可编程逻辑控制器（PLC）是收集电厂运行数据和控制水处理过程的主要计算机工具。由于对过程控制、自动化和安全的需求不断增加，在过去几年中，水处理厂中安装的PLC数量迅速增长。这会增加整个控制系统的负荷，包括监控和数据采集（SCADA）系统。增长还可能导致标准不一致，以及对未来工厂控制系统缺乏远见。与此同时，该行业的趋势是，与专有设备相比，更开放的系统与SCADA和业务系统的集成得到了改善。这些趋势为确保系统一致、可靠、优化并与技术保持同步带来了新的挑战。 支持这些系统所需的技能也在发生变化。EPCOR在加拿大艾伯塔省埃德蒙顿拥有并运营两座水处理厂，在EPCOR的水处理厂使用基于PLC的控制系统和SCADA软件。本文介绍了EPCOR在制定PLC总体规划以应对这些挑战方面的经验。总体规划旨在为PLC采购、技术选择、文件编制、设备优化和未来增长提供总体指导。本文讨论了总体规划研究中涉及的步骤、研究中确定的需要改进的领域、实施建议所面临的挑战以及实现的效益。包括桌子。

Programmable Logic Controllers (PLCs) are the primary computer tool through which plant operating data is gathered and water treatment processes are controlled. Due to increasing needs for process control, automation, and safety, the numberof PLCs being installed in water treatment plants has grown rapidly over the past few years. This creates increased loads on overall control systems including supervisory control and data acquisition (SCADA) systems. Growth may also lead to inconsistencies in standards and a lack of vision for future plant control systems. At the same time, trends in the industry are pointing towards more open systems with improved integration with SCADA and business systems as opposed to proprietary equipment. These trends create new challenges to ensure that systems are consistent, reliable, optimized, and remain abreast of technology. The skills required to support these systems are also changing. EPCOR, which owns and operates two water treatment plants in Edmonton, Alberta, Canada, uses PLC-PCbased control systems and SCADA software at EPCOR's water treatment plants. This paper presents EPCOR's experience in developing a PLC master plan to deal with these challenges. The master plan was intended to provide overall direction as to PLC purchasing, technology selection, documentation, equipment optimization, and future growth. The paper discusses the steps involved in the master planning study, areas identified in the study as needing improvement, the challenges involved in implementing the recommendations, and the benefits realized. Includes table.