Phase Balancing Power Transmission Systems Using Reactance Modules
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Solution Overview
Problem
Power transmission systems often experience phase imbalances due to uneven loads, currents, and impedances across different phases, which existing methods struggle to effectively balance, leading to inefficiencies and potential errors in power flow.
Innovation Solution
The implementation of a method involving line-mounted reactance modules that can inject inductance or capacitance into power lines, switching between bypass and injection modes to adjust current flow, using phase balancing protocols that rank power lines by current flow and switch devices to achieve balanced conditions between adjacent lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If physical transposition of power lines is used to reduce phase imbalances, then phase balance between lines is improved, but system complexity and operational disruption increase
Solution Approach 1:
The patent replaces the mechanical transposition of power lines with an electrical solution using reactance modules that inject inductance or capacitance into the lines. This substitution eliminates the need for physical line reconfiguration while achieving the same phase balancing objective, thereby reducing system complexity and operational disruption.
Solution Approach 2:
The patent introduces reactance modules as intermediary devices mounted on power lines to inject reactive compensation. These modules act as mediators that adjust phase relationships without requiring physical transposition of the lines themselves, thus maintaining system simplicity while improving phase balance.
2Manufacturing precision
If reactance modules are mounted on each power line to adjust current flow, then phase balancing precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent divides the phase balancing function into separate reactance modules that can be independently mounted on individual power lines. Each module operates autonomously to adjust current flow on its specific line, enabling precise phase balancing while allowing for modular deployment that manages overall system complexity.
Solution Approach 2:
The reactance modules are designed with switching capability to dynamically adjust between different reactance values or operational states. This dynamic adjustment allows precise control of current flow on each line while using standardized modular hardware, balancing precision requirements with device complexity management.
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
This approach effectively balances current flow across power transmission lines, reducing phase imbalances and improving the efficiency and stability of power transmission by dynamically adjusting reactance to match current demands.
Implementation Method 1
A reactance module may be configured to selectively inject reactance (e.g., inductance, capacitance) into a power line on which the reactance module is mounted
Implementation Method 2
A reactance module may be configured to selectively inject reactance (e.g., inductance, capacitance) into a power line on which the reactance module is mounted
Data Source
AI summary
Phase balancing techniques for power transmission systems are disclosed. In one embodiment, a phase balancing protocol (240) includes executing a first phase balancing protocol (350) in relation to a first power transmission section (400a). A second phase balancing protocol (370) may be executed if the first phase balancing protocol (350) is unable to provide a phase balanced condition. The first phase balancing protocol (350) may utilize a first ordering sequence (364) to rank the current flow on the power lines (16) of the first power transmission section (400a), while the second phase balancing protocol (370) may utilize a second ordering sequence (384) to rank the current flow on the power lines (16) of the first power transmission section (400a). The order sequences (364, 384) are opposite of each other—one ranks the current flows from high-to-low, and the other ranks the current flow from low-to-high.