Our Services

Power Systems Design

We have one of the largest and most experienced systems studies teams in the world, with more than 30 specialist power systems engineers.

Mustafa Kayikci

Director of Connections

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Power System Designs

TNEI can provide you with power system analysis consultancy services. Covering everything from transmission and distribution network analysis to Power quality and harmonics and Failure investigations.

The team provides power system analysis consultancy services in the areas of:

  • Transmission and distribution network analysis
  • Wind farm design, assessment and connection
  • Distributed generation and active networks (smart grids)
  • Petrochemical industry
  • Industrial systems
  • Thermal and renewable generation plant modelling
  • Power quality and harmonics
  • Grid code compliance
  • HVDC, SVC, STATCOMS, (FACTS)
  • Failure investigations
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TNEI has been involved in the development of transmission master plans for future generation and demand scenarios on projects such as grid studies, north-south interconnector feasibility, the revision of GB SQSS for three UK transmission network owners, and the north-west grid reinforcement for the economically efficient connection of large scale wind generation.

The combination of expert software, IPSA, and power system analysis teams provides TNEI with a unique capability to provide clients with bespoke analysis solutions, the provision of academic level analysis on a commercial consultancy basis, as well as rapid timescales.

To find out more about our services please email us to be put in touch with one of our experts.

Power Systems Design Services

Power System Studies

TNEI boasts a wealth of expertise and experience in power system studies

Earthing and lightning protection services

Specialised and general earthing and lightning protection services

Specialist Energy Advice

We are a specialist, independent company. That’s why we can offer a flexible, personal service and help our clients quickly.
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Power System Studies

The Power Systems team at TNEI boasts a wealth of expertise and experience in power system studies. TNEI has extensive experience in undertaking design and compliance studies for a wide range of generators including hydroelectric developments, solar power plants, solar parks, Energy from Waste (EfW) generators, conventional generators and industrial networks such as docks, steel works and data centres as well as battery storage systems. Moreover, TNEI has a team of 40 world-class power systems engineers, including industry-recognised experts in their fields, which enables us to expedite the delivery of projects.

TNEI offers the following power system services:

  • Concept and FEED studies
  • Technical due diligence
  • Technical advisory / Owner’s Engineer
  • Lifecycle cost modelling
  • Failure investigation
  • Bespoke tool/script development
  • Load flow, voltage regulation, and reactive power capability
  • Short-circuit fault levels
  • Cable sizing and power losses
  • Voltage fluctuation and flicker (ER P28) and voltage unbalance (ER P29)
  • Harmonic assessments and filter design
  • Dynamic RMS model development
  • G99 / Grid Code compliance
    • Fault ride through and fast fault current injection
    • Voltage control and reactive power stability
    • Frequency response (LFSM-O, LFSM-U, FSM)
  • Electromagnetic transient analysis
    • Insulation co-ordination
    • Switching
    • Lightning
    • Cable and transformer energisation
    • Fault analysis
    • Zero-miss phenomena
    • Ferroresonance
    • TRV and RRRV
    • Circuit breaker current capability
    • Out-of-phase synchronisation
  • Protection settings and co-ordination
  • Arc flashLoad flow, voltage regulation and power losses assessment
  • Short-circuit calculations
  • Voltage fluctuation and flicker (ER P28, IEC 61000-3-7) and transformer inrush
  • Voltage unbalance (ER P29) assessment including traction networks
  • Harmonic assessments and detailed filter design (ER G5/5, IEC 61000-3-6)
  • Dynamic RMS model development and validation for OEMs
  • G99/Distribution/Grid Code compliance
    • Reactive power capability
    • Fault ride through and fast fault current injection
    • Voltage control and reactive power stability
    • Frequency response (load rejection, LFSM-O, LFSM-U, FSM)
    • Model verification and validation
  • Protection settings and co-ordination
  • Arc flash
  • Lightning protection
  • Electromagnetic transient analysis
    • Insulation co-ordination and surge arrestor sizing
    • Switching and lightning transients
    • Energisation transients
    • Zero-miss phenomena
    • Ferroresonance
    • TRV and RRRV assessment
    • Circuit breaker current interruption capability
    • Out-of-phase synchronisation
    • Fault analysis
  • Concept and FEED studies
  • Technical due diligence, advisory / Owner’s Engineer, ITE services.
  • Lifecycle cost modelling
  • Failure investigation
  • Bespoke tool/script development
  • Connection cost calculation
  • Connection applications
  • Risk assessment and mitigation plans
  • Offer reviews
  • Network charging
  • CION reviews
  • On-going developer support

Earthing and lightning protection services

Thanks to our team’s extensive international experience across various industries, TNEI can provide specialised and general earthing and lightning protection services for projects from initial conception through to project delivery. All of our services comply with the relevant statutory regulations and requirements and can be adapted to both new build and existing infrastructure. Our services are sustainability driven, with the objective to provide optimised solutions, balancing between satisfying engineering design objectives and implementation costs. As each site is different, we offer tailored service packages to assist our clients in efficiently delivering their projects. In collaboration with our wider team of specialist power systems consultants, TNEI can provide coordinated and comprehensive electrical engineering solutions to meet the requirements of your particular project. Our range of earthing and lightning protection services includes (but is not limited to):

Our range of earthing and lightning protection services includes (but is not limited to):

  • Earthing system designs
  • Earthing system design verification studies
  • Detailed fault current distribution calculations
  • Rise of earth potential assessments
  • Impressed voltage studies
  • Third-party transfer voltage studies
  • Soil resistivity measurements
  • Electrode resistance measurements
  • Touch and step voltage measurements
  • Earthing continuity surveys
  • Lightning shielding system designs
  • Lightning shielding system design verification studies
  • Lightning protection risk assessments
  • Due diligence reviews
  • Failure analysis and remedial works design

Get in touch to find out how we can assist or advise on your project.

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