Hybrid Wind Solar Thermal Power Stabilization
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Solution Overview
Problem
Renewable energy power generation systems, such as those using wind and solar power, face challenges in stabilizing electric power output due to natural fluctuations, leading to increased costs and difficulties in maintaining low-cost power generation, especially with the deterioration of storage batteries used to smooth power fluctuations.
Innovation Solution
A hybrid power generation system combining wind power generation and solar thermal power generation, where the electrothermal converting unit converts fluctuating wind power into heat to stabilize the solar thermal power generation, using an electrothermal converting unit with a high-pass filter to extract high-frequency components and smooth electric power output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If storage batteries are used to smooth power generation output, then electric power stabilization is improved, but running cost increases due to battery exchange and initial cost increases for large-scale systems
Solution Approach 1:
The patent replaces the mechanical/chemical storage battery system with a control system that uses high-pass filters to extract fluctuating components from wind power output. This control-based approach eliminates the need for physical batteries while achieving the same power stabilization function, thereby reducing both initial and running costs.
Solution Approach 2:
The patent introduces an intermediary control system with high-pass filter circuits that processes wind power output before it reaches the grid. This intermediary extracts and manages the fluctuating components, allowing direct connection to the grid without storage batteries while maintaining power quality.
2Reliability
If large-scale storage batteries are used for large-scale power generation, then power generation output smoothing is improved, but considerable expense is required
Solution Approach 1:
The patent replaces expensive large-scale storage battery systems with a control-based fluctuation extraction system using high-pass filters. This substitution maintains power smoothing capability for large-scale generation while eliminating the considerable expense associated with battery procurement, installation, and maintenance.
Solution Approach 2:
The patent changes the approach from physical energy storage to signal processing by transforming the power output characteristics through high-pass filter circuits. This parameter change in the control strategy enables cost-effective large-scale power generation without requiring large quantities of expensive battery materials.
3Reliability
If storage batteries are used to compensate for power fluctuations, then electric power quality is improved, but device complexity increases due to battery management systems
Solution Approach 1:
The patent replaces complex battery management systems with simpler electronic filter circuits. The high-pass filter-based control system achieves power quality improvement through passive or active filtering without requiring the complex monitoring, charging, and safety management systems that battery installations demand.
Solution Approach 2:
The patent extracts only the necessary fluctuation compensation function from the complex battery system, implementing it through dedicated high-pass filter circuits that isolate and manage only the power fluctuation aspect. This extraction simplifies the overall system by removing unnecessary battery-related complexity while maintaining power quality.
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 effectively stabilizes electric power output, reduces the need for costly storage batteries, and lowers operational costs by efficiently utilizing wind power and improving power generation efficiency.
Implementation Method 1
an electrothermal converting unit converting part of electric power generated by the wind power generation apparatus into heat to heat the heating medium
Implementation Method 2
a heat exchanger exchanging heat of the heating medium heated by the heater and heat of a working fluid to operate a drive mechanism of a power generator
Implementation Method 3
a heater heating a heating medium by solar heat
Data Source
AI summary
Electric power obtained by wind power generation is used effectively. A power generation system in an embodiment includes: a wind power generation apparatus; a solar thermal power generation apparatus; and an electrothermal converting unit. The solar thermal power generation apparatus includes: a heater heating a heating medium by solar heat; and a heat exchanger exchanging heat of the heating medium heated by the heater and heat of a working fluid to operate a drive mechanism of a power generator. The electrothermal converting unit converts part of electric power generated by the wind power generation apparatus into heat to heat the heating medium.