Sensor-Based Capacitor Monitoring for Real-Time Aging Detection
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Solution Overview
Problem
Existing capacitor systems lack real-time monitoring capabilities to detect premature aging and potential failure risks, such as insulation resistance damage and pyrolysis, which can lead to gas leakage and explosion hazards.
Innovation Solution
An electrical system with integrated sensors to measure device and environmental parameters, including electrical conditions and environmental factors, coupled with a processing unit to evaluate capacitor element information in real-time, enabling continuous monitoring and generating alarms or reports for operator intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional measurement methods are used to monitor capacitor health, then measurement accuracy can be achieved, but the system requires disconnection from power circuit and visual inspection, resulting in loss of time and reduced productivity
Solution Approach 1:
The patent replaces traditional mechanical/visual inspection methods with sensor-based electrical measurement. Sensors continuously monitor electrical parameters (capacitance, loss factor, voltage, current) while the capacitor remains connected to the power circuit, eliminating the need for physical disconnection and manual inspection.
Solution Approach 2:
The monitoring system enables continuous measurement of capacitor parameters during operational mode. The sensors and evaluation unit continuously track electrical characteristics without interrupting the capacitor's function, allowing real-time detection of aging and degradation processes.
2Reliability
If real-time monitoring sensors and processing units are integrated into the electrical system, then continuous monitoring capability is improved, but device complexity increases
Solution Approach 1:
The evaluation unit performs multiple functions: it processes sensor data, evaluates capacitor element information, determines aging states, and generates alarms or reports. This multi-functional approach consolidates monitoring tasks into a single integrated component rather than requiring separate systems for each function.
Solution Approach 2:
The system automatically monitors itself without requiring external manual intervention. The sensors continuously measure electrical parameters, the evaluation unit processes this data autonomously, and the system self-diagnoses capacitor health status, eliminating the need for external inspection tools or manual analysis.
3Reliability
If comprehensive sensor monitoring is implemented, then detection of premature aging and failure risks is improved, but manufacturing cost and device complexity increase
Solution Approach 1:
The system monitors changes in electrical parameters (capacitance values, loss factors, voltage, current) over time to detect aging processes. By tracking parameter variations rather than requiring complex physical inspections, the system achieves reliable aging detection through relatively simple electrical measurements.
Data Source
AI summary
Embodiments of the present invention are related to an electrical system with a capacitor element and to a method for operating at least one capacitor element in an electrical system, wherein at least one sensor is configured to measure at least one parameter chosen from device parameters and environmental parameters, a processing unit is configured to process the at least one parameter and to evaluate a capacitor element information of the at least one capacitor element based on the at least one parameter, and wherein the capacitor element information includes one or more chosen from a capacitance loss, a tangent variation, a stress, a remaining lifetime, a failure condition, and wherein the at least one sensor includes one or more sensors configured to measure one or more gas species that are chosen from gas species that can be created during a pyrolysis event of one or more components of the capacitor element.