Back to top
Reported by LOC Renewables on 22 November 2018

Offshore Wind Needs Latest Tech to Tackle Challenge of Growing Cable Lay Operations

(Courtesy of LOC Group)

LOC Renewables recently brought together a group of leading cable designers, underwriters and installers to discuss new approaches to reducing risk in the cable lay arena. The symposium, “Reducing Risk in Offshore Wind Cables”, was held at London’s Tower Bridge, and allowed delegates to hold an open discussion of the state of the industry and share expertise in order to guide industry best practices and procedures in future projects.

With an ever-expanding network of underwater cables delivering power from offshore wind projects, cable faults continue to account for the majority of insurance claims in the industry. Together, inter-array and export cabling account for almost half of all losses, due to mishandling during installation and in-situ damage. As offshore wind farm cabling has grown from a few kilometres to hundreds of kilometres per farm, fresh engineering challenges have arisen: not only must the cables be deployed safely, but any problems are more difficult and expensive to repair.

LOC Renewables representatives elaborated on how modern engineering solutions are rising to the fore as a way to address such logistical problems. Roberto Longo of Longitude, an LOC Renewables company, discussed how the evolution of the industry has been accompanied by technological advances, which now allow dynamic analysis to assess the range of scenarios faced when laying cables. In the future, real-time simulations may lead to ever more effective ways to assess factors such as load and weather events in order to anticipate the stresses faced by cables.

Supporting cable lay operations is the marine warranty surveyor, who, as Project Director Mike McLachlan described, can act as a sounding board for resolving installation issues and implementing new technology. By ensuring that projects remain within acceptable levels of risk, marine warranty survey allows new technologies and ideas to be implemented effectively and safely to maximise their value to the project.

In order to encourage a collaborative approach to cable risk reduction, the event also featured talks from a pool of experts who shared knowledge on insurance, manufacturing, operation, installation and repair. The variety of presentations covered technical, project management, and financial details of each stage of offshore cabling, alongside the wider industry context and the new challenges posed to cable installers by the development of floating wind.

LOC Group Joint-CEO, Dr RV Ahilan, said, “Cables, both inter-array and export, are essential for the offshore wind sector, but historically have experienced a high failure rate. LOC have supported many repair operations in recent years and have built a significant experience base. In order to improve cable resilience the industry needs a strong forum where it can share and assess the best ideas for reducing cable failure risk, thereby ensuring the success of future offshore developments.”

The cable symposium took place at Tower Bridge in London on 11th October 2018.

References

[1]

LOC Group. Press release - Offshore Wind Needs Latest Tech to Tackle Challenge of Growing Cable Lay Operations. URL: https://loc-group.com/renewables/news/offshore-wind-needs-latest-tech-to-tackle-.... [Date Accessed: 22/11/2018].

Transmission

04 Dec | ABB commissions first digital substations in Italy

ABB Ability™ based technology to boost efficiency and enable supply of clean wind energy

Transmission

18 Sep | Balfour Beatty innovation puts connections in pole position

Scottish and Southern Electricity Networks (SSEN) and Balfour Beatty have successfully energised the connection for Dorenell wind farm in Moray. The wind farm connection, which will add capacity for a further 220 MW of renewable energy to the GB transmission system, has seen the deployment of composite poles, the first time this innovative technology has been used on the GB transmission system.

Transmission

03 Apr | Vestas award Roan Wind Farm contract to DELPRO Wind

DELPRO Wind has been chosen by Vestas as HV Installation partner for Norwegian onshore project Roan wind farm, which is the first part of the very large Fosen wind farm.

Transmission

08 Mar | Turkey’s TEIAS relies on ABB technology to integrate renewables

2018-03-08 - The Turkish electricity transmission company TEIAS is striving for greater sustainability and reliability of electricity transmission with the help of ABB technology