Project Overview

The 500kV Haiyang Nuclear Power to Laiyang Transmission Line Project is a key regional infrastructure initiative designed to support the stable and efficient delivery of electricity from the Haiyang Nuclear Power Plant to the Laiyang Substation. The transmission line begins at the 500kV outlet structure of the Haiyang Nuclear Power Plant and terminates at the 500kV incoming line structure of the Laiyang Substation.

Spanning a total length of approximately 57.7 kilometers, the line traverses diverse topographical conditions, including:

• Coastal zones (8.3%)

• Hilly regions (49.5%)

• Mountainous terrain (42.2%)

A double-circuit configuration on shared towers was adopted to optimize land use and transmission reliability. The project includes the construction of 141 transmission towers, with several located in shallow marine and intertidal zones, which required tailored foundation engineering and corrosion protection strategies.

Engineering & Construction Approach

1. Tower Design & Foundation Engineering

To address complex ground conditions, multiple foundation types were deployed based on site-specific geotechnical characteristics:

• Rock-inlay foundations for anchoring on solid bedrock.

• Dig-and-reinforce foundations in areas with softer soil.

• Vertical injection-type foundations to improve deep-soil anchoring.

• Oblique injection-type foundations designed for sloped surfaces.

• Bored pile foundations for coastal and loose-soil regions requiring enhanced load-bearing capacity.

For towers situated in shallow sea areas, marine pile foundations were applied to ensure stability against tides and wave forces. Anti-corrosion coatings and protective treatments were used to enhance structural durability in coastal environments.

2. Construction Planning & Execution

The construction process was carried out with attention to both safety and efficiency, including:

• Comprehensive site surveys for route planning and risk mitigation.

• Multi-modal transport systems such as ropeways, amphibious vehicles, and heavy-duty trucks for material delivery in remote and rugged terrain.

• High-precision tower erection using cranes and helicopter-assisted lifting where necessary.

• Controlled-tension stringing techniques to ensure conductor alignment and minimize mechanical stress.

• Environmental safeguards such as erosion control, vegetation restoration, and marine protection to reduce ecological impact.

Strict quality control protocols and real-time project supervision ensured that construction complied with national and industry standards.

3. Design & Technical Services

We provided full-spectrum engineering and consulting services throughout the project lifecycle, including:

• Route design optimization using GIS data and environmental analysis.

• Customized tower designs to meet wind, load, and corrosion resistance requirements.

• Grid integration planning with attention to electromagnetic compatibility and operational reliability.

• Protective surface treatments and galvanization processes to enhance lifespan in coastal conditions.

In addition, comprehensive feasibility studies and contingency strategies were developed to address potential technical and environmental challenges.

After-Sales Service & Maintenance

To ensure long-term performance and operational safety, our after-sales services include:

1. Scheduled Maintenance & Inspection

• Regular inspections of tower foundations, conductor tension, and structural integrity.

• Corrosion assessments and maintenance in marine-influenced areas.

• Monitoring of system performance to detect early signs of wear or degradation.

2. Emergency Response & Fault Repair

• 24/7 technical support for outage response and rapid fault resolution.

• Deployment of field teams for on-site repairs and component replacement.

• Remote diagnostics supported by system monitoring tools to reduce response time.

3. System Upgrades & Optimization

• Integration of smart monitoring technologies for real-time system analysis.

• Conductor enhancements and structural reinforcements based on future grid demands.

• Evaluation and implementation of performance optimization solutions.

4. Training & Technical Support

• Practical training programs for substation and grid operation personnel.

• Remote and on-site technical guidance for maintenance and troubleshooting.

• Continuous consultation on system upgrades and operational improvements.

Conclusion

The 500kV Haiyang–Laiyang Nuclear Power Transmission Line Project contributes to the development of a more resilient and efficient regional power grid. By facilitating the secure transmission of electricity from nuclear energy sources, the project supports long-term energy planning and reliability in Shandong Province.

Through the use of advanced engineering design, terrain-adapted construction techniques, and dedicated after-sales service, we aim to ensure the safe and sustainable operation of the transmission line for years to come.

For more information on our transmission solutions, tower systems, or technical consulting services, please contact us.