Vehicle SOC Control for Demand Response Grid Balance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle systems with electricity storage devices cannot contribute to electricity supply-demand balance when only charging is possible, as they do not have a mechanism to adjust their state of charge effectively during demand response events.
Innovation Solution
A vehicle equipped with an electric load, an electricity reception device, and a control device that performs external charging and SOC lowering control, allowing it to participate in demand response by adjusting its state of charge and electricity consumption to balance the grid, even when only charging is possible.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the vehicle increases charging amount to ensure sufficient electricity for travel, then the vehicle has enough energy for future trips, but the vehicle cannot contribute to reducing electricity demand during down DR events
Solution Approach 1:
The invention dynamically adjusts the charging amount based on DR event status. During down DR events, the vehicle performs SOC lowering control to reduce charge consumption, while outside of down DR events, it charges normally to ensure sufficient electricity for travel. This dynamic adjustment allows the vehicle to balance energy needs with grid support responsibilities.
Solution Approach 2:
The invention changes the SOC parameter dynamically based on DR event conditions. During down DR events, the target SOC is lowered to reduce charge demand, while during other periods, the SOC is maintained at normal levels to ensure adequate energy supply for travel requirements.
2Quantity of substance
If the vehicle performs SOC lowering control to contribute to down DR, then the vehicle can help balance electricity supply-demand, but the vehicle has less electricity available for subsequent travel
Solution Approach 1:
The invention performs SOC lowering control in advance during down DR events at travel endpoints, before the vehicle needs to depart. By lowering SOC at these specific timing points, the vehicle contributes to grid balance while ensuring that sufficient electricity remains for the upcoming travel period.
Solution Approach 2:
The invention uses feedback from DR event status and travel schedule information to dynamically adjust SOC control strategies. The control device monitors whether down DR events are occurring and adjusts charge consumption accordingly, ensuring grid support during events while maintaining adequate energy levels for travel needs.
Data Source
AI summary
A vehicle is a vehicle that is capable of participating in demand response (DR) for adjustment of electricity supply-demand balance in an electric power grid. The vehicle includes an MG, an inlet, a battery, and an ECU. The ECU performs SOC lowering control that controls the MG in such a manner that when the vehicle participates in down DR at a travel end point of the vehicle where an electricity facility is installed, a travel end SOC, which is a SOC of the battery at the travel end point, becomes lower than when the vehicle does not participate in down DR at the travel end point.