Heat Pump Operation Planning for Peak Reverse Power Absorption
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Solution Overview
Problem
Conventional systems fail to effectively manage reverse power generated by photovoltaic devices, leading to grid instability and waste of generated power due to fluctuating energy production and consumer load, with heat pumps not being operated efficiently to reduce reverse power flow.
Innovation Solution
An operation planning method predicts peak reverse power periods and optimizes the operation of heat generation units, including heat pumps and storage systems, to store and utilize energy during times of excess generation, thereby reducing grid damage and power wastage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If solar power generation is increased to reduce energy costs and environmental impact, then power generation capacity improves, but reverse power causes grid instability and power wastage
Solution Approach 1:
The operation planning device predicts future power generation and consumption patterns, then determines advance operation plans for the heat pump and storage system. By performing preliminary actions (charging storage, pre-heating water) during periods of high solar generation before reverse power occurs, the system prevents grid instability while maximizing renewable energy utilization.
Solution Approach 2:
The system converts the harmful effect of reverse power (excess generation) into a beneficial opportunity by using prediction technology to identify when reverse power will occur, then proactively utilizing that excess power to charge storage systems and operate heat pumps. This transforms the grid stability problem into an energy optimization opportunity.
2Loss of energy
If heat pump operation is increased to utilize excess power, then reverse power reduction improves, but energy efficiency may deteriorate due to suboptimal operation timing
Solution Approach 1:
The operation planning device continuously monitors actual power generation and consumption against predicted values, then adjusts operation plans in real-time. This feedback mechanism ensures the heat pump operates at optimal times to maintain energy efficiency while dynamically adapting to changing conditions to maximize reverse power utilization.
Solution Approach 2:
The system transitions from static, fixed operation schedules to dynamic, adaptive operation plans that continuously adjust based on real-time weather forecasts, power generation patterns, and consumption data. This allows the heat pump to operate efficiently under varying conditions while maximizing utilization of excess solar power.
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 method effectively reduces grid instability and power wastage by predicting peak reverse power times and optimizing heat pump operations, ensuring efficient energy utilization and maintaining low-energy performance characteristics.
Implementation Method 1
Solar power is generated by transforming solar energy into electricity
Implementation Method 2
heats a refrigerant by absorbing heat from the atmosphere and compressing the refrigerant using electricity, and then transfers the heat to the water via a heat exchanger
Implementation Method 3
transfers the heat to the water via a heat exchanger
Data Source
AI summary
An operation planning method performed in a system including a power generation device, a first electric load operating using power generated by the power generation device, and a second electric load which generates heat using power generated by the power generation device. The operation planning method is performed to design an operation plan for the second electric load and includes: predicting, for individual unit time periods, an amount of power to be generated by the power generation device and an amount of power to be consumed by the first electric load; and designing the operation plan for the second electric load to operate during an operation period including the time period with the largest amount of reverse power, calculated by subtracting the amount of power to be consumed from the amount of power to be generated.