Zeming Zheng, Jinghong Zheng, Wenzhi Zhao, Zonghang Han
{"title":"基于PET的交直流混合系统动态电压特性研究","authors":"Zeming Zheng, Jinghong Zheng, Wenzhi Zhao, Zonghang Han","doi":"10.1109/ISGT-Asia.2019.8881201","DOIUrl":null,"url":null,"abstract":"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.","PeriodicalId":257974,"journal":{"name":"2019 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia)","volume":"126 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"10","resultStr":"{\"title\":\"Research on Dynamic Voltage Characteristics of AC/DC Hybrid System Based on PET\",\"authors\":\"Zeming Zheng, Jinghong Zheng, Wenzhi Zhao, Zonghang Han\",\"doi\":\"10.1109/ISGT-Asia.2019.8881201\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"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.\",\"PeriodicalId\":257974,\"journal\":{\"name\":\"2019 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia)\",\"volume\":\"126 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2019-05-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"10\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2019 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ISGT-Asia.2019.8881201\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2019 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISGT-Asia.2019.8881201","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Research on Dynamic Voltage Characteristics of AC/DC Hybrid System Based on PET
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.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
