DC Power Trunk Voltage Setting for Flexible Power Interchange
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Solution Overview
Problem
Current power supply systems, particularly those using direct current, face challenges in simplifying configuration for power interchange and reducing operation costs, as they often require complex management of voltage and frequency across multiple devices connected via a DC power trunk line, leading to inefficiencies in power distribution and trading.
Innovation Solution
A power supply system that sets individual power-feeding and power-receiving voltages for supply-side and demand-side devices connected to a DC power trunk line, calculates power interchange as the time integration of current values, and allows for flexible device connection and disconnection, enabling automatic adjustment of unit supply amounts based on economic significance and reducing operational costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex management of voltage and frequency is implemented across multiple devices connected via DC power trunk line, then power distribution control is improved, but device complexity and operation cost increase
Solution Approach 1:
The patent divides the power supply system into independent supply-side devices and demand-side devices, each capable of autonomously determining their power generation or consumption state based on local voltage conditions. This segmentation eliminates the need for complex centralized management while maintaining reliable power distribution control through distributed decision-making.
Solution Approach 2:
Each power supply unit and demand-side device autonomously determines its state based on voltage-related conditions without requiring complex communication or centralized control. The system achieves reliable power distribution through self-service mechanisms where devices independently adjust their operation based on local voltage measurements.
2Reliability
If complex management of voltage and frequency is implemented across multiple devices, then power distribution control is improved, but operation cost increases
Solution Approach 1:
By segmenting the system into autonomous units that independently manage their own operation based on voltage conditions, the patent eliminates the need for expensive centralized management infrastructure. Each unit operates independently, reducing overall operation costs while maintaining reliable power distribution.
Solution Approach 2:
The system achieves reliable power distribution control through self-service mechanisms where each device autonomously determines its state based on local voltage measurements, eliminating the need for costly centralized monitoring and control systems.
3Adaptability or versatility
If individual voltage settings are implemented for supply-side and demand-side devices, then adaptability of power interchange is improved, but system complexity increases
Solution Approach 1:
The patent assigns individual voltage setting capabilities to supply-side devices and demand-side devices separately, allowing each to adapt its operation independently. This segmentation enables flexible power interchange between devices with different voltage requirements while maintaining simple overall system architecture through distributed voltage management.
Data Source
AI summary
A power supply system including: a DC power trunk line; a demand-side device; a supply-side device that is configured to supply electric power and that is connected with the DC power trunk line to output a DC power to the demand-side device that is connected with the DC power trunk line to receive a DC power, and a calculator that is configured to: set a power-feeding voltage of the supply-side device on a supply side; set a power-receiving voltage of the demand-side device on a demand side; and regard a charge amount or a time integration of current value supplied from the supply-side device to the DC power trunk line, as well as a charge amount or a time integration of current value supplied from the DC power trunk line to the demand-side device, as an amount of power interchange.