Tower-Mounted Gas-Insulated Switchgear for Compact Substations
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Solution Overview
Problem
Traditional high voltage substations require multiple structurally independent components, leading to complex maintenance, increased dimensions, and high installation and environmental costs, as well as the need for land occupation and approval from local authorities.
Innovation Solution
A tower-mounted high voltage gas-insulated switchgear with a supporting structure connected to a transmission tower, featuring combined interruption and disconnection modules with gas-tight casings and integrated circuit breaker units, allowing for compact installation and remote monitoring, thus minimizing land occupation and regulatory requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional structurally independent components are used in high voltage substations, then each component can perform its dedicated function, but the overall dimensions and installation complexity increase significantly
Solution Approach 1:
The patent combines multiple previously independent components (disconnectors, circuit breakers, earthing switches, and control systems) into a single integrated gas-insulated switchgear unit. This merging eliminates the need for separate structural components while maintaining all dedicated functions, thereby reducing installation complexity and overall dimensions without compromising reliability
Solution Approach 2:
The integrated switchgear unit performs multiple functions simultaneously - circuit breaking, disconnecting, earthing, and control operations - within a single unified structure. This multi-functionality approach allows the system to replace several dedicated components with one universal unit, reducing the number of connections and structural elements required
2Ease of repair
If multiple independent components are used in high voltage substations, then each component can be maintained separately, but the overall maintenance requirements and costs increase
Solution Approach 1:
By integrating multiple components into a single gas-insulated unit with a unified structure and common gas filling, the patent reduces the number of separate maintenance operations required. The integrated design allows for centralized monitoring and maintenance of all functions through a single access point, eliminating the need to maintain multiple separate components
3Reliability
If traditional high voltage substations are constructed with multiple components, then adequate functionality is achieved, but land occupation and environmental impact increase
Solution Approach 1:
The patent integrates all necessary high voltage functions into a single compact gas-insulated switchgear unit that can be mounted on existing transmission towers. This eliminates the need for separate ground-level component installations and associated land occupation, while maintaining full substation functionality through the integrated design
Solution Approach 2:
The invention transitions from traditional ground-level horizontal expansion of substation components to vertical mounting on transmission towers. By utilizing the vertical dimension and existing tower structure, the system achieves full functionality without requiring additional land occupation or environmental disruption
4Reliability
If traditional high voltage substations are constructed, then required functionality is achieved, but approval processes from local authorities and installation time increase
Solution Approach 1:
The integrated switchgear unit consolidates all necessary high voltage functions into a single pre-fabricated module that can be installed as one unit rather than assembling multiple separate components. This reduces installation time and minimizes the need for multiple approval processes, as the integrated unit represents a single installation project rather than multiple separate component installations
Data Source
AI summary
A tower mounted high voltage gas-insulated switchgear including a supporting structure connected to the lattice structure of a high voltage transmission tower, a first and a second combined interruption and disconnection modules respectively including for each phase, a first and a second combined interruption and disconnection units, a first combined disconnecting and earthing switch having a first fixed contact operatively coupled to said first terminal, a second fixed contact at ground potential and a first movable contact operatively couplable to said first and second fixed contacts for disconnecting and earthing operations; a fast earthing switch interposed between said first fixed contact and said first terminal, a circuit breaker unit electrically connected to said first movable contact of said first combined disconnecting and earthing switch and to a second combined disconnecting and earthing switch.