Parking Lot Power Interconnection System for Emergency Load Supply
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Solution Overview
Problem
Electric-powered automobiles with large battery capacities cannot supply power to loads during emergencies if they are moved, as their batteries cannot be utilized when the vehicles are in motion, leading to a gap in providing required power to critical loads during disasters or emergencies.
Innovation Solution
A power system interconnection system comprising a storage battery, an AC-DC power conversion device, a charge and discharge station for electric-powered automobiles, and an interconnection control device installed on a parking lot, which can supply power from the storage battery or charge and discharge stations to critical loads during emergencies, ensuring continuous power supply even when vehicles are not present.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electric-powered automobiles are used as emergency power supply, then power can be supplied to loads during disasters, but power cannot be supplied if the vehicles are moved
Solution Approach 1:
The system separates the power supply function from the vehicle by extracting batteries from electric-powered automobiles and storing them in a dedicated storage battery room. This segmentation allows the power supply function to be independent of vehicle mobility, resolving the contradiction between reliability and adaptability.
Solution Approach 2:
A power conversion device acts as an intermediary between the storage battery and the load, enabling power conversion and supply without requiring the original vehicle presence. This intermediary component ensures continuous power supply while decoupling from vehicle mobility constraints.
2Duration of action of stationary object
If batteries are extracted from electric-powered automobiles, then continuous power supply is possible, but the vehicles cannot be used for their original transportation purpose
Solution Approach 1:
The system divides the battery from the vehicle body, allowing the battery to serve as a stationary power supply while the vehicle can potentially be used for other purposes or replaced. This segmentation enables the power supply duration to be extended without completely sacrificing vehicle productivity.
Solution Approach 2:
The extracted batteries become a universal power source that can supply various loads during disasters, while the vehicle system can potentially serve multiple functions including charging other vehicles or being replaced with new battery-equipped vehicles, thus maintaining overall system productivity.
3Power
If a large number of batteries are stored for emergency power supply, then sufficient power can be supplied to loads, but the storage space and system complexity increase
Solution Approach 1:
The system merges multiple battery units into a unified storage battery room with centralized power conversion and control. This consolidation achieves the required power supply capacity while reducing overall system complexity compared to distributed battery storage across multiple locations.
Solution Approach 2:
The power conversion device serves as an intermediary that manages the complexity of battery storage and power delivery. It handles battery charging, discharging, and power conversion automatically, reducing the operational complexity despite having large battery capacity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively supplies power to critical loads from the storage battery or charge and discharge stations, ensuring that required power is maintained during emergencies, even if electric-powered automobiles are moved, thereby addressing the power supply gap during disasters.
Implementation Method 1
an AC-DC power conversion device for the storage battery
Implementation Method 2
a storage battery
Data Source
AI summary
An object is to provide a power system interconnection system and a method of installing the power system interconnection system that are able to supply a load with required power. A power system interconnection system comprises a storage battery an AC-DC power conversion device for the storage battery a charge and discharge station for an electric-powered automobile and an interconnection control device that are installed on a parking lot. The interconnection control device supplies a first load with power from at least one of the charge and discharge station and the AC-DC power conversion device in a case where the electric power system is in an emergency situation.