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Obstruction Light Control

Terma’s OLC is based on proven and reliable technology, ensuring continuous operation and low maintenance costs.


Introduction

The increasing size of wind turbines is creating safety and societal challenges for the wind industry, the authorities, and the surrounding municipalities when it comes to obstruction lighting and marking of wind turbines to comply with air traffic regulations.

Neighbor and municipality complaints

As wind turbines grow taller and enter the lower airspace, high intensity obstruction lights are needed. The high intensity lights required for higher wind turbines can appear very intrusive to wind farm neighbors and to an otherwise pristine night sky. The high intensity lights cause a growing number of delays and cancelations of wind farms due to complaints from neighbors and municipalities near planned wind farms. 

Terma’s Obstruction Light Control (OLC) vastly improves the success rate of wind farm deployments

These problems can be overcome by turning the obstruction lights on only when necessary, i.e. when there is an aircraft in the vicinity of the wind farm. Terma’s Obstruction Light Control (OLC) vastly improves the success rate of wind farm deployments, contributing to national climate objectives and at the same time greatly reducing light pollution caused by wind farms.

Solution Capabilities

Terma’s radar-based OLC integrates seamlessly with existing infrastructure, aviation obstruction lights, obstruction lights monitoring, control equipment, and lighting from leading vendors.

Combined with Terma’s professional services, our turn-key solution is the preferred choice for wind turbine generator manufacturers and wind farm developers.

Approvals

Terma has an extensive track record with approval authorities providing documentation, standard safety cases, and support. Terma’s know-how and domain leadership can be of great benefit in the approval process for planning and operational permits. Working with Terma is a long-term partnership from the approval process through to deployment or retrofit of the wind farm.

 


Benefits

The high intensity lights required for higher wind turbines can appear very intrusive to wind farm neighbors and to an otherwise pristine night sky

Wind Turbine Generator (WTG) manufacturer independent

  • Terma’s OLC integrates with existing infrastructure and lighting from leading WTG vendors.

Scalability / Deployment flexibility

  • for larger wind farms that typically have a scattered layout, the Terma sensor capabilities and deployment offerings enable flexible solutions, bringing down the total cost.

Extensive track record with approval authorities (SME capabilities)

  • each OLC installation typically requires a country-dependent, site-specific approval. Terma has an extensive track record with approval authorities, providing documentation, standard safety cases, and support.

Extended instrumented radar range ensures increased collision avoidance capabilities

  • extended range provides more ‘on time’ for collision lighting, thus providing the pilot with an extended warning period beyond legal minimum requirement.

Functionality

Terma’s SCANTER 5000 radar series is part of a comprehensive family of Terma radar products. SCANTER radars all benefit from fully digital signal processing and Solid State technology and provide extremely clear radar images with low probability of false alarms.

The past 5 years of committed field testing governed by independent international aviation authorities has resulted in superior wind farm mitigation capabilities. This enables the radars to truly co-exist with wind turbines without the need for blanking out wind farm areas. 

Terma's radars can truly co-exist with wind turbines without the need for blanking out wind farm areas

Terma’s SCANTER 5000 radar series provides:

  • True wind farm mitigation capabilities
  • Solid State Power Amplifier (SSPA) ensuring high reliability and availability
  • X-Band-based system
  • Small target detection capability
  • Detection of non-cooperative targets
  • Open architecture – integrates via TCP/IP network protocol.

Scalability
Terma’s radar sensor has a range of 18 km yielding in a total coverage of up to 1,000 km2, making the system ideal for larger wind farms and wind farms with a scattered layout. The exceptional range of the sensor also enables future developments and expansions of the wind farm.

Product Sustainment
The Terma SCANTER radar family has proven its performance, reliability, and sustainability in security applications all over the world. Based on Terma’s vast knowhow and best-in-class hardware and software technology, the SCANTER 5000 series provides our clients with a proven platform ensuring high availability (High Meantime Between Failure).

Service & Support
At Terma, we know the importance of keeping the blades spinning. That is why we offer Global Support & Service Agreements for up to 25 years, supporting long time sustainability and obsolescence management of our SCANTER products throughout the life time of the wind farm.