Demand-Side Resource Coordination for Stable Grid Frequency Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The integration of demand-side resources with intermittent characteristics into power frequency control systems can cause significant load changes and stability issues due to simultaneous on/off operations, threatening the safety and stability of the power grid.
Innovation Solution
A method and system for coordinated control of demand-side resources, considering their intermittent characteristics, to determine a target total control quantity and action quantity for each resource, ensuring only one resource from complementary pairs operates at a time to avoid large-scale simultaneous activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If demand-side resources directly participate in frequency control without coordination, then frequency regulation response speed is improved, but system stability deteriorates due to simultaneous on/off operations causing huge load changes
Solution Approach 1:
The control center performs preliminary classification of demand-side resources into complementary pairs before frequency control events occur. This advance organization ensures that when frequency regulation is needed, resources are already paired and can be activated in a coordinated manner, preventing simultaneous on/off operations that would cause huge load changes while maintaining quick response capability.
Solution Approach 2:
The demand-side resources are segmented into multiple complementary pairs rather than operating as a single group. Each pair consists of resources with opposite operational states (one turning on while the other turns off), which balances the load changes and maintains system stability during frequency regulation events.
2Reliability
If demand-side resources participate in frequency control, then frequency regulation capability is improved, but resource cost increases due to simultaneous activation of multiple resources
Solution Approach 1:
Instead of activating all available demand-side resources during frequency control events, the system activates only the necessary number of complementary pairs required to achieve the target control quantity. This partial action approach maintains sufficient frequency regulation capability while avoiding the excessive resource activation that would lead to unnecessary energy loss and increased costs.
Data Source
AI summary
Provided an intermittent characteristic-based demand-side resource coordination control method and system. The method includes: receiving a control request, where the control request is used for requesting control of demand-side resources having an intermittent characteristic; determining a target total control quantity of demand-side resources; determining a coordination strategy of multiple demand-side resources and an action quantity of each of the multiple demand-side resources; and performing coordinated control on the multiple demand-side resources based on the target total control quantity of demand-side resources, the coordination strategy, and the action quantity of each of the multiple demand-side resources.