15534 Marlborough College Grid Connection and Infrastructure Project

15534 Marlborough College Grid Connection and Infrastructure Project

Marlborough College Grid Connection and Infrastructure Project

Case study 15534

Name of Client and Location: Marlborough College (Norwood Hall).
Project Value: £225,000
Duration of the Project: Commissioned April 2019
Services: New Grid Connection and Infrastructure
Market Sector: Education
Powersystems Fact:

Marlborough College background

Powersystems were responsible for the design, installation, testing and commissioning of the electrical infrastructure associated with this project. This consisted of a new electricity 1000KVA HV & LV connection from SSE point of connection to the new Norwood Hall utility building.

Marlborough College is a co-educational independent school for day and boarding pupils located in Marlborough, Wiltshire. Founded in 1843 for the sons of Church of England clergy, it is now fully co-educational.

The site of Marlborough College was formerly occupied by Marlborough Castle, first mentioned in documents of 1138, although it is thought to have been built soon after 1066. Recent radiocarbon dates taken through the Marlborough Castle mount show the main body of it to be of Neolithic origins. The grade II park and garden is registered under the Historic Buildings and Ancient Monuments Act 1953 within the Register of Historic Parks and Gardens by Historic England for its special historic interest.

 

Project Facts and Figures:

  • Total installed capacity: 1.0 MW
  • Length of 11 kV underground cabling: 880m
  • 1000KVA 11/0.4 kV transformer and ancillary plant
  • Powersystems are a Lloyds registered (NERS) approved independent connection provider (ICP)
  • Merlin was buried here!
Marlborough College
Marlborough College Infrastructure Project

Powersystems Partnerships

The electrical work was undertaken in partnership with Stepnell on behalf of the client, Marlborough College.

Marlborough major design considerations:

And, as if by magic… Powersystems engineers designed the 880m cable route around the mound where the legendary wizard Merlin is purported to have been buried dating back to 2400BC.

The Marlborough Mound has been one of the biggest mysteries in the Wessex landscape, used as a castle and then became an important fortress for the Norman and Plantagent kings meant that the Powersystems team gave tremendous consideration to the routing of the underground cables

to ensure this beautiful site was preserved.

Marlborough major design considerations

How Powersystems helped:

As a Lloyds accredited contractor, Powersystems were appointed to design, supply, install, test and commission a new 11kV connection from the SSE point of connection to the new 1000KVA substation with LV connection to the new utility switchboard.

In August 2018 Stepnell appointed Powersystems to carry out ICP contestable works including all the civil and electrical works to facilitate a complete installation which SSE would adopt.

Civil works included some 880m of buried ducting with cable joint pits run underneath the Marlborough College grounds and road network.

Powerystems managed the Section 50 notices, licence bonds and traffic management for the Pewsey road crossing to the point of connection.

Powersystems scope of works:

The major items of electrical plant that Powersystems designed, supplied, installed, and commissioned were:

  • 1000KVA 11/0.4kV transformer and ancillary plant
  • 11kV Trident FRMU Mk2
  • 1600A Aculok transformer mounted LV distribution cabinet complete with auxiliary terminals and metering current transformers
  • Envico GRP enclosure
  • CoP3 metering cabinet
  • Earthing system at the substation
  • Cable laying of 880m of 11kV
  • Testing and energisation of the sub-station in accordance with Powersystems Electrical Safety rules until handover to the client.

