The centerpiece of the intelligent metering system!

The smart meter gateway is an important part of the digitalization of the energy transition and is used in addition to the digital electricity meter. Meter data is received, stored, and prepared here for market participants (grid operators, electricity suppliers, and consumers). This enables intelligent control of electricity grids in the future.

Smart Meter Gateway (SMGW) – the interface for a smart power grid

Smart meter gateways make a crucial contribution to advancing the energy transition. With the help of secure digital networking, the fluctuating supply of renewable energy and generation across the entire power grid are optimally coordinated.

Use of EEBUS for an SMGW

There are various setups at the grid connection point, such as SMGW+, control boxes and CLS gateways. However, they all pursue the overarching goals of grid compatibility, flexibility and optimization of self-generated electricity. EEBUS, as the language towards household appliances, defined as a standard by the VDE after years of successful practical experience, offers simple commissioning and secure communication.

Providers of all devices in the home use digital connections, which KEO – based on the EEBUS standard – provides individually for the respective devices.

Use cases that go beyond this, such as the use of dynamic tariffs or self-consumption optimization, are also available for the SMGW application field from KEO.

Implementation of use cases in EEBUS:

Grid compatibility (§14a EnWG / §9 EEG)

  • Limitation of Power Consumption (LPC). A short-term power limitation is transmitted to an EMS or individual end devices. LPC also includes a failsafe functionality in case of a connection loss.
  • Limitation of Power Production (LPP). A short-term power limitation is transmitted to an EMS or individual end devices. LPP is relevant for producing devices according to §9 EEG, such as PV systems, batteries, or bidirectional wallboxes.
  • Monitoring of Power Consumption (MPC). End devices transmit consumption, from current power to phase-specific values.

Dynamic tariffs.

  • Time of Use Tariff (TOUT). Electricity tariffs are transmitted to an EMS. These tariffs serve as the basis for the EMS to optimize energy consumption. For the grid operator, flexible tariffs offer the opportunity to shift grid load without restricting the end user.

Flexibility Provision

A household can make the flexibility of its consumption units available to the grid operators. There are also suitable EEBUS use cases for this.

  • Power Demand Forecast (PODF). An EMS provides a consumption forecast, which is forwarded to the grid operator via the SMGW.
  • Power Envelope (POEN). Minimum and maximum consumption values are communicated to the EMS as guidelines.

Self-consumption optimization

  • Monitoring of Grid Connection Point (MGCP). To optimize self-consumption through the EMS, current consumption values of the entire household are required. The measurement data is communicated via MGCP.

The technical product solution used here: the KEO Edge solution.