Grid Studies:

Simulation and Optimization Ensure Cost-Effective Transformation of the Power System

When integrating renewable energies into electrical power systems, numerous questions arise:

How much capacity can be integrated without compromising system security? Which technologies are the best fit? Which location is ideal for the installation and connection of specific units into the grid? How much grid extension is necessary? What measures are available to reduce grid extension needs? How can static and dynamic system stability be guaranteed? Is the amount of reserve power sufficient?

Our strength: extensive knowledge of various systems

In numerous projects, Energynautics has given sound answers to these questions. We use advanced calculation tools to perform sophisticated network and market simulations. The systems that Energynautics has analyzed so far range from small island systems (Seychelles, Barbados) to interconnected national grids (e.g., Costa Rica, Germany) up to continental systems like the UCTE network. In all these different cases, we were able to provide custom-fit solutions.

Our experience and our optimization tool – your solution and your benefit

In our analyses, our advanced optimization tool ENAplan delivers simultaneous optimization of power plant dispatch, grid extension and storage application. Furthermore, we use DIgSILENT PowerFactory for the calculation of load flows and for dynamic stability analyses. We have long-standing experience in detailed fault analyses with respect to frequency, voltage and rotor angle stability. Our profound understanding of the technical context enables us to make precise suggestions for upgrading particular units, adjusting the grid codes, or adapting the protection settings. This is our contribution to help you maintain safe and stable network operation.

Use our knowledge to optimize your reserves

Sufficient power reserve is crucial for secure network operation. Fluctuations of wind and solar power generation need to be taken into account when dimensioning the power reserve. Energynautics has developed an innovative method to determine the optimum secondary reserve that does just that! We have thought of everything: an optimized secondary reserve gives you service security and cost-efficiency at once.

Together, we will find the answers to your questions!

We have already analyzed many diverse power systems in transition. Thus, we are not only familiar with the wide range of problems that may arise but also with the best ways to approach them. We are going to find a custom-fit solution for you as well!

In brief
  • Energynautics is familiar with the wide variety of challenges that come with the integration of renewable energies: from network optimization to dynamic stability analyses and grid codes to the dimensioning of the power reserve.
  • In numerous projects Energynautics has developed solutions for various different system types (from small islands to transnational grids).

This may be of Interest for you:

A Selection of our References.

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Connection Point Assessment for New HVDC Connector

Energynautics conducted an analysis to assess the technical viability of a new subsea HVDC connection between Spain and Italy.

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Load and Generation Projection for a German Utility

Energynautics compiled geographically detailed load and generation projections for the distribution grid of EWR Netz GmbH with a focus on the future growth of distributed generation and end-use electrification up to 2040.

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Low-cost, grid friendly charging for Bangladesh

A smart charger for three-wheeler charging stations in Bangladesh was developed to mitigate the grid load during peak hours.

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EV Integration Handbook

Energynautics together with RE-xpertise developed a handbook on best practices for the integration of electric vehicles into the distribution grid.

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Power System Planning for IRRP Development in CARICOM States

On behalf of GIZ, Energynautics supported the Caribbean Centre for Renewable Energy and Energy Efficiency (CCREEE) with generation and grid expansion planning in Guyana and Trinidad and Tobago.

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NGESO Reactive Power Market Design

Development of a market-based solution for reactive power management in the GB transmission system, ensuring cost efficient provision to maintain system voltage security in a zero-carbon system.

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Development of generator models to prove grid code compliance

Power generating units require verification of certain capabilities in order to be connected to the electricity grid. This is (partly) done with precise simulation models. Energynautics develops these kind of simulation models for all kind of technologies.

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Optimal asset sizing for Markbygden Wind Farm

Energynautics developed the steady-state model of the third phase of Europe’s largest onshore wind farm and performed a series of techno-economic studies.

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Optimizing the Grid Operation by Using the FNN Control Box

The objective of the project is to develop a control box, the Smecon-Box, which combines local intelligence and central controllability for electric vehicles, photovoltaic systems, heat pumps and Co in order optimize the grid operation.

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Consultancy Services for the North Sea Wind Power Hub Programme

This study investigates the potential of offshore wind energy hubs in the North Sea in contrast to radially connected wind farms with the aim of optimizing the integration of offshore wind.

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Smart inverters for distributed generation

Recommendations to incorporate smart inverters for increasing the PV hosting capacity in distribution grids and grid reliability.

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Ancillary Service Review for the Mexican Power System

Energynautics engineers supported one commissioner’s office of the Mexican regulator in their ongoing review of ancillary services needed for further increases in renewable energy contribution.

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Risk Management Guidelines for Solar PV Projects in Vietnam

The objective of this assignment was to develop handbooks on risk management – technical guidelines for ground-mounted and floating solar PV projects from the development to the dismantlement phase.

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Revision of Grid Codes for the Dominican Power System

Commissioned by GIZ, Energynautics conducted a revision of the transmission grid codes in the Dominican Republic to ensure their suitability for large scale VRE integration.

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Research study on sustainable energy transition and energy infrastructure development opportunities

The aim of the study was to provide input for the implementation of Resolution No 55 “Vietnam’s National Energy Development Strategy to 2030, vision to 2045” of Vietnamese Party’s Politburo and further orientations for sustainable energy transition in Vietnam.

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Role of Distribution Companies in using Grid Support Services from Solar Rooftop PV systems and Storage

Energynautics was commissioned by GIZ to analyse the services which can be provided by solar rooftop PV and battery storage to support the distribution grid in India.

