SEL Engineering Services provides both custom and pre-engineered generator and microgrid synchronization systems.
Our teams have extensive experience designing complete synchronizing systems. These systems send control set points to any number of generators or inverters. An SEL relay at each point of coupling automatically closes the circuit breaker once acceptable slip, phase angles, and voltage differences are detected.
We provide systems and panels with automatic, manual, local, and remote functionality (or a combination thereof).
What SEL Can Do for You
Integration of Renewables and Microgrids
The library modules for our Real-Time Automation Controller (RTAC) family offer standardized interconnection controls for renewable generation sources. These pre-engineered function blocks simplify control of the point of common coupling (PCC) between the utility grid and a generation source and solve common interconnection issues.
Our synchronization solutions include the ability to proactively island microgrid generation sources and distributed energy resources, protecting utility equipment and preventing dangerous backflow conditions.
Aurora Assessment
An Aurora attack exploits gaps in traditional generator protection to intentionally open a breaker and close it out of synchronism, causing damage to connected power system equipment, such as generators, motors, and transformers.
The SEL team can help determine if your generation system is vulnerable to an Aurora-style attack—and protect it.
Simple, Secure, Relay-Based Protection
SEL supplies several types of pre-engineered synchronization systems using relays. Configuration and documentation are sold as a package for installation and commissioning. These solutions include:
- Advanced automatic synchronization systems using the SEL-700G Generator Protection Relay with a built-in automatic synchronizer function to provide a fully featured generator synchronizer with Synchroscope.
- Advanced automatic synchronization systems using the SEL-451 Protection, Automation, and Bay Control System to provide a fully featured conventional generator synchronizer.
- Simplified automatic synchronization systems using the SEL-751 Feeder Protection Relays designed specifically for microgrid PCCs.
Solutions With Targeted Features
SEL can provide solutions that include any combination of the following:
- IEEE 1547 voltage and frequency ride-through compliance
- Integration with protective relays
- Automated generator and inverter interfaces
- Proactive islanding
- Dispatch controls
- Demand response
- Fault circuit and open-circuit isolation
- RTAC libraries