Research on Dynamic Voltage Characteristics of AC/DC Hybrid System Based on PET
- Resource Type
- Conference
- Authors
- Zheng, Zeming; Zheng, Jinghong; Zhao, Wenzhi; Han, Zonghang
- Source
- 2019 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia) Innovative Smart Grid Technologies - Asia (ISGT Asia), 2019 IEEE. :270-274 May, 2019
- Subject
- Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Computing and Processing
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Power, Energy and Industry Applications
Robotics and Control Systems
Signal Processing and Analysis
Transportation
Circuit faults
Capacitors
Power system dynamics
Power system stability
Stability criteria
Voltage control
power electronic transformer
PET
dynamic voltage characteristics
system stability
AC/DC hybrid system
- Language
- ISSN
- 2378-8542
Since power electronic transformers (PET) can effectively control the power quality of the system while enabling AC and DC equipment to be flexibly connected to the grid, the dynamic voltage characteristics of PET system under large disturbances is of great significance for improving the stability of the system operation and designing protection devices in such system. This paper analyzed the dynamic voltage characteristics of the ports under two typical large disturbance faults, based on the typical three-stage topology of PET and its control strategies. The results show that the state of 1900V voltage of the rectification stage output could be the key index of stability state of the AC/DC hybrid system based on PET. Finally, the Prony method is used to quantitatively evaluate the severity of the fault in the AC/DC hybrid system based on PET. The results could be the reference to the design of PET protection devices and the study of the stability of PET systems.