Erich W. Gunther Chairman and CTO - EnerNex Corporation Chairman UtilityAMI, OpenHAN, AMI-SEC erich@enernex.com
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1 Field and Device Technologies: Consumer Portals, Home Area Networks and Connected Devices Erich W. Gunther Chairman and CTO - EnerNex Corporation Chairman UtilityAMI, OpenHAN, AMI-SEC erich@enernex.com
2 What is a Consumer Portal? A combination of hardware and software that enables two-way communication between energy service organizations and equipment within the consumers premises.
3 What could a portal look like? A consumer portal is an idea, not a particular device! EPRI IntelliGrid is developing a reference design A standard virtual appearance for a portal A clearly defined set of interfaces May be incorporated into a variety of devices May be distributed among several devices The physical device(s) may vary, but the virtual device must be standardized to ensure Interoperability between vendors Reduction in cost due to economies of scale Some vendors already provide portal-like devices, but they are not standard and not interoperable.
4 What could a portal look like? Some Options: PLC Portal in a meter Portal in a set-top box ADSL ` Portal in a stand-alone device or PC Portal in a local energy management system
5 Intelligently Connecting the Utility to Customers Enable Energy Smart Customers Integrated information from utility Payment options (e.g., pre-payment) Outage & service condition information Support rate option innovations Manage Distributed Resources Economic dispatch of load resources Dispatch of load for grid management Intelligent net metering Management of distributed energy resources Operational Efficiencies Field communication links to distribution Revenue cycle improvements Situational data in near real-time Wholesale - retail markets integration Built with the future in mind Upgradeable WAN/HAN communications Leverage open architecture principles in system design Future customer service offerings
6 Utility/Consumer Interface Architecture Options Meter as sole gateway to HAN Support use cases Lowest cost, meets business case Can be implemented over 4 years ubiquitously to all 5 million customers Seen as starting point for eventual shift to customer gateway controlled HAN Meter as interface to in-home gateway (with protocol converter as needed) Supports use case Higher cost, may require customer knowledge / configuration Seen as eventual end state over life of system Third party gateway(s) only to load control devices Slow market adoption could take 10 years to reach 70% market penetration like internet Does not support near-real time access to energy data from meter at no incremental cost to customer Security, network management, QOS more challenging If challenges met, compatible with overall architecture Avoids meter interface technology obsolescence
7 Scenario A: Meter as Gateway Third-Party Provider Private Fixed Networks WAN/LAN Meter Utility Owned interval energy time billing start time peak power messages acknowledgements price signals reliability signals RDS/FM or pager broadcast (disabled when utility network operational) 1-way T24 PCT RF-TX 1 Appliance Consumer Owned Sub-meter 1.e.g., b, proven mesh LAN protocol, etc. Display Devices
8 Scenario B: Evolution to Multiple Gateway Model Private Fixed Networks WAN/LAN Any interval meter or pole-top collector Utility Owned interval energy time billing start time peak power messages acknowledgements price signals reliability signals RF-TX 1 and/or PLC-TX² Third-Party Provider PSTN/DSL/Cable/Satellite WAN/LAN Any gateway (protocol xfr) Special box Internet modem Router Media PC Security panel.. Broadband TV, music Third-Party Provider HAN Protocols³ Zigbee Z-wave Insteon Wi-Fi EIA709 HomePlug Bluetooth RDS/FM or pager broadcast Third-Party Provider 1-way Third-Party Provider T24 PCT HAN access using expansion port Sub-meter Appliances 1.e.g., b, proven mesh LAN protocol, etc. 2.To be determined 3.Up to 45 active protocols worldwide Consumer Owned Display Devices Ron Hofmann
9 Scenario C: 3rd Party Communication Channel/Gateways Only interval energy time billing start time peak power messages acknowledgements price signals reliability signals utility.com Third-Party Provider PSTN/DSL/Cable/Satellite WAN/LAN Third-Party Provider Third-Party Provider Third-Party Provider RDS/FM or pager broadcast Private Fixed Networks 2 WAN/LAN Any interval meter Any gateway (protocol xfr) Special box Internet modem Router Media PC Security panel.. HAN Protocols³ Zigbee Z-wave Insteon Wi-Fi EIA709 HomePlug Bluetooth 1-way T24 PCT HAN access using expansion port Other Utility Owned Broadband TV, music Appliances 1.Utility information to/from utility network 2.Up to 45 active protocols worldwide Consumer Owned Display Devices Ron Hofmann
