Fault-Managed Power Maintenance Mode With Authorized Initiation
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Solution Overview
Problem
Ensuring that maintenance tasks at a physical site receiving fault managed power from a central office can be performed without degrading operations, while maintaining the ability to detect faults to prevent harm to technicians.
Innovation Solution
A power delivery system with a power transmitter and receiver subsystem, user interface, and authorization server that enables controlled maintenance modes, using fault managed power (FMP) transmitters and receivers, short-range wireless interfaces, and authentication/authorization services to manage power delivery and maintenance activities safely.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If maintenance activities are performed at a physical site receiving fault managed power, then maintenance tasks can be completed, but system operations may be degraded and technicians may be exposed to safety hazards
Solution Approach 1:
The system enters a maintenance mode before actual maintenance activities begin. This preliminary action involves transitioning the power delivery system from normal operational state to a controlled maintenance state, where power is maintained at safe levels and fault detection capabilities are preserved. The maintenance mode is initiated through authenticated requests from technician devices, ensuring that safety protocols are established before any maintenance work commences.
2Object-affected harmful factors
If fault detection is maintained during maintenance activities, then technician safety is ensured, but maintenance operations may be constrained
Solution Approach 1:
The system changes operational parameters by entering a maintenance mode that modifies power delivery characteristics. In this mode, the power delivery system maintains power transmission at levels safe for technician contact while preserving fault detection capabilities. The parameter change allows technicians to work on equipment without the full hazard of normal operational power levels, yet the system continues to monitor for faults that could endanger personnel.
3Ease of operation
If maintenance mode is initiated without authorization control, then maintenance access is simplified, but system security and operational integrity are compromised
Solution Approach 1:
The system implements an authorization feedback mechanism where maintenance mode initiation requires authenticated requests from technician devices. The system receives the maintenance request, verifies technician credentials and authorization levels, and only transitions to maintenance mode upon successful authentication. This feedback loop ensures that only authorized personnel can initiate maintenance activities, maintaining system security while enabling necessary maintenance operations.
Data Source
AI summary
Devices, systems, and methods to enable a user to control initiation and execution of a maintenance mode in a power distribution system that includes a power transmitter subsystem that transmits power over a cable to a power receiver subsystem. A maintenance mode associated with the power transmitter subsystem and the power receiver subsystem is initiated. The maintenance mode causes the power transmitter subsystem and power receiver subsystem to enter a power mode to allow for maintenance activity to be performed at the power transmitter subsystem and power receiver subsystem. An authorization server is configured to authorize initiation of the maintenance mode on the power transmitter subsystem and power receiver subsystem.