RADs Tele -Protection solution Empowering communications for a - - PowerPoint PPT Presentation

Solutions for Power Utilities for ISM 2013 Slide1

RAD’s Tele-Protection solution

Empowering communications for a smarter grid

Presented by:

Solutions for Power Utilities for ISM 2013 Slide2

Outline

• Introduction
• Teleprotection solutions
• Line Differential
• Traffic Duplication
• Distance TP
• Teleprotection over PSN
• Case studies
• Summary

Solutions for Power Utilities for ISM 2013 Slide3

RAD Data Communications

• The Service Assured Networking Company:

– Focusing on service provider, power utility, transportation and government connectivity solutions – Main value proposition:

• Power Utility, Transportation and Government – resilient and

secure evolution to more efficient and modern packet network technology

• Service Providers – increased revenues and reduced total cost of
• wnership
• Established in 1981; 1,000 employees worldwide
• Global installed base of more than 12 million

units

• Privately owned member of the

$1.2 billion RAD Group of companies

Solutions for Power Utilities for ISM 2013 Slide4

RAD in the Utilities Market

RAD is the preferred communications vendor for many energy utilities and system integrators around the world

Solutions for Power Utilities for ISM 2013 Slide5

RAD Tele-protection Solution

WAN

SDH/SONET Carrier-grade Ethernet

Smart Grid BH

Wired

• Fiber
• Copper

Multiservice Secure Ethernet Wireless

• P2P, P2MP
• 3G/GPRS

Network Management

Operational network

Transmission and Distribution Distribution

Smart Meters,

• Dist. Automation

Substation

Automation & Protection Communication Tele-protection

Solutions for Power Utilities for ISM 2013 Slide6

Teleprotection Connectivity

Future-proof design Performance guarantees Support for both Differential and Contac relays

Challenges

Implementation in various network topologies Hybrid TDM-Ethernet architecture Designed for minimal delay Variety of Protection interfaces

Solutions

Transfer TP over SDH/PDH and/or PSN

Solutions for Power Utilities for ISM 2013 Slide7

Communication Requirements between Protection Relays

Purpose: to improve the reliability of the Protection Relays operation, to shorten and ensure a fast isolation of the affected area in the Transmission Network. Services

• Transfer of Contacts / Signals
• Differential Protections Communication

Implementation

• Copper Cables
• Pilot Wire
• P(ower) L(ine) C(arrier)
• Microwave
• Direct Fiber Optic Connection
• Multiplexers via Fiber Optic Connections
• Multiplexers via Network (SDH or IP)

Solutions for Power Utilities for ISM 2013 Slide8

Basic requirements for communications of TP commands

• Very high reliability of commands transmission ( different protection

and redundancy mechanisms)

• Very small End-to-End delay between sub-stations (up to 10mSec)
• High resistance to electromagnetic influences
• Support of different transport networks (Fiber Optic, TDM. Packet ) and

different topologies

• Low Jitter and High Delay stability over any network technology

MP-4100/4104 satisfied all of this requirements

Solutions for Power Utilities for ISM 2013 Slide9

RAD Tele-protection Solution

• One Solution support both Contacts Distance Relays and Differential

TP delivery over TDM or IP network

• Reduce CapEx and OpEx by using single-box solution for all

substation communications services, including Voice, Data, Automation and Tele-protection signals

• Maintain performance levels for mission critical applications when

migrating to packet networks Solution Highlights

C37.94, X.21, V.35, E&M, E1/T1, Contacts

Teleprotection Unit

Substation Substation

Teleprotection Unit

PDH/SDH/ SONET Network or Point-to-Point Dark Fiber or PSN

Megaplex

C37.94, X.21, V.35, E&M, E1/T1, Contacts

Megaplex

Solutions for Power Utilities for ISM 2013 Slide10

Examples for Tele-protection vendors

Typical Megaplex solution for Differential TP

Teleprotection Unit

Substation

Teleprotection Unit

PDH/SDH/ SONET Network or Point-to-Point Dark Fiber or PSN

Substation

Megaplex

C37.94, X.21, V.35, E&M, E1/T1,

E1/T1, STM-1/4, Eth E1/T1, STM-1/4, Eth

Relay Relay

Megaplex Megaplex

C37.94, X.21, V.35, E&M, E1/T1,

Solutions for Power Utilities for ISM 2013 Slide11

SDH Ring over DWDM Ring

Case Study – Terna, Italy

• Each SDH transport the Teleprotection interface plus other tributaries:

as CISCO Router (via V.35 &/or Ch.E1)

