DC Power Distribution Architecture With Sector Isolation
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Solution Overview
Problem
Power distribution systems in facilities like data centers face challenges in achieving high reliability, efficiency, and cost reduction while managing varying power demands and ensuring high availability, with existing systems often requiring complex synchronization and high short-circuit current ratings.
Innovation Solution
A DC power distribution system with a modular, scalable architecture that includes sector power sources, sector distribution buses, and sector isolation switches, allowing for flexible power distribution and seamless integration of multiple power sources, with a control system to monitor and isolate faults, and enable power sharing between sectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional power distribution system is used, then power can be distributed across facilities, but the system requires complex synchronization and high short-circuit current ratings, increasing device complexity and cost
Solution Approach 1:
The power distribution system is divided into multiple independent DC sectors, each with its own power sources and distribution buses. This segmentation eliminates the need for complex synchronization between sectors while maintaining reliable power distribution across the entire facility. Each sector operates autonomously and can be independently managed.
2Reliability
If a traditional power distribution system is used, then power can be distributed across facilities, but the installation cost and device complexity increase
Solution Approach 1:
The system is segmented into standardized DC sectors that can be independently installed and scaled. This modular approach reduces installation costs by allowing incremental deployment and avoiding the need for complex centralized synchronization equipment.
Solution Approach 2:
The system transitions from traditional AC power distribution to DC power distribution, changing the fundamental electrical parameter. This parameter change eliminates the need for complex synchronization and reduces installation complexity while maintaining reliable power delivery.
3Reliability
If sector isolation switches are added to isolate faults, then system reliability improves, but device complexity increases
Solution Approach 1:
The system uses segmented DC sectors with isolation switches at sector boundaries. This segmentation enables simple fault isolation by opening switches between sectors, containing faults to individual sectors without affecting the rest of the system. The isolation mechanism is simplified by the modular sector structure.
4Reliability
If loads are coupled to multiple sector distribution buses, then power availability improves, but the system complexity increases
Solution Approach 1:
Loads can be connected to multiple DC sector buses, and the modular sector structure simplifies these multi-connection arrangements. Each sector operates independently, making it straightforward to configure loads across sector boundaries without complex coordination, thereby improving power availability through redundant paths.
Data Source
AI summary
This specification describes direct current (DC) power distribution systems. One of the systems includes a DC power distribution bus that includes a plurality of sector distribution buses. Each sector distribution bus is coupled to a respective sector power source. A plurality of sector isolation switches are coupled between the sector distribution buses and configured to individually isolate each sector distribution bus from the DC power distribution bus. At least one load is coupled to at least two different sector distribution buses of the DC power distribution bus.