Challenges

• Lack of Infrastructure for Distributed Renewable Energy Control

  The ongoing integration of small-scale renewable energy sources requires an effective and scalable control framework

• High Cost of Traditional Systems

  Control systems designed for large-scale (hundreds of MW to GW) power plants are both cost-prohibitive and technically unsuitable for small-scale facilities

  • Dedicated communication line: ~USD 15,000/year
  • Dedicated equipment: ~USD 250,000

• Need for Flexible Control Modes

  Automated output control through EMS is essential, along with manual override capability for emergency response

• Performance Validation Requirements

  Automated performance testing is required to validate control capabilities of newly connected generators

Solutions

• Secure PKI-based Communication over Public Networks

  Implemented PKI encryption technology (commonly used in internet banking) to enable secure, internet-based communication

• Certified Encryption and Independent Certificate Management

  Utilized cryptographic modules certified by the Korea National Intelligence Service (KNIS) and deployed an internal certificate management system to enhance security

• EMS-Integrated Automated and Manual Control with Performance Testing

  Provided EMS-integrated automated output control, manual override functionality, and performance evaluation modes to ensure operational flexibility

• Indirect Output Control via Local EMS to Reduce Disputes

  Delegated control authority to each operator’s local EMS, minimizing potential disputes between power producers and market operators

• IoT-Based Cost-Efficient Device Architecture

  Adopted an IoT-based hardware design to significantly reduce equipment and operation costs

Applications & Benefits