Adaptive Grid Stabilization via Phasor Measurement Decision Matrix
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Solution Overview
Problem
Existing electrical energy systems face challenges in maintaining stability due to insufficient adaptation to unforeseen disruptions, leading to potential large-scale shutdowns and blackouts, as current load shedding plans rely on local measurements and fixed parameters, which can result in inadequate or inappropriate responses.
Innovation Solution
A method utilizing phasor measurement devices (PMUs) for synchronous, high-resolution data collection and analysis, combined with a multidimensional decision matrix, enables quick and precise identification and implementation of measures to stabilize the energy system, including load shedding and reserve activation, based on system-wide information and experience data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If load shedding relays with fixed parameters are used, then standardized measures to ensure grid stability can be initiated, but the load shedding is not adapted to the respective disruption and operating state, resulting in too much or too little load being shed
Solution Approach 1:
The patent implements dynamic load shedding by continuously monitoring system frequency and automatically adjusting the shedding amount in real-time based on actual system conditions, replacing fixed parameter relays with an adaptive control system that responds to changing operational states
Solution Approach 2:
The system employs feedback mechanisms by continuously measuring system frequency and using this information to adjust load shedding decisions, creating a closed-loop control system that adapts to actual system conditions rather than relying on predetermined fixed parameters
2Reliability
If local load shedding is implemented, then local grid stability can be maintained, but coordination in international interconnected grids is not always guaranteed and system-wide optimization is lost
Solution Approach 1:
The patent creates a universal load shedding system that operates effectively both locally and internationally by implementing standardized frequency-based control logic that can be applied across different grid levels and boundaries, enabling coordinated response in interconnected grids while maintaining local stability
3Speed
If phasor measurement devices and multidimensional decision matrix are used, then rapid and targeted stabilization can be achieved, but the device complexity and data processing requirements increase significantly
Solution Approach 1:
The patent replaces complex mechanical and manual decision-making systems with automated electronic data processing and algorithm-based decision matrices, using computer systems to rapidly analyze phasor measurement data and determine optimal load shedding actions without human intervention
Solution Approach 2:
The system creates simplified digital representations (models) of the complex power system within the decision matrix, using phasor measurement data to generate actionable intelligence that captures essential system states without requiring full complexity of the actual grid
Data Source
Figure 1
AI summary
The present invention relates to a method for controlling and/or regulating an electrical energy system, in which experience data on the stability of the energy system are provided in a first data storage device, and a multidimensional decision matrix (8) is created in a second data storage device using a data processing arrangement (6). This matrix is derived from the experience data (5) and contains, as a first dimension, system states (9) of the energy system and, as a second dimension, possible events (10) in the energy system. At least one measure (14, 44) for ensuring the stability of the energy system is assigned to each of the system states (9) and events (10). Furthermore, the system states (9) and events (10) are each assigned at least one measure (14, 44) to ensure the stability of the energy system. The method also incorporates pointer measurement data (11) for current and voltage with high temporal resolution and a timestamp, each obtained using phaser measuring devices distributed throughout the energy system.By means of the data processing arrangement (6), a system state (12) and an event (13) are selected based on the pointer measurement data (11), so that at least one measure (14) is selected and automatically executed in the energy system by means of actuators (15) to ensure the stability of the energy system. Furthermore, a system and a computer program product for controlling and/or regulating an electrical energy system are the subject of the invention.