Automation and supervision of a sewage lifting station PR36 in SEAAL

Abstract

It is well known that infrastructure is the fundamental facilities and systems serving a country or a city to support productive activities. Reducing costs, eliminating mistakes and saving time are the reasons why the automation of the infrastructures has become an absolute necessity nowadays. This study aims to perform the automation of the sewage lifting station "PR36" within SEAAL using programmable logic controllers and the supervision of the station following Siemens' modern technologies. In this context, programmable logic controller is defined as an industrial digital system which has been adapted for the control of manufacturing processes such as sewer systems to provide ease of programming, which is often networked to HMI system for supervision and diagnosis.

Based on documents about operation principle of the station and theoretical background, the architecture and characteristics of S7-1200 and S7-1500 PLCs were described, the program was created with ladder diagram using STEP 7 and the different views of the station were modeled using WinCC with an implementation in HMI system. The simulation shows strong and efficient results in terms of accuracy and protection. The results indicate that automation has a huge impact on the reliability and the productivity of these facilities. On this basis, it is recommended that companies rely on automation in maintaining their products.