COURSE OVERVIEW:

In complex power distribution and interconnection networks, interlocking systems serve as the critical logic-based defense against catastrophic operational errors. This course provides a comprehensive technical exploration of the design, implementation, and maintenance of both mechanical and electrical interlocks. Participants will explore how these systems prevent dangerous conditions, such as paralleling unsynchronized sources, opening disconnectors under load, or gaining access to energized compartments.

The scope of this training addresses the logic structures used in modern substations, industrial plants, and utility interconnections. It covers the technical nuances of "Trapped Key" systems (Kirk Keys), electromagnetic solenoids, and the software-based interlocking logic found in Intelligent Electronic Devices (IEDs). The curriculum provides a detailed focus on the integration of interlocking with SCADA and Substation Automation Systems, ensuring that participants can manage the transition between physical hardware and digital logic.

Coverage includes the implementation of rigorous testing and commissioning protocols to verify that interlocking schemes remain fail-safe under all operating scenarios. Attendees will learn to troubleshoot complex logic "Hangs" and manage the risks associated with "Emergency Overrides" and "Bypass" procedures. By combining control theory with practical hardware management, the course equips professionals with the expertise required to ensure the operational safety and coordination of interconnected distribution networks.

COURSE OBJECTIVES:

After completion of this course, the participants will be able to:

• Define the primary functions of interlocking in power systems.
• Differentiate between mechanical, electrical, and logic interlocks.
• Design interlocking schemes for various busbar configurations.
• Implement "Trapped Key" systems for multi-source isolations.
• Configure electrical interlock circuits using contactors and relays.
• Program software-based interlocking logic in digital relays (IEC 61131).
• Manage the synchronization interlocks between generators and the grid.
• Troubleshoot "Logic Conflicts" in automated switching sequences.
• Verify the integrity of interlocks during commissioning and outages.
• Establish safe procedures for "Defeating" interlocks during maintenance.
• Analyze the impact of "Control Power Loss" on interlocking status.
• Ensure compliance with international standards for switching safety.

TARGET AUDIENCE:

This course is intended for Control and Instrumentation Engineers, Protection Engineers, Substation Designers, and Operations Managers.

TRAINING COURSE METHODOLOGY:

A highly interactive combination of lectures, discussion sessions, and case studies will be employed to maximize the transfer of information, knowledge, and experience. The course will be intensive, practical, and highly interactive. The sessions will start by raising the most relevant questions and motivating everybody to find the right answers. The attendants will also be encouraged to raise more of their questions and to share in developing the right answers using their analysis and experience. There will also be some indoor experiential activities to enhance the learning experience. Course material will be provided in PowerPoint, with necessary animations, learning videos, and general discussions.

The course participants shall be evaluated before, during, and at the end of the course.

COURSE CERTIFICATE:

National Consultant Centre for Training LLC (NCC) will issue an Attendance Certificate to all participants completing a minimum of 80% of the total attendance time requirement.