Ring Bus Shared Resource Electrical System for Mission Critical Power
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Solution Overview
Problem
Construction projects in Mission Critical Facilities face challenges in efficiently distributing AC electrical power due to the need for large current-carrying electrical components, where not all components are initially required, leading to inefficiencies and potential power outages in critical and essential loads.
Innovation Solution
A ring bus Shared Resource electrical System (SRS) with dual ring buses and modular power distribution platforms, featuring essential and critical switchboard cabinets, static uninterruptable power supplies, and isolation circuit breakers, allowing for power sharing and redundancy to ensure continuous power supply to critical loads and flexibility in adding or removing components without affecting operational loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If large current-carrying electrical components are used to distribute AC electrical power in Mission Critical Facilities, then power distribution capacity is sufficient, but system complexity and cost increase
Solution Approach 1:
The electrical distribution system is divided into multiple modular platforms, each with its own switchboard cabinets and circuit breakers. These modules can be independently configured and connected to the ring bus, allowing the system to scale with actual power needs rather than requiring full capacity from the start.
Solution Approach 2:
The ring bus architecture provides universal connectivity where any switchboard cabinet can potentially supply power to any electrical load through multiple paths. This multi-functional capability allows the same infrastructure to serve both essential and critical loads while providing redundancy without requiring separate dedicated components for each function.
2Reliability
If all electrical components are installed at the beginning to ensure power availability, then power supply reliability is maximized, but initial cost and resource usage increase
Solution Approach 1:
The system is designed to be dynamically configurable, allowing electrical components and loads to be added, removed, or reconfigured without shutting down the entire system. The ring bus architecture enables hot-swapping of modules and reconfiguration of power paths while maintaining continuous power supply to operational loads.
Solution Approach 2:
The ring bus infrastructure is pre-established with connection points and switching capabilities in place, allowing electrical components and loads to be seamlessly integrated as needed. The preliminary setup of the distributed architecture enables future expansion without requiring complete system redesign or installation of excess components upfront.
3Productivity
If electrical components are removed or added later to match actual needs, then cost efficiency improves, but power outage risk increases
Solution Approach 1:
The ring bus serves as an intermediary power distribution network that provides alternative power paths between switchboard cabinets and electrical loads. When components are added or removed, the ring bus topology allows power to be rerouted through intermediate connection points, maintaining continuous supply to operational loads during reconfiguration.
Solution Approach 2:
The system incorporates built-in redundancy through the ring bus architecture, where multiple power paths are available before any failure or reconfiguration event occurs. This preliminary cushioning of capacity and alternative routes ensures that when components are modified, the system can absorb the changes without causing power outages to critical loads.
4Reliability
If redundant power distribution paths are implemented to prevent outages, then power supply reliability improves, but device complexity increases
Solution Approach 1:
Multiple power distribution functions are merged into a single ring bus architecture that provides redundant paths inherently through its topology. Rather than implementing separate redundant systems, the ring bus combines multiple power paths, switching capabilities, and load distribution functions into one integrated structure, reducing overall complexity while maintaining reliability.
Data Source
AI summary
A ring bus Shared Resource electrical System (SRS) has at least an essential electrical power ring bus and a critical electrical power ring bus as well as multiple SRS electrical power distribution platforms. Each SRS distribution platform includes one or more interconnected essential switchboards and two or more interconnected critical switchboards. Each essential switchboard is coupled through the essential electrical power ring bus to essential switchboards of two other SRS distribution platforms, and each critical switchboard is coupled through the critical electrical power ring bus to critical switchboards of two other SRS distribution platforms. Each SRS distribution platform directs power to one nominal load group and as well is configured to distribute power to a load group nominally supplied by another SRS distribution platform. One or more controller in each SRS distribution platform synchronizes the output voltage of SRS distribution platforms.