Power Router Microgrid Interconnection for Renewable Grid Stability
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Solution Overview
Problem
The integration of renewable energy sources into existing electric power systems poses challenges due to frequency stabilization limitations, potentially leading to large-scale power outages if not managed properly.
Innovation Solution
The implementation of an electric power network with multiple power routers, each equipped with multiple power ports capable of direct-current power input and output, along with interconnection lines forming a grid structure, allows for flexible power interchange and stabilization through the use of dependent ports with uncontrolled characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the introduction ratio of renewable energy is increased in a current electric power system, then the mass introduction of renewable energy is enabled, but frequency stabilization deteriorates and large-scale power outage may occur
Solution Approach 1:
The electric power system is segmented into multiple microgrids that can operate independently or in coordination. Each microgrid is equipped with its own power router, allowing renewable energy to be integrated at the microgrid level without compromising the stability of the entire system. This segmentation enables high renewable energy introduction ratios while maintaining frequency stabilization through localized control.
Solution Approach 2:
Power routers serve as intermediary devices between renewable energy sources, microgrids, and the main electric power system. These routers convert and regulate power, acting as a buffer that allows renewable energy to be introduced in large quantities while maintaining frequency stability through controlled power exchange and conversion.
2Productivity
If a plurality of microgrids are connected in an asynchronous manner to enable energy interchange, then mass introduction of renewable energy becomes possible, but system complexity increases
Solution Approach 1:
Power routers are designed as universal devices that can handle multiple functions: power conversion, frequency stabilization, microgrid isolation, and energy interchange. This multi-functionality reduces the need for separate specialized equipment for each function, thereby managing system complexity while enabling asynchronous microgrid connections and renewable energy integration.
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 solution enables the mass introduction of renewable energy by maintaining power stability and flexibility, preventing large-scale power outages and allowing for efficient energy interchange within the network.
Implementation Method 1
each power router being configured to convert electric power input from any of the power ports of the power router and to output the converted electric power from at least one of remaining power ports of the power router
Data Source
AI summary
An electric power network includes: a plurality of power routers each including a plurality of power ports; a plurality of interconnection lines configured to connect the power routers in a grid manner via the power ports; and an electric power apparatus configured to consume or supply electric power, the electric power apparatus being connected to a power port that is included in at least one of the power routers and that is not connected to any of the interconnection lines. At least one of the power ports of each of the power routers is set as a dependent port for which characteristics of direct-current power to be input or output are not controlled.