Hybrid Electrolyzer Plant for Fast Grid Frequency Response
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Solution Overview
Problem
Existing electrolyzer plants are unable to provide the fast frequency response required by grid operators due to the slow response time of the electrolyzers themselves, rather than the main converter.
Innovation Solution
A hybrid electrolyzer plant is proposed, which includes an electrolyzer and an energy storage unit coupled to a grid. The method involves determining a frequency response power in response to meeting specific conditions and distributing this power between the electrolyzer and the energy storage unit to adjust the grid-connected active power, thereby compensating for the slow response of the electrolyzer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If an auxiliary converter is added to compensate for the slow response of the main converter, then the converter response speed is improved, but the electrolyzer plant still cannot provide the fast frequency response required by the grid operator because the electrolyzer本身的响应速度慢
Solution Approach 1:
The patent combines the electrolyzer with an energy storage device to form a hybrid electrolyzer plant. The energy storage device compensates for the slow response of the electrolyzer, enabling the hybrid plant to provide fast frequency response services to the grid while the electrolyzer continues its hydrogen production function.
Solution Approach 2:
The energy storage device acts as an intermediary between the electrolyzer and the grid. It absorbs or releases power quickly to compensate for the electrolyzer's slow response, thereby enabling the hybrid plant to meet grid frequency response requirements without modifying the electrolyzer itself.
2Productivity
If the electrolyzer plant is required to provide fast frequency response, then the grid auxiliary service capability is improved, but the electrolyzer's slow inherent response prevents achieving the required response speed
Solution Approach 1:
The patent merges the electrolyzer system with an energy storage system to create a hybrid plant that combines the hydrogen production capability of the electrolyzer with the fast response capability of the energy storage device, thereby achieving both productivity and speed requirements.
Solution Approach 2:
The hybrid electrolyzer plant performs multiple functions: hydrogen production through the electrolyzer and fast frequency response through the energy storage device. This multi-functionality allows the single plant to satisfy both hydrogen generation and grid auxiliary service requirements simultaneously.
Data Source
Figure 1~3
Figure 4
Figure 5A~5B
AI summary
A hybrid electrolyzer plant, a method for operating a hybrid electrolyzer plant, a computer-readable storage medium and a computer program product are provided. The method for operating the hybrid electrolyzer plant comprises: in response to meeting a frequency response condition, determining a frequency response power, wherein the frequency response condition comprises at least one of: receiving a frequency regulation service order from a grid control center of the grid; and detecting a frequency disturbance of the grid; and based at least in part on responsive characteristics of the electrolyzer, distributing the frequency response power to the electrolyzer and the energy storage unit, so that the grid-connected active power of the hybrid electrolyzer plant is adjusted in consideration of the frequency response power.