Power Distribution Subrack Layout with Shared Breaker Controllers
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Solution Overview
Problem
Existing power distribution subracks waste space and increase material costs due to redundant controllers when handling circuit breakers with different specifications, as each breaker requires its own controller, leading to idle controllers and inefficient utilization.
Innovation Solution
The power distribution subrack design connects second ends of at least two connection terminals to a single controller, allowing shared control of multiple circuit breakers, reducing the number of controllers needed and optimizing space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each circuit breaker is controlled by a separate controller, then the control reliability is improved, but the device complexity and material costs increase due to redundant controllers
Solution Approach 1:
Multiple connection terminals that were previously each connected to separate controllers are now merged and connected to a single controller. The controller receives status signals from multiple circuit breakers through different connection terminals and can control each breaker independently, eliminating the need for redundant controllers while maintaining control reliability
Solution Approach 2:
A single controller is designed to perform multiple functions by receiving status signals from multiple different connection terminals and sending control signals to multiple different circuit breakers. This multi-functional controller replaces what would have been multiple single-function controllers, reducing device complexity while maintaining the ability to reliably control each breaker
2Reliability
If each circuit breaker is controlled by a separate controller, then the control precision is improved, but the loss of substance increases due to wasted controller components
Solution Approach 1:
Controllers that would have been individually assigned to each connection terminal are merged into a single shared controller. This controller serves multiple connection terminals and multiple circuit breakers simultaneously, eliminating the waste of controller components and materials while maintaining precise control over each breaker through dedicated signal paths
3Device complexity
If multiple connection terminals are connected to the same controller, then the device complexity is reduced, but the difficulty of detecting and measuring increases
Solution Approach 1:
The connection terminals are segmented and assigned to different basic units or zones on the collection board. Each connection terminal maintains a clear spatial correspondence with its associated circuit breaker location. This segmentation approach, combined with a shared controller, simplifies the overall device structure while keeping signal routing traceable and manageable through the spatial organization of components
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
This application discloses a power distribution subrack and power distribution equipment, and relates to the field of circuit technologies. The power distribution subrack includes a subrack body and a collection board, the collection board is disposed inside the subrack body, and the collection board includes a plurality of connection terminals and a plurality of controllers. Second ends of at least two of the plurality of connection terminals are connected to a same controller. First ends of at least some of the plurality of connection terminals are plug-connected to jacks of one or more circuit breakers, and the at least some connection terminals are in a one-to-one correspondence with the one or more circuit breakers. Each of the at least some connection terminals obtains a status signal of a corresponding circuit breaker, and transmits the status signal to a corresponding controller. The controller sends, based on the status signal and by using the corresponding connection terminal, a control signal to the circuit breaker corresponding to the status signal, where the control signal is used to controls connection and disconnection of the circuit breaker corresponding to the status signal. Based on the solution, a quantity of controllers on the collection board is reduced, and material costs of the collection board are reduced.