Projects

Data Centres

Client:
Data Centre Project
Location:
United Kingdom

Description
An existing data centre substation built and maintained for over 20 years was replaced in 2017. Critically important to the data centre upgrade was to maintain security of supply to the existing data centre. This project involved transferring data centre supply from the network utility, onsite generation and fast responding uninterruptible power supplies to a modern designed switchgear arrangement with complete redundancy.  The new substation includes ten fire-separated high voltage switch rooms to house the new high voltage equipment.

Powercomm designed, procured, installed, commissioned and energised the new switch rooms with no loss of supply. This project involved:

• Design of the High Voltage system controls, protection, metering, remote switching panels and battery systems.
• Design of appropriate redundancy on aspects from battery systems to switchgear.
• Cable diversion works on the 11kV network
• Procurement of all electrical equipment
• Project management.
• Over 150 high voltage terminations.
• Commissioning of G59 protection relays including witnessed by the network utility.
• Full commissioning of each substation including high voltage cable circuits.

Project Summary

• On schedule
• 100% project successful completion
• Zero onsite incidents

Renewable Generation

Client:
Meenaward Windfarm and Rushfield 38kV Station, Ireland

Location:
Donegal, Ireland

Description
Ireland’s first contestable build 38kV AIS loop substation and 20kV Independent Power Producer (IPP) electrical substation to facilitate the connection of wind power generation to the electrical grid. Powercomm were the PSPD and PSCS for the project managing all civils aspects, liaising with ESB Networks, client developer and principal supply procurement.

Design and build package including procurement, construction, pre-commissioning and commissioning of all electrical and civil works.

The electrical project scope involved full Electrical Balance of Plant Works (EBoP) including procurement, construction, pre-commissioning and commissioning of all electrical and civil works.  Powercomm completed all necessary grid connection electrical and SCADA system for connection of the wind farm to the ESB Network, involving:

• A complete suite of power simulation analysis.
• Design of the outdoor air insulation substation (AIS) and indoor MV switchgear. The design comprised of a grid transformer, MV switchgear, protection relays, voltage/current measurement and ancillary equipment.
• Design of the power/control/communication cabling between the wind turbines, the wind farm substation and ESB substation.
• Installation of all assets.
• 20kV collector circuit cabling and jointing
• Site wide Fibre Optic Cabling system
• Commissioning of High Voltage system controls, protection, metering and battery systems.
• Submittal of Declaration of Fitness of IPP site

Project Summary

• Completed on schedule
• 100% project successful completion
• Zero onsite incidents

Client:
Gweedore Windfarm

Location:
Donegal, Ireland

Description
Cronalaght 2 Wind Farm was planned and built beside Mount Cronalaght Wind Farm which was one of Ireland’s first contestably built Wind Farms constructed in 1997. Cronalaght Wind Farm is a 5 x 3.45 Vestas Turbine Wind Farm connected at 38kV via a 4.6 km 630 mm2 solid Aluminium cable connection to Ardnagappery 110/38kV station. The project was executed as a design and build under Fidic yellow contract.

Design and build package included procurement, construction, pre-commissioning and commissioning of all electrical and civil works. Project managing all civil aspects, liaising with ESB Networks and client developer.

As PSCS, Powercomm were responsible for site welfare and safety of all employees and subcontractors working on the project.

Powercomm completed all necessary grid connection works for connecting the wind farm to the ESB Network, involving:

ESB Grid Connection:

• 38kV Grid cable installation
• 38kV Cable jointing – Pole-top connects, Straight-through joints, Screen extension joints
• Phasing
• Cable testing
• Liaising with ESB

ESB Keeldrum 38kV Substation – Civil and Electrical Works:

• Design of substation in E-Plan in line with ESB specifications
• ESB design reviews, weekly reporting and meetings
• Procurement of ESB approved equipment
• Manage safety onsite
• Construction of ESB building including internal Powercomm Civil Engineering Reviews
• Installation of all Steel and Electrical works
• Completion of all wiring
• ESB Pre-commissioning of substation and hand-over

IPP Cronalaght 38/20kV Substation – Civil and Electrical Works:

• Design of substation in E-Plan in line with Client Employer Requirements
• Fulfill Client design reviews, monthly reporting and meetings
• Procurement of equipment
• Manage safety onsite
• Construction of IPP building and Compound
• Design of the outdoor air insulation substation (AIS) with 38kV SF6 insulated Circuit Breaker and indoor MV switchgear. The design comprised of a grid transformer, MV switchgear, protection relays, voltage/current measurement and ancillary equipment.
• Design of the power/control/communication cabling between the wind turbines, the wind farm substation and ESB substation.
• Powercomm Quality reviews by Powercomm Civil & Electrical Engineers
• Installation of all Steel and Electrical works
• Completion of all wiring
• IPP Pre-commissioning and Commissioning of High Voltage system controls, protection, metering and battery systems.
• Submittal of Declaration of Fitness of IPP site

Wind Farm Collector System Works:

• Supply and termination of pre-ducted Fibre
• Supply, install and termination of power cables

Transmission and Distribution

Client:
Kilpaddoge 220/110kV substation
Location:
Co. Kerry, Ireland

Description
EirGrid planned the new Kilpaddoge substation in parallel with other transmission substations in the south west region. The driver for this substation as detailed in EirGrid’s Grid Strategy is security of supply and to replace some of the functionality of the existing Tarbert 220kV substation.

Killpaddoge is a Gas Insulation Substation using ABB ELK switchgear for both the 220kV and 110kV substation. The GIS 220kV station is a 20 bay eight-way dual busbar including three sectionalisers and two bus couplers. It is the most recently built 220kV GIS substation in Ireland and also has the largest number of bays built at one time.

Powercomm’s project scope involved commissioning and submitting the declaration of fitness (DOF) for the switchgear and protection relays.

Equipment testing, and commissioning included:

• Substation Earthgrid Impedance Testing.
• Substation Earthgrid Step and Touch Voltage Testing.
• 250MVA 220/110kV Transformer Tan-Delta, Ratio, DC Resistance & SCI
• 220/110kV VT & CT Ratio, Insulation, Class & Burden.
• SF6 Monitoring and lockout functions.
• Control, Indication & Alarms Verification with National and Local Control.
• ABB 220/110kV GIS Switchgear Control & Interlocking.
• 250MVA 220/110kV Transformer Stability Testing.

Protection relay testing and commissioning of the following:

• Siemens 7SA612 220/110kV Line Distance Protection.
• Toshiba GRL100-702D 220/110kV Line Distance/Differential Protection.
• Toshiba GRB100 220/110kV Busbar Differential and CBF Protection.
• Siemens 7SJ612 220/110kV Sectionaliser & Coupler Overcurrent Protection.
• 220/110kV Busbar Stability Testing
• Siemens 7SA612 220/110kV Transformer Impedance Protection.
• End to End Reclosing, Impedance & Differential Testing with Remote Stations.
• ABB RET670 220/110kV Transformer Differential & REF Protection.
• ABB Synchrotach5 Control Synchronising Scheme.
• Toshiba GRZ100 110kV Line Distance Protection.
• Toshiba GRL100-206B 110kV Line Differential Protection.

Project Summary

• Completed ahead of schedule
• 100% project successful completion
• Zero onsite incidents

Selection of other projects

Some of the larger projects we have being involved in are: