Embracing next generation telecommunications technologies ......5 27 years experience in creating...
Transcript of Embracing next generation telecommunications technologies ......5 27 years experience in creating...
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Embracing next generation telecommunications technologies enabling smart grids and substation automation
20 %
Francis Baestaens
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Agenda
• Introduction to OTN Systems
•Choosing the best telecom technology for power utilities
•SDH migration
•Network Management
•Network hardware
•Features for power utilities
•Who is using it?
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Introduction to OTN Systems
March, 2018
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27 years experience in creating industrial network solutions
• A worldwide market leader o Electricity, water and gas utilities
o Metro & Railways
o Most Oil & Gas Majors
o ITS, Airports, Mining, …
• 500+ customers in 75+ countries
o High loyality & recurring
• 17.000 nodes in operations
o Running flawlessly for many years
Power Utilities
Electric
Transport
Gas&
Oil
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Delivering the critical network element for industrial networks
Power Utilities
Electric
Transport
Gas&
Oil
OTN Systems
Network Solutions
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… as part of an end to end solution for Operational Telecom
Power Utilities
Electric
Transport
Gas&
Oil
Network Equipment
Network Management
Services& Support
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Choosing a next generation telecommunicationstechnology for power utilities
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Smart Grids
• Power o production
o Transport
o consumption
• Telecom required foro Managing Energy flows
o Control, metering
o Grid Protection
o Auxiliary services
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Telecom should be “invisible” for Industrial customers
• Reliable – always on
• Secure and ruggedized
• Deterministic – no surprises
• Easy to install and manage – also for non-Telecom experts
• Safe – with an extended life time up to 25 years or more
• Enabling smart grid applications & substation automation
Power Utilities
Electric
Transport
Gas&
Oil
SDH
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TDM technology phasing out
What ?
• SDH = used for leased lines, backbone infrastructure of telcos, but already phased out since 10 yearso In SA Telkom is closing down the last Diginet services
• PDH = access technology for appliances, telemetry, SCADA, voice, HVM, teleprotection, signalling
Why ?
• 95% has already phased out
• Closing of component factories
• Need for more bandwidth & flexibility
• Applications already using packet technologies
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The right technology pick: MPLS-TP
IP/MPLS Ethernet MPLS-TP
Reliability ++<50ms convergence per
service
+ <50ms network protection
++<50ms convergence per
service
Security +L2 and L3 toolset
+L2 toolset
+L2 toolset
Traffic
engineering++
Flow based
engineering/QoS
-No network wide QoS
++Flow based
engineering/QoS
Deterministic -Dynamic behavior control
plane
-Only applicable in limited
topologies
++Static provisioned APS via
OAM
Monitoring -Need deep network
knowledge
-Lack of NMS
++Full NMS and OAM
Ease of Use -Complex stack of
protocols
+ Pure Ethernet based
++ NMS driven approach
• Telecom is a rapid changing environmento Driven by large Service Providers and Enterprise
customers
• MPLS-TP is the enabling technology to support a smooth operationo Confirmed by many users all over the world
o Complex Service Provider solutions (e.g. IP/MPLS)
put a lot of pressure on the operational staff
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Main telecommunictions requirements
• Connection orientedo Paths through the network are predefined
• Bidirectional pathso Traffic flows in a symmetrical way
• Static control planeo The full control is in the Network Management System
• Logical topologieso Ring, subring, point-to-point, point-to-multipoint
• Complete monitoring of each link by default (“hello” packets every 1-5ms)
VC-12/2Mbps
STM-1/155Mbps VC-4/140Mbps
SDH
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Technology comparison
SDH
IP/MPLSMPLS-TPCarrier Ethernet
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Challenges for Operational Telecom (1)
Introduction Growth Maturity
MPLS for OT MPLS for IT
Decline
SpecializedSDH/SONET
SDH/SONET
Forced to a technology leap by much bigger industries
Power Utilities
Electric
Transport
Gas&
Oil
Transformation is inevitable
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Challenges for Operational Telecom (2)
Struggle for talent
Power Utilities
Electric
Transport
Gas&
Oil
Responsible for OT and many other things30y+ experience in OT but knows little about packetWill retire in less than 10 years
IT expertExperience in routing and switchingNo clue about OT
New packet platform must have an easy step-in
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The optimal product for Operational Telecom
20 %
ProductizationMPLS-TP
Technology
Power Utilities
Electric
Transport
Gas&
Oil
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Migration from SDH to MPLS-TP
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Migration from SDH to MPLS-TP: How ?
