HEMS Server Matching Surplus PV Power to Controllable Loads
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Solution Overview
Problem
The widespread adoption of photovoltaic (PV) systems leads to a 'surplus electricity issue' where generated power cannot be fully utilized, causing inefficiencies and potential power imbalances in the electric power system, as existing methods either prevent power generation or require costly storage solutions.
Innovation Solution
An electric power management system that connects consumers with PV systems to those with controllable loads via a server apparatus, allowing data exchange to optimize power usage by matching surplus electricity with demand, thereby reducing unnecessary power generation and consumption inefficiencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If PV systems are widely introduced to generate renewable electric power, then the amount of green electric power supplied to the system increases, but surplus electricity is generated when consumer demand is low, causing power supply-demand imbalance
Solution Approach 1:
The patent combines multiple PV systems and controllable loads into an integrated power management system where surplus electricity from one PV system can be utilized by controllable loads in the same system, reducing overall surplus electricity and improving energy utilization efficiency
Solution Approach 2:
The patent implements a feedback mechanism where the power management system continuously monitors electricity generation from PV systems and consumer demand, then dynamically adjusts controllable loads to match surplus electricity availability, preventing power supply-demand imbalance
2Stability of the object's composition
If thermal power plants are used to control the amount of electric power generated by PV systems, then power supply-demand balance is optimized, but the regulating capacity is insufficient when PV systems spread on a large scale
Solution Approach 1:
The patent enables the power management system to automatically balance power supply and demand by directly controlling controllable loads based on real-time PV generation and consumer demand data, without requiring external thermal power plant regulation, making the system self-sufficient in maintaining stability
3Productivity
If PV systems operate at full power generation capability, then the power generation capability is fully utilized, but surplus electricity occurs during low power consumption periods, wasting generated power
Solution Approach 1:
The patent makes the operation of PV systems dynamic by allowing controllable loads to adjust their power consumption in real-time based on surplus electricity availability, enabling PV systems to operate at full capability while dynamically matching supply with controllable demand to avoid waste
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 mitigates the surplus electricity issue by ensuring that controllable loads consume excess power, maintaining system balance and reducing waste, while also minimizing consumer inconvenience and the need for costly storage solutions.
Implementation Method 1
mass spreading of photovoltaic generation, wind power generation and other renewable electric power generation
Data Source
AI summary
The HEMS of each consumer transmits the amount of surplus electricity that is expected by to be generated by a PV system, and/or the amount of electric power that is needed by a controllable load, in a predetermined time slot on a predetermined date, to a server apparatus. The server apparatus, based on the notified amount of surplus electricity and the amount of electric power that is needed by the controllable load, combines a first consumer and a second consumer so that the amount of electric power needed by the controllable load will be equal to or greater than the amount of surplus electricity. Then, under the control the HEMS of the second consumer, the surplus electricity that is generated by the first consumer is consumed by each controllable load.