Insulation Oil Composite for High-Voltage Thermal Expansion Control
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Solution Overview
Problem
The challenge in high voltage power equipment is to mitigate the thermal expansion of liquid insulation oil while maintaining dielectric strength in a cost-effective manner, as existing solutions like bellows increase costs and replacing proven insulation oils is difficult due to their reliability and technical requirements.
Innovation Solution
Incorporating polymer particles with a lower thermal expansion coefficient, such as polyethylene, polypropylene, or polystyrene, into the insulation oil to reduce expansion and maintain dielectric performance, thereby reducing the volume of insulation oil needed and overall costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bellows are used to accommodate thermal expansion of insulation oil, then the insulation structure is protected from damage, but the overall cost of the power equipment increases
Solution Approach 1:
The invention changes the physical parameter of the insulation medium by mixing polymer particles with insulation oil. This creates a composite insulation medium with different thermal expansion characteristics than pure insulation oil, thereby reducing the need for expansion accommodation structures like bellows and lowering overall device complexity and cost.
Solution Approach 2:
The invention uses a composite material system consisting of insulation oil mixed with polymer particles. This composite insulation medium combines the dielectric properties of insulation oil with the low thermal expansion properties of polymer particles, achieving both electrical insulation and thermal expansion mitigation in a single medium.
2Object-affected harmful factors
If insulation oil with lower thermal expansion coefficient is used, then thermal expansion is reduced, but it is costly and hard to balance other technical requirements
Solution Approach 1:
Rather than replacing the entire insulation oil with an expensive alternative, the invention modifies the existing insulation oil by adding polymer particles. This changes the thermal expansion parameter of the insulation medium while maintaining compatibility with existing technical requirements and avoiding the high costs associated with alternative insulation oils.
Solution Approach 2:
The invention uses inexpensive polymer particles as additives to modify the insulation oil. These polymer particles are low-cost materials that provide the desired thermal expansion reduction without requiring expensive insulation oil replacements, making the solution economically viable.
3Object-affected harmful factors
If polymer particles are added to insulation oil, then thermal expansion is reduced and dielectric performance is enhanced, but the structure becomes more complex
Solution Approach 1:
The invention creates a composite insulation medium by combining insulation oil with polymer particles. This composite approach achieves multiple functions (thermal expansion reduction and dielectric enhancement) within the insulation medium itself, avoiding the need for additional separate components or structures.
Solution Approach 2:
The polymer particles serve multiple functions simultaneously: they reduce thermal expansion of the insulation medium and enhance dielectric performance. This multi-functionality is achieved within the insulation medium composition itself, avoiding the need for separate components and thereby not increasing overall device 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 effectively reduces the expansion of the insulation medium, enhances dielectric performance, and maintains electrical stress control without increasing the existing structure's complexity or cost, ensuring the reliability and safety of high voltage equipment.
Implementation Method 1
polymer particles with a lower thermal expansion coefficient than the insulation oil
Implementation Method 2
the liquid insulation oil may provide enhanced dielectric strength for the power equipment
Data Source
AI summary
Embodiments of the present disclosure relate to a power equipment and method for providing the same. Embodiments of the present disclosure relate to a power equipment. The power equipment includes a high voltage part, a low voltage part, and an insulation oil adapted to impregnate the high voltage part and insulate the high voltage part from the low voltage part. The insulation oil is partially filled with polymer particles with a lower thermal expansion coefficient than the insulation oil. According to embodiments of the present disclosure, the degree of expansion of the insulation medium can be reduced in a cost-effective way.