1. Energy Efficiency by Smart Home Version 1.0.0 English / June 2016

2. Energy Efficiency by Smart Home “a prototype of a smart home process control system to increase the consumption of self-produced photovoltaic energy”

3. Motivation What you have to pay for electric energy what you get by selling self produced electric energy Due to the increasing popularity of small energy- producing plants (mainly photovoltaic systems) the allowances for energy fed into the public electricity grid decreases. The income from this kind of electricity is lower than the price of purchased electricity. is higher than

4. Goal The goal was to build an automated control system, which enforces power consumption when there is enough self-produced electricity available. It was accomplished by intelligent heating of a hot water boiler with electrical energy. This reduces the costs for heating the boiler with expensive gas. By increasing the self-consumption of energy, the profitability of a photovoltaic system can be improved.

5. Approach and Method Energy store Energy store E heater Command Gas heater WinCC OA Data Acquisition Expensive Energy (Gas) WinCC OA Control Power-Meter Photovoltaics Power-Meter Consumption Expensive energyCheap & green energy Powerswitch

6. Win CC OA Operator Oracle APEX InfluxDB & Grafana Power Meter Temperature Meter PV Converter Power Switch Physical architecture

7. System architecture Win CC OA Oracle APEX Raspberry Pi Arduino Hyper-V PV Converter Power Meter Power Switches Temperature Meters

8. Operation and monitoring with WinCC OA OPERATOR HomeAlertsValues Trend

9. Monitoring with InfluxDB and Grafana

10. Monitoring with Elasticsearch

11. Saving money Save money by consuming self produced energy! The income of selling self produced energy is lower than the price of purchased electricity. Automated e-heating process initiated by WinCC OA

12. IoT with WinCC OA Temperature Test-Button Alert-LED Mqtt Cloud Service ULC UX Client OA App Grafana WinCC OA Cloud Server 1.Button is forwarded to OA Cloud Server 2.State on OA Cloud Server generates an alert 3.Alert is sent to Rasp and turns on a LED 4.Acknowledge of Alert turns off LED 1.Ack on ULC UX 2.Ack on OA Operator App Raspberry CPS Device WinCC OA Server Average calculation of temperature with WinCC OA standard dp-function Motion Detector Power Meter … Power Switch

13. Used technologies WinCC Open Architecture Cheap IO by Raspberry PI Cheap IO by Arduino System orchestration with OA Analytics (OA trends) Calculations (OA std. functions) Controlling (OA control) SQL & NoSQL Databases Data logging (relational DB) Data analytics (analytical SQL) Oracle APEX Web Solution (Rapid Development) InfluxDB & Grafana Elasticsearch & Kibana Microsoft Hyper-V Energy saving CPU ~ 60Watt Low costs for hardware Flexible & Elastic Multiple virtual machines Loosely coupled components

14. Energy Efficiency by Smart Home Contact page ETM professional control GmbH – A Siemens Company Andreas Vogler Consulting Marktstrasse 3 7000 Eisenstadt AUSTRIA Phone: +43 (2682) 741 - 0 E-mail: andreas.vogler@etm.at siemens.com