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Challenges and Benefits of a Unified Synchronism Network

Explore the complexities and advantages of a unified synchronism network in the telecommunication sector. Learn about modern network design, Smart Grid integration, and the critical role of synchronicity in network operations.

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Challenges and Benefits of a Unified Synchronism Network

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  1. Challenges and Benefits of a Unified Synchronism Network Rodrigo Leal, Msc Engineer Colloquium on Smart Grid November 13-15, 2013 MYSORE – KARNATAKA - INDIA

  2. Eletrobras The biggest company of the electric power sector in Latin AmericaEletrobras is the leader of a system consisting of six subsidiary companies (Eletrobras Chesf, Eletrobras Furnas, Eletrobras Eletrosul, Eletrobras Eletronorte, Eletrobras CGTEE and Eletrobras Eletronuclear), six distribution companies, the Electric Power Research Center (Eletrobras Cepel) and Eletrobas Participações S.A. (Eletrobras Eletropar) and is also holder of 50% of the capital stock of Itaipu Binacional.

  3. The biggest generator of electricity of the Brazil, with 10.618 MW of installed power

  4. LUIZ GONZAGA Power Plant 1,500 MW THE PRESENCE OF CHESF IN NORTHEAST OF BRAZIL

  5. Planning Telecommunication Business PlanHorizon 2018

  6. Scope The Telecommunication Business Plan considered the transformation of the several systems in compliance with all requirements of Electric Sector and of the new services demands. • Transport Network • Synchronism • Wide Area Network (WAN) • Unified Communications (UC) • Video Surveillance • Wireless Network (WiFi) • Security • Quality of Service

  7. Telecom Business PlanTransport Network The new telecommunications transportation networks will utilize high capacity optical systems. In the high traffic regions, the transmission backbone will adopt the OTN (Optical Transport Network) technology, at 10 Gbit/s.

  8. In the design of networks should be considered the new needs such as IPv6, high availability, QoS, security, load balancing, multicast, and others.

  9. Introduction General Aspects of Smart Grid

  10. Concept of Smart Grid • Superstructure digital overlapped a power grid • Main functions: • Sensoring (remote detection) anddistributed measurements; • Embedded processing; • Advanced Integration in Network; • The purpose is to make the chain of delivery of electric power: • Observable; • Reliable • Automatable; • Integrated; Telecommunications standard, transparent and reliable with security and synchronism form the basis of this network Need for interaction between the network, devices and business processes. Perhaps this is the most difficult task, due to the diversity of all existing components.

  11. Automation system of substation or next generation substation withoutGOOSE (Generic Object-Oriented Substation Events) Overview of the use cases of Substation Automation (SA) Distribution of accurate timeat the substation Automation system of next generation substationwithGOOSE Automation of substation with Phasor Measurement Unit (PMU) Physical security of substation Managing of the remote workforce of substation Remote access to devices of substation Management of network and of the security Substation Automation (SA)

  12. Use cases and architecture solutions AdvancedMeteringInfrastructureAMI DistributionAutomation(DA) Managing the workforce Inventory management Distributed intelligence Resource Management Telecom Meshof RF Meshof PLC FLIR Volt/VAR DER IEEE 802.15.4g IEEE 1901.2 IEC 61850, IEC 60870, ModBus, etc. ... ... ... ... Servicesof gateway of FAN Services time distribution (time, phase, and frequency) high-precision Security and security management Management of telecommunications network (configuration, fault, performance, security, accounting)

  13. Use cases and architecture solutions AdvancedMeteringInfrastructureAMI DistributionAutomation(DA) Managing the workforce Inventory management Distributed intelligence Resource Management Telecom Meshof RF Enhanced accuracy of time (of <50 ms to <4ms, or in some cases, in the range of µ seconds) Meshof PLC FLIR Volt/VAR DER Infrastructure unique, exact, precise, redundant, reliable, resilient and managed of synchronism IEEE 802.15.4g IEEE 1901.2 IEC 61850, IEC 60870, ModBus, etc. ... ... ... ... Servicesof gateway of FAN Services time distribution (time, phase, and frequency) high-precision Security and security management Management of telecommunications network (configuration, fault, performance, security, accounting)

  14. Use cases and architecture solutions AdvancedMeteringInfrastructureAMI DistributionAutomation(DA) Full control of the performance of network services (connectivity, quality of service, administration and maintenance of network services) Managing the workforce Inventory management Distributed intelligence Resource Management Telecom Meshof RF Meshof PLC FLIR Volt/VAR DER IEEE 802.15.4g IEEE 1901.2 IEC 61850, IEC 60870, ModBus, etc. ... ... ... ... Integrated management of heterogeneous network (based on the integrated inventory, physical and logical, of the network resources) Servicesof gateway of FAN Services time distribution (time, phase, and frequency) high-precision Security and security management Management of telecommunications network (configuration, fault, performance, security, accounting)

  15. Current Situation Synchronism of the Network

  16. Traditional Situation Current: Synchronism separate networks Telecommunications networks has their own synchronism Synchronism of frequency sent by the line signal (SDH or E1) The control of the electric power system has their own synchronism Synchonism of time and phase, with GPS receivers distributed and copper cables dedicated on site

  17. Current Synchronism Network • The synchronism network consists of the distribution of frequency from a network of clocks spread all over the area of ​​CHESF. • The synchronism network uses a hierarchical structure with the primary reference clocks (PRC), that provide reference to the rubidium clocks and quartz by the network. • The primary reference originates from seven GPS own and each of the GPS serves, currently, no more than five SDH network elements (NEs), cascaded.

