{"title":"直流铁路系统轨道电位和杂散电流的多态统一计算模型","authors":"Guifu Du, Zixuan Zheng, Qiaoyue Li, Fengchuan Xu, Tianye Zhang, Dongliang Zhang, Xiaoping Zhang, Weiguo Huang","doi":"10.1049/els2.12070","DOIUrl":null,"url":null,"abstract":"<p>In order to calculate the dynamic distribution of rail potential and stray current accurately, a multi-state unified calculation model of rail potential and stray current is proposed, and the characteristics of different protection devices and reflux system in multi-state DC railway systems are analysed. In the proposed model, the multi-state characteristics of the traction substation, train, protection devices and reflux system are uniformly simulated by unified node models. The mixed simulation parameters of the catenary and reflux system are unified to lumped parameter networks, and the multi-node voltage equations are established based on the simulation model. Then, the power flow of DC railway systems is calculated using an iterative solution, and the dynamic distribution of rail potential and stray current are solved by differential equations. The multi-state unified calculation model is built and the distribution of rail potential and stray current in different conditions are simulated based on the parameters of Wuxi Subway Line 2. In order to verify the multi-state unified calculation model proposed, field tests and simulations are carried out. Results show that the multi-state unified calculation model can unify the complex states of DC railway systems and calculate the distribution of rail potential and stray current accurately.</p>","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":null,"pages":null},"PeriodicalIF":16.4000,"publicationDate":"2023-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12070","citationCount":"2","resultStr":"{\"title\":\"Multi-state unified calculation model of rail potential and stray current in DC railway systems\",\"authors\":\"Guifu Du, Zixuan Zheng, Qiaoyue Li, Fengchuan Xu, Tianye Zhang, Dongliang Zhang, Xiaoping Zhang, Weiguo Huang\",\"doi\":\"10.1049/els2.12070\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>In order to calculate the dynamic distribution of rail potential and stray current accurately, a multi-state unified calculation model of rail potential and stray current is proposed, and the characteristics of different protection devices and reflux system in multi-state DC railway systems are analysed. In the proposed model, the multi-state characteristics of the traction substation, train, protection devices and reflux system are uniformly simulated by unified node models. The mixed simulation parameters of the catenary and reflux system are unified to lumped parameter networks, and the multi-node voltage equations are established based on the simulation model. Then, the power flow of DC railway systems is calculated using an iterative solution, and the dynamic distribution of rail potential and stray current are solved by differential equations. The multi-state unified calculation model is built and the distribution of rail potential and stray current in different conditions are simulated based on the parameters of Wuxi Subway Line 2. In order to verify the multi-state unified calculation model proposed, field tests and simulations are carried out. Results show that the multi-state unified calculation model can unify the complex states of DC railway systems and calculate the distribution of rail potential and stray current accurately.</p>\",\"PeriodicalId\":1,\"journal\":{\"name\":\"Accounts of Chemical Research\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":16.4000,\"publicationDate\":\"2023-02-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12070\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Accounts of Chemical Research\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1049/els2.12070\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1049/els2.12070","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Multi-state unified calculation model of rail potential and stray current in DC railway systems
In order to calculate the dynamic distribution of rail potential and stray current accurately, a multi-state unified calculation model of rail potential and stray current is proposed, and the characteristics of different protection devices and reflux system in multi-state DC railway systems are analysed. In the proposed model, the multi-state characteristics of the traction substation, train, protection devices and reflux system are uniformly simulated by unified node models. The mixed simulation parameters of the catenary and reflux system are unified to lumped parameter networks, and the multi-node voltage equations are established based on the simulation model. Then, the power flow of DC railway systems is calculated using an iterative solution, and the dynamic distribution of rail potential and stray current are solved by differential equations. The multi-state unified calculation model is built and the distribution of rail potential and stray current in different conditions are simulated based on the parameters of Wuxi Subway Line 2. In order to verify the multi-state unified calculation model proposed, field tests and simulations are carried out. Results show that the multi-state unified calculation model can unify the complex states of DC railway systems and calculate the distribution of rail potential and stray current accurately.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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