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Case Study of Digital Control Systems for High-Voltage Substations

机译：高压变电站数字控制系统案例研究

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This paper describes the design, implementation, and commissioning of a complete protection and control system retrofit project at a large transmission substation. Fort Thompson substation, located in South Dakota, has two 345/230 kV step-down transformers with two 345 kV lines and twelve 230 kV lines. Western Area Power Administration (Western) undertook a project several years ago to completely renovate all the protection and control systems at this substation. They used the automation practices that Western had developed to reduce costs of new substation construction. Recent innovations in the integration capabilities of microprocessor-based protective relays, and other substation IEDs, make a complete integration system upgrade, including automation, cost effective compared to selective replacement of individual IEDs, wiring, and testing. This paper describes the justification and special challenges of automating an existing substation. It also discusses the overall system design concept of the integration and automation schemes that were employed. Topics covered in the paper include: 1) extensive use of fiber-optic cables and multifunctional protection devices, 2) replacement of hardwired lockout relays with "soft" logic and hardwired I/O to the RTU, 3) project management tools and operator interface screen design, 4) workforce impact due to a completely automated substation and 5) insights gained in testing and commissioning the substation
机译：本文介绍了在大型传输变电站下完全保护和控制系统改造项目的设计，实施和调试。位于南达科他州的Fort Thompson变电站有两个345/230 kV降压变压器，有两个345 kV线和12个230 kV线。西部地区电力管理局（西部）在几年前开设了一个项目，以完全翻新该变电站的所有保护和控制系统。他们利用西方制定的自动化实践降低了新的变电站建设的成本。最近在基于微处理器的保护继电器的集成功能的创新，以及其他变电站IED，使得完整的集成系统升级，包括自动化，与选择性更换个人IED，接线和测试相比的成本效益。本文介绍了自动化现有变电站的理由和特殊挑战。它还讨论了所采用的集成和自动化方案的整体系统设计理念。本文涵盖的主题包括：1）广泛使用光纤电缆和多功能保护装置，2）用“软”逻辑和硬连线I / O到RTU，3）项目管理工具和操作员界面更换硬连线锁定继电器。屏幕设计，4）劳动力影响因完全自动变电站和5）在测试和调试变电站时获得的见解

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