The results:

  • Following some legal (Wayleaves) Marlborough College (Norwood Hall) grid connection and works was energised during the Easter shutdown in April 2019
  • The SSE point of connection tie-ins and all final testing took place over 1 day
  • Powersystems successfully moved the Norwood Hall facility at Marlborough College from a temporary generator to a permanent grid supply and was handed over to SSE for integration into their network

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14549 Goole Fields II Wind Farm

14549 Goole Fields II Wind Farm

Goole Fields II Wind Farm

Case study 14549

Name of Client and Location: RWE npower renewables
Project Value: £4.8m
Duration of the Project: Commissioned June 2016
Services: Wind Farm Electrical Infrastructure, 33kV Balance of Plant (eBoP), 66kV Grid Connection (adopted by Northern Power Grid)
Market Sector: Renewable Energy
Powersystems Fact: Powersystems your high voltage specialist partners – Powersystems Renewable Energy team have connected 27% of all U.K. land based wind farm generation

Goole Fields II wind farm background

Powersystems were responsible for the design, installation, testing and commissioning of the electrical infrastructure associated with this project. This consisted of a 66kV grid connection which was adopted by Northern Powergrid (NPG) as well as the electrical works for 17 Senvion 2.05MW MM92 wind turbines.
Goole Fields II wind farm is a 35MW capacity wind farm situated in the East Riding of Yorkshire, England. Granted full planning permission in 2016, the wind power generation site began generating clean renewable energy in June 2017.
The wind farm site extended to the existing Goole Fields wind farm, which was constructed in 2014, from 16 to 33 turbines, with a total rated output of over 67 MW. The average annual generation expected at Goole Fields and Goole Fields II would be equivalent to the domestic needs of around 38,000 average UK homes.

 

Project Facts and Figures:

  • Number of turbines: 17
  • Wind turbine capacity: 2.05MW
  • Totalled installed capacity: 35MW
  • 66kV circuit breaker with integral disconnectors & earth switches (ABB Pass Unit)
  • 39MVA 66/33kV grid transformer
  • Length of onsite 33kV underground cabling: 32km
Goole Fields II wind farm

Powersystems partnerships

The Balance of plant, electrical works and the 66kV Grid connection were undertaken by Powersystems UK Ltd on behalf of Farrans Construction, carrying out the 12-month project on behalf of client Innogy.

Goole Fields II wind farm Major design considerations:

Initial design studies for the substation highlighted that the 39MVA 66/33kV grid transformer would produce significant voltage dips when energised. The design studies indicated that the 66kV voltage would dip by 14.9% when the transformer was switched on, well in excess of the Engineering Recommendation P28 limit of 3%.

To overcome this, Powersystems engineers installed and commissioned a point-on-wave controller with the 66kV circuit breaker in order to limit the transformer inrush current and ensure the voltage dips complied with the P28 standard.

Powersystems also designed, installed and commissioned 17 external 33kV package substations for the wind turbine transformers. The package substations were designed to meet the high security and anti-vandalism requirements of the client, and provide remote control and monitoring of the 33kV switchgear and transformers.

 

Goole Fields II wind farm development:

Powersystems were appointed by Innogy to design, supply, install, test and commission a 66kV outdoor open-terminal substation and also carry out the electrical works infrastructure for 17 Senvion MM92 wind turbines.

The 17 turbine extension to the operational Goole Fields wind farm in the East Riding of Yorkshire near Goole by RWE, generates circa 35MW of electricity.

The Goole Fields II onshore wind farm was operational in 2017,

Goole Fields Wind Turbines

How Powersystems helped:

Powersystems were appointed by Innogy to design, supply, install, test and commission a 66kV outdoor open-terminal substation and also carry out the electrical works infrastructure for 17 Senvion MM92 wind turbines.

The major items of electrical infrastructure were as follows:

