The Albanian Optical Grounding Module refers to the Optical Ground Wire (OPGW) systems deployed by OST to modernize Albania's transmission network, combining grounding and fiber-optic communication capabilities.

Overview

Albania's transmission system operator, Operatore Sistemit Transmetimit (OST), has implemented OPGW technology as part of a hybrid telecommunication network to modernize and extend the national grid around Tirana and across the country . The OPGW serves a dual purpose: it functions as a shield/ground wire for high-voltage transmission lines while simultaneously housing optical fibers for telecommunications, enabling digital communication and grid monitoring .

Technical Features

• Construction: OPGW cables typically consist of a fiber-bearing stainless steel tube encased in a hardened aluminum pipe, surrounded by layers of aluminum-clad steel or alloy wires . This design provides mechanical strength, crush resistance, and thermal protection for the fibers.
• Fiber Capacity: Modern OPGW systems in Albania can house up to 96 optical fibers, grouped in color-coded bundles for easy identification .
• Mechanical and Electrical Performance: The cables are engineered to withstand environmental stresses such as wind, ice, and electrical faults, providing a path to ground without damaging the optical fibers . The aluminum layer enhances fault current capacity, while the compact design reduces weight and sag on transmission towers.
• Installation: OPGW can replace existing shield wires on overhead transmission lines, minimizing civil works and leveraging existing rights-of-way .

Role in Albania's Grid

OST's network includes 3,355 km of power lines and 2,100 km of optical ground wire, connecting 92 substations and supporting both domestic electricity transmission and cross-border exchanges . The OPGW-based hybrid network allows OST to:

• Transition from legacy TDM systems to packet-switched networks (PSN) for future-proof communication.
• Improve grid reliability and operational efficiency.
• Enable digitalization and advanced applications such as real-time monitoring and smart grid functionalities .

Manufacturers and Solutions

• AFL CentraCore OPGW: Features a compact, robust design with a central stainless steel tube inside an aluminum pipe, supporting up to 96 fibers .
• Prysmian OPGW: Offers aluminum-clad stainless steel designs with Spiral Space® technology to reduce fiber strain and improve installation flexibility .

Benefits

• Dual Functionality: Combines grounding and high-speed optical communication.
• Durability: Resistant to mechanical stress, environmental conditions, and electrical faults.
• Future-Proofing: Supports Albania's transition to digitalized, smart grid infrastructure.
• Efficient Installation: Uses existing transmission towers, reducing costs and deployment time. In summary, the Albanian Optical Grounding Module is a critical component of OST's modernized transmission network, providing both electrical protection and telecommunication capabilities to support Albania's growing energy and digital infrastructure needs .