Modular Power Conversion for Distributed Grid Integration
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Solution Overview
Problem
The traditional electrical grid faces challenges in efficiently integrating distributed power generation, storage, and loads, particularly with the increasing use of smaller, dispersed power sources like wind and photovoltaic installations.
Innovation Solution
A modular power conversion system that includes power electronics and software to facilitate the integration of distributed power generation, storage, and loads into a flexible smart grid, microgrid, or microgrid clusters. This system allows for the efficient conversion and allocation of electricity based on production and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional large generating plants are used for electricity generation, then power transmission efficiency is improved, but the ability to integrate distributed power generation is worsened
Solution Approach 1:
The patent segments the power conversion system into multiple independent modular units, each capable of handling distributed generation. These modules can be individually configured to interface with various distributed sources (wind, solar, etc.) while collectively maintaining efficient power transmission to the grid, thus resolving the contradiction between transmission efficiency and distributed integration capability.
Solution Approach 2:
The modular power conversion system is designed with universal interfaces and standardized communication protocols that enable it to accommodate multiple types of distributed power generation sources. Each module can adapt to different generation technologies while maintaining consistent performance standards, allowing the system to integrate diverse distributed sources without compromising overall transmission efficiency.
2Adaptability or versatility
If modular power conversion system is implemented, then integration of distributed resources is improved, but system complexity is worsened
Solution Approach 1:
By dividing the complex power conversion system into standardized modular units, the patent reduces overall system complexity. Each module performs a specific function and can be independently tested, installed, and maintained. This segmentation allows distributed resources to be integrated through simple module addition rather than complex system redesign.
Solution Approach 2:
The patent combines multiple functions (power conversion, control, monitoring, protection) into integrated modular units. This merging approach reduces the number of separate components and interfaces needed, thereby simplifying the overall system architecture while maintaining the ability to integrate diverse distributed resources.
3Loss of energy
If distributed power generation is increased, then consumer cost reduction is improved, but power failure risk is worsened
Solution Approach 1:
The modular power conversion system incorporates real-time monitoring and control feedback mechanisms that continuously assess the status of distributed generation sources and grid conditions. This feedback enables automatic detection of potential failures, dynamic load balancing, and coordinated shutdown procedures that protect against cascading failures, thereby maintaining reliability while enabling cost-effective distributed generation integration.
Data Source
AI summary
A method for determining when a connection of a power system to a grid has been disconnected. The method includes the power system supplying a first amount of reactive power to the grid to which the power system is connected, and the power system determining if there is a frequency change within the grid. This includes if the frequency change does not exceed a predetermined threshold, the power system supplying a second amount of reactive power to the grid, and if the frequency exceeds a predetermined threshold, the power system supplying a first amount of reactive power to the grid.