Battery Ship Power Transfer Without HVDC Voltage Boosting
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Solution Overview
Problem
The use of high-voltage direct-current cables in offshore wind power transmission systems requires complex configurations and high-cost devices due to the need for voltage boosting and high-voltage compatibility, increasing system complexity and costs.
Innovation Solution
A moving body, such as a ship equipped with a storage battery, charges and discharges power between offshore and onshore facilities, using voltage levels below the maximum voltage value to eliminate the need for voltage boosting and high-voltage compatible devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If high-voltage direct-current cables are used for long-distance offshore power transmission, then power transmission loss is reduced, but system complexity and cost increase due to required voltage boosting and high-voltage compatible devices
Solution Approach 1:
The patent introduces a moving body (ship) equipped with a storage battery as an intermediary carrier between the offshore power generation facility and the onshore power receiving facility. The storage battery charges at a predetermined voltage lower than the maximum direct-current voltage during transportation, eliminating the need for high-voltage compatible devices and voltage boosting equipment while enabling long-distance power transmission without increasing system complexity
2Loss of energy
If voltage boosting is implemented to suppress transmission loss in direct-current power transmission, then power transmission efficiency improves, but the need for expensive high-voltage devices and transformers increases system cost
Solution Approach 1:
The patent replaces expensive, permanent high-voltage infrastructure (transformers, high-voltage cables, voltage boosting equipment) with a movable, lower-voltage storage battery system. The storage battery charges at a predetermined voltage lower than the maximum direct-current voltage, allowing the use of cheaper components while achieving the same power transmission function over long distances
3Reliability
If high-voltage compatible devices are installed at transmitting and receiving ends, then power transmission reliability improves, but device complexity and cost increase
Solution Approach 1:
The patent extracts and removes the high-voltage compatible devices (direct-current circuit breakers, voltage boosting equipment, transformers) from the power transmission system. By using a moving body with a storage battery that operates at lower predetermined voltage, the system achieves power transmission without requiring these complex high-voltage components at the transmitting and receiving ends
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
This approach simplifies the power transmission system configuration and reduces costs by eliminating the need for high-voltage devices and transformers, while enabling efficient power transmission over long distances.
Implementation Method 1
charges a storage battery (14) mounted on the moving body (10) with power generated by a power generation facility (2) and feeds the power to a power receiving facility (5) from the storage battery (14) transported by the moving body (10)
Data Source
AI summary
Provided is a moving body used in a power transmission system that charges a storage battery mounted on the moving body with power generated by a power generation facility and feeds the power to a power receiving facility from the storage battery transported by the moving body. This moving body is provided with a battery control device that causes the storage battery to be charged with the supply of power based on a voltage value that does not reach a maximum voltage value of direct-current power between the power generation facility and the power receiving facility.