Feeder Line Controller Power Management via PLC
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Solution Overview
Problem
Conventional electric grid management systems are inadequate for controlling and managing power consumption and prioritizing power cutoffs across large electric grids or community-based grids, leading to inefficiencies and potential safety risks, especially during peak demand or power shortages.
Innovation Solution
An intelligent electric grid management system comprising a feeder line controller, smart meters, and intelligent load receptacles that utilize power line communication to manage power distribution and cutoffs based on pre-set digital codes, allowing for automatic and efficient regulation of power supply and consumption across multiple user ends.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If power supply is cut off or limited globally or locally to manage power capacity, then power consumption capacity is controlled, but user convenience and system reliability deteriorate
Solution Approach 1:
The patent segments the power grid into multiple feeder lines, each with independent controllers that can be individually managed. This allows selective power cutoff to specific feeder lines rather than global cutoff, maintaining reliability for essential loads while controlling overall power consumption capacity.
Solution Approach 2:
The system pre-assigns priority levels to different loads before power shortages occur. When power capacity is exceeded, the system automatically cuts off non-essential loads first based on pre-defined priority levels, avoiding the need for manual intervention and ensuring critical loads maintain power supply.
2Ease of operation
If conventional telecommunication networks and cloud platforms are used for individual power management, then user self-management capability is improved, but system security and complexity worsen
Solution Approach 1:
The patent extracts the power management functionality from external telecommunication networks and cloud platforms, implementing it directly within the power distribution system itself through feeder line controllers and smart meters. This eliminates dependency on vulnerable external networks while maintaining user self-management capabilities through local automated control.
Solution Approach 2:
The system introduces feeder line controllers as intermediaries between the power source and end-user loads. These controllers locally manage power distribution and cutoff decisions based on priority levels, eliminating the need for continuous external network communication while maintaining automated management capabilities.
3Extent of automation
If multiple separate control systems are used for power management, then control functionality is improved, but device complexity and integration difficulty worsen
Solution Approach 1:
The patent merges multiple control functions into integrated feeder line controllers that combine power monitoring, load management, and automated cutoff capabilities in single devices. This consolidation reduces the number of separate components and simplifies system integration while maintaining comprehensive automated control functionality.
Solution Approach 2:
The feeder line controllers are designed as universal devices that can perform multiple functions: monitoring power consumption, managing load priorities, executing automated cutoffs, and communicating with the central system. This multi-functionality eliminates the need for multiple specialized devices and simplifies the overall system architecture.
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 efficient and effective management of power consumption in large electric grids, minimizing the impact of power cutoffs on essential loads and reducing system costs, while ensuring optimal energy savings and safety by prioritizing power cutoffs based on pre-defined levels.
Implementation Method 1
transmit control signals and receive feedback signals through the power supply line by means of a power line communication protocol
Data Source
AI summary
An intelligent electric grid management system and method includes at least one feeder line controller, which is arranged between a secondary power transforming station and at least one power supply feeder line to receive high voltage power and a control instruction from the secondary power transforming station and to store and set, in advance, digital code data of each power supply feeder line, a smart meter of a user end, appliance loads, and priority cutoff levels, a plurality of smart meters, which are each connected between the distribution line of each user end and at least one power feeder line, wherein the smart meter and the feeder line controller transmit therebetween a user end load ON/OFF control signal and a load state detection feedback signal through the power supply feeder line by means of the power line communication protocol; and a plurality of intelligent load receptacles, which are connected to the receptacle power line of the distribution line of the user end and the household appliance loads so that based on the power grid overall power requirement state and the priority cutoff level, the feeder line controller controls, through the smart meter by means of the power line communication protocol, each of the intelligent load receptacles to supply or cut off power to the household appliance load connected thereto.