Battery Storage Dispatch Using Demand Index Grid Control
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Solution Overview
Problem
Existing energy storage systems struggle to dynamically schedule power and operate effectively as responsive resources within the power grid, particularly in optimizing power contribution or reception based on demand indices.
Innovation Solution
A system comprising a battery storage system and a storage management system with a processor that directs generated energy to the battery storage system, discharges battery-stored energy to the power grid, and controls the discharge based on a demand index.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If battery energy storage system operates without dynamic scheduling based on demand index, then system operation is simpler, but operational efficiency and responsiveness to power grid demand fluctuations deteriorates
Solution Approach 1:
The system dynamically adjusts battery discharge rates based on real-time demand index values from the power grid, transitioning from static operation to dynamic response. The controller modifies operational parameters (discharge rate, power output) according to varying demand conditions, enabling the battery storage system to adapt its behavior to match grid requirements while maintaining manageable complexity through automated control algorithms.
2Productivity
If battery storage system discharges energy continuously, then power contribution to grid is maximized, but battery lifespan and reliability deteriorates due to excessive cycling
Solution Approach 1:
The system performs preliminary charging of the battery storage system during periods of low demand or excess generation, preparing energy reserves in advance for subsequent discharge during peak demand periods. This advance preparation allows the system to contribute power when needed without requiring continuous discharge cycles, thereby extending battery lifespan while maintaining reliable power contribution capability.
Solution Approach 2:
The controller implements periodic charge-discharge cycles based on demand index patterns rather than continuous operation. By analyzing temporal variations in demand index values, the system schedules discharge operations during high-demand periods and charging during low-demand periods, creating a rhythmic operational pattern that maximizes power contribution while allowing battery rest periods that preserve reliability and extend lifespan.
3Speed
If battery storage system responds rapidly to demand index changes, then responsiveness to grid fluctuations improves, but system stability and control precision may deteriorate
Solution Approach 1:
The controller continuously monitors demand index values from the power grid and uses this feedback to adjust battery discharge rates in real-time. The feedback mechanism compares actual grid demand with battery output, enabling the system to respond rapidly to demand changes while maintaining stability through closed-loop control that automatically corrects deviations and prevents excessive fluctuations in power output.
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
The system optimizes the contribution and reception of power from the power grid by effectively utilizing battery-stored energy in response to demand fluctuations, enhancing the operational efficiency of the energy storage system within the power grid.
Implementation Method 1
a battery storage system; discharge battery-stored energy from the battery storage system to the power grid
Data Source
AI summary
A system and method for supplying power to a power grid. The system includes a battery storage system; and a power management system, the power management system including a storage management system with a processor configured to: direct generated energy to the battery storage system; discharge battery-stored energy from the battery storage system to the power grid; and control the discharge of the battery-stored energy from the battery storage system to the power grid based on a demand index.