Battery Energy Station Charging Control for Peak Grid Load
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Solution Overview
Problem
The increasing demand for electricity from electric vehicles strains the existing power grid, particularly during peak hours, leading to potential power outages and blackouts, as traditional power plants struggle to meet varying energy demands efficiently.
Innovation Solution
A battery energy station system comprising a battery storage system, an energy module, and a processing unit that adjusts charging efficiency based on predetermined conditions, such as battery demand rates or full charge ratios, to optimize charging during different time periods, allowing for higher efficiency during peak hours and cost-saving charging during off-peak hours.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the battery energy station charges batteries at high speed during peak hours to meet high battery demand, then the battery charging efficiency is improved, but the power grid becomes overloaded and causes power outages or blackouts
Solution Approach 1:
The system performs preliminary charging actions during off-peak hours when power demand is low, storing energy in the battery storage system. This advance preparation allows the system to meet peak-hour charging demands without overloading the power grid, as the pre-charged batteries can be quickly exchanged or deployed when needed.
Solution Approach 2:
The battery storage system acts as an intermediary between the power grid and the charging demand. It absorbs excess power during off-peak hours and releases it during peak hours, mediating the mismatch between power supply and demand timing. This intermediary buffer prevents direct grid overload while maintaining high charging efficiency when needed.
2Loss of energy
If the battery energy station charges batteries at slow rate during off-peak hours to save costs, then the operating cost is reduced, but the battery demand is not met timely
Solution Approach 1:
The system takes advantage of off-peak hours to perform preliminary charging at slower rates, which is cost-effective. The charged energy is stored in the battery storage system for later use, ensuring that when peak demand occurs, the batteries are already charged and ready for immediate deployment, thus meeting time-sensitive demands without incurring peak-hour charging costs.
Solution Approach 2:
The system dynamically adjusts charging rates based on the time period and power grid conditions. During off-peak hours, it charges at slower, more economical rates. During peak hours or when demand requires, it switches to faster charging modes, providing flexible adaptation to varying operational requirements and optimizing both cost and time efficiency.
3Power
If the power grid is upgraded to meet increasing electricity demand from electric vehicles, then the power supply capacity is improved, but the upgrade cost and time are huge
Solution Approach 1:
Instead of upgrading the entire power grid at once, the system segments the power supply function by introducing distributed battery storage units. Each battery energy station independently manages its own charging and storage, breaking down the monolithic grid upgrade problem into smaller, manageable units that can be deployed incrementally without requiring comprehensive infrastructure overhaul.
Solution Approach 2:
The battery energy stations perform self-service by generating, storing, and managing their own power needs. They autonomously charge during off-peak hours, store energy locally, and discharge during peak demand, reducing dependence on centralized grid upgrades. This self-sufficient approach allows individual stations to meet their power needs without requiring proportional grid capacity increases.
Data Source
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AI summary
Battery energy stations and charging management methods thereof are provided, which are suitable for an electronic equipment used for storing and charging a plurality of batteries. First, the batteries are charged with a first charging efficiency in a first period, wherein the first charging efficiency in the first period is fixed. Then, it is determined whether a predetermined condition is met within the first period. When the predetermined condition is met within the first period, the first charging efficiency is adjusted, and the batteries are charged with the adjusted first charging efficiency.