Drahtlose Kommunikation für Energiemonitoring i i und -optimierung Stuttgart, Haus der Wirtschaft,

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1 Drahtlose Kommunikation für Energiemonitoring i i und -optimierung i Stuttgart, Haus der Wirtschaft, Dipl.-Ing. Dipl. Wirt.-Ing. Duale Hochschule Baden-Württemberg Lörrach Steinbeis Innovationszentrum Embedded Design und Networking 1

2 Contents Who we are? ch.1 AMR a short introduction definition application i & installation i examples challenges ch.2 AMR architectures ch.3 AMR standards & promises ch.4 own developments ch.5 summary 2

3 Steinbeis Centers Embedded Design & Networking sizedn & stzedn established 2002 alliance memberships currently 12 engineers +fr freelances stzedn: industrial projects sizedn: research on wireless and wired networks 3

4 ch.1.1: AMR definition & motivation Definition: automatic meter reading (AMR) is the technology of automatically collecting data from metering devices and transferring that data to a central database for billing and/or analyzing AMR is gaining (and will continue to gain) importance through 1. an additional need from customers for timely information on the energy consumption. for energy saving 2. an additional need from energy suppliers to monitor the energy and water consumption in real-time. supervision of network and consumption 4

5 ch.1.1: AMR definition & motivation 3. an additional wish from energy suppliers and customers alike to control power consumption, as peak power supply costs additional resources, and thus money. 4. an additional wish from energy suppliers to make coordinated use of the many distributed power stations virtual power stations with combined heat and power units (CHP) solar, wind, etc. modules 5. an additional wish from utilities and customers alike to see additional services, e.g. prepayment, automated billing, reporting and outage control. 6. an additional drive from technological advances, as electronic meters are becoming more and more real. i.e. they finally start to hit the Ferraris meter cost-line. 5

6 ch.1.1: AMR definition & motivation AMR is a central part of modern home automation Dezentrales Energie- und Netzmanagement mit flexiblen Stromtarifen t (Local Energy and Network Management with flexible electricity tariffs) Innonet project (BMWi) Digital capturing of energy data Individual billing tariffs Customers should get detailed information about their energy consumption. 6

7 ch.1.2: AMR installations At the given moment, AMR systems can be found in the following varieties: For industrial customers, AMR systems are in use already for years and decades. mainly based on direct, modem based dial-in or dial-out connections. extremely expensive (in installation and running cost) non-satisfying reliability and availability barely scalable world-wide field-trials many of those installations show good technological advances, however, often suffer from limitations from physical or technological standardization. few large utilities that have installed AMR in large parts of the grid. Italian Enel Norway, Netherlands, Denmark, France and Spain 7

8 ch.1.3: AMR challenges cost efficiency installation and deployment scalability number of stations granularity of reading values metering vs. control standardization multi-party multi-utility internationalization future proof 8

9 ch.2.1: AMR architectures tertiary communication quaternary communication secondary communication Source: MUC-Projektgruppe, EMSYCON GmbH, Dr. M. Wisy primary communication 9

10 ch.2.2: AMR overall approaches one- vs. multi utility ownership of equipment / data points / data concentrators granularity of information load profile vs. integrated values proprietary (powerline) vs. IP electricity meter as central element? advantages always mains-powered physical connection to the network electric meter (ehz) already at reasonable cost level L3- vs. L7-gateway 10

11 ch.2.3: AMR communication primary communication wireless (RF) ZigBee M-Bus Funk proprietary indoor (low-speed) powerline tertiary communication i wireless (RF) ZigBee GPRS outdoor (low-speed) powerline DSL IP 11

12 ch.3.1: AMR IEC/EN IEC DLMS/COSEM Distribution Line Message Specification specification of application layer designed to support messaging g to and from (energy) distribution devices in a computer integrated environment COmpanion Specification for Energy Metering interface model of communicating ca energy e metering e equipment e physical metering equipment as a set of logical devices IEC PLC power line carrier spread spectrum frequency shift keying (SFSK), is widely used 12

13 ch.3.1: AMR IEC/EN EN : Communication system for meters and remote reading of meters describes M-Bus protocol contains: Part 1: Data exchange Part 2: Physical and link layer Part 3: Dedicated dapplication i layer Part 4: Wireless meter readout M-Bus Wireless physically compliant to KNX-RF 868MHz stationary transmit receive 13

14 ch.3.2: International (1) Echelon LonWorks CEA709.2 ENEL 27 mio of homes and buildings estimated cost of 2.1 bn closed solution Internet connectivity with ihil i.lon gateway Spain with practically identical technical approach 14

15 ch.3.2: International (2) ZigBee Alliance Metering profile Neigborhood Area Networking 15

16 ch.3.3: Germany s situation (1) requirements feedback time pressure first products should be out in 2009 start of rollouts in 2010 Source: A. Bolder, Smart Metering: der Zähler als Datenquelle in einem sich verändernden Markt ; energie wasser-praxis 12/2007 DVGW Jahresrevue, pp

17 ch.3.3: Germany s situation (2) primary communication decided for M-Bus Funk decided by MUC and OMC short-term solution for fast product development advantages: time synchronization (periodical wake-up) two-level communication (data concentrators) compatible M-Bus application protocol disadvantages relatively large overhead (device descriptors) no multi-hopping no automatic commissioning ID distribution, including security problems in multi-vendor environments device descriptors national solution (?) future proof (?) 17

18 4. stzedn developments: Wireless M-Bus stack stzedn has developed an own WiM-Bus communication and management stack TI MSP430 & CC1101 TI CC430 Mode Direction Description S1 Unidirectional Sending data several times per day Collector has to be awaked before the metering devices send their data. S1-m Unidirectional Similar to S1, but mobile collector supported Collector has to be always-on. S2 Bidirectional Bidirectional version of S1. T1 Unidirectional Sending data several times per second or minute. T2 Bidirectional Bidirectional version of T1. Different frequency settings and data encoding from metering device to data collector and reverse. R2 Bidirectional Width transmitting ranges. Usage of frequency multiplexing for metering devices not to interfere with each other. 18

19 4. stzedn developments: capt²web hardware hardware platform 32bit MCU MCF52235 Ethernet WLAN GPRS USB-on-the-Go generic interfaces to wireless modules 2*CC1101 Wireless M-Bus, KNX-RF for parallel monitoring of two RF channels 1*EnOcean proprietary 19

20 4. stzedn developments: tool support example: capt²web based Wireless M-Bus Sniffer packet mode Wireless M-Bus Configuration i Si Suite 20

21 ch.4: summary metering is an internationally emerging market large-scale M2M variety of approaches high complexity due to multi-step value chain national and regional markets take right decision for long-term strategy look kfor independant d partner 21

22 thank you for listening Dipl.-Ing. Dipl. Wirt.-Ing. Baden-Wuerttemberg Cooperative State t University it Steinbeis Innovation Center Embedded Design and Networking sikora@stzedn.de 22