RAD’s Tele -Protection solution Empowering communications for a smarter grid Presented by: Solutions for Power Utilities for ISM 2013 Slide 1
Outline • Introduction • Teleprotection solutions • Line Differential • Traffic Duplication • Distance TP • Teleprotection over PSN • Case studies • Summary Solutions for Power Utilities for ISM 2013 Slide 2
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 ownership • 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 Slide 3
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 Slide 4
RAD Tele-protection Solution Transmission and Distribution Distribution Substation WAN Smart Grid BH Smart Meters, Automation Operational & Protection Dist. Automation network Communication Wired • Fiber SDH/SONET Multiservice • Copper Carrier-grade Tele-protection Wireless Ethernet • P2P, P2MP • 3G/GPRS Secure Ethernet Network Management Solutions for Power Utilities for ISM 2013 Slide 5
Teleprotection Connectivity Future-proof design Hybrid TDM-Ethernet Challenges Solutions architecture Performance guarantees Designed for minimal delay Support for both Differential Variety of Protection and Contac relays interfaces Implementation in various Transfer TP over SDH/PDH network topologies and/or PSN Solutions for Power Utilities for ISM 2013 Slide 6
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 Slide 7
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 Slide 8
RAD Tele-protection Solution Substation Substation Megaplex Megaplex Teleprotection Teleprotection C37.94, X.21, V.35, C37.94, X.21, V.35, Unit Unit E&M, E1/T1, Contacts E&M, E1/T1, Contacts PDH/SDH/ SONET Network or Point-to-Point Dark Fiber or PSN Solution Highlights • 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 Solutions for Power Utilities for ISM 2013 Slide 9
Typical Megaplex solution for Differential TP Substation Substation Teleprotection Teleprotection Unit Unit Relay Relay C37.94, X.21, C37.94, X.21, V.35, E&M, E1/T1, V.35, E&M, E1/T1, Megaplex Megaplex Megaplex E1/T1, STM-1/4, Eth E1/T1, STM-1/4, Eth PDH/SDH/ SONET Network or Point-to-Point Dark Fiber or PSN Examples for Tele-protection vendors Solutions for Power Utilities for ISM 2013 Slide 10
Case Study – Terna, Italy Teleprotection Teleprotection Megaplex-4 Megaplex-4 PBX SDH Ring over Voice DWDM Ring Voice Control Center Megaplex-4 Megaplex-4 SDH Ring over GbE DWDM Ring Differential TP Relay : Siemens 7SD52x, C37.94 Using RAD HS-F module LAN SCADA Teleprotection Voice • 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) Solutions for Power Utilities for ISM 2013 Slide 11
Traffic Duplication Solutions for Power Utilities for ISM 2013 Slide 12
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 RAD Confidential Information Solutions for Power Utilities for ISM 2013 Slide 13
Traffic Duplication for Gradual Network Migration SDH/SONET Ethernet Ethernet SDH/SONET • Utility may stay with dual network topology or migrate to complete Ethernet at his choice Solutions for Power Utilities for ISM 2013 Slide 14
How “Traffic Duplication” supply reliable migration path for TDM traffic? Example of Differential Teleprotection PW PW PSN G.8032 Ring Eth Eth TP Relay TP Relay SONET/SDH Megaplex Megaplex C37.94 C37.94 RS-232, V.xx RS-232, V.xx • 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. Solutions for Power Utilities for ISM 2013 Slide 15
Distance TP Solutions for Power Utilities for ISM 2013 Slide 16
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 Slide 17
Typical Megaplex solution for Distance Contacts Tele-Protection Telecom Control Substation C Center Substation B Substation A NMS Communication House RTU Megaplex-4100/4 SDH/E1/ETH E1/SDH/PSN Control Center Voice Network SCADA OP Controller FO Topology description MP-4100/4 MP-4100/4 • Dedicated MP-4100/4 for Distance Contacts • Up to 40/16 commands in a single MP-4100/4 Contact In/Out Contact In/Out • Connectivity over F.O. to a communication MP- 4100/4 in the communication room • The MP in the Comm. Room concentrate multiple Relay Relay Relay Relay Distance TP MP-4100/4 + additional Voice and RTU’s traffic Solutions for Power Utilities for ISM 2013 Slide 18
Teleprotection Communications – Key Performance Criteria (IEC 60834) Transmission Time • Between the moment of change of state at the transmitter input and the receiver output Dependability • Valid commands in the presence of interference and/or noise, by minimizing the probability of missing command (PmC) Security • Preventing false tripping due to a noisy environment, by minimizing the probability of unwanted commands (PuC) Other • Bandwidth consumption and resiliency also impact performance Performance criteria pose a challenge over non-deterministic packet transport and require enhanced, carrier-grade capabilities Solutions for Power Utilities for ISM 2013 Slide 19
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 Slide 20
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