Mobile Battery Aggregation Control for Multi-Facility Power Balancing
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Solution Overview
Problem
Existing systems for managing renewable energy, such as those involving electric vehicles (EVs), face challenges in adjusting and consuming electric energy due to limitations in load size and EV usage, leading to insufficient battery charging and reduced capacity for energy adjustment and consumption.
Innovation Solution
An aggregation control system that utilizes a mobile storage battery apparatus, controlled by a server apparatus, to manage and adjust electric power across multiple facilities by creating charge-discharge conditions based on demand and supply information, allowing for expanded energy adjustment and consumption capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a storage battery is installed within the premises of a customer and an EV to perform self-consumption, then the electricity generated by renewable energy can be utilized more efficiently, but the amount of electric energy that can be adjusted in response to demand response requests remains insufficient due to restraints by the size of power consumption of the load within the customer's facility
Solution Approach 1:
The patent introduces a mobile storage battery apparatus that moves between multiple facilities, transforming the energy storage system from a single-location static model to a multi-location dynamic model. This dimensional change allows the EV battery to serve multiple facilities sequentially, dramatically expanding the total electric energy adjustment capacity beyond what any single facility's load size would permit.
Solution Approach 2:
The mobile storage battery apparatus is designed to perform multiple functions: it charges at facilities with surplus renewable energy, stores energy, and discharges at facilities needing power supplementation. This multi-functionality allows a single EV battery to serve numerous facilities across different locations, overcoming the limitation of individual facility load sizes and enabling broader demand response participation.
2Productivity
If the aggregator pays remuneration to customers for demand response participation, then customer participation in demand response is encouraged, but the overall capacity for energy adjustment is still limited by the size of loads within customer facilities
Solution Approach 1:
The patent merges the storage battery resources of multiple facilities into a single mobile EV battery system. By combining the charging and discharging operations across numerous facilities, the system creates a aggregated energy adjustment capacity that far exceeds what any individual facility could provide, thus increasing both productivity and available electric energy for demand response.
Solution Approach 2:
The mobile storage battery apparatus acts as an intermediary between renewable energy sources and load centers. It collects surplus energy from facilities with generation excess and transfers it to facilities with consumption needs, effectively mediating energy distribution and expanding the total adjustable energy capacity beyond the sum of individual facility limitations.
3Reliability
If renewable energy power generation is curtailed to maintain system stability, then system stability is maintained, but the advantages of introducing renewable energy are reduced and popularization may be hampered
Solution Approach 1:
The system performs preliminary charging of the mobile EV battery at facilities with surplus renewable energy before system stability issues arise. By storing energy in advance when generation exceeds demand, the system prevents the need for curtailment and maintains both system stability and renewable energy utilization effectiveness.
Solution Approach 2:
The aggregator system continuously monitors renewable energy generation, load demand, and battery charge-discharge status across multiple facilities. This feedback mechanism enables real-time optimization of energy flow, ensuring system stability is maintained while maximizing renewable energy utilization by dynamically adjusting charging and discharging operations based on current system conditions.
Data Source
AI summary
An aggregation control system for adjusting electric power between a plurality of facilities via a mobile storage battery apparatus, wherein each of the plurality of facilities includes a control apparatus that controls charging and discharging of the mobile storage battery apparatus, and the aggregation control system includes a server apparatus coupled to each control apparatus; and wherein the server apparatus: creates a charge-discharge condition for the mobile storage battery apparatus on the basis of management information for electric power demand and supply at a specified facility among the plurality of facilities; compares a charge-discharge request to a control apparatus of the specified facility with the charge-discharge conditions; and issues a command to the control apparatus to charge or discharge the mobile storage battery apparatus according to a result of the comparison.