Modular High Voltage Switchboard with Top-Down MOC Installation
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Solution Overview
Problem
High voltage electric switchboards in existing technologies have functional parts that are not independently modularized, making separate manufacturing and assembly difficult, and require two operators for installation and maintenance, which complicates repairs and increases operational inconvenience.
Innovation Solution
The high voltage electric switchboard is designed with independently modularized functional parts such as bus bar, measurement and supervisory controller, circuit breaker, and potential transformer, allowing each part to have separate surfaces and be easily installed and repaired, with a mechanism operated cell (MOC) switch that can be installed by one operator using a top-to-bottom fixing mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If functional parts are divided and shared by multiple components (related art configuration), then space utilization is improved, but manufacturing complexity and maintenance difficulty increase
Solution Approach 1:
The switchboard is divided into independent functional modules (circuit breaker module, PT module, bus bar module, etc.), each with its own enclosure. These modules can be manufactured separately and assembled together, reducing manufacturing complexity while maintaining compact space utilization through vertical stacking and adjacent placement.
2Device complexity
If functional parts share common surfaces and structures, then device compactness is improved, but ease of repair and replacement deteriorates
Solution Approach 1:
Each functional part is enclosed in its own separate enclosure with independent mounting structures. This allows any single module to be removed, replaced, or repaired without affecting other modules, significantly improving maintenance ease while maintaining compact overall device structure through modular arrangement.
3Stability of the object's composition
If MOC switch is installed from bottom to top through intermediate diaphragm, then structural integration is improved, but installation difficulty and operator requirements increase
Solution Approach 1:
The MOC switch installation is inverted from the conventional bottom-to-top approach. The switch is now installed from the top of the circuit breaker module downward, with the operating lever extending through the intermediate diaphragm opening. This allows a single operator to easily install and access the switch without needing to work from below the diaphragm.
4Volume of stationary object
If working space is minimized in compact switchboard, then device size is reduced, but maintenance accessibility deteriorates
Solution Approach 1:
The compact switchboard maintains minimal overall volume through vertical stacking of modules, but each module has independent enclosures with accessible openings. This segmentation allows maintenance personnel to access specific modules without needing to enter the compact internal space, preserving ease of repair while maintaining small device footprint.
Data Source
AI summary
A high voltage electric switchboard in which manufacturing productivity is greatly improved and each functional part can be easily replaced and repaired is provided. In the high voltage electric switchboard, a plurality of functional parts including a bus bar part, a measurement and supervisory controller, a circuit breaker part, a wire part, and potential transformer part are independently modularized such that the functional parts do not have a shared surface with each other and at least two outer surfaces of an enclosure of each of the modularized functional parts are installed to be in contact with an outer surface of an enclosure of another functional part adjacent in a horizontal direction or a vertical direction.