Decentralized Storage Unit Grid Stabilization via Segmented Control
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Solution Overview
Problem
Existing solutions for managing energy fluctuations in renewable energy systems, such as pumped storage power plants and decentralized storage units, are costly and inefficient, and decentralized storage units lack reliability in stabilizing the energy grid due to consumer control over energy distribution.
Innovation Solution
A decentralized storage unit that can be easily connected to a consumer's power grid, forming a 'plug and play' device, which communicates only with an external control device, allowing network operators or energy suppliers to manage energy storage and release, thereby stabilizing the grid without consumer interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If decentralized storage units are installed for consumers to directly supply their building's internal electrical grid, then consumers can use generated energy directly, but the energy fed into the grid varies without reliable control for compensating grid fluctuations
Solution Approach 1:
The system segments control authority between consumer-owned storage units and the energy supplier. Multiple decentralized storage units are distributed to consumers, but control is segmented and assigned to the energy supplier through a control interface, allowing reliable centralized management of grid stabilization while maintaining decentralized physical infrastructure.
Solution Approach 2:
A control interface acts as an intermediary between the consumer's storage unit and the energy supplier. This intermediary enables the energy supplier to remotely control the storage unit's operations (charging, discharging) without requiring direct consumer intervention, thus ensuring reliable grid stabilization while maintaining consumer ownership of the hardware.
2Reliability
If pumped storage power plants are used to store energy, then energy can be stored and retrieved to balance power grid fluctuations, but they require a lot of space and are expensive to build and maintain
Solution Approach 1:
The large-scale pumped storage system is segmented into many small, decentralized storage units distributed at consumer locations. Each unit is a simple battery-based system that can be easily installed without complex infrastructure, while collectively they provide the same grid-stabilization function as a large centralized plant.
Solution Approach 2:
The mechanical pumped storage system (requiring water reservoirs, pumps, and turbines) is replaced with electrical battery-based storage units. This substitution eliminates the need for complex mechanical infrastructure, reduces space requirements, and enables flexible deployment at consumer locations while maintaining energy storage and grid-balancing capabilities.
3Adaptability or versatility
If consumers have direct control over decentralized storage units, then they can decide energy distribution, but the grid operator or energy supplier cannot influence energy fed into the grid
Solution Approach 1:
The control interface serves as an intermediary that enables remote operation by the energy supplier. Consumers retain ownership and can see their energy usage, but the control interface allows the energy supplier to send commands (charge, discharge, standby) to the storage unit, ensuring both consumer awareness and supplier control capability.
Solution Approach 2:
The system implements feedback mechanisms where the storage unit reports its status (charge level, operational state) to both the consumer and the energy supplier through the control interface. This feedback loop allows consumers to monitor their energy assets while enabling the energy supplier to make informed control decisions for grid stabilization.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution provides a cost-effective and reliable means to compensate for energy fluctuations in the grid by allowing centralized control of decentralized storage units, ensuring a stable energy supply network without the need for extensive infrastructure or consumer access to energy storage.
Implementation Method 1
an energy storage device (12), which can temporarily store electrical energy from the supply network
Implementation Method 2
a circuit arrangement (14), which can convert current to be fed into the grid via the current interface (16) into alternating current
Data Source
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AI summary
Disclosed is a storage unit (10) for a consumer, said unit comprising an energy accumulator (12) in which electrical energy can be stored, and comprising a current interface (16), via which the storage unit (10) can be connected to an electrical grid (20). The storage unit (10) further has a circuit arrangement (14), which is arranged between the energy accumulator (12) and the current interface (16) in the direction of current flow, and a control interface (18) for controlling the storage unit (10). The storage unit (10) can only be controlled via the control interface (18), which interface only communicates with an external control device (48). The storage unit (10) can only be controlled via the control interface (18), which interface only communicates with an external control device (48).