RELAY PROTECTION DATABASE

Abstract

The article presents the development of a relay protection database through a series of phases. In the planning phase of the database, problems in a typical relay protection department are examined and the reasons why a database should be developed are determined. Subsequently, during the phase of analysis and the specification of requirements, what the database will be used for is defined. In the phase of the formation and construction of the database, its logic is defined and then a physical model is prepared on a computer using the Microsoft Access database management system, which stipulates how the database will operate. The database is placed into operation and verified using actual data. Training is then provided for the future users. The database presented facilitates the systematization, storage and use of a large quantity of data with minimum redundancy. In addition, it provides support during the regular maintenance of relay protection equipment, the issuing of work orders, periodic reporting etc. The relay protection database can be accessed by several users with differing permissions for individual objects of the database. The right to access is defined by the user identity. Furthermore, a special application has been created to simplify searching updating and printing-out of data, which facilitates the display of a series of previously prepared components of the relay protection database. The basic purpose of the application is to allow the user to utilize the full power of Microsoft Access with a minimum of effort and a minimum of required knowledge about database technique and the system for database management.