  • 39MVA 66/33kV transformer and ancillary plant
  • 66kV cable sealing ends
  • 33kV neutral earthing resistor (NER)
  • 33kV cable connecting turbines and switchgear building
  • Cable laying of 33kV, fibre optic communications and earth cables
  • 66kV circuit breaker with integral disconnectors, VT’s, and earth switches (ABB Pass Unit).
  • 66kV control and protection panels for the transformer including point-on-wave controller and auto-voltage regulator (AVR) relay.
  • Building
  • 33kV switchgear, protection and control
  • Auxiliary transformer circuit breaker
  • 110V DC battery charger
  • 33kV terminations
  • Domestic supplies, including heating, lights and small power
  • 50kVA 33/0.415kV auxiliary supply transformer
  • Signal control and multicore wiring to SCADA system
  • Electrical design and grid compliance studies
  • Insulation co-ordination study
  • Lightning protection study
  • Earthing study
  • Earth system
  • Turbine earth electrodes
  • Switchgear/metering building earth electrodes
  • Outdoor open terminal substation earth electrode
  • 17 No. 33kV external turbine transformer package substations
  • 5MVA 33/0.69kV transformers
  • Distance local control panel
  • 33kV switchgear, protection and ancillary services

The results:

  • Goole Fields wind energy project was officially opened in 2016
  • The £12.7m Goole Fields II was a successful extension to the £5.5M Goole Fields wind farm

Environmental Benefits

  • The community fund will invest in the region of £1.61 million over the operational lifetime of the wind farm.
  • £250,000 community fund is available each year

Economic Benefits

  • With a total installed generating capacity of 35 MW, the Goole Fields II development has the potential to make an important contribution towards helping tackle climate change, and to securing the U.K.’s energy supply.
  • Goole Fields II wind farm could also meet the demands of the equivalent of up to 22,100 average U.K. households each year.
  • Goole Fields I and II have a total rated output of 67MW and would meet the domestic needs of 38,000 average UK homes.

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Powersystems UK Delivering Greener Power Solutions

13920 Fraisthorpe Wind Farm Project

13920 Fraisthorpe Wind Farm Project

Fraisthorpe Wind Farm Project – Renewable Energy

Case study 13920

Name of Client and Location: BayWa r.e. and Octopus Investments
Project Value: £4.0m+
Duration of the Project: Commissioned June 2016
Services: Wind Farm Electrical Infrastructure, 33kV Balance of Plant (eBoP), 66kV Grid Connection (adopted by Northern Power Grid)
Market Sector: Renewable Energy
Powersystems Fact: Powersystems your high voltage specialist partners – Powersystems Renewable Energy team have connected 27% of all U.K. land based wind farm generation
Powersystems were responsible for the design, installation, testing and commissioning of the electrical infrastructure associated with this project. This consisted of a 66kV grid connection which was adopted by Northern Powergrid (NPG) as well as the electrical works for nine 3.3MW Vestas V112 wind turbines.
Fraisthorpe wind farm is a 29.7MW capacity wind farm situated in the East Riding of Yorkshire, the site is just 2 miles (3.2 km) south of Bridlington and 40 miles (64 km) east of York, England.

The site was granted full planning permission in early 2015 when the Ministry of Defence dropped their objection to the site. This was despite the apparent vocal opposition by local people and councillors.

The site was initially proposed to house fifteen turbines and then reduced to nine turbines by TCI Renewables in 2012.

The wind farm was powered up in August 2016, with BayWa r.e selling the site three-months later to Octopus Investments. BayWa r.e continues to operate and service the site as part of the deal.

 

Project Facts and Figures:

  • Number of turbines: 9
  • Wind turbine capacity: 3.3MW
  • Totalled installed capacity: 29.7MW
  • Length of 66kV underground cabling: 5km
  • Length of onsite 33kV underground cabling: 18km
  • Length of directional drilling under railway track: 100m
  • 33kV capacitor bank: 3.5 MVAr
  • 66/33kV high impedance transformer: 36MVA
  • Powersystems have connected 24% of all onshore UK windfarms
Northern PowerGrid
Bayware

Fraisthorpe wind turbines:

The site consists of nine 3.3 MW wind turbines that produce a collective 29.7 MW of power. The wind farm provides enough electricity to power over 22,500 homes and stops over 48,000 tonnes (53,000 tons) of carbon dioxide gas from entering the environment.

