Reactance-Injecting Module Fast Fault Neutralization
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Solution Overview
Problem
Existing power transmission systems face challenges in quickly isolating faults due to communication delays and interference from injected reactance, which can obscure fault localization and hinder rapid neutralization.
Innovation Solution
A reactance-injecting module with high-speed dedicated communication links allows for immediate removal or reduction of injected reactance across phases upon fault detection, using current sensors, controllers, and transceivers to communicate fault information and bypass reactance within 1 millisecond, minimizing interference with fault localization analyses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If reactance is injected into transmission lines for phase balancing or power flow management, then system capacity and power flow optimization are improved, but fault localization accuracy deteriorates due to interference from injected reactance
Solution Approach 1:
The system performs preliminary actions by detecting faults and removing injected reactance before fault localization analysis is performed. The controller monitors transmission line conditions, detects faults, and removes reactance injection in response to fault detection, ensuring that reactance does not interfere with subsequent fault localization measurements.
2Device complexity
If conventional communication systems are used to control reactance modules, then system complexity is reduced, but fault isolation speed deteriorates due to communication delays
Solution Approach 1:
The communication system is segmented into dedicated communication channels for different purposes. One communication channel is specifically allocated for fault detection and reactance removal signaling, separate from channels used for routine reactance control. This segmentation enables faster, prioritized communication for fault isolation without interfering with normal system operations.
Solution Approach 2:
The controller acts as an intermediary between fault detection sensors and reactance modules. Upon detecting a fault, the controller immediately sends removal signals to the reactance modules through dedicated communication links, mediating the rapid response required for fast fault isolation while maintaining simplified module design.
3Stability of the object's composition
If injected reactance is maintained during fault analysis, then phase balancing benefits are preserved, but fault localization becomes obscured and analysis time increases
Solution Approach 1:
The system performs preliminary reactance removal before fault localization analysis begins. The controller detects faults and removes injected reactance in advance, creating optimal conditions for fault analysis before the actual localization process starts, thereby preventing reactance interference from obscuring fault signatures.
Solution Approach 2:
The system operates in periodic cycles: during normal operation, reactance is injected for phase balancing; upon fault detection, reactance is removed for fault analysis; after fault isolation, reactance injection may be restored. This periodic switching between operational modes allows the system to maintain phase balance benefits while enabling accurate fault localization when needed.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables extremely fast neutralization of injected reactance, facilitating rapid fault isolation and maintaining system integrity by ensuring that all reactance is minimized in time to prevent interference with fault localization processes.
Implementation Method 1
The converter creates a signal that is out of phase with the voltage of the power line, and this signal, inductively coupled to the power line, emulates a series reactance.
Implementation Method 2
The current sensor may be configured to sense a current flow in the one phase of the polyphase transmission system.
Data Source
AI summary
Disclosed is a reactance-injecting module and its method of use to balance the currents among the phases of polyphase electric power transmission lines or to manage power flow among alternate paths, where the reactance-injecting module has high-speed, dedicated communication links to enable the immediate removal or reduction of injected reactance from all phases of a phase balancing cluster when a fault is detected on any one of the multiple phases. The reactance-injecting module may communicate information on a detected fault to the other reactance-injecting modules of the phase balancing cluster within 10 microseconds after the fault is detected to allow the phase balancing cluster to eliminate injected reactance from all phases within a time that is short compared to a cycle of the alternating current, such as 1 millisecond after the fault is detected. This provides extremely fast neutralization of injected reactance to minimize interference with fault localization analyses.