Fiber Optic Pressure Sensor for Transformer Tank Ballistic Impact Detection
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Solution Overview
Problem
Existing transformer systems are unable to detect ballistic impacts and prevent dielectric fluid loss effectively, necessitating a solution for monitoring pressure changes within transformer tanks.
Innovation Solution
A transformer system incorporating a fiber optic sensor, such as a fiber Bragg grating or Fabry-Perot cavity sensor, submerged in dielectric fluid within the transformer tank, which communicates pressure changes to a controller for determining ballistic impacts and preventing fluid loss through hardened tank components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional pressure measurement systems are used in transformer tanks, then the system structure remains simple, but the system cannot detect ballistic impacts and prevent dielectric fluid loss effectively
Solution Approach 1:
The patent replaces traditional mechanical pressure measurement systems with fiber optic sensing technology. The fiber optic sensor detects pressure changes through optical properties (refractive index, light intensity) rather than mechanical contact, enabling ballistic impact detection while maintaining system simplicity. The sensor measures dielectric fluid pressure changes caused by ballistic impacts without requiring complex mechanical components.
Solution Approach 2:
The patent introduces dielectric fluid as an intermediary medium between the ballistic impact and the fiber optic sensor. The fluid transmits pressure waves from impacts to the sensor, enabling indirect detection that enhances reliability while keeping the sensor isolated from direct mechanical stress and chemical exposure.
2Measurement precision
If fiber optic pressure sensors are deployed in dielectric fluid, then ballistic impacts can be detected accurately, but the sensor may be exposed to chemical degradation
Solution Approach 1:
The dielectric fluid serves as an intermediary that transmits pressure information to the fiber optic sensor without requiring direct chemical contact. The sensor measures pressure through optical properties of the fluid, maintaining measurement precision while the fluid's dielectric properties protect the sensor from chemical degradation.
Solution Approach 2:
The fiber optic sensor replaces mechanical pressure sensors that would require direct physical contact with the dielectric fluid. By using optical fields instead of mechanical contact, the system achieves accurate pressure measurement while eliminating chemical compatibility issues between the sensor and dielectric fluid.
3Loss of substance
If the transformer tank is hardened to prevent ballistic impact damage, then dielectric fluid loss is reduced, but the cost and manufacturing complexity increase
Solution Approach 1:
The system performs preliminary detection of ballistic impacts through pressure sensing before significant dielectric fluid loss occurs. The fiber optic sensor detects pressure changes from impacts, enabling early warning that allows preventive action to be taken, reducing overall fluid loss without requiring extensive hardening of the tank structure.
Solution Approach 2:
The patent implements a feedback system where pressure sensor data is continuously monitored and analyzed to detect ballistic impacts. This feedback loop enables real-time detection and response to impacts, allowing the system to minimize dielectric fluid loss through timely intervention rather than relying solely on passive tank hardening.
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 system effectively detects ballistic impacts and prevents dielectric fluid loss by accurately measuring pressure changes, enabling timely notification and minimizing damage to the transformer system.
Implementation Method 1
A transformer system incorporating a fiber optic sensor, such as a fiber Bragg grating or Fabry-Perot cavity sensor
Implementation Method 2
A transformer system incorporating a fiber optic sensor, such as a fiber Bragg grating or Fabry-Perot cavity sensor
Data Source
AI summary
A transformer system includes a transformer and a transformer tank. The transformer tank houses the transformer in a bath of a dielectric fluid. The transformer system also includes a controller, and a fiber optic pressure sensor communicatively coupled to the controller. The fiber optic sensor is disposed in the dielectric fluid and operative to provide an output that varies with the pressure of the dielectric fluid. The controller is operative to determine the pressure of the dielectric fluid based on the output of the fiber optic pressure sensor.