• Ring Coupling is made via the DWDM backbone (future)

Control Center

GbE

SDH Ring over DWDM Ring

Megaplex-4

Teleprotection PBX Voice Teleprotection Voice

Megaplex-4 Megaplex-4

SCADA Teleprotection LAN Voice

Megaplex-4

Differential TP Relay : Siemens 7SD52x, C37.94 Using RAD HS-F module

Solutions for Power Utilities for ISM 2013 Slide12

Traffic Duplication

Solutions for Power Utilities for ISM 2013 Slide13

RAD Confidential Information

What is Traffic Duplication?

Traffic Duplication sends traffic to both the SONET/SDH network and the Carrier-grade Ethernet network. The duplicated traffic can traverse an existing IP, MPLS or Ethernet network connectivity – improving reliability without increasing expenses. Traffic Duplication can be performed using the Megaplex-4 advanced Hybrid Connectivity capability to transport in parallel identical real-time mission critical traffic streams on both SDH/SONET network as well as on Carrier-grade Ethernet network. Traffic Duplication offers:

• Better resiliency
• Gradually build up your PSN through the enablement of redundancy
• Make available additional bandwidth for non-mission critical IT traffic
• Future-proof network readiness for phased or full migration to PSN.

The power utility may maintain a dual network topology and gradually migrate to a complete Carrier-grade Ethernet network

Solutions for Power Utilities for ISM 2013 Slide14

Traffic Duplication for Gradual Network Migration

• Utility may stay with dual network topology or migrate to complete

Ethernet at his choice

SDH/SONET

Ethernet

SDH/SONET

Ethernet

Solutions for Power Utilities for ISM 2013 Slide15

How “Traffic Duplication” supply reliable migration path for TDM traffic? Example of Differential Teleprotection

PSN G.8032 Ring SONET/SDH

• Three duplications of the TDM traffic – 2 x STM-1/4 uplinks and Ethernet uplink
• E2E protection over two technologies – SDH and PSN
• Recovery in sub 50 msec.
• 5-10 times Lower latency due to Carrier-grade Ethernet fast performance
• Better resiliency
• Future-proof network readiness for phased or full migration to PSN.

Eth

Megaplex Megaplex

Eth

PW PW

C37.94 RS-232, V.xx TP Relay TP Relay C37.94 RS-232, V.xx

Solutions for Power Utilities for ISM 2013 Slide16

Distance TP

Solutions for Power Utilities for ISM 2013 Slide17

Implementation of Distance TP

There are 3 typical ways of implementing Teleprotection: 1. Stand alone Teleprotection equipment

• ABB, Siemens, Alstom, RFL, Selta , ZIV

2. Teleprotection integrated in distance protection

• ABB, Siemens, Alstom, SEL

3. The RAD way: Teleprotection interface included in Telecom equipment Advantages:

• All in one technology , reduced wiring compare to stand alone , less

equipment so more reliability for the complete protection scheme

• Monitoring capacity through an NMS
• Enable integration of additional service (Voice and Data)

Solutions for Power Utilities for ISM 2013 Slide18

Substation C Substation B Substation A

Typical Megaplex solution for Distance Contacts Tele-Protection

Topology description

• Dedicated MP-4100/4 for Distance Contacts
• Up to 40/16 commands in a single MP-4100/4
• Connectivity over F.O. to a communication MP-

4100/4 in the communication room

• The MP in the Comm. Room concentrate multiple

Distance TP MP-4100/4 + additional Voice and RTU’s traffic

Control Center

SCADA Controller

Communication House Telecom Control Center

NMS

OP

SDH/E1/ETH

E1/SDH/PSN Network

Relay Relay Contact In/Out Contact In/Out MP-4100/4 RTU

FO

Megaplex-4100/4 Relay Relay MP-4100/4

Voice

Solutions for Power Utilities for ISM 2013 Slide19

Teleprotection Communications – Key Performance Criteria (IEC 60834)

• Between the moment of change of state at the transmitter input and the

receiver output

Transmission Time

• Valid commands in the presence of interference and/or noise, by minimizing

the probability of missing command (PmC)

Dependability

• Preventing false tripping due to a noisy environment, by minimizing the

probability of unwanted commands (PuC)

