Spectral Division of Grid Frequency Deviation for Control Power
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Solution Overview
Problem
The high speed of grid frequency changes in power grids poses significant efficiency challenges for industrial electricity consumers attempting to provide primary control power, as they must rapidly adapt their processes to maintain frequency stability within narrow limits.
Innovation Solution
A method and system that spectrally divide the frequency deviation into different spectral ranges, assigning control power to specific technical units based on the rate of change, utilizing fast units for rapid changes and slower units for more significant changes, thereby optimizing the distribution of control power and reducing the burden on individual units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single technical unit provides primary control power to maintain grid frequency stability, then frequency control reliability is improved, but the reaction speed and efficiency of the technical unit deteriorates due to high rates of change
Solution Approach 1:
The patent divides the primary control power provision into multiple technical units, each responsible for specific frequency deviation ranges (core band and sidebands). This segmentation allows each unit to operate within optimized parameters, improving overall system reliability while maintaining individual unit efficiency by avoiding excessive reaction rate demands on any single unit.
2Reliability
If technical units provide control power across the full frequency deviation range, then comprehensive frequency control is improved, but the energy transfer and storage capacity requirements worsen
Solution Approach 1:
The patent assigns different technical units to different frequency deviation ranges (core band +/-100mHz and sidebands +/-100-200mHz), allowing each unit to be optimized for its specific operational range. This local quality approach reduces the energy transfer and storage capacity requirements for each individual unit while maintaining comprehensive coverage through coordinated operation.
Data Source
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AI summary
The present invention relates to a system and a method for providing control power for controlling a network frequency of a power network operated with a nominal frequency in the event of a frequency deviation of the network frequency from the nominal network frequency. A temporal course of the frequency deviation is spectrally split into at least two different spectral ranges, each of the spectral ranges being assigned to at least two different technical units for providing control power. The required control power is then provided individually or jointly by the technical units in accordance with the spectral split of the temporal course of the frequency deviation, wherein a respective power component of the technical units of control power corresponds to the spectral component of that spectral range, of the temporal course of the frequency deviation, that is assigned to the corresponding technical unit.