Plug Socket Current Transformer Sensor Integration
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Solution Overview
Problem
The existing apparatus for connecting electrical devices to high-voltage power grids with leadthrough plug-in bushings complicates the assembly and maintenance of current sensors due to their deep placement within the tank, making them difficult to access and service.
Innovation Solution
Integrating a current sensor directly into the leadthrough plug-in bushing's receiving section, which is easily accessible from the outside, allowing for quick detachment and replacement, and using a compact design that avoids complex assembly and reduces costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the current sensor is arranged deep inside the tank interior in the connection region between the leadthrough plug-in bushing and the winding, then the current detection function is achieved, but the assembly and maintenance complexity increases and accessibility is reduced
Solution Approach 1:
The current sensor is extracted from its traditional location deep inside the tank interior and relocated to the receiving section of the leadthrough plug-in bushing, which is accessible from outside the tank. This extraction resolves the contradiction by maintaining the current detection function while significantly improving accessibility for assembly and maintenance operations.
Solution Approach 2:
The receiving section of the leadthrough plug-in bushing serves as an intermediary structure that hosts the current sensor in an accessible location while still enabling current detection in the electrical connection region. This intermediary placement allows the sensor to be easily accessible from outside the tank while maintaining its functional relationship with the electrical connections.
2Reliability
If the current sensor is arranged deep inside the tank interior, then the current detection function is achieved, but the assembly time and cost increase
Solution Approach 1:
By extracting the current sensor from the deep tank interior location and placing it in the accessible receiving section, the assembly process is simplified and can be completed more quickly without requiring complex internal tank operations, thereby reducing assembly time and cost while maintaining the current detection function.
Solution Approach 2:
The current sensor is integrated into the receiving section of the leadthrough plug-in bushing during manufacturing, so that it is already in position and ready for connection when the bushing is installed. This preliminary integration eliminates the need for time-consuming internal sensor installation procedures.
3Reliability
If the current sensor is arranged deep inside the tank interior, then the current detection function is achieved, but the device complexity increases
Solution Approach 1:
The current sensor is merged with the receiving section of the leadthrough plug-in bushing, combining two previously separate components (the sensor and the bushing) into a single integrated assembly. This merging reduces the overall device complexity by eliminating the need for separate sensor mounting structures and simplifying the assembly configuration.
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
Facilitates simple and cost-effective assembly and maintenance of current sensors, reducing assembly time and costs by allowing easy access and replacement, while maintaining dielectric strength and avoiding high electrical field exposure.
Implementation Method 1
a current sensor (13) which is designed to detect an electric current flowing across the metallic contact part (6)
Implementation Method 2
a tank (18) which is filled with an insulating fluid and in which the core and each winding are arranged
Data Source
AI summary
An apparatus for connecting an electrical device to a high-voltage power grid with a leadthrough plug-in bushing which has a hollow receiving section which extends in a plug-in direction and is composed of an electrically nonconductive insulating material, wherein a metallic contact part is arranged on a closed end region of the receiving section, which metallic contact part extends through the insulating material of the receiving section or lengthens said receiving section in the direction of the closed end region. The apparatus can be assembled and serviced in a simple, quick and therefore cost-effective manner. The receiving section is equipped with a current sensor which is designed to detect an electric current flowing across the metallic contact part.