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Due to the current state of the development of modern information technologies and the emergence of new international standards IEC 61970 and IEC 61968, additional possibilities for solving problems of automation control of energy objects and creation of digital substation appeared. The digital substation is an electrical network with a control, protection and control system and is based on the transmission of information in digital format. The aim of the study is to design a software package for diagnosis of a RPA digital central system, which is one of the elements of a digital substation. In the article we developed the structure of the software complex, described and grouped the data of a centralized RPA diagnosis system, presented its configuration and also considered the RPA configuration. Recommendations are given on how to configure RPA functions based on analysis of their performance using damage location algorithms and reference algorithms. The algorithm of the digital diagnosis system operation of the centralized RPA system is described, and the flow diagram of the diagnosis digital system of the central RPA system is shown. A working example of the client part of the program in the form of an emergency mode rapid analysis protocol is given. The software complex is currently undergoing testing and is in pilot operation.

ARCHITECTURE DESIGNING OF SOFTWARE FOR THE DIAGNOSIS OF A CENTRALIZED RELAY PROTECTION AND AUTOMATION SYSTEM