Autonomous Power Control Apparatus for Renewable Grid Integration
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Solution Overview
Problem
The integration of renewable energy sources like wind and solar into electrical power grids poses challenges due to their variability and non-dispatchable nature, leading to instability and inefficiency in voltage and frequency maintenance, as traditional grid architectures are not equipped to handle the rapid changes and asynchronous operation of these sources, resulting in increased energy losses and potential power outages.
Innovation Solution
The implementation of an electrical power distribution network with autonomous electrical power control apparatuses that include signal conversion components and energy storage, capable of dynamically adjusting output voltage and frequency, and utilizing virtual air-gap transformers with control windings to manage power flow and improve power factor, enabling bi-directional energy transfer and efficient operation across a wide range of conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional grid architectures are used to integrate renewable energy sources, then the existing infrastructure can be utilized, but voltage and frequency stability deteriorate due to variability and non-dispatchable nature of renewable sources
Solution Approach 1:
The patent implements dynamic voltage and frequency control through autonomous power control apparatuses that continuously adjust operating parameters in response to real-time conditions. The system transitions from static traditional grid control to dynamic adaptive control, enabling the grid to respond rapidly to variability in renewable energy sources while maintaining stability.
Solution Approach 2:
The autonomous power control apparatuses operate independently to maintain voltage and frequency within target ranges, with each apparatus self-regulating based on local conditions. This decentralized self-service approach eliminates the need for centralized control while improving reliability through distributed intelligence and local decision-making.
2Ease of manufacture
If traditional signal conversion methods are used, then simple voltage transformation is achieved, but efficiency deteriorates under wide range of operating conditions and rapid changes
Solution Approach 1:
The patent employs power electronic converters that dynamically change electrical parameters (voltage, frequency, phase) to optimize energy transfer efficiency. The signal conversion components adjust operating parameters in real-time based on load conditions and renewable source variability, maintaining high efficiency across a wide range of operating conditions unlike traditional fixed-ratio transformers.
Solution Approach 2:
The signal conversion system transitions from static transformation to dynamic conversion, enabling rapid adaptation to changing operating conditions. The power electronic converters can respond in milliseconds to variability in renewable energy sources, minimizing energy losses that occur with traditional methods under variable conditions.
3Adaptability or versatility
If asynchronous operation of renewable energy sources is allowed, then integration flexibility is improved, but grid stability deteriorates due to inability to maintain synchronized operation
Solution Approach 1:
The autonomous power control apparatuses act as intermediaries between asynchronous renewable energy sources and the synchronized grid. Each apparatus independently manages the connection, converting variable frequency and voltage from renewable sources into stable, synchronized output that maintains grid integrity while allowing flexible integration of diverse energy sources.
Solution Approach 2:
The system dynamically changes frequency and voltage parameters to bridge the gap between asynchronous renewable sources and the synchronized grid. Power electronic converters adjust output frequency and phase in real-time, enabling flexible integration of wind and solar sources while maintaining stable synchronized operation across the entire grid.
4Productivity
If rapid changes in renewable energy output are accommodated, then renewable energy utilization is maximized, but power factor and efficiency deteriorate
Solution Approach 1:
The autonomous power control apparatuses incorporate real-time feedback control mechanisms that continuously monitor power factor, voltage, and current conditions. The controllers adjust operating parameters dynamically to maintain optimal power factor even during rapid changes in renewable energy output, preventing efficiency deterioration while maximizing renewable energy utilization.
Solution Approach 2:
The system dynamically adjusts power factor correction and efficiency optimization in real-time as renewable energy output changes. The power control apparatuses respond to rapid fluctuations by continuously adapting impedance matching and reactive power compensation, maintaining high efficiency across all operating conditions rather than degrading under variable loads.
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 enhances the stability and efficiency of the electrical power distribution network by maintaining target voltage and frequency, reducing energy losses, and enabling the integration of high levels of renewable energy sources without the need for additional infrastructure, thus addressing the limitations of traditional grid architectures.
Implementation Method 1
virtual air-gap transformers with control windings to manage power flow and improve power factor
Implementation Method 2
signal conversion components receiving electrical power in the form of a corresponding first signal having a corresponding first fundamental frequency and a corresponding first characteristic voltage, and generating a corresponding second signal having a corresponding second fundamental frequency and a corresponding second characteristic voltage
Data Source
AI summary
An electrical power distribution network includes: a plurality of electrical power control apparatuses, each of which include one or more signal conversion components receiving electrical power in the form of a first signal and generating a corresponding second signal, a controller that controls operation of the signal conversion components, electrical power generation components acting as sources of electrical power to at least some of the electrical power control apparatuses, and electrical power consumption components acting as sinks of electrical power from at least some of the electrical power control apparatuses. The electrical power control apparatuses operate autonomously but are interconnected so that the electrical power control apparatuses collectively maintain the voltages and frequencies of electrical power signals flowing through the electrical power distribution network at target values to compensate for variations in the sinks and/or sources of electrical power.