Grid Stabilization via Geolocation Reactive Power Control
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Solution Overview
Problem
The existing energy supply networks face instability due to imprecise reactive power management, particularly in scenarios where transformers fail, leading to voltage fluctuations that can destabilize the grid and result in additional costs from exceeding reactive power specifications.
Innovation Solution
A method that measures and calculates reactive power based on geographical location and voltage values at multiple network connection points, using existing inverters to manage reactive power without affecting active power delivery, thereby stabilizing the network and avoiding excessive costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reactive power management is performed without considering geographical location and voltage measurements at multiple connection points, then the control system is simpler, but network stability deteriorates due to imprecise reactive power distribution
Solution Approach 1:
The control system is segmented into multiple independent measurement points distributed across the network, each measuring local voltage and geographical location. Each inverter at these points independently calculates and adjusts its reactive power based on local conditions, eliminating the need for a centralized complex control system while improving network stability through distributed intelligence
Solution Approach 2:
Each inverter performs self-service by autonomously measuring local voltage, determining its geographical location, calculating the required reactive power adjustment, and executing the adjustment without external control. This self-service capability simplifies the overall control system architecture while maintaining precise reactive power management for network stability
2Measurement precision
If precise line length data is used for reactive power management, then reactive power distribution accuracy is improved, but data collection complexity and cost increase
Solution Approach 1:
The patent introduces geographical location data as an intermediary parameter that replaces the need for precise line length measurements. By using readily available geographical coordinates of network connection points and combining them with measured voltage values, the system achieves accurate reactive power distribution without the complexity of collecting and maintaining precise line length data
Solution Approach 2:
The system changes the measurement parameters from requiring precise line length data to using geographical location coordinates and voltage measurements. This parameter substitution maintains the accuracy needed for reactive power distribution while significantly reducing data collection complexity, as geographical location data is easily obtainable through GPS or other location services
3Productivity
If reactive power is not optimized based on measured voltage values and geographical location, then the control mechanism is simpler, but additional costs occur from exceeding reactive power specifications
Solution Approach 1:
The control mechanism dynamically adjusts reactive power based on real-time measured voltage values and geographical location data. Each inverter continuously monitors its operating conditions and automatically adjusts its reactive power output to optimize energy delivery efficiency while complying with specifications, transforming the static control into a dynamic adaptive system that responds to changing network conditions
Data Source
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AI summary
For the grid stabilization of an electrical power supply network (1), the voltage at a first grid connection point (15) of a first voltage level (0.4kV) to a power generator (PV) and at a second grid connection point (17) to a second voltage level (20kV) as well as at least a third grid connection point (19) to a consumer (9, 13) is recorded as a voltage measurement value (), whereby, based on their connection with the geographical location (Pn) of the corresponding grid connection point (15, 17, 19), a reactive power consumption or a reactive power supply of the power generator (PV) is determined.