
