Modular Impedance Injection Modules for Agile Power Flow Control
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Solution Overview
Problem
Transformerless power flow control systems require complex and customized installations, leading to long planning cycles and difficulties in quick configuration, deployment, and reconfiguration, with a need for agile systems using standardized impedance injection modules for efficient power flow control with minimal disturbance to existing fault monitoring systems.
Innovation Solution
The development of impedance injection modules with wireless communication and control capabilities, allowing for remote configuration and reconfiguration, and deployment in a modular, standardized format that can adjust line reactance efficiently, using identical modules across phases to optimize power flow and support reactive power transmission with minimal impact on line resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If transformerless power flow control systems are deployed with customized installations, then power flow control capability is achieved, but installation complexity and planning cycle duration increase
Solution Approach 1:
The system is divided into identical, standardized impedance injection modules that can be independently deployed. Each module is a self-contained unit with standardized interfaces, allowing complex power flow control to be achieved through simple repetition of identical units rather than custom-designed installations.
Solution Approach 2:
Identical impedance injection modules are designed to be universally applicable across different phases and locations. These standardized modules can perform multiple functions including impedance injection, power flow control, and reactive power compensation, eliminating the need for customized installations for each application.
2Productivity
If standardized impedance injection modules are used, then deployment speed and reconfiguration efficiency improve, but system customization flexibility is reduced
Solution Approach 1:
The standardized modules incorporate dynamic reconfiguration capabilities through electronic control systems. While the physical modules are identical and standardized for quick deployment, their electrical characteristics and control parameters can be dynamically adjusted to provide the necessary customization flexibility for different power flow control requirements.
Solution Approach 2:
The system achieves customization by changing operational parameters rather than physical configurations. Identical modules can be programmed with different impedance values, control algorithms, and operational modes, allowing flexible adaptation to various scenarios without requiring custom hardware designs.
3Adaptability or versatility
If complex customized installations are deployed, then specific power flow control requirements are met, but fault monitoring system integration becomes difficult
Solution Approach 1:
The standardized impedance injection modules are pre-configured with integrated fault monitoring interfaces and communication capabilities before deployment. This preliminary integration of monitoring functions eliminates the need for complex post-installation integration work and simplifies connection to existing fault monitoring systems.
Data Source
AI summary
A modular power flow control system is described for optimizing power flow control in a multi-phase power transmission system. Identical impedance injection modules are arranged in an m×n matrix, where m is the number of series-connected modules inserted into each phase (forming a leg of the installed bank of modules), and n is the number of parallel-connected legs per phase. Each impedance injection module in a phase is configurable to collectively insert a pre-determined (controllable) power control waveform into the phase to which it is attached. The modular flow control system is agile with respect to configurability, reconfigurability, maintenance, size, weight, and cost.