Power Control Apparatus for Predictive Peak Cut Threshold Optimization
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Solution Overview
Problem
Existing power control systems face challenges in setting an optimal threshold for power discharge from storage devices to achieve peak cut reductions in electricity charges, leading to inefficient peak cut operations and accelerated deterioration of storage devices due to frequent charging and discharging.
Innovation Solution
A power control apparatus with a peak cut prediction unit, threshold setting unit, and charge/discharge control command unit that predicts peak demand periods and sets thresholds to limit power supply, allowing the power storage device to discharge excess demand, thereby optimizing peak cut effectiveness and extending device lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the threshold for power supply is set too high, then the discharge from the power storage device is hardly performed, but the frequency of obtaining the effect of the peak cut decreases
Solution Approach 1:
The system performs preliminary prediction of peak demand periods using the peak cut prediction unit before the actual peak occurs. This allows the threshold setting unit to pre-calculate appropriate thresholds based on predicted peak characteristics, enabling the power storage device to be ready for discharge at the optimal moment rather than reacting too late.
Solution Approach 2:
The system continuously monitors actual power supply amounts and compares them against predicted peaks. The threshold setting unit adjusts thresholds based on feedback from actual power consumption patterns, ensuring that the threshold is high enough to allow necessary discharge but low enough to trigger peak cut when needed.
2Productivity
If the threshold is set too low, then the power storage device is discharged more than necessary, but the storage capacity becomes empty during the period that needs peak cut
Solution Approach 1:
The system predicts peak demand periods in advance and calculates appropriate thresholds before the peak occurs. This preliminary action ensures that the threshold is set at an optimal level that triggers discharge when needed without causing the storage capacity to deplete completely during the peak period.
Solution Approach 2:
The threshold is not fixed but dynamically adjusted based on predicted peak characteristics and actual power consumption patterns. The threshold setting unit modifies the threshold level to match the specific conditions of each predicted peak period, ensuring optimal discharge control.
3Reliability
If the power storage device is frequently discharged to perform peak cut, then the peak cut operation is improved, but the deterioration of the power storage device is accelerated
Solution Approach 1:
The system predicts peak demand periods in advance and determines the necessary discharge amount before the peak occurs. This allows the system to perform discharge only when and to the extent needed for effective peak cut, avoiding unnecessary frequent discharge cycles that would accelerate device deterioration.
Solution Approach 2:
The system changes the discharge parameters (threshold, discharge amount, timing) based on predicted peak characteristics and device state. By optimizing these parameters, the system achieves effective peak cut while minimizing the number of discharge cycles and their intensity, thereby reducing wear on the power storage device.
4Reliability
If the battery is occupied for peak cut operation, then the peak cut effectiveness is improved, but the battery cannot be used as emergency power supply for VPP or BCP
Solution Approach 1:
The system predicts peak demand periods in advance and plans discharge operations accordingly. This preliminary planning allows the system to coordinate peak cut discharge with emergency power supply requirements, ensuring that the battery can serve multiple functions without conflict by timing operations appropriately.
Solution Approach 2:
The power storage device is designed to serve multiple functions: peak cut operation, emergency power supply for VPP (Virtual Power Plant), and BCP (Business Continuity Planning). The control system manages these different functions by prioritizing based on predicted needs and actual conditions, allowing the single battery system to fulfill multiple roles effectively.
Data Source
AI summary
A power control apparatus has a peak cut prediction unit that predicts a period of time to impose a restriction on power supply from a power system to a consumer based on a predetermined condition, a threshold setting unit that sets a predetermined threshold such that a power supply amount from the power system to the consumer does not exceed the threshold in the period of time predicted by the peak cut prediction unit, and a charge/discharge control command unit that stops power supply from the power system to the consumer and causes a power storage device to be discharged by an amount of demand power exceeding the threshold when demand power of the consumer reaches the threshold in the period of time predicted by the peak cut prediction unit.