Project Overview

The 500kV Haiyang Nuclear Power to Laiyang Transmission Line Project is a critical infrastructure development that enhances the regional power supply and ensures stable electricity transmission from the Haiyang Nuclear Power Plant to the Laiyang Substation. The project begins at the 500kV outlet structure of the Haiyang Nuclear Power Plant and ends at the 500kV incoming line structure of the Laiyang Substation.

The transmission line spans a total length of 57.681 kilometers, traversing diverse geographical terrains, including:
• Seashore landform: 8.3%
• Hilly terrain: 49.5%
• Mountainous terrain: 42.2%

To ensure efficient power transmission, a double-circuit on the same tower design was adopted, with a total of 141 transmission towers constructed. Among these, three towers are located in shallow sea waters, while one tower is positioned on the beach, making the foundation engineering particularly challenging.
Engineering & Construction Approach

1. Tower Design & Foundation Engineering

Given the complex terrain, a comprehensive foundation design strategy was implemented. The project required multiple foundation types to accommodate different geological conditions, including:
• Rock inlaying foundation – Used for securing towers on rocky surfaces, ensuring stability.
• Picking and digging foundation – Applied in areas with soft soil for deep reinforcement.
• Straight injection pull-type foundation – Designed for areas requiring deep penetration to enhance structural integrity.
• Oblique injection pull-type foundation – Used in locations with inclined surfaces to counteract horizontal forces.
• Bored piles foundation – Implemented in coastal and loose-soil areas to enhance load-bearing capacity.

For the towers located in shallow sea areas, advanced marine pile foundation techniques were utilized, ensuring resistance against water erosion and tidal forces. Special anti-corrosion measures were also applied to tower structures in coastal zones to enhance durability.
2. Construction Plan & Execution

To ensure high-quality construction and timely completion, the following execution plan was implemented:
• Survey & Site Preparation: Detailed topographical and geological surveys were conducted to assess terrain conditions and optimize the transmission line route.
• Material Transportation & Logistics: Given the mountainous and coastal terrain, specialized aerial ropeways, amphibious transport, and heavy-duty vehicles were deployed to transport materials efficiently.
• Tower Erection: High-precision crane operations and helicopter-assisted lifting were used in challenging terrains to ensure the safe installation of steel lattice towers.
• Conductor Stringing: Advanced tension stringing techniques minimized sagging and ensured proper alignment of high-voltage conductors across the transmission corridor.
• Environmental Protection: Special attention was given to ecological preservation, including erosion control measures, vegetation restoration, and marine protection in shallow sea areas.

Strict adherence to safety standards, quality control, and real-time project monitoring ensured seamless execution and compliance with national and international power grid standards.
3. Design & Technical Services

Our company provided end-to-end design and technical consulting services for this project, covering:
• Route Optimization & Structural Analysis: Leveraging advanced GIS mapping and load simulations to determine the most efficient transmission path.
• Custom Tower Design: Engineering robust tower structures tailored to withstand varying environmental and load conditions.
• Electromagnetic Compatibility & Grid Integration: Ensuring seamless synchronization with the existing power grid while minimizing electromagnetic interference.
• Anti-Corrosion & Weather Resistance Solutions: Implementing special coatings and galvanization techniques to extend the lifespan of transmission structures.

Our engineering team conducted comprehensive feasibility studies, risk assessments, and contingency planning to address potential challenges in construction and long-term operation.
4. After-Sales Service & Maintenance

We are committed to providing long-term operational support through our dedicated after-sales service team. Our services include:
• Regular Maintenance & Inspection: Scheduled tower integrity checks, conductor tension analysis, and corrosion assessments to ensure optimal performance.
• Emergency Response & Repair Services: 24/7 support for damage assessment, fault diagnosis, and rapid repair in case of extreme weather or unexpected failures.
• Technology Upgrades & Optimization: Continuous improvement strategies such as upgrading conductors, integrating smart monitoring systems, and reinforcing tower structures based on evolving grid demands.
• Training & Technical Support: Providing on-site and remote training for power grid operators to ensure smooth operation and maintenance of the transmission system.

The 500kV Haiyang Nuclear Power to Laiyang Transmission Line Project is a landmark development in China’s power infrastructure, significantly enhancing the region’s energy reliability and transmission efficiency. By leveraging innovative engineering solutions, advanced construction techniques, and comprehensive after-sales support, we have ensured a safe, stable, and sustainable power transmission system that will serve the region for decades to come.

For inquiries or further information about our transmission solutions, tower manufacturing, or technical services, feel free to contact us today!