Power Supply Output Allocation for Cost and Frequency Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing power supply-demand adjustment systems face challenges in reducing adjustment costs while maintaining output change rates and preventing frequency fluctuations due to supply-demand imbalances, particularly when output distribution is based on cost advantages, leading to reduced overall output change rates and potential frequency fluctuations.
Innovation Solution
A power supply-demand adjustment device distributes output to adjustment power supplies based on an advantage order of adjustment costs, ensuring that the output change direction reduces the difference between the distributed output and the output limit value, regardless of the direction, to maintain output change rates and suppress frequency fluctuations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If output distribution is performed in ascending order of adjustment cost to reduce adjustment costs, then adjustment cost is reduced, but output change rate is reduced and frequency fluctuation occurs
Solution Approach 1:
The patent changes the parameter of output distribution order from static (fixed ascending order of adjustment cost) to dynamic (adjusted based on remaining output capacity and supply-demand imbalance). By modifying how the distribution order is determined, the system can balance cost reduction with maintaining sufficient output change rate, preventing frequency fluctuation while optimizing adjustment cost.
2Loss of energy
If output is distributed to adjustment power supplies with lowest adjustment cost first, then adjustment cost is reduced, but the number of adjustment power supplies that can change output in both directions is reduced
Solution Approach 1:
The patent introduces dynamic adjustment to the output distribution process. The distribution order is not fixed but dynamically adjusted based on real-time conditions including remaining output capacity (difference between distributed output and output limit value) and supply-demand imbalance. This allows the system to adapt the distribution strategy to maintain versatility in output change directions while still optimizing for cost reduction.
3Reliability
If adjustment power is secured in advance with fixed output distribution, then supply capability is ensured, but flexibility to respond to varying supply-demand conditions is reduced
Solution Approach 1:
The patent implements periodic recalculation of the output distribution order based on changing supply-demand conditions. Rather than using a fixed distribution order, the system periodically updates the distribution strategy based on current imbalance and remaining capacity, ensuring both reliable supply capability and flexible response to varying conditions.
Data Source
AI summary
A power supply-demand adjustment device performs output distribution to M adjustment power supplies among N adjustment power supplies in a system, based on adjustment information and supply-demand imbalance. The adjustment information includes output change rate, a distributed output, and an output limit value for each adjustment power supply. For each period, the output distribution satisfying the following (x) and (y) is performed; where (x) is the distribution of an output to the adjustment power supply in an increasing direction in ascending or descending order of the adjustment cost; and (y) is regardless of whether an output direction is the increasing or decreasing direction, an output to be distributed to the adjustment power supply in the period is in a reducing direction with respect to reduction in a difference between the distributed output to the adjustment power supply and the output limit value of the adjustment power supply.