This document discusses smart metering systems for microgrids. It describes the smart metering system used in the Aalborg University Intelligent Microgrid Laboratory, which collects data from consumers and distributed energy resources through smart meters and transmits it through both local area networks and the internet. It also discusses a Sino-Danish project that will demonstrate a 200 kW hybrid renewable microgrid in Shanghai using Kamstrup's smart metering and data management platform. Future work will focus on implementing this system at the demonstration site and further developing its capabilities for functions like demand response and integration with microgrid energy management systems.

1. Smart Metering System for Microgrids
Mehdi Savaghebi, Yajuan Guan, and Josep M. Guerrero
Dept. Energy Technology, Aalborg University, Denmark

2. Outline
 Introduction
 Smart Metering System in AAU Intelligent MG Lab
 EUDP Sino-Danish Project
 Future Works
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3. 3
Introduction
Advanced Metering Infrastructure (AMI) consists of smart meters, data storage and management
and communication systems.
 AMI collects information from the end users and measures the energy consumption of the
consumers as well as the generating power of the distributed generation system.
SM provides information and/or alarms about consumption, events, power quality, tampering, etc.
Conventional
Electrical Meter
Collect Data
manually
Customer Manual Billing
Smart Meter
Communication
Interface/protocol
Customer Gateway Communication
Interface/protocol
Datebase and
Management
system
Metering architectures comparison of a conventional electrical meter and a smart meter

4. 4
Smart Metering System in AAU
Intelligent MG Labs
Ethernet
Communication
DC Power Line
AC Power Line
The laboratory is
based on 6 workstations
• 4 DC-AC converters,
• LCL-filters,
• ABB Motorized change-over switches
• Two Kamstrup Smart-meters.
 Configuration

5. 6
 Communication
Smart Meters
 Collect data from the
end consumers
 Transmit data through
LAN
Data
Concentrator
 Receive the data
 Transmit the data
Utility Central
(MDM)
 Process the data
received through Wide
Area Network (WAN)
2-way
2-way
Smart Metering System in AAU
Intelligent MG Labs

6. 7
 Smart meter collects the measurement data from the consumer and then transmit
the data optically from the meter to a local computer which works as a data
collector.
 Point-to-point communication.
 Communication - Optical Head
Smart Metering System in AAU
Intelligent MG Labs
Reading events logReading meter data
METERTOOL
METERTOOL

7. 8
 The data collected by smart meter can be transmitted from the meter to the utility
central collection point by internet lines (TCP/IP).
 Smart meter is able to communicate with an IP module connected via a LAN cable
or with GPRS.
 Communication – Internet based on TCP/IP
• Two extra IP modules (IP101i),
• A switch/ a router,
• A Zigbee plug-in module,
• An In-home display system.
Smart Metering System in AAU
Intelligent MG Labs
Energy Profile
kWhkW
Time
Load Profile
METERTOOL

8. 9
 Radio Mesh, Power Line Carrier (PLC), Zigbee, 3G, GPRS, etc.
 Other Communication Methods
 Potential Benefits
 From the consumer’s perspective
• Estimate bills from the collected information and thus manage their energy
consumptions to reduce their electric bills using in-home display .
 From the utility’s perspective
• Realize real-time pricing, by which the companies can limit the maximum
electricity consumption and tries to encourage users to reduce their demands
in the periods of peak load.
• System operator can terminate or re-connect electricity supply to any customer
with proper mechanism remotely in order to optimize the power flow or ensure
power quality according to the information sent from the demand sides.
Smart Metering System in AAU
Intelligent MG Labs

9. 10
EUDP Sino-Danish Project
 Granted by EUDP (Energiteknologisk Udvikling og Demonstration) and
the Ministry of Science and Technology of the People’s Republic of China.
 Be Carried out by Aalborg University and Tsinghua University (China), in cooperation
with Kamstrup A/S and the Shanghai Solar Energy Science & Technology Co. Ltd.
 A 200 kW hybrid PV-wind-battery microgrid site will be built and tested in Shanghai.
 Research and small-scale demonstration will be in AAU Microgrid Lab
Hybrid PV-wind turbine-battery Microgrid
Rooftop Building PV system2*10kW Wind Turbine
meter.et.aau.dk

10. 11
 Kamstrup Omnia Description
Future Works
OMNIA Suite
 An all-comprising smart
grid platform
 Formed based on AMI
concept
 Including smart meters,
network communication,
meter data management
and smart grid features

11. 12
Omnia System in AAU MG Labs
Future Works
EMS & DMS
Components
• OMNIPOWER-smart meters
• OMNICON-data concentrator
• UtiliDriver -integrating the SM
and the data management
system
• VisionAir- data management
and storage
• EMS developed by AAU MG
group
• In-house display system
Functionalities
• Voltage quality profiles
• Detection of THD
• Load control outputs for
demand-side programs and
load shedding on-demand
• EMS

12. 13
Future Works
DSO 1.42 rmb/kWh
1.00 rmb/kWh
PCC
Main grid
 Sino-Danish Project demonstration based on Kamstrup Omnia
Auto-consumption

13. mes@et.aau.dk
ygu@et.aau.dk
joz@et.aau.dk
For cooperation or further information,
please contact us:
www.microgrids.et.aau.dk
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