Decentralized Microgrid Control via Local Frequency Measurements
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Solution Overview
Problem
Conventional unit commitment methods in power systems require communication between generating units, making them ineffective in scenarios without a centralized controller, such as during natural disasters.
Innovation Solution
A communication-free control framework where each power generating unit determines its operating schedule based on local measurements, using modular subroutines that allow for autonomous operation and 'plug-and-play' functionality, reducing manual effort during commissioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional unit commitment methods are used, then system optimization can be achieved, but communication between generating units is required
Solution Approach 1:
The patent divides the centralized control system into independent decentralized units, where each generating unit operates autonomously using local measurements. This segmentation eliminates the need for communication infrastructure while maintaining system optimization through independent decision-making at each unit.
Solution Approach 2:
Each generating unit performs its own unit commitment decisions using only local frequency measurements, without requiring information from other units or a central controller. This self-service approach removes communication dependencies while achieving system-wide coordination through autonomous local actions.
2Reliability
If centralized control is used, then coordinated operation can be achieved, but the system becomes vulnerable to communication failures during disasters
Solution Approach 1:
By segmenting the control function across independent generating units, the system eliminates single points of failure. Each unit continues to operate autonomously during communication failures or disasters, ensuring operation continuity without centralized coordination.
Solution Approach 2:
The decentralized control architecture is designed in advance to withstand communication failures. By removing communication dependencies before disasters occur, the system is cushioned against the impact of communication loss and can maintain reliable operation during emergencies.
3Ease of manufacture
If traditional commissioning procedures are used, then system integration can be achieved, but manual effort and time are required
Solution Approach 1:
Each generating unit is equipped with autonomous decision-making capability that enables plug-and-play commissioning. Units automatically integrate into the system through local frequency measurements without requiring manual configuration or coordination, dramatically reducing commissioning effort and time.
Solution Approach 2:
The decentralized control algorithm is designed to be universally applicable across different generating unit types and system configurations. This universality allows any unit to be quickly integrated without custom commissioning procedures, reducing both manual effort and commissioning time.
Data Source
AI summary
Systems, methods, and computer-readable media are described for addressing the unit commitment problem in a power grid by providing a communication-free control framework according to which each power generating unit in the power grid determines its own operating schedule for turning on or off based solely on local measurements.