Transparent: • connect all existing applications
• Seamless integration
Simple:• No overly complex telco solutions
• Short training
• Intuitive to manage
• Single core
Future proof:• Supporting latest application
evolutions
• Scalable
• Long lasting (at least 15 years)
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TDM
Packet
TDM
TDM
Packet
TDM
Packet
PacketNow
1. Keep SDH in service during transition 2. Build a parallel network or extend with XTran3. Migrate to packet
Service continuityFall back (risk mitigation)Optimized MPLS network• Efficient• Flexible• Future proof
Future
SDH Migration and extension to MPLS-TP – 1-step migration
Transparent forapplications
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Recent CIGRE publication June 2016
“MPLS-TP in the context of operational telecom seems to be the appropriate technology when going to packet”
• Migration from SDH
• Maintaining full control of the Network
• Quality of Service and deterministic behavior
• Size of network and type of traffic
• Capability versus complexity
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MPLS-TP node deployment environment – typical topology
Distribution
Substation
Transmission
Substation
Generation
Substation
Distribution network
High voltage grid
Dispatching center
SCADA
VOICE
Data
Power ranges 220-240VAC, 18-300VDC
Low consumption from 33-150W
Operational Telecom
Operational Telecom Operational Telecom
Mission critical
Operational applications
Optional DWDM network
Wholesale
Datacenter traffic
IT traffic
…
Easy
NMS
SNMP
Umbrella
Management
Platform
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Network availability & Easy network management
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What is network availability?
Availability is determined by:
• MTBF of the hardware (mean time between failure) – expressed in years (e.g. 35)
• Redundancy of the hardware (power supply, controller card)
• Redundancy of the network (multiple paths, backup)
Availability Unavailable time (31 days)
99,9% 2678 seconds or 44,6 minutes
99,99% 268 seconds or 4,5 minutes
99,999% 27 seconds or ½ minute
Switch-over time between controller cards shouldbe in order of miliseconds to guarantee service continuity
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Easy network management
A management system should be
• Intuitive with short learning cycle (a few days)
• Clear and easy to use
• Application oriented
• Not requiring direct CLI access foro Troubleshooting
o Configuration
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Total Cost of Ownership
Maintenance
Installation
Training
Updating
Complexity
Equipment Cost
Unavailability
CAPEX
OPEX
MPLS-TP / XTRAN Other Equipment
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TXCare: Easy network management & operation
Plan & design
TX = Takes care of your network
C = Configuration Management
A = Assurance Management
R = Resilience Management
E = End-to-end Management
Provision
& Program
Troubleshoot
Assure &
measure
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Network hardware
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XTRAN: MPLS-TP platform made of Industrial hardware
• Fan-less / extended temperature range
o -30°C to +65°C
• EMC hardened
o IEC61850-3 / IEEE 1613 / EN 50121-4
• Ethernet and IP interfaces
• PDH interfaces: G703, Serial, E1, FXS, E&M
• Teleprotection interface: C37.94
• Flexible power options (wide input range)
• Rugged industrial design
o Stainless steel
o Compact 19” or DIN rail mountable
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IEEE 1613 – Vibration/Chock testing
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Hardware & firmware operation
• Deterministico SDH-like
o No surprizes
• Total controlo Complete Provisioning and monitoring
via NMS
o Full control
• High availability due to redundancyo Achieving 99.999% availability
• Cyber secure and virtually invisibleo OSI Layer 2.5
o Door-closing measures
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Features for power utilities
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Substation communication
Protection
relay/SCADA
C 37.94, G.703, E1…Substation Switch
RTU
Function Function Function
IEC 61850 Process Bus
Substation Switch
Network Transport
node
Ethernet (10/100/1000)
Ethernet (10/100/1000/10000)
IEC104 (Ethernet)
SCADA, HVM, telemetry,…
IEC101 (RS232/422/485, E&M, G703, E1) Ethernet, IP
PMU
Synchrophasors
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Tuned For Time Critical Applications
Enhanced Delay
Control©
NMS Driven Emulation Settings
Strict Traffic Engineering
Bidirectional Co-routed
LSPs
Buffer Equalization
Clock Drift Prevention
Hitless Switching
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Can delay be controlled ?
