To integrate an increasing amount of distributed electricity generation from renewable sources, electrification of transport and more efficient power and energy use, we must digitalise and modernise the electricity distribution grid. A transition to the future Smart Grid is necessary.
In the Centre for Intelligent Electricity Distribution (CINELDI), our main objective is to provide knowledge and guidelines enabling a cost-efficient realization of the future flexible, intelligent, and robust electricity distribution grid, i.e., the Smart Grid.
What may the Smart Grid look like? What are the driving forces influencing the development of the Norwegian grid? And what might we need to do in order to push the development in a preferable direction?
To better understand the complexity of the future Norwegian distribution grid we have identified driving forces for system innovation in the distribution grid (smart grid driving forces). Based on this, we are developing a set of credible scenarios for the electricity distribution system in Norway.
- This blog presents the results from the first part of this work, and is based on the paper “Driving forces for intelligent distribution system innovation – results from a foresight process“
Foresight: thinking, debating and shaping the future
We use a foresight process as methodology in the work. The process involves the various stakeholders; technology providers, grid operators (DSOs/TSO), research institutes, university, authorities and market operators in Norway, representing a multidisciplinary group of experts. The figure below shows the main steps of the process, and the implementation of the steps in CINELDI.
Smart Grid driving forces
The structure of the identified driving forces is shown in Figure 2. The driving forces were sorted into three levels: megatrends, external driving forces and grid related driving forces. The blue boxes in the figure represent groups of driving forces. They are closely interconnected, as indicated by the arrows on top of figure 2, and as illustrated in the example below.
Example: Prosumers as a driving force for grid development
A prosumer is an end user that both uses and produces energy, for example from PV (solar panels) generation on the roof top and is thus a source of distributed generation. This sorts under the driving force group Generation.
The underlying megatrend is Climate change. Climate change influences on the Politics and Regulation and standardisation, to promote more production from renewable sources. Climate change also influences on the Societal trends and values as environmental awareness is more widespread, and people want to contribute.
Another driving force caused by climate change is Technology development, in this example through development of PV panels, where the manufacturing costs have been dramatically reduced. This opens for new Business models and stakeholders, e.g. for investing in PV panels for private households. All these driving forces affect the increased amount of distributed generation in the grid.
Increased distributed generation opens possibilities for utilisation of Flexibility and Microgrids. It also calls for new planning methods for Grid development and new aspects to be included in Grid operation. The distributed generation influences on Security of supply, e.g. in terms of possibilities for islanding during faults and interruptions, and regarding voltage quality issues related to e.g. voltage increase.
Increased distributed generation also influences Economy, as this will decrease the need for electricity from the grid, and Safety challenges regarding controlling all small-scale generation during faults and interruptions. All these internal driving forces and challenges again influence the Technology development and the need for changes in Regulation and standardisation, as well as External threats through possible new channels for hackers to get into the control system.
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The example illustrates how the smart grid driving forces are interconnected, and that there is a variety of factors within different domains influencing on each other. This emphasizes the need for system innovation in the distribution grid (in addition to innovation in products, methods, services etc.) for the grid operations to improve and to handle the upcoming challenges in a robust way.
How do the driving forces affect the development of the grid?
Based on the Smart Grid driving forces, we developed a repository of more than 100 mini scenarios. A mini scenario is a probable event, development or action of significance for the future distribution grid. How the driving forces affect the distribution grid depends on the development of the driving forces, and we have used mini scenarios to illustrate possible directions of the development and to show possible impacts on the grid performance (security of supply, economy, cyber security and safety).
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Mini scenario 1: “From peak power to stable loads”
Electrification of transport (EVs, ferries etc.) causes power challenges to the grid due to simultaneous fast charging. The ferry companies make large investments in onshore battery packages. This results in stable load from the grid side, and possibilities for the ferry companies to provide flexibility / grid support in high load periods and fault situations.
In this mini scenario, batteries are used to increase the security of supply. Utilising batteries to avoid the peak loads and to provide grid support will reduce both the CAPEX (reinforcement of the grid can be deferred) and OPEX (reduced costs of electrical losses and interruption costs). It may however be challenging to know if the grid is energized or not when batteries can feed the grid. This must be solved to ensure personnel safety.
Mini scenario 2: “More offline microgrids”
Many neighbourhoods are organised as microgrids. With distributed generation, the power and energy demand in the connection point is reduced. Several microgrids choose to go off-line, and the number of customers connected to the distribution grid is decreasing.
In this mini scenario the end-users may experience decreasing security of supply due to off-grid solutions. The revenue for the grid company is uncertain. Local solutions may be positive for the cybersecurity, but more automation may increase the cybersecurity risks. Safety issues must be handled by the local community itself.
- Read more about the development of mini scenarios here: FME CINELDI – Workshop Smart grid scenarios
Some impacts are quite clearly negative or positive, whereas others are more uncertain. The research in CINELDI aims to provide new knowledge to reduce some of these uncertainties.Scenarios and road map for the future
The driving forces and mini scenarios form the basis for establishing main scenarios / alternative futures for the distribution grid of 2040, currently under development in CINELDI.
Based on the scenarios and the research in CINELDI, a road map and transition strategy for Smart Grid development in Norway will be developed in joint effort among the stakeholders.
- You may also find this interesting: Microgrids: What are they, virtual impedance and a control concept for inverters in islanded microgrids
By participating in the foresight process, the stakeholders have built new knowledge and gained insight into possible future scenarios. Some of the DSOs (Distribution System Operators) have already taken results from this foresight process in use in their strategic processes (grid development, competence building, R&D strategy etc.). Better knowledge and insight into driving forces and possible future scenarios will improve the decision-making processes and support the system innovation in the Smart Grid transition.