  18. Requirements of precision of the time in the automation applications of the electric sector: • SCADA: 1 s • DistribuitionAutomation:100 ms • SubestationAutomation (sequence of events): 1 ms • Process Bus: 10 ms • Syncrophasores: 1 ms SynchronismandSmart Grid “Merging Units are the intelligent electronic devices that enable digital communication over the Ethernet network using sampled measured values between the process level and the bay level. Merging Units continuously measure multiple analogue CT/VT values from primary equipment and digitise them according to IEC 61850-9-2 standard. Data shifted at the receiving IEDs by just microseconds will result in the protection algorithm not working properly.”

  19. Sensor Collector Sensor Switch Switch Sensor timing Sensor MasterClock Why IEEE 1588? • It is necessary to transfer: • The exact time and accurate to IEDs, without requiring a point to point parallel system (out of band); • By the Industrial LAN IEEE 802.3 (within band); • Support wireless networks (IEEE 802.11, IEEE 802.15.4 e IEEE 802.16).

  20. Default Profile Defined in the Annex J. /1588 Industrial Automation (V1) Power Profile Defined in the standard IEEE C37.238 – LAN of substation All switches must have the function of "transparent clocks" Telecom Profile Defined by ITU-T (G.8265.1) – Telecommunication (WAN) – To transfer frequency in applications of Telecommunications • Common profile for use of the PTP (IEEE 1588-2008) for protection, automation and data communication insystems electro-energetic, over an Ethernet communications architecture; • Dedicates special attention to ensuring a distribution of time consistent and reliable within substations, between substations and across wide geographic areas. Profile IEEE 1588-2008 • IEEE 1588-2008 …

  21. Network ElementsIEEE 1588 • Ordinary clocks (Grandmasters and slaves) • Boundary Clocks Regenerate PTP messages, eliminating the delays found in the path (path delay); usually, implemented in switches or distributors equipped with internal clocks • Transparent Clocks These are switches with the ability to measure and notify called "residence time" (delay between input and output of packages IEEE1588).

  22. RecommendationsSubstation Clocks • Usardois GMCs comorelógios de SE Use two GMCs as clocks SE • The choice between them is through the Best Master Clock algorithm • Use GPS location • Equipping GMC with rubidium • Provide GMC with slave function IEEE 1588 Telecom Profile • Provide signal IEEE 1588 Telecom Profile of SSU remote by telecommunications network (to cover failure of the GPS) • Specify carefully substation clocks

  23. Network Redundant Topology IEEE PC37.238 ITU-T (G.8265.1), PTP telecom profile LAN LAN GMC backup GMC main PTP PTP PTP PTP IEEE PSRC (C37.238) , PTP power profile PMU MU: merging unit P: relay of protection C: controller : Switch Ethernet

  24. Infrastructure Integrated of SynchronismMultiple Reference 1ª GPS 2ª IEEE 1588 PTP telecom profile Grandmaster remote PTP with telecom profile 3ª Rubidium ensures about 8 days of holdover <26μs (1% TVE) Holdover of rubidium

  25. Recommendations Intra-site Distribution • Use industrial switches with Transparent Clock(P2P) • The TC function accumulates less error that the function BC • TC P2P implementspeer delay measurement • Measures and provides the full delay to the GMC or BC higher • Measures including the links blocked • In case of reconfiguration, already know the delay for any of their ports up to the GMC or BC higher (convergence immediate) • Use converters IEEE 1588v2 Power Profile to IRIG-B in the external area (for legacy devices) • Manage all equipment of distribution synchronism • Specify carefully all switches and distributors of clock

  26. Relays House Time distribution in the substation • … Present Gatewayof substation • and Future Alarms PMU Switchof substations 61850 LAN • IEEE PSRC (C37.238) Power Profile Protection Relay Protection Relay Substation Clock GPS IRIG-B Bus/NTP E1/2048 kHz IRIG-B PPO ADM • IRIG-B AM/DC • DCF77 • Local time • UTC time RTU Recorder Protection

  27. Example of implementation GMC main E1/2048 kHz (Telecommunications) PTP PTP E1/2048 kHz (Telecommunications) GMC backup PTP PTP IEEE PSRC (C37.238) , PTP power profile Switch LAN main Switch LAN Backup PTP PTP Converter PTP - IRIG-B IRIG-B IRIG-B IRIG-B IEDs Smart IEDs IRIG (legacy)

  28. Proposal Unified Network

  29. Challenges and Benefits • Challenges • Functional structure with separated areas • Telecommunication • Automation • Information Technology • Modus operandis to be implemented • Benefits • Reduction of investments. • Reliable • Robust • High availability • Managed • Sharing maintenance

  30. Conclusion Suggested that the synchronism network operated by telecommunications can also be used, with clear advantages for other sectors of the company, and be prepared to attend the new requirements, with optimization of investment, improvements in the operation and sharing maintenance of the network, and consequent cost reduction .

  31. Thanks

  32. Thank you! धन्यवाद Rodrigo Leal de Siqueira rodrigol@chesf.gov.br Tel: +55 (81) 3229.4319

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