Smart Grid Communication System (SGCS)

Jeff NicholsSr. Director

IT Infrastructure

San Diego Gas & Electric

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DOE Disclaimer

The Department of Energy (DOE) disclaimer must be used. This is a DOE requirement. An acknowledgment of Federal support and a disclaimer must appear in the publication of any material, whether copyrighted or not, based on or developed under this project, as follows: Acknowledgment: "This material is based upon work supported by the Department of Energy under Award Number DE-OE0000371.Disclaimer: "This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof."

- For Internal Use Only -

The Spectrum Issue

As SDGE tried to spec & design a high-performance smart grid communication service, spectrum quickly became the key issue. We looked exhaustively at many options. 700 Mhz, 1.4 Ghz, 2.3 Ghz, 3.65 Ghz, 400 Mhz, 800/900 Mhz, 1.8 Ghz,

TV white spaces…

2.3 Ghz WCS spectrum was the only option that survived our major filters : Availability in our service territory

Affordability

Clear title

Equipment availability

Operational fit

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WCS Spectrum

*Amateur Radio Service has 5 MHz and is directly adjacent to A Block. The Federal Deep Space Receivers live between 2290-2300 MHz**Aeronautical Mobile Telemetry Service operates at the upper adjacent edge between 2360-2395 MHz

Service Design Goals

Service Spec Design Goal

Throughput @ Cell Edge (3 simul users)

1 Mbps on downlink

100 kbps on uplink (per user)

Throughput close to cell

2.6 Mbps on downlink

1.3 Mbps on uplink

Latency Less than 100 ms

Endpoints per cell 256 per sector 768 per 3 sector cell

Backhaul Availability .999995 (2.6 minutes downtime per year)

RAN Availability .99997 (15 minutes downtime per year)

Examples: Smart Grid devices

Pilot Coverage Prediction

SGCS Pilot Coverage Prediction

Policy Issues Going Forward

WCS Continued good partnership with FCC on evolving the operations

requirements in WCS bands

Testing & cooperation with WCS neighbors

Other critical infrastructure spectrum Details on acquisition & usage of 700 Mhz public safety bands

Federal oversight of those bands

State & user governance of resulting shared networks

Cybersecurity requirements on communication infrastructure

Creating a value metric not based on “per consumer”

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Q&A

http://sdge.com/smart-grid-movement

SGCS@semprautilities.com

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