10 Example Interface Technologies WiFi Standards based, multi-channel, widespread application, industry association Complex configuration, no inherent mesh/range extension Transport only no application layer application models ZigBee Mesh network, robust, products available, industry association Standards based, multi-channel, interference mitigation Need well defined information models work in progress HomePlug PLC Simple, robust, products exist, industry association Was proprietary alliance supported, moving toward standardization IEEE P1901 Transport only no application layer application models Cannot reach thermostat without a gateway ZWave Mesh network, robust, products available, industry association Proprietary, single frequency ( MHz), no agility mechanism Need well defined information models work in progress
11 Technology Summary None of the technologies have standardized application layer information models must be developed PLC ruled out as sole interface due to need to reach thermostat and other devices not reachable by PLC (e.g. gas meter) All ISM band based devices subject to interference Testing and applications in home environments confirm ability of MAC and application layers to effectively mitigate interference between ZigBee and WiFi IEEE MAC and PHY only Metering Applications exist in the upper layer control the network, metering and load control applications IEEE LLC IEEE /915 MHz PHY Upper Layer Stack IEEE MAC Other LLC IEEE MHz PHY
12 Adverse Scenario Mitigation The following adverse scenarios were evaluated 1. Interface technology versions quickly 2. Interface technology becomes obsolete in general marketplace 3. Interface technology becomes compromised due to increasing interference 4. Interface technology becomes compromised from a security perspective Mitigation Firmware upgrade capability handles scenario 1 Market power could facilitate long term support by third parties of a specific version freeze and mitigate scenarios 1 and 2 (discussed at UtilityAMI HAN meeting) Adding a utility or third party provided gateway mitigates scenario 2 The ability to remotely disable the meter interface and utilize third party networks and gateways mitigates scenarios 3 and 4
13 Going Forward Select best comm technology to support utility applications over at least a 5 year time horizon ZigBee is a leading candidate Consider possibility of PLC interface in meter gateway in addition to / instead of wireless supports concept of keeping simple, slower to change technologies on the utility side of the interface Plan to support information exchange (1 way e.g. digital KYZ) with third party in home gateways through published information models Ensure back office architecture can support third party communication channels and gateways to implement load control use cases in event of meter gateway interface technology obsolescence Ensure that cost of meter gateway interface technology is minimal so that stranding it does not adversely impact overall business value (e.g. RDBS in the Title 24 thermostat)
14 California Programmable Communicating Thermostat CEC Title 24 Building Standards Current code mandates PT s 2008 revision mandates PCT s Specifies minimum requirements Points of Interoperability Communications Interface California WAN - RDBS California WAN - RDBS HVAC Interface Standard Terminals Human Interface Standard Nomenclature Expansion Interface Communications options Memory cards Firmware upgrade
15 Communications Interface - WAN
16 Expansion Interface - MMC MMC System Specification Version 3.31 Serial Peripheral Interface (SPI) Optional: MMC version 4.1 or SDIO version 2.0
17 Communications: Messaging Model Description of Messages & Data Payloads Required for the CEC Title 24 PCT Specification Messages Recognize Two Basic System Event Modes Price Events Emergency Events
18 Industry Activities UtilityAMI General Requirements OpenAMI Vendors building stuff OpenHAN HAN Requirements AMI-SEC Security Geeks Only OpenPCT Title 24 Implementation AMI-Enterprise SOA for MDMS / CIS UCA International Users Group UCAIUG Technical Committee Intelligent Grid Subcommittee UtlityAMI Working Group OpenHAN Task Force AMI-SEC Task Force OpenAMI Working Group Data Model Task Group Reference Design Task Group AMI-ENT Task Force Interoperability Task Group
19 References Questions?
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