Chronos Technology

New Smart Grid Clock delivering Precise Time to Next Generation Smart Grids

SyncServer®SGC-1500 Smart Grid Clock 

provides microsecond timing accuracy in Smart Grid substations for real-time network operations

Lydbrook, Gloucestershire, UK,4 February 2013, Chronos is pleased to announce the availability in the UK, Denmark and Sweden of the SyncServer®SGC-1500 Smart Grid Clockfrom supply partner Symmetricom, Inc., which meets the stringent microsecond accuracy requirements of Smart Grid substations.

Launched at DistribuTECH in San Diego, USA last week, SCG-1500 is specifically designed for substation operations such as wide area measurement systems, travelling wave fault locators and sampled values and offers power utility companies accurate, secure and reliable timing and synchronisation for their mission-critical operations. This means the power industry will be able to mitigate outages with real-time monitoring for grid stress, frequency instability, voltage instability and reliability margins.

The Smart Grid has brought about power technology advancements that fundamentally change substation operations. Power equipment and their data networks are shifting from simple, reactive control and reporting to proactive, real-time management and operations control. Thus, advanced synchronisation and timing are now more critical than ever, and this is precisely what the SGC-1500 Smart Grid Clock is designed to address; enabling power equipment to operate more efficiently and closer to its operational limits. For example, one microsecond accuracy is required by the phasor measurement unit (PMU) for real-time network situational awareness and overall operational efficiency. Without accurate time stamps, PMU data has limited value. For power utility companies, that translates into enhanced network utilisation rates as well as smarter management and mixing of renewable and traditional power sources.

“SMART GRID architectures require more precise time and timing if they are to deliver the expected real time performance information demanded by new standards. The new substation clock enables operators to cost effectively manage the migration to those next generation architectures.” said Chris Roberts, Business Development Manager at Chronos. He added “We are pleased to offer our customers the Symmetricom substation clock which complements the extensive range of GPS and timing products and services we already provide to customers in the UK, Denmark and Sweden.”  

The SyncServer SGC-1500 meets key requirements of Smart Grid substations, including:

  • Microsecond accuracy and resiliency -- referencing GPS satellite signals, the Symmetricom Smart Grid Clock distributes timing with microsecond accuracy over the local area network (LAN) using the IEEE 1588 v2 Precision Time Protocol (PTP) Power Profile or IRIG-B time code.
  • IEC 61850 -- the International Electrotechnical Commission's (IEC) standards for the design of electrical substation automation, which requires microsecond timing to identify and mitigate a potential fault condition in real time. This standard also identifies important electrical hardening requirements for substation environments.
  • NERC CIP -- the North American Electric Reliability Corporation (NERC) reliability and security standards for Critical Infrastructure Protection (CIP), which calls for high strength security protocols. 

The SyncServer SGC-1500 comes with additional industry leading capabilities such as a built-in IEEE 1588 v2 Telecom Profile input option. This enables the Smart Grid Clock to derive time from the communications wide area network (WAN), thus eliminating the need to have GPS at every substation and PMU. The Rubidium atomic clock option offers holdover capability in the event of GPS disruption. These options result in a highly cost effective and resilient solution for power utilities.