一种源网荷储局域电网低频故障协调控制方法
By dynamically correcting the inertia coefficient and optimizing the line combination, the problems of inertia coefficient mismatch and resource utilization inefficiency in the local power grid of source-grid-load-storage were solved, and the efficiency and economy of fault coordination control were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- STATE GRID INNER MONGOLIA EASTERN ELECTRIC POWER CO LTD TONGLIAO POWER SUPPLY CO
- Filing Date
- 2026-04-27
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies fail to effectively consider the dynamic changes in the virtual inertia of grid-connected new energy sources and the impact of historical grid disturbances in local power grids with source-grid-load-storage configurations. This results in a mismatch between the inertia coefficient and the actual operating state, large errors in power deficit calculation, and failure to achieve optimal coordinated action of flexible photovoltaic and energy storage resources. This can easily lead to ineffective loss of energy storage resources or unnecessary load shedding, making it difficult to simultaneously achieve both economic efficiency and high efficiency in fault control.
By dynamically correcting the actual inertia coefficient based on the changes in active power at various historical time points, and combining the importance level of the switchable lines and historical stability scores, priority ranking and marginal loss function analysis, the optimal combination of load shedding and energy storage discharge control is achieved, thus realizing efficient fault coordination.
It enables real-time reflection of inertia coefficient, accurate selection of switchable lines, optimization of energy storage utilization, reduction of equipment operation and maintenance costs, and improvement of the safety, economy and power supply restoration capabilities of power grid fault control.
Smart Images
Figure CN122118710B_ABST