Initial approval for the nine 420 feet (130 m) turbines and an associated 260-foot (80 m) meteorological mast was granted in January 2013.

The wind power generation site began generating clean renewable energy in August 2016. The wind turbines were initially shipped to Immingham Dock but safety concerns regarding the transportation of such large structures to site meant that they were unable to cross the Humber Bridge. Instead, the 197-feet (60m) blades took a circuitous 100-mile journey to avoid this route and arrive safely at Fraisthrope.

Powersystems Partnerships:

The electrical work was undertaken in partnership with Jones Bros Civil Engineering on behalf of the client, BayWa r.e. GmbH.

Fraisthorpe wind farm major design considerations

Northern Powergrid set out strict connection requirements that needed to be met in order for the grid to accommodate the wind farm at 66kV. Powersystems design engineers used innovative design methods to meet these requirements and allow the customer to start selling energy to the electricity network.

The first of these was to design infrastructure which ensured Northern Powergrid’s 66kV network would remain stable should faults occur on the windfarm. This was important in order to prevent any unnecessary outages on the grid. The inclusion of a high impedance 66/33kV transformer tackled this problem without compromising the overall performance of the customer’s network.

Powersystems and the Fraisthorpe wind farm development:

  • Powersystems were appointed to design, supply installation, testing and commission a 33kV grid connection for adoption by Northern Power Grid (NPG) and substation auxiliary 11kV supply.
  • As well as to design, supply, install, test and commission the electrical works infrastructure for 9No 3.3MW Vestas V112 wind turbines.
Fraisthorpe Wind Farm Project

How Powersystems helped:

As a Lloyds accredited contractor, Powersystems were appointed to design, supply, install, test and commission a new 66kV substation and 5km 66kV cable route for adoption by Northern Powergrid (NPG).

Powersystems installed a 5km 66kV ducted cable route in a mix of carriageway, footpath, verge, and agricultural land. This included a horizontal directional drill (HDD) under the Yorkshire Coast Railway Line. Powersystems liaised with Network Rail to ensure the 100m drill was compliant with their standards.

Due to the coastal location of the 66kV substation, we undertook a flood risk assessment. As a result, the substation compound was elevated 750mm above the surrounding land to ensure that it would be unaffected in the event of a flood.

The high impedance 66/33kV transformer gave rise to further design considerations.  To overcome the reactive power losses in the transformer, we designed and installed a 3.5 MVAr 33kV capacitor bank to guarantee that the windfarm would operate within Northern Powergrid’s power factor limits for the connection.

Powersystems scope of works:

The major items of electrical plant that Powersystems designed, supplied, installed, and commissioned were:

  • 36MVA 66/33kV transformer and ancillary plant
  • 66kV circuit breaker and disconnectors
  • 66kV voltage transformers (VTs) and current transformers (CTs)
  • 66kV cable sealing ends
  • 66kV protection panels including generation constraint scheme
  • 33kV switchgear and associated protection equipment
  • 33kV 50kVA auxiliary/earthing transformer and neutral earthing resistor (NER).
  • Cable laying of 33kV, fibre optic and earth cables
  • Earthing and lightning protection systems at the substation building and nine wind turbines
  • 11kV pole-mounted transformer backup LV supply for the substation
Fraisthorpe Wind Farm Project

The results:

  • Fraisthorpe wind energy project was officially opened in August 2016 

Economic benefits:

  • The Fraisthorpe wind farm community benefit fund is being made available by Octopus Solutions, the owners of the Fraisthorpe wind farm, to support projects that improve the local quality of life and community resources for residents who live in the parish council areas of Barmston, Fraisthorpe, and Carnaby as well as part of the area served by Bridlington town council that sits south of the Spa. Grants are available of between £500 and £10,000

Priority will be given to projects that:

  • Enhance quality of life for local residents
  • Contribute to vibrant, healthy, successful and sustainable communities
  • Promote community spirit and encourage community activity
  • The Fraisthorpe wind farm project delivery went extremely well and provided a great boost for the local area.
  • The wind farm is anticipated to generate electricity for 25 years and will support a community benefit fund

Environmental benefits:

  • The wind farm provides enough electricity to power over 22,500 homes and stops over 48,000 tonnes (53,000 tons) of carbon dioxide gas from entering the environment.

