EV Power Trading Bid Control Using SOC-Based Vehicle Availability
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Solution Overview
Problem
Existing technologies for managing power trading in mobility equipped with secondary batteries face inaccuracies in predicting the number of vehicles that can supply electric power, leading to potential failures in electric power bids and inefficiencies in energy distribution.
Innovation Solution
A management device that calculates and adjusts the necessary number of vehicles required to supply electrical energy based on state of charge history, determines bid power amounts by comparing capable and necessary vehicle output, and corrects for prediction errors by adjusting energy bids and charging plans to ensure accurate power supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the prediction of the number of vehicles is based on simple position proximity to EVSE, then the determination method is simple, but the prediction accuracy is low leading to bid failures
Solution Approach 1:
The system performs preliminary actions by calculating the necessary number of vehicles in advance based on historical SOC data before the actual power trading bid. This preliminary calculation uses past state of charge information to predict future availability, allowing the system to prepare accurate bid power amounts beforehand and avoid bid failures.
Solution Approach 2:
The system implements feedback by continuously acquiring actual vehicle connection information and comparing it with predicted values. The acquisition part gathers real-world data about which vehicles actually connect to EVSE, and this feedback is used to refine and correct the prediction model, improving accuracy over time while maintaining a relatively simple determination method.
2Quantity of substance
If the bid power amount is set high to maximize profit, then the potential profit increases, but the risk of power supply failure increases
Solution Approach 1:
The system calculates the necessary number of vehicles in advance based on historical SOC data before setting the bid power amount. This preliminary calculation establishes a reliable baseline that ensures power supply reliability while allowing the system to set appropriately high bid amounts without excessive risk of failure.
Solution Approach 2:
The system uses partial action by setting the bid power amount based on a calculated necessary number rather than attempting to bid with all available vehicles. This partial approach optimizes the balance between profit maximization and reliability by bidding with exactly the number of vehicles needed, avoiding both over-bidding (which risks failure) and under-bidding (which reduces profit).
Data Source
AI summary
Provided is a management device that manages bid to power trading market of electric power which is supplied to power network from a plurality of moving bodies having electrical storage device, the management device including a necessary-number-calculation-part that calculates necessary number of moving bodies required to supply predetermined electrical energy according to time period and the predetermined electrical energy from history of a state of charge of the electrical storage device, a necessary-number-storage that stores necessary number of the moving bodies, an acquisition part that acquires information related to whether the moving bodies can output the electric power to the power network in certain time period, and a bid-power-amount-determining-part that determines bid power amount made to power trading market based on comparison between number of moving bodies that can output the electric power to the power network in the time period and the necessary number of the moving bodies.