AC Fault-Managed Power Transfer With Continuous Flow Detection
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Solution Overview
Problem
Existing Class 4 power systems face challenges in efficiently managing fault conditions over long distances without voltage rectification, ensuring safety, and adapting to various system topologies and load configurations.
Innovation Solution
A fault managed power system (FMPS) using AC power that includes fault detection, direct power class conversion, and an RF communication layer, enabling continuous AC flow, adaptive voltage levels, and comprehensive fault management, including safety checks and self-diagnosis tests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voltage rectification or chopping is implemented in Class 4 power systems, then fault management capability is improved, but system complexity and energy loss increase
Solution Approach 1:
The patent extracts and removes the voltage rectification and chopping functions from the Class 4 power system, maintaining continuous AC flow instead. This eliminates the need for complex rectifier circuits and voltage regulation stages, reducing system complexity while preserving fault management through alternative means such as monitoring and protection relays.
Solution Approach 2:
The patent implements continuous AC power flow without interruption or conversion to DC, eliminating the stop-start nature of rectification processes. This continuous operation reduces energy losses associated with switching and conversion, while fault management is achieved through continuous monitoring of AC parameters and rapid protection mechanisms.
2Loss of energy
If continuous AC flow is maintained without voltage rectification, then energy efficiency is improved, but fault detection and management becomes more difficult
Solution Approach 1:
The patent replaces physical voltage conversion mechanisms with electronic monitoring and measurement systems. Advanced sensors and signal processing techniques are used to detect faults in continuous AC flow, substituting mechanical rectification with electronic detection methods that maintain energy efficiency while enabling precise fault identification.
Solution Approach 2:
The patent implements continuous feedback monitoring of AC voltage, current, and power parameters. Real-time measurement and control systems provide immediate detection of abnormal conditions, enabling fault management in continuous AC flow without the energy losses associated with voltage rectification and chopping.
3Measurement precision
If high-voltage switches are disconnected for fault detection, then measurement precision is improved, but productivity and system availability decrease
Solution Approach 1:
The patent implements periodic sampling and monitoring of AC parameters at specific intervals and phases. By taking measurements at optimal points in the AC cycle and using non-intrusive monitoring techniques, the system achieves high measurement precision without requiring complete disconnection of high-voltage switches, thus maintaining system availability.
Solution Approach 2:
The patent introduces intermediary measurement devices and isolation transformers that enable fault detection without direct disconnection of high-voltage switches. These intermediaries provide safe access to measurement points while maintaining continuous power flow, achieving both measurement precision and system availability.
Data Source
AI summary
A high voltage AC power fault managed power system is provided that includes accurate fault detection. The high voltage AC power fault managed power system includes a transmitter device and a receiver device that are coupled via a transmission line. The transmitter device and the receiver device obtain status information by monitoring a voltage or current on the transmission line, and share the detected status information with each other. High voltage power may continue to be transmitted through the transmission line when safety conditions are met based on the communication of status information between the transmitter device and the receiver device.