Magnetic Capacitor Failure Indicator for Power-Free Bank Inspection
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Solution Overview
Problem
Conventional electrical capacitor banks face challenges in identifying failed capacitor units efficiently and cost-effectively, as existing monitoring systems can be expensive and require power sources, deterring investment due to the high voltage and long lifetime expectancy of capacitors.
Innovation Solution
A system with failure indicators, including a magnetic element that moves from a first to a second orientation based on mechanical or electromagnetic impulses within the capacitor unit, providing a visual indication of failure without the need for a power source, allowing operators to quickly identify failed units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional current and voltage measurement devices are implemented to monitor capacitor units, then failure detection capability is improved, but system cost and complexity increase
Solution Approach 1:
The patent extracts the failure detection function from complex electronic monitoring systems and implements it through a simple mechanical indicator that responds to physical impulses from capacitor failures. The indicator device is a standalone component that can be attached to capacitor units without requiring integration into the overall monitoring system, thereby simplifying the system architecture while maintaining failure detection capability.
Solution Approach 2:
The failure indicator is designed as a low-cost, simple mechanical device that can be easily replaced or reset after indicating a failure. This approach trades the durability of expensive electronic sensors for the simplicity and low cost of a disposable-like indicator that serves its purpose of failure notification and then can be reset or replaced.
2Loss of information
If electronic monitoring systems with data transmitters are implemented, then failure information transmission is improved, but power source requirements and cost increase
Solution Approach 1:
The failure indicator is a passive device that does not require an external power source. It automatically responds to mechanical or electromagnetic impulses generated by capacitor failures and provides visual information about the failure state. The indicator serves itself by utilizing the physical energy from the failure event rather than requiring an independent power supply system.
Solution Approach 2:
The patent removes the power transmission and data communication functions from the monitoring system, extracting only the essential failure indication function. This eliminates the need for power sources, data transmitters, and complex electronics, leaving a simple mechanical indicator that provides failure information without any power requirements.
3Ease of operation
If manual inspection of capacitor units is performed, then operator control is maintained, but time to identify failed units increases
Solution Approach 1:
The failure indicator utilizes visual differentiation through orientation changes - the indicator assumes different visible states (such as protruding vs. retracted positions, or different orientations) to clearly distinguish failed capacitor units from operational ones. This visual signaling system allows operators to quickly identify failures during inspection without requiring complex diagnostic procedures.
Solution Approach 2:
The failure indicator is pre-configured to automatically assume a visible failure state when a capacitor unit fails, eliminating the need for operators to perform preliminary diagnostic actions. The indicator is already in the correct visual state to communicate failure information as soon as the failure occurs, ready for immediate operator observation during routine inspections.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables cost-effective, power-free indication of capacitor failures, reducing operator time in identifying issues and improving reliability and efficiency by providing a visual means to locate and address failed units within the capacitor bank.
Implementation Method 1
the first failure indicator is held in the first orientation based on a magnetic force between the first magnetic element of the first failure indicator and the first capacitor unit
Implementation Method 2
the first failure indicator being configured to move from a first orientation to a second orientation based on a mechanical or electromagnetic impulse in the first capacitor unit resulting from a failure of the first capacitor unit
Data Source
Figure 1A~1B
Figure 2
Figure 3A~3B
AI summary
The disclosure generally relates to a failure indicator for providing an indicator that a failure has occurred on a capacitor unit of a capacitor bank. In some embodiments, the failure indicator may include a magnetic element, and the failure indicator may be configured to move from a first orientation to a second orientation based on a mechanical or electromagnetic impulse in the capacitor unit resulting from a failure of the first capacitor unit. In some embodiments, the magnetic element may maintain the first failure indicator in the second orientation to indicate the failure of the first capacitor unit.