GIS Gas Tank Leak Detection Using Internal Temperature Prediction
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Solution Overview
Problem
Gas Insulated Switchgear (GIS) systems face challenges in accurately detecting gas leaks due to the deterioration of gas tank tightness over time, which can lead to increased risks as the insulating gas pressure drops, making it difficult to reliably determine if a leak is occurring based on the tank body's temperature and pressure readings.
Innovation Solution
A method involving the collection of gas pressure and tank body temperature at multiple time points, calculation of internal average temperature using the ideal gas equation, and fitting additional characteristic quantities such as temperature rise rates to predict the internal average temperature, allowing for accurate detection of gas leaks by converting real-time temperature rise into internal average temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If gas pressure and tank body temperature are monitored directly, then gas leak detection is simplified, but measurement precision deteriorates because tank body temperature does not accurately reflect internal gas temperature
Solution Approach 1:
The patent introduces an intermediary computational model that uses the ideal gas law to calculate internal gas temperature from measurable parameters (pressure and tank body temperature). This mediator translates easily obtainable external measurements into accurate internal gas conditions without requiring direct internal temperature sensing, thus resolving the contradiction between measurement accuracy and system complexity.
Solution Approach 2:
The patent replaces the mechanical/physical approach of directly measuring internal gas temperature with a computational/algorithmic approach. By using the ideal gas equation and fitting additional characteristic quantities, the system computationally derives internal temperature from external measurements, substituting a complex physical measurement system with a simpler computational model.
2Measurement precision
If additional characteristic quantities and fitting models are used to predict internal average temperature, then gas leak detection accuracy is improved, but device complexity increases
Solution Approach 1:
The patent transforms the problem by changing parameters from directly measuring internal temperature to using multiple external parameters (pressure, tank body temperature, and additional characteristic quantities) combined through fitting models. This parameter transformation allows accurate internal state prediction through computational relationships rather than direct measurement, balancing accuracy requirements with practical system complexity.
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
This approach enables accurate and effective detection of gas leaks in GIS by providing a more reliable representation of the internal tank conditions, improving the ability to identify leaks before they pose risks to the system.
Implementation Method 1
determining, for each of the plurality of time points, an internal average temperature of the gas tank based on the gas pressure and an ideal gas equation
Data Source
AI summary
A method, an apparatus, a computer readable media, and a computer program product for detecting a gas leak of a gas tank. The method includes obtaining a gas pressure within the gas tank and a temperature of a tank body of the gas tank; determining an internal average temperature of the gas tank based on the gas pressure; determining a temperature rise of the tank body relative to an ambient temperature; and determining at least one additional characteristic quantity associated with the temperature rise of the tank body. A gas leak of the gas tank can be detected by using the internal average temperature of the gas tank, the temperature rise of the tank body, and the at least one additional characteristic quantity to obtain a predicted relationship between the internal average temperature of the gas tank and the temperature rise of the tank body.