Cigré/Brasil
CE B5 – Proteção e Automação
Seminário Interno de Preparação para a
Bienal 2006
Rio de Janeiro, setembro/06
Dados do Artigo
• Número
 206
• Título
 Use of an Integrated AC/DC Special Protection
Scheme at Manitoba Hydro
• Autoria
 Narinder S. Dhaliwal*, J. Brett Davies, David A. N. Jacobson
Manitoba Hydro, Winnipeg, Canada
 Richard Gonzales – Excel Engineering, Minneapolis, USA
• País
 Canada / USA
Objetivo
After briefly presenting the Manitoba Hydro electrical system and
highlighting some of the difficulties experienced under high import /
export conditions (namely that the loss of any one of the
interconnection lines without remedial action can result in cascading
tripping of all the remaining ties between the Manitoba Hydro system
and the U.S., Ontario and Saskatchewan systems, resulting in
islanding of the Manitoba Hydro system), this paper describes the
use of an integrated AC/DC special protection scheme to maintain
system stability following loss of any of the Manitoba to U.S. tie lines.
The importance of the described SPS translates into sustained high
export levels and corresponding gains. The SPS has shown high
reliability and maintainability degrees through appropriate design
and triplication of equipments.
Objetivo
Use of an Integrated AC/DC Special Protection Scheme at Manitoba Hydro
Objetivo
Destaque
Dúvidas
1. Que tipo de dispositivo e qual o tempo de latência das informações de fluxo?
2. Qual é a ação do Controller para múltiplas contingências?
3. Se o SPS não utiliza o sistema de votação e as informações são duplicadas,
qual a vantagem de ser triplicado os controllers?
Conclusões
Respostas às questões do REP
• Número da questão
 2.3
• Questão
 Papers 203 and 206 address the importance of Special Protection
Schemes (SPS) for the interconnected operation of large HV systems (AC
and/or DC). Both recognise that reliability of protection, control and
telecommunication equipment plays a pivotal role in SPS performance.
This has led to duplication and, in one case, triplication of devices.
• How important are communication issues (availability, reliability,
etc.) for the implementation of SPS? Have any risks been
identified involving overfunction in case of duplication/triplication
of equipments? Have any misoperations been experienced that
have had an influence on decisions concerning systems’
maintenance?
• Resposta: