Demand-Side Assets for Synthetic Grid Frequency Response
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Solution Overview
Problem
The proliferation of variable renewable generation technologies complicates the provision and planning of grid services like primary frequency response, synthetic inertia, regulation, and load following/ramping reserve capabilities, as conventional generation sources and traditional methods struggle to reliably and economically secure and deploy these services due to increased variability and reduced system inertia.
Innovation Solution
The system leverages demand-side resources, utilizing advances in information technology, optimization techniques, and man-machine interaction to provide synthetic frequency response, synthetic inertia, and other grid services through Demand Response and Distributed Energy Resources, categorizing assets into simple loads, complex loads, and bi-directional assets for effective management and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If variable renewable generation technologies are proliferated, then clean energy supply is increased, but system inertia is reduced and frequency stability deteriorates
Solution Approach 1:
The patent introduces demand-side assets (DSAs) as an intermediary element to compensate for the reduced system inertia caused by variable renewable generation. DSAs include controllable loads, distributed energy resources, and energy storage systems that can respond to frequency deviations and provide synthetic inertia, thereby mediating between the need for renewable penetration and the need for frequency stability.
Solution Approach 2:
The patent changes the operational parameters of demand-side assets from static to dynamic response characteristics. By implementing synthetic primary frequency response and synthetic inertia through controlled adjustment of DSA operation in response to frequency deviations, the system transforms the inertial characteristics of the grid without requiring physical generation assets.
2Reliability
If conventional generation sources are used to provide grid services, then frequency response and regulation are maintained, but cost-effectiveness deteriorates due to reduced system inertia and increased variability
Solution Approach 1:
The patent inverts the traditional approach by shifting frequency response and regulation services from supply-side conventional generation to demand-side assets. Instead of using generators to balance the grid, controllable loads and distributed energy resources are utilized to provide these services, thereby reducing the need for expensive conventional generation capacity while maintaining reliability.
Solution Approach 2:
The patent enables demand-side assets to self-regulate and provide frequency response services autonomously through automated control systems. DSAs respond to frequency deviations and control signals without requiring direct human intervention, thereby reducing operational costs and improving cost-effectiveness while maintaining the required quality of frequency response.
3Stability of the object's composition
If traditional methods are used to secure and deploy grid services, then operational stability is maintained, but adaptability to variable generation deteriorates
Solution Approach 1:
The patent transforms the static operational framework into a dynamic system that can adapt to variable generation conditions. Demand-side assets are equipped with real-time monitoring and control capabilities that enable them to dynamically adjust their operation based on grid conditions, frequency deviations, and renewable generation variability, thereby maintaining operational stability while enhancing adaptability.
Solution Approach 2:
The patent implements feedback mechanisms where demand-side assets continuously monitor grid frequency and receive control signals from the system operator. This feedback loop enables DSAs to adjust their operation in real-time to counteract frequency deviations caused by variable renewable generation, thereby maintaining operational stability while adapting to changing conditions.
Data Source
AI summary
Systems and methods are provided, which facilitate operations planning, dispatch, regulation control, and autonomous control performance. The disclosure also facilitates systems and methods for utilization of synthetic primary frequency response, synthetic inertia, regulation and load following/ramping reserve capabilities from Demand Response and Distributed Energy Resources for balancing demand and supply and maintaining frequency levels across a power grid.