Integrated Storage Charging Control for Grid Load Balancing
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Solution Overview
Problem
Charging piles have a significant impact on the grid, leading to insufficient capacity, poor electric power quality, and inefficient energy utilization during peak power consumption, resulting in slow charging and poor user experience.
Innovation Solution
An integrated storage and charging system that adjusts its working mode based on the load rate of the connection point to the grid, optimizing energy utilization by integrating energy storage apparatuses and flexibly switching between power supply and charging modes to match real-time demand and supply situations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If charging piles work at full load, then charging power is sufficient, but grid capacity becomes insufficient and electric power quality deteriorates
Solution Approach 1:
An energy storage apparatus is introduced as an intermediary between the charging pile and the grid. The energy storage apparatus absorbs excess charging power during peak periods, preventing direct impact on grid capacity and power quality, while still enabling high-power charging operations.
Solution Approach 2:
The energy storage apparatus pre-charges during off-peak periods when grid load is low, storing energy in advance. This preliminary energy accumulation allows the charging pile to operate at high power during peak periods without immediately drawing from the grid, thus avoiding grid capacity issues.
2Productivity
If charging piles work at full load, then charging speed is fast, but energy utilization efficiency becomes poor
Solution Approach 1:
The system implements periodic charging and discharging cycles of the energy storage apparatus. During off-peak periods, the energy storage apparatus charges from the grid; during peak periods, it discharges to support fast charging. This periodic operation optimizes energy utilization by avoiding wasteful peak-period grid drawing while maintaining high charging speed.
3Loss of energy
If the integrated storage and charging system adjusts working mode frequently, then energy utilization efficiency improves, but system complexity increases
Solution Approach 1:
The charge control apparatus continuously monitors grid load rate and system state, using feedback control to automatically adjust working modes. This feedback mechanism enables efficient energy utilization through dynamic mode adjustment while automating the control process, reducing the perceived complexity for operators.
Data Source
AI summary
A charge control method includes: determining a load rate of a point of connection where the integrated storage and charging system is connected to a grid; determining a working mode of the integrated storage and charging system and a power consumption object corresponding to the working mode based on the load rate; where the working mode includes a power supply mode and a charging mode; determining working parameters corresponding to the working mode of the integrated storage and charging system based on the power consumption object; and controlling the integrated storage and charging system to work according to the working parameters.