Circuit breakers are used in a power system to break or make current flow through power system apparatus. Reliable operation of circuit breakers is very important to the well-being of the power system. Historically this is achieved by regular inspection and maintenance of the circuit breakers. An automated online circuit breaker monitoring system is proposed to monitor condition, operation and status of high and medium voltage circuit breakers. By tracking equipment condition, this system could be used to perform maintenance only when it is needed. This could decrease overall maintenance cost and increase equipment reliability. Using high accurate time synchronization, this system should enable development of system-wide applications that utilize the data recorded by the system. This makes possible tracking sequence of events and making conclusions about their effect on-line. This solution also enables reliable topology analysis, which can be used to improve power flow analysis, state estimation and alarm processing.

Circuit breakers are used in a power system to break or make current flow through power system apparatus. Reliable operation of circuit breakers is very important to the well-being of the power system. Historically this is achieved by regular inspection and maintenance of the circuit breakers. An automated online circuit breaker monitoring system is proposed to monitor condition, operation and status of high and medium voltage circuit breakers. By tracking equipment condition, this system could be used to perform maintenance only when it is needed. This could decrease overall maintenance cost and increase equipment reliability. Using high accurate time synchronization, this system should enable development of system-wide applications that utilize the data recorded by the system. This makes possible tracking sequence of events and making conclusions about their effect on-line. This solution also enables reliable topology analysis, which can be used to improve power flow analysis, state estimation and alarm processing.

Submitted by JOSIANE SANTOS DE OLIVEIRA (josianeso) on 2017-11-17T15:53:07Z No. of bitstreams: 2 Luiz Antonio Canal_.pdf: 1988745 bytes, checksum: 60112cf8ea6029ecad19839973234379 (MD5) Luiz Antonio Canal_.pdf: 1988745 bytes, checksum: 60112cf8ea6029ecad19839973234379 (MD5) / Made available in DSpace on 2017-11-17T15:53:07Z (GMT). No. of bitstreams: 2 Luiz Antonio Canal_.pdf: 1988745 bytes, checksum: 60112cf8ea6029ecad19839973234379 (MD5) Luiz Antonio Canal_.pdf: 1988745 bytes, checksum: 60112cf8ea6029ecad19839973234379 (MD5) Previous issue date: 2017-09-05 / Nenhuma / A busca pela maior segurança industrial em plantas petroquímicas tem sido a pauta principal deste tipo de negócio, já que a possibilidade de acidentes é potencializada pela própria natureza da operação, que envolve inventários inflamáveis, combustíveis ou tóxicos. Muitos dos iniciadores destes eventos advêm de mau funcionamento de seus equipamentos dinâmicos, como motores, bombas e compressores, com causas ligadas a manutenção, operação ou projeto. Neste contexto, é proposto neste trabalho um método para a implantação de melhorias e projetos direcionados para o monitoramento contínuo de equipamentos dinâmicos. O objetivo é de aumentar a segurança industrial e a disponibilidade dos equipamentos, já que o contínuo monitoramento dos equipamentos permite uma melhor supervisão dos mesmos, além de fortalecer a manutenção preventiva baseada em condição. Será apresentada a solução focando no monitoramento de temperatura e vibração em mancais, que normalmente são foco da maior parte das falhas em equipamentos dinâmicos. Inicia-se pela escolha do método para priorização da implantação, baseado em análise multicritério e análise de risco, passando pela proposição e definição dos critérios, culminando com a exemplificação do trabalho em uma planta petroquímica real. Como resultado tem-se uma matriz de risco para apoio na priorização de investimento em monitoramento contínuo, agregando ainda simulações de análise de sensibilidade para a tomada de decisão. / The search for greater industrial safety has been the main guideline in petrochemical business, since the most of accidents are potentiated by the own nature of the operation, which involves flammable, combustible or toxic inventories. Many of the initiators of these events arise from the malfunction of their dynamic equipment, such as motors, pumps and compressors, with causes related to maintenance, operation or design. In this context, it is proposed a method for the implementation of improvements and projects directed to the continuous monitoring of dynamic equipment. The main objective is to increase the industrial safety and the availability, since the continuous monitoring allows a better supervision of the dynamic equipment, besides strengthening the application of condition based maintenance policy. The solution will be presented focusing on the monitoring of equipment temperature and vibration, which indicate of most failures or a situation of non-appropriated operation. This work starts with determining the method to prioritize the implementation, based on multicriteria and risk analysis, explain the criteria and their definition, culminating with the exemplification of the work in a real petrochemical plant. As a result, a risk matrix is presented for support in the prioritization of investment in continuous monitoring, also adding sensitivity analysis simulations for decision making.

The aim of this work is to develop algorithms for analyzing time series obtained from the digital process bus streams of a digital substation. The paper addresses issues related to enhancing the observability of digital substation equipment and identifying faults through non-destructive testing methods. During the research, models were created to simulate typical faults. Based on the obtained data, the most informative parameters were selected and formulated, which serve as the input data for the developed algorithms. The developed analysis algorithms were tested on data obtained during the simulation. / Целью настоящей работы является разработка алгоритмов анализа временных рядов, получаемых в составе цифровых потоков шины процесса цифровой подстанции. В работе рассматриваются вопросы повышения наблюдаемости оборудования цифровой подстанции и определения неисправностей посредством методов неразрушающего контроля. В ходе работы созданы модели для симуляции характерных неисправностей. На основании полученных данных, выбраны и сформированы наиболее информативные параметры, которые служат исходными данными для разработанных алгоритмов. Разработанные алгоритмы анализа параметров работы протестированы на данных, полученных в ходе моделирования.

This thesis deals with constructive -technological solutions of construction of two residential buildings A and B in Uničov. The thesis includes preparation and construction site equipment, technological prescription for implementation of anhydrite floors, time schedule and financial plan of construction, project budget, monitoring and test plans, instructions for maintenance, fire problem solution and security plan for requirements of the EMS.