考虑时空特性的直流故障暂态过电压抑制效果量化方法
By constructing a spatiotemporal characteristic index of transient overvoltage under DC faults, the suppression effect of dynamic reactive power sources is quantified, thus solving the grid overvoltage problem caused by DC faults and improving the grid stability and the safe power transmission capacity of new energy sources.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA UNIV OF MINING & TECH (BEIJING)
- Filing Date
- 2023-12-12
- Publication Date
- 2026-07-17
AI Technical Summary
When DC commutation fails or DC blocking occurs, the grid at the transmitting end may experience excessively high or low voltage, which may lead to large-scale disconnection of new energy sources from the grid and threaten the safe and stable operation of the system. Existing technologies lack effective methods for quantifying the dynamic reactive power source regulation effect.
A quantitative method for suppressing transient overvoltages in DC faults considering spatiotemporal characteristics is proposed. This method includes constructing indices for the temporal and spatial characteristics of transient overvoltages, calculating the location and control range of dynamic reactive power sources, and quantifying the suppression effect of dynamic reactive power sources on transient overvoltages.
By using quantitative methods, we can evaluate the ability of dynamic reactive power sources to suppress transient overvoltages, providing a reference for power grid planning and control and improving system stability.
Smart Images
Figure CN117761457B_ABST