Dynamic Power Grid Models With Real-Time Updates for Security Assessment
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Solution Overview
Problem
Power system models are not updated frequently enough to reflect real-time changes in the grid, leading to inaccurate dynamic security assessments and potential widespread power outages or unnecessary capital investments.
Innovation Solution
Implement real-time updates to dynamic power system models using measurements from phasor measurement units (PMUs) and supervisory control and data acquisition (SCADA) systems to modify model parameters before each iteration of dynamic security assessment (DSA).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If power system models are updated frequently in real-time, then the accuracy of dynamic security assessments is improved, but the device complexity and computational burden increase
Solution Approach 1:
The system performs preliminary actions by pre-processing measurement data from PMUs and SCADA systems before each DSA iteration. Model parameters are updated in advance based on current grid conditions, so that when the dynamic security assessment is executed, the models are already optimized and ready for accurate simulation without requiring complex real-time adjustments during the assessment itself.
Solution Approach 2:
The patent implements dynamic updating of power system model parameters based on real-time measurements from sensors on the grid. The model parameters are made adjustable and changeable according to current operating conditions, allowing the system to adapt to varying grid states while maintaining computational efficiency through structured update mechanisms.
2Device complexity
If static power system models are used, then the device complexity is reduced, but the reliability of security assessment deteriorates due to inability to reflect real-time grid changes
Solution Approach 1:
The system transitions from static to dynamic modeling by implementing real-time updates of power system model parameters based on measurements from PMUs and SCADA systems. This allows the models to reflect current grid conditions including load changes, generation variations, and network topology modifications, thereby maintaining reliability while preserving relative structural simplicity through systematic update procedures.
Solution Approach 2:
The patent incorporates feedback mechanisms where measurement data from sensors on the power grid is continuously fed back into the model updating process. This feedback loop ensures that model parameters are adjusted based on actual grid performance and conditions, improving reliability by grounding the assessments in real-time data while maintaining a manageable level of complexity through automated feedback processing.
Data Source
AI summary
Provided is a system and method for updating dynamic power system models during each DSA analysis cycle. In one example, the method may include iteratively executing a dynamic security analysis (DSA) on a power grid based on a simulation of a dynamic power system model, receiving measurements from one or more sensors on the power grid, modifying one or more parameters of the dynamic power system model used in a previous iteration of the DSA based on the received measurements, simulating the modified dynamic power system model, determining a security value of the power grid during a current iteration of the DSA based on the simulated modified dynamic power system model, and storing the determined security value in memory.