Siemens – Yunlin OWF – May to June 2024

Correll deployed 66kV AP to carry out isolations and earthing on the 66kV 8VM1 switchgear.

Following this the AP will carry out HV service works on transformer and switchgear.

Siemens – Yunlin OWF – June 2023 to August 2023

Correll have been requested to supply a 66kV SAP/HV Technicians to carry out the annual HV service campaign. This involves carrying out high voltage isolations, earthing and carrying out the HV service works on the WTG.

Synera Renewable Energy – Formosa 1 – April 2023 to May 2023

The Correll Group, Electrical Engineering Division were requested to supply a 33kV SAP to carry out the annual HV service campaign.  This involves carrying out high voltage isolations, earthing and carrying out the HV service works on the WTG.

Transmission Investment – Westermost Rough Onshore Substation – July 2018

CHVM was awarded a contract to upgrade 2 x Neutral Earth systems on the 220kV transformers.

Senvion – Nordergrunde OWF – October 2016 to February 2017 1.

Correll HV Management was contracted to CWind to provide termination, testing and commissioning activities on Senvion owned assets on the Nordegrunde OWF.  Correll engaged a project team of 8 specialist jointers, testers and commissioning engineers to perform the following activities:

• Pre-projects meetings
• Pre-projects Documentation, Procedures and RAMS
• Cable terminations on the 33Kv transformer, NKT CB 36-630
• Continuity, VLF and PD testing on the offline 33KV switchgear to transformer cable
• Secondary injection testing on the REF 630 relay system for the CT commissioning
• Commissioning works on the ABB ZX0.2 Switchgear & Switching activities
• Issue ITS as part of client request and payment milestones.

Westermost Rough off/on shore substation asset maintenance – 2016 to Present  1.

Correll HV Management has a long-term services agreement with CWind for completing periodic inspections on the following assets:

• HV transformer inspection
• HV switchgear inspections
• Transformer oil sampling
• Partial Discharge testing
• LV systems
• Visual inspections on cable routing.

Siemens Gamesa – May 2022 to February 2023 – Framework Agreement – HV/APs for HV Terminations/HV Switching within the WTGs

The Correll Group, Electrical Engineering Division has secured a framework agreement with Siemens Gamesa Renewable Energy to supply High Voltage (HV) Installation Technicians and Authorised Persons (APs) to perform HV Terminations and HV Switching within the Siemens Gamesa Wind Turbine Generators (WTGs).

Substantial investment into their directly employed technician’s future development enabled Correll to transfer their skill-set from inter-array and export cable campaigns, to topside WTG transformer tail installations, HV Switching and HV Terminations with ease.

Following on from the award, CEE have now identified technicians for the 2023 pipeline, and both in-house and external training is well underway to ensure all technicians meet both the Correll Electrical Engineering and Siemens Gamesa extremely high standards.

Siemens Gamesa demand the highest quality from their subcontractors and we at Correll are delighted to demonstrate full compliance throughout. We look forward to working together throughout the world.

Vattenfall – Kriegers Flak OWF – July 2022 to September 2022

The Correll Group – High Voltage Management division is delighted to announce that it has been asked to assist Vattenfall in the supply of PCEI’s for the annual HV Maintenance campaign.

The PCEI will carry out HV isolations, earthing and issue of safety documents.

SRE – Formosa 1 OWF – March 2022 to July 2022

The Correll Group – High Voltage Management division was awarded a contract from SRE to support with a Senior Authorised Person (SAP) and a Control Engineer to the Formosa 1 Offshore Wind Farm in Taiwan.

Correll will deliver works both offshore, on the Wind Turbine Generators and onshore on the substation. During the course of works Correll will also be carrying out a tailored HV training program that will authorise the local engineers to carry out safety of the system on their own HV networks.

Vattenfall – Kriegers Flak OWF – February 2022 to March 2022

The Correll Group – HV Management Division (CHVM) was awarded a contract from Vattenfall to supply two platform managers to oversee all works on the offshore substation for Kriegers Flak offshore wind farm – this involves all aspects of safely working offshore on a fully energised offshore substation platform.

Orsted – Burbo Bank Onshore Transformer Maintenance – October 2021

Correll Group, HV Management (CHVM) was contracted to Orsted and provided AP’s to conduct the inspection and replacement of a transformer leak at the onshore 33kV transformer.

GE – Merkur OWF – July 2018 to May 2019

CHVM was contracted to RTS Wind AG/GE and provided support with thirty-two HV and LV electrical technicians (SAP & AP’s), performing the following activities on the WTG:

• Completing works as team leaders of contracted companies
• Conducted HV switching operations and isolations
• Completing HV terminations on the transformer and GIS cable
• Completing LV works as per GE task cards
• Completing LV testing, IR, continuity and function tests
• Terminations of LV cables into the junction boxes
• Installation of fibre optical cable and termination

Transmission Investment – Westermost Rough Onshore Substation – July 2018

CHVM was awarded a contract to upgrade 2 x Neutral Earth systems on the 220kV transformers.

For further information contact Will Sharrock, Head of HV-Management: willsharrock@correllservices.com