A reduced-order model for high-frequency oscillation mechanism analysis of droop control based flexible DC distribution system
| Autor: | Songhan Jiang, Yingqi Liu, Xidong Li, K. Peng, Guangzeng Yao |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
DC distribution system
Oscillation Computer science 020209 energy 020208 electrical & electronic engineering Equivalent series inductance Energy Engineering and Power Technology 02 engineering and technology Filter capacitor Control theory 0202 electrical engineering electronic engineering information engineering Voltage droop Sensitivity (control systems) Time domain Electrical and Electronic Engineering |
| Zdroj: | International Journal of Electrical Power & Energy Systems. 130:106927 |
| ISSN: | 0142-0615 |
| Popis: | High-frequency oscillation (HFO) is easy to occur in a flexible DC distribution system, due to the influence of the interaction of multiple time scale control links and physical circuits. This paper studies the mechanism of HFO and establishes a reduced-order mathematical model of a flexible DC distribution system based on droop control. Sensitivity analysis has been used to obtain a second-order system for mechanism analysis. The analytical equation of HFO is deduced in time domain considering the system parameters’ influence. This paper summarizes the influence law of the filter capacitor, equivalent inductance, and controller parameters on HFO. Finally, a simulation model of a low-voltage flexible DC distribution system is built based on Matlab/Simulink, and the simulation result verifies the validity of the theoretical analysis. |
| Databáze: | OpenAIRE |
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