Cable Sample Stack Encapsulation for High-Voltage Property Testing
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Solution Overview
Problem
Existing methods for analyzing the electrical properties of high-voltage cable materials, particularly conductivity and space charge, are unreliable, especially when high voltages are applied.
Innovation Solution
A test setup comprising a first and second planar electrode with layers of a high-voltage cable sample, where at least one layer is arranged between the electrodes as an inner layer, and outer layers are placed on either side to form a stack, ensuring homogeneous electric field distribution and containment of chemical species.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional measurement methods are used for electrical conductivity and space charge, then the measurement process is simpler, but the measurement reliability deteriorates especially at high voltages
Solution Approach 1:
The patent implements a nested structure where the sample stack is enclosed within an outer layer of the same material. The inner layers containing the electrodes are nested within the outer protective layer, creating a multi-layered configuration that ensures homogeneous electric field distribution and contains chemical species, thereby improving measurement reliability at high voltages
Solution Approach 2:
The outer layer acts as an intermediary material between the measurement system and the environment. This outer layer mediates the electric field distribution and prevents chemical species from escaping, enabling reliable high-voltage measurements without direct exposure to external contaminants or field irregularities
2Measurement precision
If higher voltages are applied for measurement, then the measurement sensitivity improves, but the measurement reliability deteriorates due to field non-uniformity and chemical species escape
Solution Approach 1:
The nested multi-layer structure with electrodes embedded in inner layers and enclosed by an outer layer creates a controlled environment that maintains field uniformity even at high voltages up to 30 kV/mm, preventing breakdown and chemical species escape while enabling high-sensitivity measurements
Solution Approach 2:
The patent changes the physical configuration parameter by introducing the outer layer enclosure, which fundamentally alters the electric field distribution characteristics. This structural parameter change enables the system to withstand higher voltages while maintaining field uniformity and preventing chemical species escape, thus improving both sensitivity and reliability
3Device complexity
If sample layers are exposed during measurement, then the setup complexity is reduced, but chemical species escape and field distribution becomes non-unogeneous
Solution Approach 1:
The patent uses a nested configuration where the inner sample layers with electrodes are enclosed within an outer protective layer of the same material. This nested structure prevents chemical species from escaping while maintaining a homogeneous electric field distribution, ensuring reliable measurements without excessive 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 setup enables reliable measurements of electrical properties, including conductivity and space charge, with the application of higher voltages (up to 30 kV/mm) than conventional methods, ensuring accurate analysis of high-voltage cable materials.
Implementation Method 1
The outer layers are designated as outer layers since they are not between said electrodes... The stack is sandwiched between layers of the sample as outer layers of the sample
Implementation Method 2
a first planar electrode, a second planar electrode... at least one layer of the sample is arranged between the first planar electrode and the second planar electrode
Data Source
AI summary
A test setup includes a first planar electrode, a second planar electrode, and layers of a sample of an electric cable. A test fixture has the test setup. A method is provided for analyzing an electrical property of a sample of an electrical cable using the test fixture.