Dynamic Control Power Adjustment for Grid Stability
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Solution Overview
Problem
The increasing capacity of power plants, especially offshore wind farms and photovoltaic systems, exceeds the maximum feed-in capacity limits, leading to insufficient instantaneous and primary reserve, risking frequency instability in the grid, and existing manual control methods result in inefficient resource utilization and underutilization of renewable feed-ins.
Innovation Solution
A method for dynamically determining and adjusting control power based on measured variables within the energy supply network, using automated systems to optimize the availability of control power according to grid status, allowing for efficient use of resources only when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual control methods are used to maintain control power availability, then grid stability is ensured, but resource utilization efficiency deteriorates due to continuous provision of control power regardless of actual demand
Solution Approach 1:
The patent implements dynamic adjustment of control power settings based on real-time grid conditions. The control power value is continuously adapted according to actual grid status, transitioning from static manual control to dynamic automated control. This resolves the contradiction by maintaining grid stability through responsive control while improving resource utilization by adjusting control power levels according to actual demand conditions.
Solution Approach 2:
The patent employs feedback mechanisms where grid status information is continuously monitored and used to adjust control power settings. The system receives feedback about actual grid conditions and automatically modifies control power availability accordingly. This feedback loop enables the system to maintain reliability while avoiding unnecessary control power provision, thus improving resource efficiency.
2Reliability
If control power is continuously kept available to ensure grid stability, then frequency stability is maintained, but renewable feed-in utilization deteriorates due to throttling of renewable energy sources
Solution Approach 1:
The patent dynamically adjusts control power requirements based on actual grid conditions rather than maintaining fixed high levels. When grid conditions are stable, control power is reduced, allowing renewable feed-ins to operate at full capacity. When instability is detected, control power is increased to maintain frequency stability. This dynamic approach resolves the contradiction between frequency stability and renewable energy utilization.
Solution Approach 2:
The patent changes the control power parameter based on grid status conditions. By adjusting this key parameter dynamically, the system optimizes both frequency stability and renewable energy utilization. When control power is lowered under stable conditions, renewable feed-ins are no longer unnecessarily throttled, improving productivity while maintaining reliability through adaptive control.
3Reliability
If maximum control power is provisioned to handle potential grid disconnections, then grid stability during emergencies is improved, but resource utilization deteriorates due to permanent underutilization of available resources
Solution Approach 1:
The patent prepares control power in advance but adjusts the level based on actual risk assessment. Rather than permanently maintaining maximum control power, the system preliminarily provisions control power at optimized levels according to current grid conditions and risk factors. This resolves the contradiction by ensuring emergency readiness while avoiding permanent resource underutilization through condition-based adjustment.
Solution Approach 2:
The patent implements dynamic control power adjustment that responds to changing grid conditions and risk levels. When emergency risks are high, control power is increased to ensure stability. When risks are low, control power is reduced to improve resource utilization. This dynamic responsiveness resolves the contradiction between emergency preparedness and resource efficiency.
4Reliability
If higher primary control reserve is required to accommodate increased feed-in capacity, then grid stability is maintained, but the complexity of control management increases
Solution Approach 1:
The patent enables the control system to automatically determine and adjust control power requirements based on grid conditions, reducing the need for complex manual control management. The system serves itself by autonomously assessing grid status and adjusting control power levels, thereby maintaining grid stability while simplifying control management complexity through automation.
Solution Approach 2:
The patent automatically adjusts control power parameters based on grid conditions and feed-in capacity. By dynamically changing these parameters rather than requiring fixed high-level control reserves, the system maintains grid stability while reducing the complexity of control management. The automated parameter adjustment eliminates the need for complex manual coordination of control resources.
Data Source
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AI summary
A method for providing control power and/or control power reserve in an electrical power supply network comprising: recording at least one parameter in at least parts of the power supply network for a given period; determining a control power and/or control power reserve for the part of the power supply network depending on the recorded at least one parameter for the respective period; transmitting at least one setting parameter to a participant in the part of the power supply network to provide control power with which the participant contributes to a control reserve for the part of the power supply network.