Preocupado com a confiabilidade do fornecimento de energia após a integração de energia renovável?

Implement energy storage solutions to balance supply and demand fluctuations. Invest in smart grid technology to enhance monitoring and control. Collaborate with utility companies to ensure seamless integration and reliability. Regularly review and update your grid management strategies to adapt to changing conditions.

I worked on a feasibility project where reliability was a major concern. We designed a microgrid solution with solar, batteries and smart controls. During high variability periods, the batteries would discharge to power critical loads. Edge controllers would be used to coordinate the power flows between all resources. During the final optimization additional large scale batteries were considered as a backup.

Renewable Energy can actually contribute to grid stability however currently interconnection providers are not studying renewable assets correctly which contributes to grid instability. Without proper modeling, grid transformation won't be fully understood by interconnection providers. We have to study how renewables effect the grid, how the respond to grid events, and how they are brought online. Renewables are brought on circuits - not at a singular time, which means that grid operators need to understand that until a renewable asset reaches COD, the site's scada and power plant controller may not be fully programmed to follow the way the site was modeled. This can contribute greatly to grid instability.

Grid interconnection from all regions is pivotal for the stability of supply and demand since it can manage the demand and take the electricity source from other regions as long as it can balance the demand. Even though the sun is not shining and the wind is not blowing in one region but the demand is high, the operator of the grid can take the electricity from another source even from a far region. Moreover, there still should be a peaker power plant such as CCGT which has a high-speed ramp-up in the grid so that the grid can still be stable. On the other hand, energy storage for every renewable energy power plant is important but it will create a high cost, therefore, the smart grid implementation can be a solution for grid stability.

⚡ Keeping the Lights On: Ensuring Grid Stability with Renewables The stability of the electrical grid is paramount when integrating renewable energy sources. Unlike fossil fuels, which can be burned any time to generate electricity, renewables like solar and wind are dependent on weather conditions. To maintain grid stability, energy providers must carefully balance supply and demand through forecasting, advanced grid management technologies, and backup power sources. These measures ensure that even when the sun isn't shining or the wind isn't blowing, your lights stay on.

Energy storage is one of the solutions to maintain grid stability since solar PV and wind energy are intermittent due to relying on weather conditions. There are several types of energy storage which come from electrochemical, thermo-mechanical, mechanical, and electrical. The most common energy storage is batteries such as Lithium-ion which is one of the electrochemical processes, and this technology is the most reliable and has a fast time to store or deliver the electricity to the grid. However, the cost is still high, in particular for the large scale. Another technology is pump hydroenergy storage, which combines hydropower with solar PV or wind energy or even both of them. This can be a solution for stabilizing the grid.

It's crucial to consider storage solutions to ensure power supply reliability post renewable energy integration. Batteries and other energy storage systems can store excess energy generated during peak times and provide backup power during low generation periods. This helps stabilize the grid and ensures a steady electricity supply, addressing concerns about reliability effectively.

One project I supported on was aiming for 80% renewable penetration but had some reliability limitations. We designed a 20 MWh vanadium flow battery system, which helped us maintain around 98% to 100% capacity. The lifetime of the project was 15 years, with a daily cycle of the battery, using a hybrid generation consisting of complementary solar and wind 100 MW system. The battery responded well to fluctuations, reducing curtailment and maximizing renewable energy usage. This was a pilot system, that was successful, used for scalable design trials.

Adding multiple types of variable assets to the grid is critical to ensure that the grid remains stable. We need not only need battery solutions to match solar/wind resourcing during non production hours, but we need pumped hydro as well. The more diverse options that we deploy to the grid, the more reliable the grid becomes.

Demand response is of great use when facing peaking capacity challenges, especially during summer times. Imagine a load pattern with a peak demand during 17h to 20h, using IoT devices and smart meters we could control large both large commercial and residential loads during these periods. This would enable the capacity to lower thermostats by 2 degrees during peaks, or assist on shifting non-critical industrial processes to off-hours. This would help to also have a more flexible load, which would have a positive impact in reducing peak demand.

This is the beauty of the ISO (Independent System Operator) model that has been deployed across North America - it allows renewable generators to bid into multiple markets and provide solutions specific to the grid needs. Bidding into the day ahead, auxiliary, and hourly market all support grid reliability with a clean energy flex.