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Powersystems UK Delivering Greener Power Solutions

15382 Clocaenog Wind Farm

15382 Clocaenog Wind Farm

Clocaenog Forest Wind Farm Project

Case study 15382

Name of Client and Location: Innogy Renewables UK (Innogy)
Project Value: £120m
Duration of the Project: 18-24 Months and currently under construction. Electrical works June 2018 – September 2019
Services: Wind Farm Electrical Infrastructure, Balance of Plant (eBoP)
Market Sector: Renewable Energy
Powersystems Fact: Powersystems your high voltage specialist partners – Powersystems Renewable Energy team have connected 27% of all U.K. land based wind farm generation

Scope of work & major design considerations:

Clocaenog wind farm is located in Claocaenog Forest, South West of Denbigh and to the east of Brenig reservoir North Wales. The wind farm consists of twenty seven 3.6 MW Vestas Wind Turbines, each with a tip height of 145m. The 27 turbines will be erected within the working forest and managed by Natural Resources. This site was specifically designated by the Welsh Assembly Government as suitable for a large scale development of renewable energy.

Clocaenog wind farm will have an installed capacity of up to 96 megawatts. This is enough renewable energy for the equivalent domestic needs of up to 63,800 average UK households per year.

The Balance of Plant (eBoP) and electrical works are being undertaken by Powersystems UK Ltd. This is on behalf of Jones Bros Civil Engineering and on behalf of the wind farm developer Innogy Renewables.
Clocaenog Forest Wind Farm is a potential £120 million renewable energy project. And this construction could present significant opportunities for the local supply chain.

Clocaenog Wind Farm

The Clocaenog wind farm development:

Powersystems have been appointed to design, supply installation, testing and commission a 132kV grid connection. Consisting of the below elements;

  • 2 x 70MVA 132kV/33kV Grid Transformers and associated Circuit Breakers
  • Disconnectors / Earth Switches 132kV busbar network
  • Cabling to connect to 27 x 3.6MW Vestas Wind Turbines, located within the Clocaenog Forest
  • Within the Control Building duplicate 33kV Switchboards with circuits to feed six wind farm arrays
  • Bus-coupler arrangement to give running flexibility should one Grid Transformer be out of service
  • Plus the necessary Control and Protection Panels for the complete 132kV / 33kV systems, incorporating state of the art Point on Wave relays for the two 132kV Circuit Breakers
  • Compound and sub-station earth system installation and testing, including the adjacent SPEN Bryn Bach 132kV compound earthing
  • All necessary building fit-out works comprising Lighting and small power with intruder and fire alarm systems
  • Within the Clocaenog Forest itself, the installation of 33kV Power and Fibre Optic and Earth cabling works to all 27 x 3.6MW Wind Turbines
  • All wind farm cabling to connect into the Control Building

 Project Facts and Figures:

  • Number of turbines: 27
  • Wind turbine capacity: 3.6MW
  • Totalled Installed capacity: 96MW
  • Connection Voltage: 132kV
  • Size of site: 1,600ha
  • Energy for 63,800 households
  • Length of onsite 33kV cabling: 181.50km
The Clocaenog wind farm development

Clocaenog Wind Farm Project Timings:

Construction of Clocaenog Forest wind farm began in late March 2018 with mobilisation on site which involved preparing the ground for construction activity. Turbine component deliveries commenced in Jan 2019. Electrical work is planned to continue until September 2019.

