Aggregated Energy Storage Dispatch for Grid Stability Contracts
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Solution Overview
Problem
The stored electric energy from individual users is insufficient to maintain power supply stability or reliability for large-scale power grids, necessitating a method to aggregate and dispatch multiple stored electric energies effectively.
Innovation Solution
An electric energy dispatching system and method that controls multiple energy storage devices in an area to provide stored electric energy to the grid according to a contracted power supply during a specified contract period, stabilizing power supply through aggregated energy dispatch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple energy storage devices are aggregated and controlled to provide stored electric energy to the grid, then the power supply stability and reliability of the grid are maintained, but the device complexity increases
Solution Approach 1:
The patent aggregates multiple distributed energy storage devices into a unified system managed by a single management device. This combines numerous small-scale storage units (each providing only several kW) into a collective resource that can deliver sufficient power to maintain grid stability, resolving the contradiction between individual device limitations and system-level reliability requirements
Solution Approach 2:
The patent introduces an energy storage management device as an intermediary between multiple energy storage devices and the grid. This management device coordinates and controls the aggregated energy storage system, simplifying the interface with the grid while maintaining the complexity only where needed for coordination, thus managing system complexity while achieving reliability
2Ease of operation
If a single user's stored electric energy is used, then the system is simple to operate, but the power supply stability of large-scale power grids cannot be maintained
Solution Approach 1:
The patent combines multiple small-scale energy storage devices from different users into a unified aggregated system. This merging transforms numerous simple individual units into a collective resource capable of providing sufficient power for grid stability, maintaining operational simplicity at the individual device level while achieving system-level reliability
Solution Approach 2:
The energy storage management device serves as an intermediary that handles the complexity of coordinating multiple devices, allowing individual users to benefit from simple operation of their own devices while the system as a whole achieves the reliability needed for grid support
Data Source
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AI summary
An electric energy dispatching method (S100) and an electric energy dispatching system (100) are provided. The electric energy dispatching method (S100) includes: receiving a contracted power supply (EDCP) and a contract period (EDCT) of an electric energy dispatch contract (EDC) in an area; controlling energy storage devices (110_1-110_n) in the area to provide a plurality of stored electric energy (PB1-PBn) to a grid (GD) according to the contracted power supply (EDCP) during the contract period (EDCT); and stabilizing power supply of the grid (GD) using the plurality of stored electric energy (PB1-PBn).