Tree Topology Power System Device Identification
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Solution Overview
Problem
In power systems with a tree topology, there is a need to identify how devices are connected and how changes in the operation state or parameter of one device affect other devices downstream, which is not efficiently addressed by existing technologies.
Innovation Solution
An apparatus with a processor and memory, connected via a serial bus protocol like PMBus, identifies devices in a tree topology by causing changes in their operation states or parameters, determining related changes, and mapping connections based on these changes, allowing for the identification of most and second most downstream devices and their connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual configuration and monitoring methods are used for power systems, then device connection identification can be achieved, but the process becomes time-consuming and complex
Solution Approach 1:
The power system performs self-identification of device connections and dependencies automatically. The apparatus causes changes in operation states of devices and determines related changes without external intervention, allowing the system to map its own topology and relationships autonomously
Solution Approach 2:
The system pre-establishes the understanding of device interconnections by performing identification operations before actual power management tasks. By determining device relationships in advance through controlled state changes, the system prepares the topology map for subsequent efficient management operations
2Reliability
If comprehensive device monitoring is implemented in complex tree topology power systems, then connection verification improves, but system complexity increases
Solution Approach 1:
The monitoring approach segments the complex tree topology into manageable units by focusing on individual device state changes and their direct downstream effects. Rather than monitoring the entire system simultaneously, the apparatus isolates and tests connections device-by-device through controlled operation state changes
Solution Approach 2:
The system uses parameter changes (operation states) as test vectors to probe device connections. By changing the operation state of one device and observing related changes in downstream devices, the apparatus infers connection relationships without requiring complex monitoring hardware or algorithms
Data Source
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AI summary
An apparatus (21) is provided for a power system (11) with a power input at an upstream end and several power outputs connected to one or more loads (18, 19) in a downstream end, the power system comprising a plurality of devices (13-17, 20) interconnected in a tree topology, and wherein a change of an operation state or parameter of each of the devices causes a related change of an operation state or parameter of other ones of the devices connected to that device downstream thereof. The apparatus is communicatively connected to each of the devices and comprises a processor (22) and a memory (23) storing instructions (24) that, when executed by the processor, causes the apparatus to identify (31) each of the devices interconnected in the tree topology; to cause (32) a change of an operation state or parameter of each of the devices at a time; to determine (33), for each of the devices having an operation state or parameter thereof changed, which of the other devices having a related change of an operation state or parameter thereof, if any; and to identify (34) how the devices are connected in the tree topology based on said determined other devices having a related change of an operation state or parameter thereof, if any, for each of said devices having an operation state or parameter thereof changed.