Household Energy Management Controller for Generator Switching
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Solution Overview
Problem
Power providers face challenges in meeting peak electricity demand, and consumers need a system to automatically manage energy usage during off-peak hours to reduce bills and load on generating plants, while also considering local energy generation.
Innovation Solution
A household energy management system with a controller that monitors energy usage and rates, automatically initiates a local generator when energy demand exceeds a predetermined level, and switches energy usage from the utility to the local source during peak hours or high rates, using a communication network to coordinate with utility meters and demand servers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If consumers manually operate appliances during off-peak times to reduce electricity costs, then energy cost savings are achieved, but consumer convenience and ease of operation deteriorate because consumers must be present and track time manually
Solution Approach 1:
The energy management system automatically monitors energy usage, detects peak/off-peak periods, and controls appliances without requiring consumer intervention. The system serves itself by making autonomous decisions about when to operate devices based on energy rates and user-defined preferences, eliminating the need for manual time tracking and operation.
Solution Approach 2:
The system continuously monitors energy usage data from utility meters and receives real-time energy rate information from the demand server. This feedback loop enables the controller to automatically adjust appliance operation timing based on current energy conditions, optimizing cost savings while maintaining convenience.
2Adaptability or versatility
If consumers use local energy sources to supplement utility power, then energy independence and cost control improve, but system complexity increases due to integration of multiple energy sources
Solution Approach 1:
The energy management system is designed to work with multiple energy sources including utility power and local generators. The controller automatically selects and switches between different energy sources based on availability, cost, and user preferences, providing universal functionality that handles various energy supply scenarios without requiring separate systems.
Solution Approach 2:
The demand server acts as an intermediary that coordinates between the utility company and the consumer's local energy sources. It provides standardized communication protocols and switching control, simplifying the integration complexity by mediating the interaction between multiple energy sources and the consumer's appliances.
3Productivity
If the system automatically switches from utility to local generator during peak hours, then load reduction on generating plants is achieved, but reliability may worsen if the local generator fails or is unavailable
Solution Approach 1:
The system monitors the operational status and availability of the local generator in advance before switching is required. It maintains readiness checks and can identify potential generator failures beforehand, allowing for preventive measures or alternative planning to cushion against reliability issues during critical peak load reduction periods.
Solution Approach 2:
The switching between utility and local generator is dynamic rather than fixed. The system continuously evaluates generator availability, operational status, and energy rates, adjusting the energy source selection in real-time. This dynamic approach allows the system to adapt to changing reliability conditions and switch back to utility power if the generator becomes unavailable or fails.
Data Source
AI summary
A household energy management system is provided comprising a controller for managing power consumption of multiple devices within a household wherein the controller monitors energy usage data from a utility. The system further provides a utility meter for measuring an amount of energy usage by the household and a user interface through which a user can enter a parameter of the energy usage. The system yet further provides a local generator for generating energy for one or more of the energy consuming devices wherein the controller initiates the generator and changes at least some of the energy usage from the utility to the local generator when the energy usage level is within a predetermined percentage range of the parameter.