By Dr. Shambhu Sajith, Assistant Professor, Power Management / Renewable Energy, UPES ON
Optimizing Grid Integration is a must for making a successful transition from fossil fuels to renewable sources for accessing clean and sustainable forms of energy.
With the generation of renewable energy making leaps in the last couple of years, grid operations are undergoing massive transformations on energy generation, storage, and transmission fronts. Renewable energy can address our concerns about climate change and making the transition to cleaner forms of energy help us make Sustainable Living a reality going forward.
That said, the changeover to renewable sources is fraught with its set of challenges. Especially when it comes to optimizing grid integration, a whole lot of challenges need to be addressed before our current power system becomes fully compatible with renewable sources and clean energy. Here’s a detailed look into what these challenges are and how they also offer new avenues of opportunities for the stakeholders in the power ecosystem:
Optimising Grid Integration Challenges
a) Fluctuating Supply-Demand Dynamics: The intermittent nature of renewable energy sources makes it difficult for grids to balance the dynamics of supply and demand on a real-time basis. This inability could lead to large variations in the load, supply, storage, and transmission abilities among others.
The constant fluctuations can also force grids to make abrupt changes in their conservative limits, causing significant disruptions in their operations and service delivery.
b) Poor Forecasting Abilities: The limited capacity to forecast supplies from renewable sources makes it difficult for the grids to plan operations, manage risks, and optimize systems for handling sudden changes in supply-demand dynamics.
This, in turn, leaves grids vulnerable as the power sector continues to contend with constantly changing demand dynamics, supply constraints, regulatory changes, and consumer behaviour. In such a turbulent environment, the stability of the systems always remains in question if they don’t have any contingency plan in place.
c) Poor Real-time Capabilities: The absence of real-time renewables data makes it difficult to detect anomalies and run preventive mechanisms in advance to save grids from potential breakdowns. The only approach that is at the disposal of management is reactive which is not very conducive to maintaining a proper, streamlined, and uninterrupted flow of services to end consumers.
d) Weather Challenges: With the impacts of climate change becoming increasingly extreme, renewables are facing additional challenges in terms of their generation, storage, and transmission capabilities. From wildfires to hurricanes to significant fluctuations in temperature, extreme weather events are adversely impacting renewable and their capability to supply steady and streamlined power to grids.
This further worsens the limited capacity of grids to preempt contingencies and implement measures proactively to ensure smooth operations.
Optimising Grid Integration Opportunities
a) Use of Advanced Analytics: The unpredictable nature of renewable sources offers an incredible opportunity to use advanced data analytics to develop, run, and optimise grid integrations with desired efficiencies.
Tools such as Advance Energy Management Systems (AEMSs) can prove enormously helpful and by helping grids collect, analyze, evaluate, and implement data-based decisions, they can address the issue of uncertainty and fluctuation associated with the renewable energy sector.
b) Real-time Monitoring: A combination of advanced sensors, AI, and ML can help energy firms monitor power stations, transmission lines, and transformers in real-time. Real-time monitoring is a prerequisite for optimising grid integration and by allowing early identification, accurate monitoring, and proactive prevention, it can help grids reduce downtime, prevent breakdown, and run maintenance schedules well in advance.
c) Distributed Energy Resources (DERs): To help with optimizing grid integrations, the use of DERs can prove to be of significant benefit to power corporations. DER is a common term referring to a group of devices used for the generation and storage of power and are connected to a centralized grid or power station.
These devices feed the power to grids in case of excess generation and increase the reliability of stations by offering a continuous flow of electricity to customers.
d) Micro-Grid Approach: Another possible opportunity that the power sector can capitalise on is to establish micro-grids – small power units that can generate, transmit, and handle power operations in a completely independent manner.
Microgrids can be integrated seamlessly with the main grids and in case of power outages or central breakdown, these can work autonomously to offer greater resilience to grids besides helping in optimizing their integration with renewable sources in a predictable and anticipated manner.
e) Enhance Visibility: By using advanced grid models such as linear state estimators, utilities can significantly enhance the visibility of Information and make their systems more resilient to the constantly changing dynamics in the renewable sector.
The system makes use of synchronised phasors that determine the real-time quantity of the electricity generated across grids and can also be utilized in implementing area controls, evaluating loading systems, and validating models in addition to detecting deviations in systems and displaying their response results.
Counted among the key requirements, optimizing grid integration is key to maximising the potential of renewable sources as a reliable and stable source of energy. Thankfully, the sector is evolving at a rapid pace and with advancements in technologies, crucial aspects related to energy generation, storage, transmission, and control are achieving higher efficiency than before.
Going further, the optimisation of grid integration will become even more seamless which, in turn. will help the world to make a smooth transition from fossil fuels to renewable sources of energy.
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