07 BRABB_07_New Opportunities V1

Klaus-Peter Brand

April 2006

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New opportunities and cost reduction by IEC 61850

New opportunities

Content

IEC 61850 New opportunities

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Advanced functions Cost reduction

Advanced functions

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Power of IEC 61850

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IEC 61850 is more than a communication standard since it provides a data model and the SCL

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IEC 61850 support peer-to-peer communication on the basis of Ethernet, the mainstream communication technology

Advanced functions

Decentralized automatics

Examples: Decentralized interlocking - Independent communication of all bay units  Decentralized synchrocheck - Automatic selection of the proper VT based on the  substation topology as described by SCL -Sending samples from the remote VT to the  Synchrocheck unit       4      d   n   a    l   r   e   z    t    i   w    S   y    t    i   s   r   e   v    i   n    U    B    B    A    ©

Intelligent load shedding and restoration - Automatic exchange of all data needed 

Advanced functions

Advanced protection schemes

Examples: Breaker failure protection - Independent communication of units involved  including topology detection  Reverse blocking - Exchange of blocking/release signals by serial  communication instead of wires       5      d   n   a    l   r   e   z    t    i   w    S   y    t    i   s   r   e   v    i   n    U    B    B    A    ©

Line protection - extension of the standard according to the NWIP 

Advanced functions

Advanced control schemes

Examples: Point-on-wave switching - supported by the distribution of samples if the  circuit breaker is able to operate precisely  Sequences - Any kind of sequences mean no wiring but only  an extension of the SW to provided the data  needed on the bus       6      d   n   a    l   r   e   z    t    i   w    S   y    t    i   s   r   e   v    i   n    U    B    B    A    ©

Advanced functions

Advanced control schemes

Examples: Point-on-wave switching - supported by the distribution of samples if the  circuit breaker is able to operate precisely  Sequences - Any kind of sequences mean no wiring but only  an extension of the SW to provided the data  needed on the bus       7      d   n   a    l   r   e   z    t    i   w    S   y    t    i   s   r   e   v    i   n    U    B    B    A    ©

Cost reduction 

Cost splitting 

40% for HW

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60% for Engineering and Testing

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Same standard used for all IEDs

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Refurbishment intervals of Substation Automation

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Reduction of life-cycle costs : assumptions

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10 to 15 years

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3 intervals considered per life cycle of the substation

Cost development per interval 

HW with same functionality 25 % decay without, 50 % with standard (market !)

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Engineering and testing

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Engineering and testing

0 % decay without IEC 61850 75% saving with IEC 61850

Cost reduction

Expected impact on life-cycle costs

120

  n   o    i    t 100   a    l    l   a 80    t   s   n 60    i    t   s   r    i    f 40    f   o 20    %

No standard Standard IEC 61850

0

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2

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Installation/refurbishment steps      9      d   n   a    l   r   e   z    t    i   w    S   y    t    i   s   r   e   v    i   n    U    B    B    A    ©

Source : L.Andersson, K.P.Brand, W.Wimmer The Impact of the coming Standard IEC61850 on the Life-cycle of Open Communication Systems in Substations Transmission and Distribution, Brisbane, Australia, 11-14 November 2001