Modular Interconnection Assembly for Distributed Feeder Control
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Solution Overview
Problem
Conventional electrical network systems are inconvenient to configure and suffer from instability, particularly due to the need for specific network configurations and the risk of complete breakdown if the global controlling center fails.
Innovation Solution
The introduction of modular interconnection devices (MIDs) with local controllers, which include a modular port assembly, a node, a converter, and switches, allowing for flexible interconnection and operation of feeders in the electrical network, even in the absence of a global controlling center.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electrical network systems use a global controlling center to monitor and control electricity distribution, then centralized control and coordination are achieved, but the system becomes vulnerable to complete breakdown if the controlling center fails and requires specific network configurations
Solution Approach 1:
The patent divides the centralized control system into distributed modular interconnection devices (MIDs), each with its own local controller. Each MID independently manages its own feeder and can autonomously make control decisions, eliminating the single point of failure at the global controlling center while maintaining coordinated operation across the network.
Solution Approach 2:
The system dynamically adapts its control architecture by allowing MIDs to operate autonomously when the global controlling center is unavailable. The local controllers can independently adjust power flow, switch configurations, and coordinate with neighboring MIDs, providing flexible operation under varying system conditions without requiring fixed network configurations.
2Adaptability or versatility
If conventional systems rely on specific configuration of electrical network and devices for feeder addition or replacement, then control and monitoring are simplified, but the system becomes inconvenient to configure and less flexible
Solution Approach 1:
The modular interconnection device is designed as a universal component that can perform multiple functions: it can connect feeders to the network, convert between AC and DC power, provide local control, and interface with both the global controlling center and neighboring MIDs. This multi-functional design eliminates the need for specific network configurations when adding or replacing feeders, as the same MID module handles all these tasks.
Solution Approach 2:
Each MID equipped with a local controller can autonomously perform configuration and operation tasks without requiring specific pre-arranged network settings. The local controller independently manages power conversion, switching operations, and coordination with the global controlling center or neighboring MIDs, making the system easy to configure and highly adaptable to changing requirements.
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
The modular interconnection device system facilitates easy configuration and enhances the reliability of the electrical network by allowing local control and flexible operation, reducing the risk of complete system failure.
Implementation Method 1
The converter is configured to convert the AC current into DC current or convert DC current into AC current
Data Source
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AI summary
Embodiments of present disclosure relates to a modular interconnection device (MID) and an electrical network system. The MID comprises a modular port assembly, a node, a converter and a local controller. The modular port assembly is configured to transmit alternating current and/or direct current. The node is coupled to an AC source via a first switch and the modular port assembly. The first switch is configured to selectively disconnect the modular interconnection device from the AC source. The converter is coupled to the node via a second switch and coupled to a DC source via a third switch. The converter is configured to convert the AC current into DC current or convert DC current into AC current. The local controller is coupled to the first, second and third switches and configured to control operation of the first, second and third switches.