Subsea Cable monitoring

NEW TECHNOLOGY PROTECTING SUBSEA CABLES

Using dark FO fibre in existing cables
Sensing cable deployed on the seabed
Detection of waterborne items of interest
such as:
- Anchoring, net dragging
- Third party interference
- Motorboats (e.g. if AIS is off)
- Unmanned underwater vehicles
- Diver delivery vehicles
- Cable condition monitoring
- Shallow water, low tide seabed, monitoring

KEY ADVANTAGES OF DAS FOR SUBSEA CABLE MONITORING

• REAL TIME 24/7
• PRECISE LOCATION AND TRACKING
• EARLY WARNING
• PREVENTION
• QUICK DEPLOYMENT
• COST EFFICIENT
• EASY TO OPERATE
• TIME SAVING
• NO NEED FOR POWER SUPPLY
• IMMUNE TO EMI
• CABLE LIFETIMES ARE EXTENDED

• RELIABLE
• EFFICIENT RISK MANAGEMENT TOOL
• LOW OWNERSHIP COST
• PREVENTATIVE MAINTENANCE CAN BE PLANNED WITH FOREKNOWLEDGE
• REDUCED OR ELIMINATED MAINTENANCE COST
• FAILURE CAN BE PREVENTED
• ENVIRONMENT FRIENDLY
• IMPOVEMENT OF INSURANCE PROFILE
• REDUCE SURVEY COSTS
• IMPROVE ASSET VALUE

A HIGH-TECH START-UP ESTABLISHED IN VIENNA, AUSTRIA IN 2023

Founders and executive officers have been driving DAS technology to the Energy market since 2008

a couple of bullets here?
and another one

15+ years of experience of hands on DAS R&D and systems project management to various customers.

Expert level competence in various DAS applications and R&D management

Backed up by the advisory team of industry experts.

Expert level competence in various DAS applications

Телефон

+7 (495) 191 51 91

info@wbi.ru

Адрес

129626, г. Москва, ул. 3-я
Мытищинская д. 16. стр. 5,
помещение 1, ком. 12

Case studies

Condition Monitoring Of Power Cables For Offshore Wind Farm In Scotland

Problem

Short circuit on main export cable

Uncertainty on exact fault location

Costly delays and offline power

Solution

DAS system deployment

Real-time fault detection with +/- 10m accuracy

Value delivered

Accurate fault location

Repair made within 1 week

Significant cost savings due to reduced downtime

While operating on an offshore wind farm in Scotland, midway between the Galloway and Cumbrian coasts, the operator experienced a short circuit on a main export cable approximately 15km in length, of which 13 km was located subsea. Until the fault could be located and repaired, 80MW of offshore power would be sitting idle.
Existing methods of fault location using a high voltage pulse generator indicated the fault was 2km offshore. A repair in this location would cost the operator £8M, in addition to placing the wind turbines offline for up to 6 months—accruing a potential loss of revenue of £90,000 per day. The existing technique is a manual and time consuming process to locate a fault. Even when operating well the accuracy of the existing location method is low (+/- 300 m on a 15 km cable).

With the FO cable already installed, DAS experts were able to mobilize quickly to access the site within 24 hours. In fact, the fault was located and verified within 4 hours of the team arriving on site.

The location of the discharge noise, which was caused by the generator, was determined using the DAS interrogator unit. This interrogator unit was able to detect the fault in minutes, to an accuracy of +/- 10m.

This accuracy allowed our experts to determine the fault was actually located on land, eliminating up to eight weeks of repair time at £10K per day and lost revenue for the operator. By identifying an onshore fault DAS service company additionally eliminated the need for high cost vessels and ROV’s.

Even though the fiber was located 2m away from the power cable, the DAS interrogator unit offers a long range capability of up to 100 km that allowed the fault to be easily and quickly detected onshore.

After the fault location was confirmed, the operator completed repairs within a week. As a result of the quick turnaround DAS technology enabled, the operator realized a significant cost savings, when compared to traditional fault detection techniques.