It is important to diversify our energy mix with complementary sources. This blends stability and mitigates variable output risks. We can utilize solar PV and wind together for balanced day/night production; hydropower as backup storage to convert excess electricity into potential energy during low demand periods. Advancements in battery technology enable effective management of fluctuating renewables, while thermal generators can serve as reliable backup generators when renewable output drops. Demand response programs encourage consumers to adjust their power usage based on availability, ensuring grid stability even during peak consumption periods.

Hybridization is very important, combining onshore wind, solar PV and battery energy storage systems assets at a single location can create a high value compare with individual technologies Integrating wind and solar (with or without storage) can overcome intermittency issues and provide more stable and manageable power output Without any doubt Hybridization have many advantages and is the future

Smart grids offer an effective solution by efficiently managing various energy resources and adapting in real-time to changes in supply and demand. They help to integrate renewables like solar and wind into our energy mix. Smart grids also use advanced metering infrastructure for two-way communication between utilities and consumers, helping manage consumption patterns more effectively while optimizing grid efficiency. Additionally, they support dynamic pricing models that reflect renewable availability in real-time, giving consumers control over their electricity usage habits. Overall, smart grids enhance reliability while promoting clean energy use to minimize environmental impacts and contribute towards the future energy landscape.

The NERC reliability standards provide a great framework to ensure that renewable assets are as reliable as the coal plant down the street. The reliability standards govern operations, maintenance, and cybersecurity for these assets. It's an important framework that is critical to ensuring grid reliability across all of North America.

Very important, there must be a regulatory framework for each country or communities so that clear criteria are established for more technologically advanced projects as BESS, Hybridization and the use of synchronous condenser to improve the stability of the network Many times these types of new technologies don´t have a clear and concise legal framework Legislation that is not clear and doesn´t support renewable implementation will make it difficult to invest in new technology and in certain countries

The NERC standards are a good framework for inter and intra entity grid reliability but do not address the generation asset mix which is the focus of this article. Those decisions are made be entity owners, politicians and public service commissions. Excess wind and solar generation on the grid, without better energy storage solutions, is problematic for transmission operators and balancing authorities to manage today. Smart grid and additional energy storage research/incentives are essential as the asset mix continues to move toward more wind and solar generation.

Monitor real-time data and use advanced forecasting to predict and mitigate potential issues. Regular maintenance and upgrades to infrastructure can also enhance reliability. Additionally, fostering partnerships with technology providers can offer innovative solutions to emerging challenges. By staying proactive and adaptive, you can ensure a stable and reliable power supply even with increased renewable energy integration.

7. Explore New possibility Let's not limit ourselves to traditional thinking. The current state of renewable energy is not entirely renewable, and relying solely on existing sources like solar and wind may not be enough. Instead, let's embrace the spirit of innovation and exploration that Nikola Tesla exemplified. AI can be a game-changer in optimizing energy production. These technologies can ensure a reliable and efficient power supply, even with a high percentage of renewable energy sources. By combining human ingenuity with AI's capabilities, we can create a sustainable power supply for the future.

It’s a valid concern, especially as renewable energy sources like wind and solar are inherently variable. More tips: Improve the flexibility and responsiveness of the power grid through advanced grid management technologies. This can involve using smart grid technologies, demand response programs, and grid modernization efforts to integrate better and manage renewable energy resources. Additionally, diversifying the renewable energy mix can also contribute to increased reliability. Combining energy storage, grid modernization, production forecasting, and a diverse renewable energy portfolio can help ensure power supply reliability even after integrating renewable energy sources.

It’s a valid concern, especially as renewable energy sources like wind and solar are inherently variable. More tips: Improve the flexibility and responsiveness of the power grid through advanced grid management technologies. This can involve using smart grid technologies, demand response programs, and grid modernization efforts to integrate better and manage renewable energy resources. Additionally, diversifying the renewable energy mix can also contribute to increased reliability. Combining energy storage, grid modernization, production forecasting, and a diverse renewable energy portfolio can help ensure power supply reliability even after integrating renewable energy sources.