Electric Power Control System for Small-Scale Grid Stability
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Solution Overview
Problem
Small-scale electric power systems face challenges in securing enough reserves and maintaining stability, especially with the integration of intermittent natural energy sources like solar and wind power, which can lead to instability in electric power networks.
Innovation Solution
An electric power control system that includes a supplied energy acquiring means, a consumed energy acquiring means, and an electric power supply and demand controlling means, which calculates the total supplied and consumed energy to adjust the power distribution accordingly, ensuring stability by managing the balance between generators and loads within a predetermined electric power variation allowance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If centralized control system is built to optimize whole system configuration, then system optimization is improved, but infrastructure investment cost increases significantly
Solution Approach 1:
The patent divides the centralized control system into multiple distributed control units, each managing a subset of generators and loads. This segmentation allows the system to achieve comprehensive control functionality without requiring a single complex centralized infrastructure, thereby reducing overall investment while maintaining optimization capability.
Solution Approach 2:
The patent introduces a communication network as an intermediary that connects distributed control units, enabling them to exchange information and coordinate control actions. This intermediary allows the system to achieve centralized-level optimization through distributed decision-making, avoiding the need for expensive centralized infrastructure.
2Device complexity
If distributed control is used to reduce infrastructure investment, then device complexity is reduced, but system-wide optimization capability deteriorates
Solution Approach 1:
The patent combines multiple distributed control units into a coordinated network where each unit manages local optimization while sharing information with others. This merging of distributed units through communication networks enables the system to achieve whole-system optimization without requiring expensive centralized infrastructure.
Solution Approach 2:
The patent implements feedback mechanisms where distributed control units continuously exchange information about system state and control actions. This feedback loop allows each distributed unit to adjust its control strategy based on overall system conditions, achieving system-wide optimization through decentralized decision-making.
3Ease of manufacture
If small-scale electric power system is configured with natural energy sources, then ease of manufacture is improved, but system stability deteriorates due to insufficient reserves
Solution Approach 1:
The patent implements dynamic control strategies that continuously adjust generator output and load distribution based on real-time system conditions. This dynamic approach allows small-scale systems with natural energy sources to maintain stability by flexibly responding to fluctuations in generation and demand, compensating for insufficient reserves through agile control.
Solution Approach 2:
The patent employs predictive control methods that anticipate future system states and pre-adjust control parameters to prevent instability. By performing preliminary actions based on forecasted conditions, the system can maintain stability proactively rather than reactively, addressing the reserve insufficiency problem in small-scale natural energy systems.
Data Source
AI summary
An electric power control system of the present invention is connected to an electric power supplying means for supplying electric power and a load means for accepting supply of electric power and consuming the electric power. The electric power control system includes: a supplied energy acquiring means for acquiring a supplied energy, which is the amount of electric power supplied from the electric power supplying means; a consumed energy acquiring means for acquiring a consumed energy, which is the amount of electric power consumed by the load means; and an electric power supply and demand controlling means for, depending on a total supplied energy as the total of the acquired supplied energy and a total consumed energy as the total of the acquired consumed energy, transmitting and/or receiving electric power to and from another device to change the total supplied energy.