Electrical Engineering for Renewable Projects
Our client will typically consider purchasing a project developed to a stage at which the relevant authority has granted a license for development, and construction is allowed to proceed (type of project (solar/wind), site and MW installed being defined). In such case, any number of elements may – to some extent – be in place. We scrutinize, identify, delimit, quantify and assess costs and risks to prevent that anything is erroneous, incomplete or missing.
- supporting funders’ and other investors’ due diligence processes, funding and 3rd party engineering reviews efficiently
- storing and maintaining all relevant documentation in an organized, accessible and retrievable manner with expertise currently assigned and prepared to answer any questions at any time.
It is important for us to always thoroughly identify and familiarize ourselves with any legal requirements, regulations and project specifics to the extent needed to outline our design work, drafting of contract specifications and construction stage monitoring activities, and the operational stage.
These are e.g.
- health & safety codes
- electrical safety at work
- high and low voltage regulations
- building and construction codes
- environmental regulations
- hazardous substances
- noise, electromagnetic fields
- grid code
- other regulations applicable to energy generating assets.
We contribute to environmental impact assessment with technical input to environmental specialists. These include:
- visual impact outline drawings
- noise budgets
- electromagnetic field assessments
- statements on working methods.
We support processes with landowners as to the technical insight needed for negotiating and drafting concise technical inputs on plant limitations and working methods and constraints.
The client developer will normally require the plant to be designed under contractors’ design responsibility, however designs are very often needed before contractors are allocated to the project, for purposes such as acquisition of land, applying for grid connection, securing of rights of way, environmental impact assessments, CAPEX/OPEX budgets.
- We offer a detailed analysis of the wind/solar resource, optimizing MWh yield considering makes and types of turbines/solar panels, siting, trackers, etc., with specialized software and expertise within both wind and solar energy
- A compliant and robust design, optimized for capital costs, losses and outages within the constraints applying to the project (grid code, connection agreement, siting, rights of way, crossings)
- We justify redundancy in transformers, lines and/or cables, identify and size ancillary elements such as statcoms, reactors and harmonic filters.
Modelling of electrical systems
- Simulation and modelling of electrical systems in steady state and transients regimes
- Application with special focus and experience, which includes:
- electromechanical (motors/generators)
- electrothermal (heaters/heat pumps)
- electrochemical (batteries/photovoltaic)
- electronic devices (inverters/converters)
- electric machines (transformers)
We can, in detail, undertake systems of any size, including passive and active interface components, and incorporate PID-control logic or feedback system. The modelling of such systems is often focused on creating a higher degree of certainty about production output in the development phase of an potential asset.
Power system simulation and modelling
- Simulation and modelling of load flow, short circuit and dynamic studies relating to the development and grid connection of renewable energy projects
- Development of plant specific models from PSS/E, DigSilent, PSCad library models and vendors’ models of generating plant as required by grid authorities as a part of the connection and compliance processes, testing, validation, documentation, and reporting.
- Interaction with grid authorities’ specialists
- Outline design and dimensioning of generating plant, component sizing, design of reactive power compensation, fault-ride through, and dynamic response capability studies
Grid connection application
- Review of grid, load and generation data whenever available in the public domain. If available, as is the case in e.g. the US, we assign specialist consultants with detailed system and market models so as to define connection points of sufficient capacity and robustness and quantified curtailment risk
- Translation and approximation of the grid application so that it suits the requirements of the grid authority. (Normally, grid connection worn applications need to be submitted in very strict formats, not necessarily reflecting the nature of the development and forms are often tailored to conventional, large generator plants).
- If required, acquisition of manufacturer’s computer simulation models of turbines and inverters from the manufacturers to ensure that they are sufficiently correct and comprehensive before handing them over to the grid authority, minimizing discussions and processing time at the relevant authority.