Requirement Analysis of a Signal Database for Power Plant Automation Signals
Audas, Johan (2014)
Kuvaus
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Tiivistelmä
The signal lists used for the control and automation system design of Wärtsilä Power Plants are today made with a spreadsheet software-based configuration tool. The problems with this tool are difficult data maintenance, a large manual workload and traceability of the data of configured signal lists. The maintenance problems are caused by larger power plant sizes, stricter customer requirements and scattered information in different spreadsheet software-files. To solve these problems, a database solution is planned to be developed. In this thesis, the requirements of the database are analyzed, functional descriptions are made and a high-level model of the database solution is created.
The main stakeholders of the database system have been identified and interviews have been held with all of them to gather requirements and get information of current problems related to the creation of the signal lists. The development work is done in close cooperation with the Wärtsilä Power Plants R&D department, project management and control system suppliers. Theory of database design and requirements management is collected from scientific literature. This theory is used to identify requirements in the early phases of the database development and in the creation of a conceptual model of the database.
The goal was to collect the main requirements, create solutions for current problems and to identify possible solutions for the planned database. The results show the large amount of signal data that is today scattered in different sources. Reasons for problems in power plant project work and control system design have been identified and the main requirements for the database solution have been classified. The planned database functionalities are modelled and possible solutions to fulfill the signal list configuration work are presented. New findings of connectivity to other information systems and lifecycle management of the signal design are brought up to meet future requirements of the power plant signal configuration work.
The main stakeholders of the database system have been identified and interviews have been held with all of them to gather requirements and get information of current problems related to the creation of the signal lists. The development work is done in close cooperation with the Wärtsilä Power Plants R&D department, project management and control system suppliers. Theory of database design and requirements management is collected from scientific literature. This theory is used to identify requirements in the early phases of the database development and in the creation of a conceptual model of the database.
The goal was to collect the main requirements, create solutions for current problems and to identify possible solutions for the planned database. The results show the large amount of signal data that is today scattered in different sources. Reasons for problems in power plant project work and control system design have been identified and the main requirements for the database solution have been classified. The planned database functionalities are modelled and possible solutions to fulfill the signal list configuration work are presented. New findings of connectivity to other information systems and lifecycle management of the signal design are brought up to meet future requirements of the power plant signal configuration work.