Factors that influence delay/latency
• Link distance: every km of fiber introduces 5µs of delay
• Industrial MPLS-TP nodes averagely introduce 8µs of delay
• Dejitter buffer (allow a high-speed network to connect to a low-speed network)
• Delay Compensation buffer in case 1+1 scenario is usedo Paths with different length
Delay/latency CAN and MUST be controlled
to have reliable transmission over MPLS
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Most sensitive application: current differential protection
• Based on comparison of measured values
• Difference means that there is a fault existing
• Comparison of similar measurement is essential
• Variation of transmission time “looks” like a fault current for the relay
• Performance criteria are based on• End-to-end delay variation
• Differential delayBalance between DEPENDABILITY and RELIABILITY
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Evaluated by the experts
• The University of Strathclyde, in Glasgow, UK, hosts the Institute for Energy and Environment,
• The Technology and Innovation Centre (TIC) has a laboratory for testing novel power systems research
• Worldwide recognition
Differential Protection
Relay
Differential Protection
Relay
C37
.94
1G 1GXTRAN (200)
C37
.94
SDH SDHSTM-11G 1G
XTRAN (100) XTRAN (300)
10G
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Evaluation results & conclusion
• MPLS-TP using hitless switching is thebest technology for power
• All expected results were reached
• MPLS-TP remains easy to operate even in large networks
End-to-end delay < 6ms
Differential delay < 400 µs
MPLS-TP performed as predicted and industry
values were respected under all conditions
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Tuned For Time Critical Applications
Enhanced Delay
Control©
NMS Driven Emulation Settings
Strict Traffic Engineering
Bidirectional Co-routed
LSPs
Buffer Equalization
Clock Drift Prevention
Hitless Switching
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NMS Driven Emulation Settings
• Smart Network Management Software
• Service based settings –network wide
• Automatic Calculation:o Bandwidth & delay
• Prevent asymmetric delay
• Hitless switching settings
• Offline & online mode
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Control & design the delay to your applications
Optimized for
delay
PDH C37.9
4
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Tuned For Time Critical Applications
Enhanced Delay
Control©
NMS Driven Emulation Settings
Strict Traffic Engineering
Bidirectional Co-routed
LSPs
Buffer Equalization
Clock Drift Prevention
Hitless Switching
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Strict Traffic Engineering
• XTran is designed to provide full control of the traffic behavior
• Prevent network wide asymmetric delay
• External data will not influence the behavior of the system
• Traffic Engineering is managed network wide by TXCare NMS
• Traffic policing done on the ingressof the XTRAN network
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Tuned For Time Critical Applications
Enhanced Delay
Control©
NMS Driven Emulation Settings
Strict Traffic Engineering
Bidirectional Co-routed
LSPs
Buffer Equalization
Clock Drift Prevention
Hitless Switching
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Bidirectional Co-routed Paths
3ms
5ms
3ms
• MPLS-TP Characteristic (standard RFC 5654)
o Associated Bidirectional path
o Co-routed
• Both directions are setup, monitored and protected as a single entity through TXCare NMS
• Prevent asymmetric delay
• Always & native behavior
3ms
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Tuned For Time Critical Applications
Enhanced Delay
Control©
NMS Driven Emulation Settings
Strict Traffic Engineering
Bidirectional Co-routed
LSPs
Buffer Equalization
Clock Drift Prevention
Hitless Switching
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Buffer Equalization
2 ms
3 ms
2 ms
Equalization
2 ms
• Buffers are equalized to guarantee stable & lossless operation
• Prevent asymmetric delay
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Tuned For Time Critical Applications
Enhanced Delay
Control©
NMS Driven Emulation Settings
Strict Traffic Engineering
Bidirectional Co-routed
LSPs
Buffer Equalization
Clock Drift Prevention
Hitless Switching
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Clock Drift prevention
• In some use cases there may occur a clock difference between two directions, eg. below where RX is disconnected (A-side).
• To avoid this, XTran maintains the timing over the circuit emulation stream but using a slip buffer on the packetization side A.
• Result is that the clock towards B remains constant and no differential delay is build up.
• Prevent asymmetric delay
X
Internal Clock
SLIP BUFFER
Adaptive
A B
A-Clock
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Tuned For Time Critical Applications
Enhanced Delay
Control©
NMS Driven Emulation Settings
Strict Traffic Engineering
Bidirectional Co-routed
LSPs
Buffer Equalization
Clock Drift Prevention
Hitless Switching
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TDM Based 1+1 Protection switching
LER LERLSR LSR
LSR
MPLS-TP Protection
Must be guaranteed < 50ms
LER LERLSR LSR
LSR
Hitless Switching
0 ms, 0 loss, stable delay
SAToP
CESoP
SAToP
CESoP
Adaptive
Differential
SyncE
RS232
4WE&M
G703
E1
C37.94
RS232
4WE&M
G703
E1
C37.94
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Ethernet Based 1:1 Protection switching – MPLS-TP
LER LERLSR LSR
LSR
Lineair Protection
Must be guaranteed < 50ms
LER LERLSR LSR
LSR
Logical Ring
Must be guaranteed < 50ms
Ethernet
Or IP
based
services
Ethernet
Or IP
based
services
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Who is using it ?
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Who is using MPLS-TP ?
• USA & Europe/ANZ: smaller DSO companies
o Mainly used for accurate and deterministic substation automation
o Migration of critical apps like Scottisch power
• LAM: large DSO/TSO like CFE Mexico
o Complete SDH migration and substation automation ongoing
• Middle East: decided to go for MPLS-TP (90%)
o Saudi Electric Company, FEW/SEWA/DEWA UAE, OETC Oman
• Africa & Aisa: still mainly on SDH
o Leading utilities like EETC Egypt have decided for MPLS-TP
o Most still on SDH but increasing maintenance & shortage
• Russia/CIS: Decision for MPLS-TP has been taken
o First pilots ongoing at Rosseti and affiliates
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XTran: some references
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Conclusion
• Smart grids and automated substations require an accurate and deterministictelecommunications network
• SDH will not be suitable and not available
• MPLS-TP is objectively the best next generation packet technology
• Vendors focusing on vertical industrial markets develop purpose built equipment
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XTRAN offers new opportunity's.
Let’s make the change together!