 

Specification of equipment:

  • UK Grid Solutions Ltd – 2 x 145kV Dead Tank CB’s for POW switching
  • UK Grid Solutions Ltd – 4 x 145kV Double Break Disconnectors
  • Kelvin Power Structures – Complete set of 132kV Structures
  • Schneider Electric Ltd – 2 x 33kV WS Switchboards
  • Schneider Electric Ltd – 2 x 200kVA Auxiliary Earthing Transformers
  • Batt Cables plc – Wind Farm 33kV Cables
  • Premier Cables – Fibre Optic Cables
  • Arteche – 3 x 145kV Combined CT/VT
  • GE Grid Solutions – MiCOM P643 and MiCOM P14N relays for Grid Transformer Protection
  • Schneider Electric – P849 Relays for HV Scada Interface Panel
  • Visimax – SynchroTeq Plus Point on Wave Controllers
  • Cleveland Cables – 70mm2 earth cable for Wind Farm and Turbine Base Earthing
  • Centriforce – Tape Tile for Wind Farm Cabling
  • Earthmet – Cadweld+ equipment for Sub-Station / Compound and Wind Farm Earth connections. Also earth tape for compound / building
  • Cable Jointing Solutions – 33kV Cable joints
  • PE Systems Ltd – 2 x 110V Battery Charger Systems
  • R & M Electrical Group Ltd – Compound Lighting fittings and columns
  • GPS – LVAC Changeover Panel

How Powersystems have helped:

  • Electrical design
  • Switchgear supply, installation and commissioning
  • Transformer supply, installation and commissioning
  • Cables supply and installation
  • 132KV Busbar System and support structures design and install
  • Cable jointing
  • HV testing
  • SAP provision
  • Panel fabrication
  • Generator supply

The results

The work is still work in progress.  Powersystems are in the commissioning stage of 132kV compound. Turbines are still being delivered / erected.  Approx. 90% of the wind farm cabling is installed in trenches.

Environmental Benefits

Clocaenog wind farm will generate enough clean/green energy for the equivalent domestic needs of up to 63,800 average UK households . The project will play a significant role towards helping Wales to meet its renewable energy targets.

Economic Benefits

Announced in March 2021 RWE’s Clocaenog Forest onshore wind farm in North Wales has officially launched its £19million community fund and announced the first successful applicants from the surrounding communities.

 

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13983 Aikengall II Wind Farm

13983 Aikengall II Wind Farm

Aikengall II Wind Farm

Case study 13983

Name of Client and Location: Community Windpower Limited. The project was for Aikengall II Wind Farm in Dunbar, Scotland. Community Windpower are located in Frodsham, Cheshire.
Project Value: £1.0m+
Duration of the Project: 18 months
Services: Electrical balance of plant for a wind farm
Market Sector: Renewable Energy
Powersystems Fact: Powersystems your high voltage specialist partners – Powersystems Renewable Energy team have connected 24% of all U.K. land based wind farm generation

Aikengall II Wind Farm, is located in East Lothian, 6 km south of Innerwick and 11 km southeast of Dunbar. The wind farm forms an extension of Community Windpower’s operational Aikengall Community Wind Farm. Aikengall II Community Wind Farm comprises of 19 Siemens Direct Drive wind turbines. These wind turbines have a tip height of 145 metres and a generating capacity of 3.2 MW.

 

Project Facts and Figures:

  • Number of turbines: 59
  • Wind turbine capacity: 3.2 MW
  • Totalled Installed capacity: 177MW
  • Connection Voltage: 132kV
  • Size of site: 3km²
  • Energy for 40,000 households
  • Length of onsite access tracks: 10 km
  • Length of onsite 33kV cabling: 55km
Aikengall II Wind Farm
Aikengall II Wind Farm

Aikengal II wind farm development

Powersystems designed, supplied, installed, tested and commissioned a 132kV outdoor open-terminal substation for a new 60.8MW wind farm including;

  • A 90 MVA 132/33kV grid transformer and associated 132kV circuit breaker, disconnectors, VTs, protection panels and substation SCADA system
  • Also inclusive of a 6-panel 33kV indoor switchboard, and the associated wind farm 33kV cabling to 19 wind turbines

The works included design and layout of the 132kV primary plant, this was to allow for a future expansion to the substation of up to 140MW. Design, installation and commissioning of the interface protection with Scottish Power Transmission and the provision of operational metering and control signals for Grid Code compliance.