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Distribution grid study in the Dominican Republic

Energynautics analyzed the maximum PV penetration levels in Dominican distribution grids.

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EU Network Codes for Estonia

Energynautics conducted a study on various aspects of grid codes, gathering international experience and accepted good practices for Estonian consortium.

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ETS Plus Emission Trading: Power market simulations for IFW

Energynautics was subcontracted by the IFW Kiel Institute for the World Economy within a larger project to evaluate the impact of rising emission prices on the power sector.

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Review of the Mongolian Grid Code

Energynautics was commissioned by the World Bank in 2018 to assist the Mongolian system operator to update their grid code.

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Transmission Grid Study Czech Republic

Energynautics was commissioned by a consortium of NGOs to conduct a high level transmission system study to investigate the impact of a large scale coal exit in the Czech Republic by 2030.

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REEP 1000 Islands: RE Integration in Indonesia

Commissioned by GIZ, Energynautics, Cadmus and ABO Wind provide technical support to Indonesian power system stakeholders until 2020. The project includes multiple island grid studies, development of tender documents, capacity building workshops and a revision of the distribution code.

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Vietnam Technology Assessment

Back in 2012, Vietnam published a smart grid roadmap which includes different phases for defining the smart grid implementation in Vietnam. In order to support the development of smart grids, Energynautics assessed the current smart grid progress and developed recommendations.

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PV Port & Store

India aims to install 40 GW solar PV capacity on rooftops by 2022. To support this target, Energynautics developed a standardized plug-and-play PV plus battery system which ensures uninterrupted power supply, maximization of self-consumption and peak shaving of high load peaks in the evening.

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Regional Capacity Development in ASEAN

In order to support the renewable energy development in the ASEAN region, Energynautics held three capacity building workshops to participants from utility networks, governments and other stakeholders in the public and private sector.

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Rooftop PV policy in Vietnam

To support the Electricity Regulatory Authority of Vietnam, Energynautics developed technical requirements for rooftop solar PV installations in Vietnam, taking existing regulations, international best practices, and local development targets into account.

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Power Quality Measurement Campaign at Al Zaatari PV Power Plant

A 12,9 MWp PV power plant was built to ensure the electricity supply for the Al Zaatari refugee camp in Jordan. In order to determine the influence of the PV plant on power quality, Energynautics conducted a power quality measurement campaign at several points in the local grid.

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Smooth PV

Smart Modelling of Optimal Integration of High Penetration of PV (Smooth PV) is a project which has the objective to develop advanced modeling and simulation tools using the software tool DIgSILENT/PowerFactory in order to evaluate the impact of a large-scale penetration of PV on the optimum economical design/operation of the distribution and transmission network.

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REEP 1000 Islands

GIZ has commissioned Energynautics to conduct pilot studies for renewable integration on two Indonesian islands. The Indonesian government has set a national target of 23% electricity from renewable sources by 2025. Hybrid systems on the more than 17,000 small Indonesian islands can contribute significantly to reaching this goal.

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3DMicroGrid

Microgrids are a promising solution to facilitate the integration of renewable energies. 3DMicroGrid includes the design, development and demonstration (3D) of a future-proof active smart microgrid system to integrate and optimize multiple energy sources and loads.

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DESIGNETZ

New innovative approaches are needed for a cost-efficient integration of renewables into the distribution grid. Energynautics analyses their effectiveness and refines their use for the BDEW traffic light concept.

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How-to guide for variable renewable energy integration

How can variable renewable energy be integrated in the Philippine power system? Energynautics shows how with a step-by-step guide developed for the World Bank and the Philippine system operator!

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Innovative Grid Toolbox

Grid expansion is an essential flexibility option for integrating ever-greater shares of variable renewable energy: We show which innovative “tools” there are in order to optimally use the transmission grid.

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European Grid Study 2030/2050

100% renewables by 2050? Commissioned by Greenpeace, the study investigated how the European grid has to be cost-optimized in order to realize the Energy [R]evolution Scenarios.

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VDMA Study on the
Stability of Gas Engines

In case of voltage dips in the grid, gas engines have to remain grid-connected. Using modelling and simulations, we demonstrate the effectivity of different Fault-Ride-Through solutions.

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Grid Absorption Study Seychelles

Renewable energy in small island systems brings economic benefits as well as technical challenges: We reveal how wind and solar can be optimally integrated into the Seychelles power system.

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Barbados Grid Code Review

Energy policy target for 2029: 29% renewables. With this in mind, Energynautics reviewed the Barbados Grid Code and developed new Planning and Operation Codes.

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Renewables Grid Integration Study Costa Rica

100% renewables today: Made possible by excellent wind, solar and hydro resources. We show how the power system should be organized for reliable operation.

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IRENA Grid Code Study

Which aspects have to be considered when developing grid codes for integrating high shares of renewables while maintaining a reliable and stable power supply? We provide answers!

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Snoopi – Smart Network Control with PV Infeed

PV battery systems can do more than just optimize self-consumption: Our controller stabilizes the voltage and thus paves the way for a higher PV penetration.

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Cell Controller Project

Development and test of a universal high-end Smart-Grid-Controller. The highlight: Pure autonomous island operation of the distribution system based solely on distributed energy resources.

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Distribution System Study Rhineland-Palatinate

100% renewables by 2030, that’s what the state government is aiming for. We show what this aim will mean for the distribution system of RLP and how smart grids can contribute.

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