Synchronizing power networks
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The document discusses the need for improved synchronization solutions in power utilities to meet increasing accuracy requirements and mitigate risks associated with GNSS outages. It highlights a transition from current standards like NTP to PTP for enhanced timing accuracy and presents various products and solutions offered by Oscilloquartz to ensure reliable timing. Key innovations include the OSA 5420 as a versatile synchronization tool and the OSA 5401 and OSA 5405 as compact PTP grandmasters.
Synchronizing power networks
- 1. Synchronizing power networks May 2020 Oscilloquartz solution overview
- 2. © 2020 ADVA. All rights reserved.22 Steadily increasing timing requirements Outages of synchronization networks can have catastrophic impact Currently applied sync solutions do not meet actual demand Power utilities urgently need to improve their synchronization architecture Distributed control requires tight synchronization
- 3. © 2020 ADVA. All rights reserved.33 Synchronization accuracy requirements Bulk metering Customer premises metering SCADA: supervisory control and data acquisition Frequency measurement Event recorder Fault localization Synchrophasor: voltage/current with accurate phase 1s 1ms 1µs IRIG NTP PTP
- 4. © 2020 ADVA. All rights reserved.44 GNSS outages need to be mitigated with network-based synchronization delivery IEEE 1588 is necessary for IEC 61850 substation automation and IEEE C37.118 synchrophasor As synchronization is mission-critical, real-time information about sync quality is vital Going from 1ms to 1µs time accuracy requires NTP to be replaced by PTP Challenges Increasing accuracy GNSS vulnerability Lack of visibility Standardization
- 5. © 2020 ADVA. All rights reserved.55 IRIG and PPS provide time information GNSS as highly accurate local time reference Network Time Protocol (NTP) provides msec precision to appliances GNSS time reference Current solutions cannot meet accuracy or availability requirements Substation synchronization – today Migration to Ethernet Protection relay RTU/ SCADA IEDEvent recorder HMI Substation switch IRIG-B, PPS NTP server GNSS clock NTP
- 6. © 2020 ADVA. All rights reserved.66 Precision time protocol for sub-µs timing accuracy Converging PTP, NTP and IRIG-B into single solution Mitigating GNSS outages with network-based backup for highest availability Assuring business continuity by monitoring sync quality Highest accuracy and best availability with satellite and network-based timing Substation synchronization – tomorrow Protection relay RTU/ SCADA IEDEvent recorder HMI Substation switch IRIG-B, PPS PTP grandmaster PTP, NTP ePRTCWAN
- 7. © 2020 ADVA. All rights reserved.77 OSA 5420 – the “Swiss Army Knife“ of synchronization PTP GM/BC type D / slave NTP server SSU Multiple I/F fan-out Sync probe G.8265.1 IRIG-B, PPSG.8275.2 G.8275.1 2G/3G/ 4G/5G FDD BS DOCSIS 3.1 5G-NR/LTE TDD/LTE-A BS NTP61850-9-3/ C37.238 Smart grid PTP power profiles Verticals
- 8. © 2020 ADVA. All rights reserved.88 • Supported on OSA 542X • Up to 2x line cards with OSA 5420 • 10x IRIG outputs (AM and DCLS) • Optional patch panel 1x IRIG-B input 1x optical IRIG output 1x RS-422 output 1x alarm / pulses relay NC/NO 10x IRIG outputs IRIG optical outputs (820nm ST connectors) IRIG AM/DCLS outputs BNC connectors IRIG optical input (820nm ST connectors) to IRIG DCLS output converter IRIG DCLS out outputs 5V/10V BNC connectors Power LED Selection optical/electrical IRIG line card
- 9. © 2020 ADVA. All rights reserved.99 OSA 5401 as power profile grandmaster • Ultra-compact, low power PTP grandmaster – world’s smallest power profile grandmaster • Supports PTP and NTP • Telecom to power profile conversion GNSS IEEE 1588 aware switch featuring PTP TC Protection relay PMU Alarm annunciator Substation gateway QOS meter 61850 LAN PTP IEEE C37.118 NTP OSA 5401 grandmaster
- 10. © 2020 ADVA. All rights reserved.1010 OSA 5405 as power profile grandmaster • Low-profile, low-power PTP grandmaster • Supports PTP and NTP, telecom to power profile conversion • Local PoE and fiber into the building GNSS IEEE 1588 aware switch featuring PTP TCProtection relay PMU Alarm annunciator Substation gateway QOS meter 61850 LAN PTP IEEE C37.118 NTP OSA 5405 GM featuring integrated GNSS antenna Fiber (Ethernet, PTP)
- 11. © 2020 ADVA. All rights reserved.1111 Solution portfolio Various opportunities to enhance accuracy of time distribution OSA 5401 SyncPlugTM: SFP-based cell site PTP grandmaster OSA 5405 SyncReachTM: cell site grandmaster with integrated dual-GNSS receiver OSA 5420/30: edge/core grandmaster featuring 1/10GbE interfaces OSA 3230B: atomic cesium clock for highest precision and longest holdover ePRTC solution Ensemble Sync Director
- 12. © 2020 ADVA. All rights reserved.1212 Today’s power utility timing is not accurate and resilient enough Augmenting NTP with PTP improves accuracy Backing up satellite-based with network- based sync delivers higher availability Oscilloquartz offers an end-to-end solution including sophisticated assurance and management tools When timing gets tough, OSA solutions keep going Summary
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