Powersystems also undertook the electrical compliance studies. And preparation of the UDFS in order to achieve Grid Code compliance as well as  assisted with on-site Grid Code compliance testing.

Powersystems designed, installed and commissioned, one of the first point-on-wave circuit breaker controllers to be used in the UK. This was for controlled energisation of a 132kV grid transformer. This ensures voltage dips were kept within National Grid limits when energising the transformer.

Wind farm project timings:

Aikengall II Community Wind Farm was given planning consent by the Scottish Government on Friday 1 March 2013. The wind farm has an installed capacity of 60.8 MW to generate clean, green electricity. Aikengall II Community Wind Farm became operational in November 2017.

What the client wanted:

Community Windpower is at the forefront of wind energy development in the UK, with over 800MW built, under construction and in development. As renewable energy specialists, they are fully experienced in the identification, design, development, construction and operation of onshore wind energy projects.

Community Windpower wanted a 140MW connection to Scottish Power Transmission’s 132kV network in Dunbar. This was required for the new 60.8 MW wind farm Aikengall II. This also required sufficient capacity for a future expansion to the wind farm, known as Aikengall IIA.

The Aikengall II wind farm consisted of 19 3.2MW Siemens direct-drive wind turbines. These were located on one of the windiest and consequently most productive sites in the UK, the Lammermuir Hills.

The client required a 33kV cable layout. This was in order to minimise electrical losses between the turbines, as well as allowing for future cables to Aikengall IIA wind farm, to be installed along the same wind farm tracks.

The 132kV substation, being a direct connection to National Grid, and having a registered capacity of 140MW needed to be Grid Code compliant.

Community Windpower wanted Powersystems to provide the full suite of electrical compliance studies. This was to demonstrate Grid Code compliance. And design the electrical infrastructure in order to ensure satisfaction of National Grid and Scottish Power’s interface requirements.

Aikengall II

How Powersystems helped:

Powersystems lead the high-level design of the electrical infrastructure right from the start of the project. Determining that it was more cost effective to have the Aikengall II and Aikengall IIA wind farms supplied from a single substation. Rather than having two separate substations located closer to the centre of each wind farm.

However, we designed the 132kV substation layout and 33kV cable system in such a way, that the future equipment for Aikengall IIA wind farm can be installed with minimum interruption to the Aikengall II wind farm. In addition, this ensures that Aikengall II, will continue to generate throughout the construction period for Aikengall IIA.

Our simulation studies of the grid transformer energisation, indicated that it would fail to stay within the voltage dip limits set by National Grid. We therefore proposed a point-on-wave controller and a 132kV circuit breaker, along with segregated-phase switching. This was to limit the transformer inrush current and corresponding voltage dip during energisation.

Watch a short film on the Aikengall II Wind Farm

The results:

The completed Aikengall II wind farm become operational in November 2017. The site being set on a very windy location has a high utilisation factor.

Environmental Benefits

Aikengall II Wind Farm will generate enough electricity to power approximately 40,000 homes and will displace around 68,700 tonnes of Carbon Dioxide per annum.

Economic Benefits

Aikengall II Wind Farm will provide annual community benefit funding, equivalent to £5,000 per MW of installed capacity for the planning permission of the wind farm. Based on an installed capacity of 60.8 MW, this equates to £304,000 per annum. This totals around £7.6 million during the 25-year operational period, for the local host communities.

In conclusion, the wind farm is a sound demonstration that onshore wind is the cheapest form of new-build electricity generation available in the UK today.

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