Switching Module Pressing Device for Reactive Power Compensation
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Solution Overview
Problem
Current reactive power compensation systems, such as SVCs, face challenges in optimal switch assembly design and efficient switch replacement due to the bulkiness and handling difficulties of thyristors, which affect power system stability and efficiency.
Innovation Solution
A method and device for replacing switches in a switching module with a pressing device that separates cooling plates and allows for easy insertion and removal of switches, optimizing the arrangement and facilitating heat dissipation, using a system of pressing members and guide rods to manage the vertical stacking of switches and cooling plates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If thyristors are connected in series to control high voltage and current, then the power control capability is improved, but the weight and volume of the switching module increase significantly
Solution Approach 1:
The switching module is divided into multiple independent switch assemblies, each handling a portion of the total voltage and current. This segmentation allows the system to achieve high power control capability while each individual module remains manageable in weight and size, facilitating modular construction and maintenance of the SVC system.
2Power
If multiple thyristors are connected in series, then the voltage control capability is improved, but the handling and assembly difficulty increase
Solution Approach 1:
The series-connected thyristors are grouped into discrete switch assemblies that can be independently handled and installed. This segmentation transforms the complex task of installing multiple individual thyristors into manageable assembly-level operations, significantly improving handling and assembly ease while preserving the voltage control capability.
Solution Approach 2:
The switch assembly采用嵌套结构，将多个 thyristor 封装在统一的绝缘外壳内，形成紧凑的模块化单元。这种嵌套设计使得复杂的串联 thyristor 组变得易于搬运和安装，同时保持了高电压控制能力。
3Ease of repair
If switches are replaced in traditional switch assemblies, then the damaged switch can be repaired, but the replacement process is time-consuming and complex
Solution Approach 1:
The switch assembly is designed as an independent modular unit with standardized connection interfaces. This segmentation allows the entire switch assembly to be quickly removed and replaced as a single unit, or individual switches within the assembly to be accessed and replaced efficiently, significantly reducing repair time and complexity compared to traditional integrated designs.
4Area of stationary object
If cooling plates are stacked vertically to reduce area occupation, then the space efficiency is improved, but the heat dissipation efficiency decreases
Solution Approach 1:
The cooling plate design incorporates locally optimized thermal conduction paths and heat sink structures at critical heat generation points. This local quality enhancement ensures efficient heat dissipation from high-density switch assemblies while maintaining the compact vertical stacking arrangement, thus preserving both space efficiency and heat dissipation performance.
Data Source
AI summary
A switching module may include a plurality of cooling plates stacked along a vertical direction, a switch disposed between the cooling plates, a first supporting member disposed below the lowermost cooling plate, a second supporting member disposed above the uppermost cooling plate, first and second pressing support portions disposed between the lowermost cooling plate and the first supporting member, and a pressing member disposed between the uppermost cooling plate and the second supporting member.