# Optimizing Hybrid Batteries for Grid-Connected Wind Power Systems > This patent describes a detailed method to figure out the best size and type of hybrid energy storage systems for wind farms connected to the power grid, aiming to cut costs and reliably deliver power. - **Patent:** US 11862969 - **Original title:** Optimal configuration method for hybrid energy storage of grid-connected wind storage power generation system - **Owner:** Tianjin University - **Granted:** 2024 - **Status:** Active - **Times cited:** 0 - **Field:** energy, renewable_energy, telecommunications, software, ai_ml ## What it does This method helps wind farms decide the best way to combine different energy storage technologies, like batteries and supercapacitors, when connected to the main power grid. First, it analyzes past wind power data by breaking it down into fast and slow changes (frequency domain decomposition) to determine the storage system's initial power rating (Claim 1). Next, it creates a mathematical model that considers the entire lifespan of the wind farm, aiming to both minimize the total cost over time and maximize how consistently the farm can meet its power delivery goals (Claim 1). The method groups typical daily wind patterns using a clustering algorithm to feed into this model (Claim 1). Finally, a multi-objective optimization algorithm solves this model to find the ideal mix and size of energy storage components, which then guides how the wind power system operates (Claim 1). For example, it could determine that a wind farm needs a 10 MWh battery for slow energy shifts and a 2 MW supercapacitor for rapid power fluctuations, ensuring stable grid supply while minimizing replacement costs over 20 years. ## What it does NOT cover - Does not cover optimal configuration methods for energy storage systems that are not connected to a power grid. - Does not cover energy storage optimization for power generation systems other than wind, such as solar or hydroelectric. - Does not cover methods that determine energy storage capacity without first performing frequency domain decomposition on historical power output. - Does not cover optimization models that do not simultaneously minimize annual cost and maximize a target satisfaction rate of output. - Does not cover simple sizing calculations for energy storage that do not involve a multi-objective optimization algorithm for a full life cycle. ## The clever bit The cleverness lies in combining detailed analysis of wind power's fast and slow changes with a sophisticated optimization model that balances long-term costs and consistent power delivery across the entire lifespan of a wind farm. This ensures the hybrid storage system is perfectly tailored to handle wind's variability efficiently. ## Real-world examples 1. Large-scale wind farms integrating battery energy storage systems (BESS) 2. Grid operators planning for increased renewable energy penetration 3. Hybrid energy storage projects combining batteries and supercapacitors 4. Microgrid systems that incorporate wind power and grid connection ## Why it matters Wind power is a clean energy source, but its output can fluctuate, making it challenging to integrate reliably into the power grid. This patent provides a systematic way to size and configure hybrid energy storage, which can smooth out these fluctuations. By doing so, it helps make wind farms more reliable and cost-effective, which is crucial for increasing the amount of renewable energy on the grid and ensuring stable power delivery to homes and businesses. ## Frequently asked questions ### What does Optimizing Hybrid Batteries for Grid-Connected Wind Power Systems cover? This patent describes a detailed method to figure out the best size and type of hybrid energy storage systems for wind farms connected to the power grid, aiming to cut costs and reliably deliver power. ### Who owns patent US 11862969? Tianjin University owns this patent, granted in 2024. ### When does this patent expire? This patent is expected to expire on July 28, 2041, when the invention enters the public domain. ### What problem does this patent solve? Wind power is a clean energy source, but its output can fluctuate, making it challenging to integrate reliably into the power grid. This patent provides a systematic way to size and configure hybrid energy storage, which can smooth out these fluctuations. By doing so, it helps make wind farms more reliable and cost-effective, which is crucial for increasing the amount of renewable energy on the grid and ensuring stable power delivery to homes and businesses. ### What does this patent NOT cover? Does not cover optimal configuration methods for energy storage systems that are not connected to a power grid. **Full plain-English explainer:** https://patentbrief.org/patent/us/11862969/optimal-configuration-method-for-hybrid-energy-storage-of-grid-connected-wind-st **Original patent:** https://patents.google.com/patent/US11862969 --- _Source: PatentBrief — https://patentbrief.org. Patent facts are from public records; the plain-English explanation is PatentBrief's._ ## Related patents Semantically similar inventions in the PatentBrief corpus: - [Optimizing Power for Remote Grids with Diesel, Wind, Solar, and Batteries](https://patentbrief.org/patent/us/9985438/optimization-method-for-independent-micro-grid-system) — This patent describes a computer-based method for designing and operating independent power systems, called micro-grids, to balance cost, reliability, and environmental impact using a mix of diesel generators, wind turbines, solar panels, and energy storage batteries. - [Managing Power with Different Types of Batteries in an Energy Storage System](https://patentbrief.org/patent/us/10756544/energy-storage-system-and-management-method-thereof) — This patent describes an energy storage system that uses multiple types of batteries, each with different charging and discharging speeds, to efficiently manage power from various sources like solar panels or the main power grid for different electricity needs. - [How to Smartly Manage Power in Small Grids with Renewable Energy](https://patentbrief.org/patent/us/11095127/method-for-real-time-scheduling-of-multi-energy-complementary-micro-grids-based-) — This patent describes a method for quickly and efficiently planning how different energy sources (like solar, wind, and batteries) work together in a small, local power grid, especially when renewable energy output changes unexpectedly. - [How Wind Turbines Adapt to Icy Weather to Keep Making Power](https://patentbrief.org/patent/us/11946452/control-system-for-wind-turbines-in-cold-climates) — This patent describes a control system that helps wind turbines manage ice buildup on their blades, allowing them to either keep generating electricity safely or shut down gracefully when conditions get too severe. - [How an EV Charging Station Manages Power from Batteries and the Grid](https://patentbrief.org/patent/us/9168838/charging-control-system-and-charging-control-method) — This patent describes a smart charging system for electric vehicles that decides whether to power cars from a local battery or the main electricity grid, and when to recharge that local battery, to help balance power demand.