Transmission and Distribution

Transmission and Distribution

Networks

Our network staff provide high quality, timely and cost-effective engineering services to our clients and can work on power transmission, distribution, network automation and control projects, as well as a complete range of power system studies.

Systems, electrical and communication

Thorndon Cook Power’s systems and electrical staff can assist with low-voltage reticulation, instrumentation design and selection, process and instrumentation diagrams, control systems, earthing and lightning protection, fire detection and alarms, safety audits and energy management.

Our team has been involved in the following key projects:

• Akiira Due Diligence

  Akiira Due Diligence

  Thorndon Cook was engaged by the financiers for the proposed 2x 35MW Akiira geothermal project in Kenya to undertake a technical due diligence of the proposed project and to highlight any significant risk areas and how such risks could be mitigated.  In particular, Thorndon cook reviewed: The Akiira geothermal resource to ensure that it was likely to be of adequate size and quality for the development proposed The Akiira drilling plans and schedule for reasonableness. The project schedule to ensure all major activities were shown, and that timing and durations of these activities were reasonable.  The project concept design to ensure that it was technically feasible, and technology chosen well proven commercially.  The project capital cost estimates for completeness and reasonableness. Preparation of a report showing all likely project risks and how these could be mitigated.

• N2N Geothermal Power Plant Relocation

  N2N Geothermal Power Plant Relocation

  Members of Thorndon Cook Power were engaged by First Gen/EDC as owner's engineer to provide all engineering support and project management for the dismantling, transportation and re-installation of a 50MW geothermal power plant on the Island of Negros. The work included preparing scope of works and EPC specifications, bid evaluation of proposal by Fuji, design review, site construction and installation management and supervision.

• Te Mihi Geothermal Power Station

  Te Mihi Geothermal Power Station

  Our team was significantly involved as part of Parsons Brinckerhoff which formed a Joint Venture (JV) with McConnell Dowell Constructors Limited and SNC-Lavalin Constructors Inc for the delivery of the EPC (Engineer, Procure, Construct) contract for the 2 x 83 MW Te Mihi power station. Our primary role, within the fully integrated JV, was to deliver the engineering and design for the project with ongoing technical support to the procurement and construction activities. Thorndon Cook staff members also took a lead role during plant commissioning and performance testing. Members of our team were responsible for all the detailed power plant design, including conceptual design, plant optimisation, BOP detailed engineering, performance guarantees, preparation of sub vendor packages, design drawings and documentation, site construction engineering support and commissioning support.

• Burgos Wind Farm

  Burgos Wind Farm

  A Thorndon Cook member was engaged by the Burgos Wind Farm Wind Power Corporation (“EBWPC”) on the electrical design review for the 115 /34.5 kV substation for the 150 MW wind energy project, that was built at Burgos, Ilocos Norte, Luzon, Philippines. The wind farm comprises 50 off 3 MW Vestas wind turbines located on a 650 ha coastal site. The 50 wind turbines are connected on a 34.5 kV radial system with 5 feeders connecting the turbines to the Burgos 115/34.5 kV substation at the wind farm site. A 42 kilometer single circuit 115kV transmission line connects to the National Grid Corporation of the Philippines (“NGCP”) Laoag substation for connection to the rest of the Luzon grid.

• Nam Theun 2 hydropower project (NT2)

  Nam Theun 2 hydropower project (NT2)

  A Thorndon Cook staff member was engaged by the Nam Theun 2 Power Company (NTPC) during the commissioning of the Nam Theun 2 hydropower project (NT2) in Lao PDR. Activities related to administration of the Power Purchase Agreement (PPA) with Electricity Generating Authority of Thailand (EGAT), for the sale of the power output from the power station from the 4 x 250 MW Francis units, delivered via a 306 km, double-circuit 500 kV transmission line to the Thai grid at Roi Et substation; and the PPA with Electricity du Laos (EdL) for the power output from the 2 x 40 MW Pelton units delivered via a 28 km, double-circuit 115 kV transmission line to the EdL Mahaxai Substation.

• Cahora Bassa Power Station Rehabilitation

  Cahora Bassa Power Station Rehabilitation

  The Cahora Bassa scheme consists of a 164 m-high double curvature arch dam, with eight sluice gates and a spillway with a maximum discharge capacity of 13,500 m3/s and the South powerhouse, which is an underground cavern housing five 415 MW Francis turbines and five associated 480 MVA generators. Thorndon Cook staff were engaged in supporting the client for the monitoring and inspection of the contractor’s site and works activities undertaken to complete the rehabilitation, modernization and provision of remote control of the the Cahora Bassa powerplant (known as ReabSul).