Security

• Bandwidth consumption and resiliency also impact performance

Other

Performance criteria pose a challenge over non-deterministic packet transport and require enhanced, carrier-grade capabilities

Solutions for Power Utilities for ISM 2013 Slide20

Preventing Unwanted/Missed Commands (PUC and PMC)

• Command Channel Bring-Up Criteria

– E1 Sync – Command Channel Sync – Address Validation – CRC check

• In service Command Channel monitoring

– Errored Frame – Low BER (10^-3 threshold) – High BER (2 out of 6 frames)

• Out Of Service Command Channel

– Freeze/Open/Close

Solutions for Power Utilities for ISM 2013 Slide21

Commands transport protection levels in the MP-4100

• << 50msec, Done in CL.2, by HW, based on SDH
• verhead

Link

• << 50msec, Done in CL.2, by HW, based on VC-12
• verhead

VC-12

• < 50msec, Done in CL.2 on timeslot level
• Logical E1 ports over PW, SDH and FO
• Physical E1 ports

E1

• Sub 10msec, Done in HW in TP module

CMD channel

• 0 msec, HW redundancy between modules. Require

parallel wiring between two modules

TP Module

Redundancy hierarchy from the TP interface up to the communication link ensure 0mSec (Zero) hardware protection and Sub 10mSec E2E delay

Solutions for Power Utilities for ISM 2013 Slide22

MP-4100 MP-4104

# of modules 10 4 # of input commands 40 16 # of output commands 80 32

Distance Tele-protection support – CMD In/Out

• 4 input commands
• 8 output commands

– 4 Primary commands, 4 Secondary commands – For each secondary command one primary command can be selected – More than one secondary command can be bounded to one primary command

• Event time stamping based on IEC‐60870‐5‐104
• Event reporting: Commands, Automation, End‐to‐End Delay,

Violations, Bit Error Rate

• Hardware-based processing prevents mutual influence between

commands

Solutions for Power Utilities for ISM 2013 Slide23

Command Input/output Electrical Characteristics

• Input
• Output - The output circuit will sustain at least 250V ,0.25A on

an inductive load.

• Connector - The terminal output will allow connecting wires

up to 2.5 sq. mm

Nominal Input Control voltage (Jumper controlled) +/-220VDC or +/- 110VDC . Input control voltage point for 220V 160V Input control voltage point for 110V 80V Input control voltage preset duration time (filter) adjustable 0-5ms in steps of 0.5ms.

Solutions for Power Utilities for ISM 2013 Slide24

Tele-protection over Packet Switched Network (PSN)

Solutions for Power Utilities for ISM 2013 Slide25

Pseudo-wire (PWE) Encapsulation

• Pseudo-Wire provides encapsulation of TDM (Tele-protection) traffic
• ver packet switched networks while ensuring TDM service quality
• Pseudowire Technology Enablers: TDMoIP, CESoPSN, HDLCoPSN and

SAToP

• Pseudowire server module for MP-4100/4
• Supports 128 PW connections

IPmux-24

Central Site

GBE GBE FE FE/GBE

PSN

Megaplex-4100/4 Megaplex-2100/4 Megaplex-4100/4

Solutions for Power Utilities for ISM 2013 Slide26

Two options when migrating to packet communications:

• Continue using TDM connectivity for Teleprotection in parallel to new

packet network installations for non-critical substation traffic

• Hybrid TDM/PSN multiplexers and access nodes save on network

equipment costs

• Use Ethernet or packet network for Teleprotection, provided it can

guarantee required performance

• Delivery of TDM-based Teleprotection signals over packet requires

pseudowire emulation

Tele-protection Connectivity over PSN

Solutions for Power Utilities for ISM 2013 Slide27

Teleprotection Communications Performance: Latency Budget

• Most power line equipment can withstand a

brief shortage/irruption

• Typical requirement for total fault clearance

time = 100ms

• Actual operation time of protection systems =

70-80% of this period

• Including fault recognition, command

transmission and line breaker switching

• Large electromechanical switches take up the

majority of time

• In modern applications, contact transfer is

expected in 10ms or less

Solutions for Power Utilities for ISM 2013 Slide28

Case Study – Elia Belgium PoC for Differential TP

• ver Cisco MPLS

Solutions for Power Utilities for ISM 2013 Slide29

PoC highlights

• RAD’s Megaplex-4100 multiservice access platform was

successfully tested by a major energy utility

• TDM data received from protection units was converted into

packets, then transmitted over an MPLS network employing static routing

• The line differential protection equipment featured a variety of

TDM communications interfaces, including G.703, X.21, RS-232, E&M, C37.94, Native E1

