{"title":"不平衡输配电系统的迭代耦合联合仿真框架","authors":"Gayathri Krishnamoorthy, A. Dubey, P. Sen","doi":"10.1109/PTC.2019.8810625","DOIUrl":null,"url":null,"abstract":"The need for integrated transmission and distribution system analysis (T & D) has been recently identified by research and industry alike. This paper presents an integrated unbalanced T & D analysis framework using an iteratively coupled co-simulation approach. The unbalanced T & D systems are solved separately using dedicated solvers. An iterative approach is developed for T & D interface coupling and to ensure convergence of the boundary variables. To do so, analytical expressions governing the T & D interface are obtained and first-order convergent methods using Fixed-point iteration (FPI) is proposed to solve the system of nonlinear T & D interface equations. The proposed framework is tested using an integrated T & D system model comprised of 9-bus IEEE transmission test system integrated with a real-world 6000-bus distribution test system. It is demonstrated that the proposed framework can model the impacts of system unbalance and increased demand variability on integrated T & D systems and converges during stressed system conditions.","PeriodicalId":187144,"journal":{"name":"2019 IEEE Milan PowerTech","volume":"53 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":"{\"title\":\"Iteratively-Coupled Co-simulation Framework for Unbalanced Transmission-Distribution System\",\"authors\":\"Gayathri Krishnamoorthy, A. Dubey, P. Sen\",\"doi\":\"10.1109/PTC.2019.8810625\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The need for integrated transmission and distribution system analysis (T & D) has been recently identified by research and industry alike. This paper presents an integrated unbalanced T & D analysis framework using an iteratively coupled co-simulation approach. The unbalanced T & D systems are solved separately using dedicated solvers. An iterative approach is developed for T & D interface coupling and to ensure convergence of the boundary variables. To do so, analytical expressions governing the T & D interface are obtained and first-order convergent methods using Fixed-point iteration (FPI) is proposed to solve the system of nonlinear T & D interface equations. The proposed framework is tested using an integrated T & D system model comprised of 9-bus IEEE transmission test system integrated with a real-world 6000-bus distribution test system. It is demonstrated that the proposed framework can model the impacts of system unbalance and increased demand variability on integrated T & D systems and converges during stressed system conditions.\",\"PeriodicalId\":187144,\"journal\":{\"name\":\"2019 IEEE Milan PowerTech\",\"volume\":\"53 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2019-06-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"6\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2019 IEEE Milan PowerTech\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/PTC.2019.8810625\",\"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 Milan PowerTech","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PTC.2019.8810625","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Iteratively-Coupled Co-simulation Framework for Unbalanced Transmission-Distribution System
The need for integrated transmission and distribution system analysis (T & D) has been recently identified by research and industry alike. This paper presents an integrated unbalanced T & D analysis framework using an iteratively coupled co-simulation approach. The unbalanced T & D systems are solved separately using dedicated solvers. An iterative approach is developed for T & D interface coupling and to ensure convergence of the boundary variables. To do so, analytical expressions governing the T & D interface are obtained and first-order convergent methods using Fixed-point iteration (FPI) is proposed to solve the system of nonlinear T & D interface equations. The proposed framework is tested using an integrated T & D system model comprised of 9-bus IEEE transmission test system integrated with a real-world 6000-bus distribution test system. It is demonstrated that the proposed framework can model the impacts of system unbalance and increased demand variability on integrated T & D systems and converges during stressed system conditions.