Battery Grid Storage Balancing Peak Loads
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Solution Overview
Problem
Current energy storage solutions for power grids, such as coal, oil, and hydropower, are costly, environmentally harmful, and geographically restricted, failing to effectively manage peak electricity demands and balance load variations.
Innovation Solution
A battery-based grid energy storage system comprising a battery array, a bidirectional inverter system, and a monitor system that detects load, frequency, and phase to regulate energy flow between the grid and batteries, optimizing charging and discharging to balance peak loads while minimizing site area, cost, and environmental impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If coal or oil energy storages are used, then backup energy storage capacity is provided, but cost increases and environmental pollution worsens
Solution Approach 1:
The patent replaces thermal energy storage systems (coal/oil combustion) with electrochemical energy storage (battery systems). The bidirectional inverter converts electrical energy to chemical energy for storage and back to electrical energy for discharge, eliminating combustion processes and associated environmental pollution while maintaining backup power capacity.
Solution Approach 2:
The patent changes the fundamental energy conversion parameters from thermal-chemical processes to electrochemical processes. By using batteries with controlled charge/discharge cycles, the system achieves the same reliability function without the harmful emissions, ash, and pollution associated with fossil fuel combustion.
2Reliability
If coal or oil energy storages are used, then backup energy storage capacity is provided, but start-up and shutdown time increases
Solution Approach 1:
The patent replaces the mechanical/thermal inertia of coal and oil power plants with the rapid electrochemical response of battery systems. The bidirectional inverter can switch between charging and discharging modes almost instantaneously, enabling batteries to start up and shut down in seconds compared to the hours required for thermal power plants.
3Productivity
If pumped energy storages are used, then high peak regulation ability is achieved, but site area requirement and construction time increase
Solution Approach 1:
The patent replaces the large-scale mechanical pumped hydro storage system with compact electrochemical battery storage. The battery array with bidirectional inverter provides equivalent peak regulation capability without requiring reservoirs, dams, or extensive geographical features, thereby dramatically reducing the land footprint and construction timeline.
4Productivity
If pumped energy storages are used, then high peak regulation ability is achieved, but construction time increases
Solution Approach 1:
The patent replaces the multi-year construction process of pumped hydro storage facilities with the rapid deployment of modular battery systems. Battery energy storage systems can be manufactured off-site and installed in weeks or months, providing peak regulation capability without the lengthy civil engineering construction required for hydroelectric dams and reservoirs.
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 battery-based system effectively balances power grid loads, reduces environmental pollution, and optimizes energy usage by efficiently managing peak demand, offering a cost-effective and safe solution for power grid management.
Implementation Method 1
a bidirectional inverter system, wherein the bi-directional inverter system is configured to charge battery array using the electric power from the power grid or conversely, input the electric power from the battery array to the power grid
Implementation Method 2
a monitor system configured to detect the load, frequency and phase of the power grid and control the bidirectional inverter system accordingly
Data Source
AI summary
The present invention provides a battery-based grid energy storage for balancing the load of an power grid, wherein the energy storage comprises: a battery array; a bi-directional inverter unit; the bi-directional inverter system is configured to charge battery array using power from the power grid, or conversely, to transmit power from battery array to the power grid; a monitor system configured to detect the load, frequency and phase of the power grid, and control the bi-directional inverter system to charge battery array using power form the power grid, or conversely, transmits power from battery array to the power grid in accordance with the frequency and phase of the power grid so as to balance the load of the power grid, and meet the requirements during peak hours of electric power consumption.