Cigré/Brasil
CE B5 – Proteção e Automação
Seminário Interno de Preparação para o
Colóquio do SC B5 2009
Rio de Janeiro, 15-16 de setembro de 2009
Dados do Artigo
• Número: 118 PS1 CH
• Título: Life-time maintenance strategies for SA
systems today and tomorrow
• Autoria: W. Baass, K-P. Brand, M. Herzig
• País: Suiça
Objetivo
• This paper considers both the today’s life-time maintenance strategies
for legacy SA systems and the tomorrow’s ones for IEC 61850 based
SA systems.
• It compares both strategies and make conclusions for the trend in lifetime maintenance of SA systems.
Destaques
The SA system life cycle
Today’s Maintenance of Legacy SAS
• Typical life-time of equipment in the substation
General Maintenance Strategies
• Keep the system documentation up-to-date
• Analyze the data provided by self-supervision for
• Fast failure detection
• Detailed and comprehensive information
• Appropriate actions
• Take preventive actions within predefined time intervals
• Internal tests
• Test with external test equipment
•Tests without or with the switchgear
Tomorrow’s Maintenance of IEC61850 SAS
•
Schematic diagram of control levels in SA and the connections in between
Characteristics of IEC61850 based SAS
• Station bus, process bus, GOOSE, unconventional instrument transformers
• SCL provides a lot of benefits for the tomorrow’s life-time maintenance
• Powerful self-supervision and advanced test tools based on SCL
• Less periodic tests with longer intervals might be applied
Comparison of Life-time Maintenance today and tomorrow
• Actions in life-time maintenance of SA systems today and tomorrow
Dúvidas
• No questions
Conclusões
•
•
•
•
Both for legacy systems and IEC 61850 based systems life-time management
strategies are definable. The first ones need a reasonable effort because of the
lot of non-standardized actions, limited self-supervision and paper-based
documentation restricting the use of tools for life-time maintenance.
IEC 61850 based systems provide all information from the configuration to selfsupervision in a standardized form. This standardization and the on-line
documentation are in favor of powerful tools for life-time maintenance.
The life-time maintenance performance will be further improved by Edition 2 of
IEC 61850 [5] scheduled for 2010. It will provide more standardized data, more
version identification indices and the clarification of the Mod/Beh data attribute
values test and test-blocked from Edition 1.
Utilities are getting a lot of new maintenance features with IEC61850 based SA
systems. Maintenance issues, testing methods and tools should be considered
when evaluating SA systems. The result should guide the utilities to use the
right methods, tools and training for their maintenance tasks.
Respostas às questões do REP
• Número da questão: 1.5 - Monitoring of system performance - Several
papers mention the continuous analysis of the performance of
protections and automation systems as a key element of the utility
maintenance.
• Questão: Which database, experiences or applications allow to give
recommendations for the maintenance strategy of SAS? What are the
resulting recommendations or conclusions?
• Resposta: A autosupervisão de equipamentos (IEDs) é utilizada
desde a introdução da tecnologia numérica. Neste aspecto, inúmeras
empresas alteraram seus procedimentos de manutenção, tendo em
vista que os eventuais problemas são reportados imediatamente.
Outras experiências, como SNMP, também demonstram a validade do
monitoramento contínuo como uma boa recomendação para
estratégias de manutenção.
Respostas às questões do REP
• Número da questão: 1.6 - Organisation of SAS maintenance - The
organisation of SAS maintenance, including its outsourcing, depends
both on the characteristics of the systems and on overall strategies
defined by each utility.
• Questão: Which methods and organisation have been adopted by
utilities and by vendors to maintain conventional SAS and Digital SAS
and what are the differences in the approaches for the maintenance of
these two types of SAS?
• Resposta: Entende-se que tipicamente os sistemas convencionais e
digitais são tratados de maneira particular. Cada um requer
ferramentas (tanto HW quanto SW) e procedimentos individuais.
Respostas às questões do REP
• Número da questão: 1.7 - Training and documentation - There seems
to be a consensus concerning the need of updated, comprehensive
and easily accessible documentation related to DSAS. The complexity
of these systems also requires a high level of training.
• Questão: In this context, which efforts are put into place by the industry
aiming at guaranteeing a satisfying level of both documentation and
training?
• Resposta: O entendimento é de que novas documentações estão
sendo geradas a partir das experiências e das novas necessidades,
vivenciadas nos desenvolvimentos dos projetos. Os treinamentos têm
obedecido os requisitos normais destes fornecimentos, além de fóruns
e eventos relacionados.
Respostas às questões do REP
• Número da questão: 1.8 - Version management - The management of
configurations, settings, firmware and hardware versions is identified in
several papers as a key element for the management of the life-time
maintenance of Substation Automation Systems.
• Questão: Which approaches are used by the industry to meet this
requirement? Which actions should be put into place by vendors and/or
by utilities in order to keep the control and overview of deployed
hardware and software versions?
• Resposta: Os arquivos SCL permitem controle de versões de
arquivos. O essencial é o desenvolvimento de ferramentas capazes de
gerenciar estas informações, e de controlar eventuais revisões.
Respostas às questões do REP
• Número da questão: 1.12
• Questão: Remote Access - Which use of remote access for the
maintenance of DSAS is possible and how is remote supervision used
at this moment? What are the constraints identified by users and
vendors?
• Resposta: Alguns usuários ainda solicitam portas de comunicação
separadas para o gerenciamento de manutenção, ao passo que a rede
Ethernet permite que apenas uma rede seja configurada, tanto para o
SCADA quanto para a engenharia/manutenção.