Autonomous Renewable Energy Control Device for Grid Stability

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional renewable energy power generation systems face instability due to weather conditions, leading to uneconomical power suppression based on calendar predictions, which results in reduced CO2 reduction contributions and increased operational burdens, hindering the integration of renewable energy into power grids.

Innovation Solution

An autonomous renewable energy control device that uses power converters with proportional-control type power adjusting functions, instantaneous power detectors, comparison units, and control units to adjust power output based on real-time weather and system data, allowing for stable and flexible power generation management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If output suppression is performed based on calendar predictions, then power grid stability is maintained, but power generation is reduced even when weather conditions allow for generation

Engineering Contradiction:

Improvepower grid stabilityVSAvoidpower generation output

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The control device continuously monitors actual weather conditions and compares them with prediction data, then adjusts power generation output in real-time. When actual conditions are better than predicted, the system increases output; when conditions deteriorate, it reduces output accordingly, creating a closed-loop feedback system that optimizes both grid stability and power generation

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system transitions from static calendar-based suppression to dynamic weather-responsive control. Power generation output is continuously adjusted based on real-time weather data, allowing the system to adapt flexibly to changing conditions rather than following fixed schedules

Inventive Principle:

Principle #15Dynamics

2Measurement precision

If manual parameter changes are required for power conversion control, then control precision is maintained, but operational complexity and time consumption increase

Engineering Contradiction:

Improvepower control precisionVSAvoidcontrol operation simplicity

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The control device automatically performs all parameter adjustments and control operations based on weather data without requiring manual intervention. The system self-regulates power conversion parameters, eliminating the need for operators to manually change settings while maintaining precise control through automated algorithms

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

Manual mechanical parameter adjustment is replaced with an automated electronic control system. The control device uses electronic circuits and processing units to automatically adjust power conversion parameters based on weather conditions, replacing the need for manual operational intervention

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

The solution enables stable, efficient, and economically viable renewable energy integration into power grids, reducing the need for manual parameter changes and enhancing CO2 reduction efforts by accurately managing power generation according to actual weather conditions and system demands.

Implementation Method 1

power converters connected respectively to one or more power generation installations that generate power from renewable energy, and having a proportional-control type power adjusting function that converts the power generated by the respective power generation installations from DC power into AC power

Methodology Applied

Scientific EffectPower conversion (DC to AC):

Implementation Method 2

an instantaneous power detector that detects instantaneous power of the power outputted from the power converters

Methodology Applied

Scientific EffectPower detection:

Data Source

PatentUS10594139B2Autonomous stably-supplying type renewable energy control device

Publication Date: 2020.03.17 MATSUO CONSTR

AI summary

The present invention is provided with: a power converter (14) connected to a power plant (12) for generating power from renewable energy and having a proportional-control type power adjusting function that outputs the power generated by the power plant (12) after converting a direct current into an alternating current, and that adjusts the outputted power proportionally to a manipulation level; an instantaneous power detector (3) that detects an instantaneous power of the power outputted from the power converter (14); a comparison unit (4) that compares the instantaneous power detected by the instantaneous power detector (3) and a target value set by a generated power setting unit (5) and outputs a comparison signal; a control unit (6) that adjusts the comparison signal outputted by the comparison unit (4); and an output signal unit (7) that outputs the comparison signal adjusted by the control unit (6) to the power converter (14) as the manipulation level. Since the generated power setting unit (5) sets the target value on the basis of a power generation level setting value demanded by an information processing unit, the instantaneous power detected by the instantaneous power detector (3) is controlled to be the target value set by the generated power setting unit (5).