The IP-enabled grid â€“ more than just smart meters
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The IP-enabled grid – more than just smart meters Henning Schulzrinne Department of Computer Science Columbia University Overview • Motivations: – utilities: • demand reduction (DR) cuts expensive peak power • smart meters avoid meter readers, better outage information • storage management plug-in hybrids as energy storage – consumers: • cost reduction: DR, automated temperature adjustment • convenience: pre-heat/cool home, vacation home monitoring • Integration with other communication technologies Components and Interactions “alert: power outage!” BPL “wash at 1900” “what’s the projected cost of a kWh at 1500?” “charge at 2300” Future developments • Appliances and lights with built-in networks – Zigbee (802.15.4), powerline Ethernet? • Smarter commercial buildings – quantitative standards for energy efficiency rather than LEED list more energy efficient than electronic – occupancy sensors for lighting and heating Need for integration • Notification power outage at your parents’ house • Data aggregation – feed energy usage into neighborhood data base • Other – use cell phone GPS to predict home arrival? – use calendar to track absences? What’s needed? • Avoiding stovepipe systems • No maintenance, no configuration – literally, plug-and-play • Protocol and technology needs: – notification of events – control of devices (heating, appliances, vehicle, …) – discovery of other sensors and devices • Some existing efforts, but often legacy – designed for commercial use (e.g., BACnet) – specific to one L2 technology (e.g., Zigbee) – cumbersome security (manual password configuration) A role for SIP? NOTIFY “power outage!” NOTIFY “new rate: 15c/kWh” MESSAGE “start wash!” Conclusion • Consider system as a whole – including home & building security • Integration with other services – intelligence may not be in meter – not just home-local • Security and zero maintenance: designed in, not bolted on • Role for existing IP communications protocols?