• End-to-end communication delay requirement of 8-10ms in a

packet network environment experiencing a jitter of 2.5ms

• Also required symmetrical latency with maximum tolerance of 100-

250μs

• Protection equipment tested:
• Siemens, 7XV5653, X.21
• ABB, NSD570, C37.94
• AREVA, P54x (SPACS II), G.703

Solutions for Power Utilities for ISM 2013 Slide30

Test Results

RAD’s Teleprotection multiplexers have successfully met requirements:

• Up to 5ms delay with quality of service for signal priority via shaping

and traffic engineering tools

• Clock accuracy was rigorously maintained throughout transmission
• High degree of resiliency through various protection schemes, including

DS1-level redundancy

Solutions for Power Utilities for ISM 2013 Slide31

TPoPSN Conclusions

• Critical Teleprotection applications require special attention in the

move towards Smart Grids and next-generation networks

• Viable alternatives to existing deployments need to meet exacting

performance criteria of minimal transmission time, reliability and security

• Extremely low, symmetrical delay, robust clock accuracy, QoS

assurance, resiliency, and on-going performance monitoring are “must have” elements for any Teleprotection over packet system

• Hybrid TDM/Packet solutions allow utility operators the freedom to

choose the migration path that best suits their needs and budgets

Solutions for Power Utilities for ISM 2013 Slide32

Case Study – Distribution company in Norway –

Won project for Distance & Differential TP over Cisco MPLS

Solutions for Power Utilities for ISM 2013 Slide33

Field Trial (Jan. 2013)

• Distance and Differential TP over Cisco MPLS
• Runs in a field trial for months after completing Lab test

successfully

• Planed for actual deployment this year

Distance Protection card Differential C37.94 protection card

Solutions for Power Utilities for ISM 2013 Slide34

Megaplex-4100 Megaplex-4100

Solution Topology

Distance TP Relay : ABB, RED670 Using RAD Distance TP module

Solutions for Power Utilities for ISM 2013 Slide35

Case Study – Endesa Spain Lab Trial for Differential TP

• ver Ethernet

Solutions for Power Utilities for ISM 2013 Slide36

Trial Objective

• Delay measurement of two MP4100, directly connected
• Using PWs vs classical E1.
• Different Customer Interfaces (Serial 9.600, 19200, nx64, …)
• Different PW configuration

Solutions for Power Utilities for ISM 2013 Slide37

Two-Way Delay using RS-232 over Ethernet (Pseudo-Wire)

Note The measurment is 11.75mSec for two-way. One-way end-to end delay over Eth is 6ms!

Solutions for Power Utilities for ISM 2013 Slide38

Teleprotection Connectivity

• ver PSN
• Customer requirements:
• Under 10ms E2E delay (depending on interface – sub 5ms)
• Under 250µs asymmetrical delay

Differential and Distance Teleprotection over PSN: Successful PoC in Spain, Belgium, Norway and others

Serial, C37.94

trip relays SDH/SONET or Carrier-grade Ethernet Pseudowire Low latency HW Timing over Packet PSN

Solutions for Power Utilities for ISM 2013 Slide39

Summary

Solutions for Power Utilities for ISM 2013 Slide40

Why RAD TP solution?

• Wide range of TP interfaces - Serial, G.703 Co-Dir, E&M,

C37.94 to extend Differential TP Relay over TDM and Ethernet networks

• Tested Inter-op with most of the TP contact relays leading

vendors (Alstom, ABB, Siemens, SEL, Schneider,…)

• Distance TP trip commands (in/out) interfaces integrated

into RAD Hybrid communication multiplexer.

• Download comprehensive Teleprotection over Packet

Solution Paper

Solutions for Power Utilities for ISM 2013 Slide41

The RAD Advantage:

• Operational WAN
• Substation Multiservice

Migration

• secure Substation

Ethernet LAN

• Low Voltage Site

Backhaul

• Continued TDM

Support

• Industry-specific

Interfaces

• Next-generation

SDH/SONET

• Pseudowire
• Hybrid Design
• Carrier-grade Ethernet
• Timing over Packet
• Cyber Security

Broad Solution Portfolio Migration expertise Technology Innovation

Solutions for Power Utilities for ISM 2013 Slide42

www.rad.com

Thank You For Your Attention