Ahead of the challenge, ahead of the change. Beyond classical substation How seamless communication networks can be used in special applications

Transcription

1 Ahead of the challenge, ahead of the change Beyond classical substation How seamless communication networks can be used in special applications siemens.com/energy-management

2 Agenda Today s reliability demands and solution HSR Set-up Specifications Assessment Page 2

3 Today s reliability demands and solution Challenges Increasing complexity Standards & legal requirements to be fullfilled Reliability is key Page 3

4 Today s reliability demands and solution Communication within a substation in line with IEC IEC DNP3 TCP Control Center Substation Controller 1 Station bus Control / Inforeport (ca. 500 ms delay time) GOOSE Inter IED Communication (ca ms, dep. on application) Parallel wiring Process bus Circuit Breaker Controller x 3 Sampled Values (ca 2 ms delay time) Digital Instrument Transformer Data via IEC CT VT Page 4

5 Today s reliability demands and solution HSR The next level of redundancy Redundancy with recovery time Dual Homing Link Redundancy Two active links, one is sending, sending link changes if one link is down RSTP Rapid Spanning Tree Protocol Redundancy IEEE 802.1D-2004 Seamless Redundancy Systems PRP Parallel Redundancy Protocol IEC Two active links, both sending, parallel configuration HSR High availability seamless redundancy IEC Two active links, both sending, ring configuration Page 5

6 Agenda Today s reliability demands and solution HSR Set-up Specifications Assessment Page 6

7 HSR Set-up Normal condition Application Application IED IED Redundancy Manager Device interface Redundancy Manager Redbox IED Redundancy Manager IED Redundancy Manager IED Page 7

8 HSR Set-up In case of interference Application Application IED IED Redundancy Manager Device interface Redundancy Manager Redbox IED Redundancy Manager IED Redundancy Manager IED Page 8

9 HSR Set-up Configuration in line with IEC Substation Controller PRP-A PRP-B 2 Redboxes SIPROTEC devices with integrated HSR switch Redboxes distributed in the ring Seamless Rings with up to 50 devices Up to 50 SIPROTEC devices per ring. PRP-Switch HSR HSR Ring HSR Redbox PRP-A connection PRP-B connection Page 9

10 HSR Set-up Restrictions (50 +) Substation Controller PRP-A Up to 50 SIPROTEC devices per ring. PRP-B 2 Redboxes SIPROTEC devices with integrated HSR switch Redboxes distributed in the ring Seamless Rings with up to 50 devices Due to: duplicate discard algorithm Performance PRP-Switch HSR HSR Ring HSR Redbox PRP-A connection PRP-B connection Page 10

11 Agenda Today s reliability demands and solution HSR Set-up Specifications Assessment Page 11

12 Specifications Duplicate discard implementation methods Hardware Constrains: Memory usage à with sufficient Memory more than 50 nodes in a ring possible Response time à fast search (table of entries) DANH A unicast sender DANH B unicast receiver DANH C Δt 1 HSR ring Δt 2 Page 12

13 Specifications Duplicate discard implementation methods Source MAC SeqNr. Source MAC SeqNr. Source MAC Source MAC Source MAC SeqNr. SeqNr. SeqNr. Source MAC SeqNr. max window Source MAC SeqNr. max window Source MAC SeqNr. max window Source MAC SeqNr. Source MAC SeqNr. max window Table of entries Easy to implement Sliding window Reduced Memory Consumption Independent from legacy network load Fast scan possible Page 13

14 Specifications Store & Forward vs. Cut Through Ethernet frame according IEEE (with 802.1Q VLAN-Tag) Store & Forward Switch starts forwarding a packet after the whole frame has been received and the integrity has been checked Cut Through Switch starts forwarding a packet before the whole frame has been received, normally as soon as the destination address is processed Page 14

15 Specifications Cut Through at same speed with all data volumes 140 Average Latency (us) Store & Forward Cut Through (SIPROTEC) Unicast (1536 Byte) Unicast (720 Byte) Unicast (200 Byte) Unicast (72 Byte) Broadcast (64 Byte) Multicast (180 Byte) Multicast (140 Byte) Cut Through Switching guarantees deterministic and fast packet transmission Page 15

16 Specifications Examples of data volume for Store & Forward vs. Cut Through Examples Unicast of 720 Byte over 50 Hops: Store & Forward 2985,45 us Cut Through 275 us Unicast of 720 Byte over 100 Hops: Store & Forward 5970,9 us Cut Through 550 us Page 16

17 Agenda Today s reliability demands and solution HSR Set-up Specifications Assessment Page 17

18 Assessment HSR Highlights HSR: High level redundancy through cost effective ring network structure. Combinable with PRP network. Sliding window duplicate discard algorithm performance independent from ring size High performance Cut-Through switching for low latency HSR is capable of more than 50 devices per ring Check application for bandwidth / maximum latency requirements Siemens solutions offer a wide variety in long year field proven as well as state of the art redundancy protocols Page 18

19 Assessment Advantages outbalance PROs Seamless reconfiguration No recovery time High availability Retrofitting on existing module One common network Cost effective through ring configuration Approved IEC Standard Safes investment CONs Standard Ethernet components (e.g. PC) can be connected only via a RedBox Page 19

20 Thank you for your attention! Holger Heine Product Lifecycle Manager Protection/Substation Automation Energy Management Division EM EA PRO LM1 Humboldtstr Nuernberg Germany Phone: Mobile: Page 20