Data Source: Smart Gateways (International)

Data Sources / MQTT-based

Overview

The Smart Gateways adapter is a MQTT-based data source which is fully compatible with DSMR P1 smart meters. It is made by Smart Gateways and supports the following countries:

• Netherlands
• Belgium
• Sweden
• Denmark
• Finland
• Hungary
• Lithuania
• Switzerland

Integration with AIIDA

Data Source Configuration

Place the adapter on the smart meter and connect the power source if needed. The adapter will create a Wi-Fi network with the name Smart Gateways P1 READER for setup. Connect to this network with the password 12345678. Follow the instructions to connect the adapter to your home Wi-Fi network. Once connected, the adapter will reboot.

You need to know the IP address of the adapter to connect to it. You can find the IP with tools such as:

• Wifiman (App)
• nmap (command line tool)
• Router interface

The web interface for the adapter can be accessed by entering this url http://<IP-ADDRESS>:82 in your browser. The default username is admin and the default password is smartgateways. Keep the web interface open, as you will need it later.

Setup in AIIDA

To add a new Smart Gateways Adapter (SGA) data source in AIIDA, navigate to the "Data Sources" section and click on "Add Data Source". Ensure you select the data source type Smart Gateways Adapter.

Make sure you copy the generated MQTT password, as it will not be shown again, and you need it in the Adapter interface.

An example configuration is shown below.

Connect with AIIDA

Now head back to the adapter web interface. Navigate to the MQTT settings page. In this page you need to enter the provided MQTT settings from the AIIDA data source configuration.

MQTT server (host or ip): host or ip of the AIIDA broker
MQTT port: 1884
MQTT username: 3c219e10-33ef-45ba-8b8c-a2a2ee5224d7
MQTT password: xfeAHruBB4
MQTT prefix: aiida/3c21

Now click on "Submit new values" to save the configuration. The adapter will reboot and connect to the AIIDA broker. To verify the connection, navigate to the "Status" page. The "MQTT Status" should show "Connected".

Receiving Data in AIIDA

The SGA sends data in various fields. Below the received fields can be found. Each field is mapped to a specific OBIS code where possible.

Identifier	Unit of Measurement	OBIS Code	Description
electricityEquipmentId	None	currently not mapped	Electricity meter equipment identifier
gasEquipmentId	None	currently not mapped	Gas meter equipment identifier
electricityTariff	None	currently not mapped	Currently active electricity tariff indicator
electricityDeliveredTariff1	kWh	POSITIVE_ACTIVE_ENERGY - 1-0:1.8.0	Total energy delivered (Tariff 1)
electricityReturnedTariff1	kWh	NEGATIVE_ACTIVE_ENERGY - 1-0:2.8.0	Total energy returned (Tariff 1)
electricityDeliveredTariff2	kWh	POSITIVE_ACTIVE_ENERGY - 1-0:1.8.0	Total energy delivered (Tariff 2)
electricityReturnedTariff2	kWh	NEGATIVE_ACTIVE_ENERGY - 1-0:2.8.0	Total energy returned (Tariff 2)
reactiveEnergyDeliveredTariff1	kW	POSITIVE_REACTIVE_INSTANTANEOUS_POWER - 1-0:3.7.0	Reactive energy delivered (Tariff 1)
reactiveEnergyReturnedTariff1	kW	NEGATIVE_REACTIVE_INSTANTANEOUS_POWER - 1-0:4.7.0	Reactive energy returned (Tariff 1)
reactiveEnergyDeliveredTariff2	kW	POSITIVE_REACTIVE_INSTANTANEOUS_POWER - 1-0:3.7.0	Reactive energy delivered (Tariff 2)
reactiveEnergyReturnedTariff2	kW	NEGATIVE_REACTIVE_INSTANTANEOUS_POWER - 1-0:4.7.0	Reactive energy returned (Tariff 2)
powerCurrentlyDelivered	kW	POSITIVE_ACTIVE_INSTANTANEOUS_POWER - 1-0:1.7.0	Current active power delivered to the grid
powerCurrentlyReturned	kW	NEGATIVE_ACTIVE_INSTANTANEOUS_POWER - 1-0:2.7.0	Current active power returned from the grid
phaseCurrentlyDeliveredL1	kWh	currently not mapped	Energy delivered on phase L1
phaseCurrentlyDeliveredL2	kWh	currently not mapped	Energy delivered on phase L2
phaseCurrentlyDeliveredL3	kWh	currently not mapped	Energy delivered on phase L3
phaseCurrentlyReturnedL1	kWh	currently not mapped	Energy returned on phase L1
phaseCurrentlyReturnedL2	kWh	currently not mapped	Energy returned on phase L2
phaseCurrentlyReturnedL3	kWh	currently not mapped	Energy returned on phase L3
phaseVoltageL1	Volt	currently not mapped	Instantaneous voltage on phase L1
phaseVoltageL2	Volt	currently not mapped	Instantaneous voltage on phase L2
phaseVoltageL3	Volt	currently not mapped	Instantaneous voltage on phase L3
phasePowerCurrentL1	Ampere	currently not mapped	Instantaneous current on phase L1
phasePowerCurrentL2	Ampere	currently not mapped	Instantaneous current on phase L2
phasePowerCurrentL3	Ampere	currently not mapped	Instantaneous current on phase L3

Additional things to consider

Tariff 1 and Tariff 2

Most DSMR-compatible smart meters distinguish between two electricity tariffs, which represent different time periods of consumption:

• Tariff 1 (T1) – also known as the low tariff or off-peak tariff.
  It applies during night hours or weekends, when electricity demand is lower.

• Tariff 2 (T2) – also known as the high tariff or peak tariff.
  It applies during daytime hours, when electricity demand is higher.

The exact switching times between T1 and T2 depend on the country and the configuration of the energy provider.

Within the received data, the currently active tariff is indicated by the field electricityTariff. E.g. if electricityTariff is 0001, then Tariff 1 is currently active. 0002 indicates that Tariff 2 is active. This is needed to correctly interpret the delivered and returned energy values.

MQTT Topic Structure

The SGA sends data every few seconds. Each data field is sent to its own internal MQTT topic. Therefore, each data field is mapped to a specific MQTT topic. The base topic is aiida/xxxx/dsmr/reading, followed by an identifier for each field.xxxx is a 4 character long random generated sequence when creating the SGA data-source. One data point which includes 24 values (all data fields) are sent to 24 individual topics.

The topics have the following structure (few examples):

electricityDeliveredTariff1: aiida/xxxx/dsmr/reading/electricity_delivered_1
electricityReturnedTariff1: aiida/xxxx/dsmr/reading/electricity_returned_1
phaseVoltageL1 : aiida/xxxx/dsmr/reading/phase_voltage_l1

Therefore, our internal Smart Gateways Adapter subscribes to the wildcard topic aiida/xxxx/dsmr/reading/+, in order to get the values for each data field. It buffers the values until all 24 values are received. If the buffer is complete, a new AiidaRecord is created in AIIDA. If the buffer is not complete after 15 seconds, the buffer is still processed with the containing values.

Sources

• Smart Gateways Adapter Documentation