Vehicle-to-Home Charging Suppression for Post-Shortage Load Control
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Solution Overview
Problem
The increasing number of electric vehicles being charged at home during power shortages can exacerbate electric power supply issues, leading to potential blackouts in regions with tight power margins, as many vehicles may start charging simultaneously when the shortage improves, rapidly increasing power demand.
Innovation Solution
An electric power management system that includes a processor to manage vehicle-to-home electric power feeding, transitioning from a power-saving state to a charging suppression state when the power shortage improves, and back to charging when the situation becomes chargeable, ensuring controlled power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If vehicles start charging simultaneously when electric power shortage improves, then charging demand is satisfied, but electric power supply becomes insufficient and blackouts occur
Solution Approach 1:
The system performs preliminary action by establishing a charging suppression state before actual charging begins. When electric power shortage improves, vehicles transition to a charging suppression state first, which prevents simultaneous charging startup. This preliminary suppression allows controlled resumption of charging, avoiding sudden power demand spikes that would cause blackouts.
2Use of energy by moving object
If vehicles charge at home during power shortage, then external power demand is reduced, but local power supply becomes insufficient
Solution Approach 1:
The system implements periodic action through staged charging resumption. Instead of continuous or simultaneous charging, vehicles charge in a controlled sequence after power shortage improves. The charging suppression state acts as a periodic interrupt, allowing the local power supply to stabilize before charging resumes, thus preventing local blackouts while still reducing external power demand.
3Reliability
If charging is suppressed to prevent blackouts, then power supply stability is maintained, but charging time increases
Solution Approach 1:
The system applies dynamics by making the charging state adjustable and responsive to power supply conditions. The charging suppression state is not a permanent block but a dynamic control mechanism that automatically transitions when power supply stabilizes. This dynamic approach maintains power supply stability during critical periods while minimizing charging time delays by resuming charging as soon as conditions permit.
Data Source
AI summary
An electric power management system includes a processor. The processor is configured to, when an electric power shortage situation improves, cancel a vehicle-to-home electric power feeding state of a vehicle and a vehicle-to-home apparatus and cause the vehicle and the vehicle-to-home apparatus to transition to a charging suppression state. The vehicle-to-home electric power feeding state is established in accordance with an electric power saving request. The charging suppression state is a state in which charging of the vehicle is suppressed. The processor is configured to, when the electric power shortage situation changes to a chargeable situation, cancel the charging suppression state and cause the charging of the vehicle with electric power from the vehicle-to-home apparatus to start.