Technical Requirements for Interconnection

Understanding the technical standards and requirements for grid connection

Key Technical Standards

Interconnection requirements are governed by a comprehensive set of technical standards that ensure safe, reliable, and compatible operation with the electrical grid. These standards cover electrical performance, protection systems, communication protocols, and testing procedures.

IEEE Standards

  • • IEEE 1547 - Interconnection requirements
  • • IEEE 519 - Harmonic control
  • • IEEE 929 - Recommended practices
  • • IEEE 2030 - Smart grid interoperability

UL Standards

  • • UL 1741 - Inverters and converters
  • • UL 1973 - Batteries for grid use
  • • UL 9540 - Energy storage systems
  • • UL 62109 - Photovoltaics safety

Interactive Technical Compliance Checker

Project Configuration

Technical Requirements

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Technical Considerations

Higher voltage projects require more stringent protection and testing requirements. Battery storage systems often have lower compliance complexity but require additional safety certifications.

Critical Technical Requirements

Power Quality Standards

  • Voltage regulation within ±5% of nominal
  • Power factor between 0.95 leading and lagging
  • Total harmonic distortion less than 5%
  • Voltage flicker within acceptable limits

Protection Requirements

  • Anti-islanding protection systems
  • Low voltage and frequency ride-through
  • Ground fault detection and protection
  • Overcurrent and overvoltage protection