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Evaluation on a real provincial power system shows over 95% of diagrams are well presented.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/research-report/","Research & 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(OLNDs) difficult to automate?","Question",{"text":63,"@type":64},"Automation is impeded by diverse substation configurations, variable connectivity among components, and lack of standard rules for component placement and layout.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"What is the input to the proposed OLND generation tool?",{"text":68,"@type":64},"The tool takes the substation CIM/E model as input, using component attributes and connectivity relations.",{"name":70,"@type":61,"acceptedAnswer":71},"How does the approach evaluate diagram quality?",{"text":72,"@type":64},"It is evaluated on a real provincial power system, showing that over 95% of generated substation OLNDs are decently presented, with remaining cases requiring special 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Fana , Guangyi Liua , and Renchang Daia  \naGEIRI North America, San Jose, CA, USA  \nb College of William & Mary, Williamsburg, VA, USAc State Grid Nanjing Power Supply Company, Nanjing, Jiangsu, China  \narXiv : 1903 .09495v1 [ cs .OH] 20 Mar 2019  \nAbstract—In Energy Management System (EMS) applications and many other off-line planning and study tools, one-line diagram (OLND) of the whole system and stations is a straightforward view for planners and operators to design, monitor, analyze, and control the power system. Large-scale power system OLND is usually manually developed and maintained. The work is tedious, time-consuming and ease to make mistake. Meanwhile, the manually created diagrams are hard to be shared among the on-line and off-line systems. To save the time and efforts to draw and maintain OLNDs, and provide the capability to share the OLNDs, a tool to automatically develop substation based upon Common Information Model (CIM) standard is needed. Currently, there is no standard rule to draw the substation OLND. Besides, the substation layouts can be altered from the typical formats in textbooks based on factors of economy, efficiency, engineering practice, etc. This paper presents a tool on substation OLND automatic generation and visualization. This tool takes the substation CIM/E model as input, then automatically computes the coordinates of all components and generates the substation OLND based on its components attributes and connectivity relations. Evaluation of the proposed approach is presented using a real provincial power system. Over 95% of substation OLNDs are decently presented and the rest are corner cases, needing extra effort to do specific reconfiguration.  \nIndex Terms—CIM/E model, computer-aided modelling, oneline diagram, substation, visualization.  \nI. INTRODUCTION  \nWith high penetrations of renewable energy resources, distributed generation, and nonlinear power electronics devices, the wellness of system operation is facing more challenges [1]–[4] . To help system operators monitor and supervise power grids operation, automatic generation and visualization of the substation one-line diagram (OLND) is necessarily needed [5]–[7] .  \nIn the existing Energy Management System (EMS), few substation OLND layouts are automatically developed. Most of them are manually created based on a special drawing tool and specific OLND creation approach [8] . But, it has great potential to cause the inconsistency between database and visualized substation OLNDs, since changes made on either back-end database or the front-end substation OLNDs might not be automatically synchronized. It is even more probable to happen in developing countries, since power gridsin developing countries are experiencing rapid development and having numerous substations being built and expanded  \n[9] . Currently, there are three main reasons impeding the automation of substation OLND drawing: (1) diverse substation configurations; (2) various connections between substation components; (3) complicated components placement. Regarding the first factor, the real substation OLNDs are different from the classical substation layouts and diversified with compromise of economy, efficiency, engineering practice, etc. Meanwhile, the classical substation OLNDs are extracted from the real cases by keeping the common configurations and trimming different parts. On the other hand, the voltage level and the number of voltage levels could be very different in each substation. For example, the configuration of a substation with three-winding transformer(s) is totally different from a substation without transformer or with a two-winding transformer. The second barrier is the variability or flexibility of components connections. Taking disconnector as an example, a disconnector could have two breakers connected on its both sides, or have one brea","cbCaivRKMI2lVC5C","https://ap.wps.com/l/cbCaivRKMI2lVC5C","pdf",447754,"English","# Abstract\n# Index Terms\n# I. Introduction\n## Challenges for OLND automation\n## Prior research and CIM-based graphics","[{\"question\":\"Why are substation one-line diagrams (OLNDs) difficult to automate?\",\"answer\":\"Automation is impeded by diverse substation configurations, variable connectivity among components, and lack of standard rules for component placement and layout.\"},{\"question\":\"What is the input to the proposed OLND generation tool?\",\"answer\":\"The tool takes the substation CIM/E model as input, using component attributes and connectivity relations.\"},{\"question\":\"How does the approach evaluate diagram quality?\",\"answer\":\"It is evaluated on a real provincial power system, showing that over 95% of generated substation OLNDs are decently presented, with remaining cases requiring special reconfiguration.\"}]","Substation One-Line Diagram Automatic Generation and Visualization | PDF",1792836876,15]