Common Grid Model

Energy data exchange – key to future market development

The IEC has adopted ENTSO-E’s Common Grid Model Exchange Specification as an international specification for electricity data exchange.
Published: Thu 07 Sep 2017

As we all know, data volumes are growing rapidly as the numbers of connected devices increase and making use of this data is key to the benefits to be derived from the emerging Internet of Things.

One part of the challenge is the analysis of the data by the collector or owner, whether this takes place internally in the enterprise or as a service in the cloud.

The other part of the challenge is the sharing of the data across different users so that further wider scale benefits can be derived from it.

European common grid model

Within the power sector, with the smart grid the concept of data aggregation and analytics involving multiple data sources has become well established.

But it also has wider application in the decentralised energy world, with growing levels of renewable generation and bidirectional energy flows and the added complexity these bring to the management of the distribution and transmission networks.

In Europe, several countries including Norway and Estonia are building central national data hubs. With the widespread rollout of smart metering more information than previously is becoming available on energy consumption patterns and consumer actions such as supplier switching can be expedited.

More broadly at a pan-European level, with the development of an internal energy market with cross border interconnections and trading, data sharing is key, both within and across the various sectors.

In support, and as a requirement under the network codes, the European transmission system operator (TSO) organisation ENTSO-E has been focusing on how to share and utilise data to support network management and planning through a Common Grid Model.

The aim of the model is to pool operational data with timeframes ranging from one year out to one hour before dispatch for sharing between the TSOs and regional security coordinators (RSCs) who are responsible for the system operational security.

“The model is a mathematical simulation model of the pan-European interconnected grid,” Wim Ivens, Systems Operations Advisor at ENTSO-E, explained in a recent interview with Engerati. “Any ENTSO-E process of a pan-European scale has a data dimension and that data needs to be processed for business purposes.”

Applications intended for the data include long and short-term capacity calculations, operational security analysis, outage planning and grid planning and adequacy forecasting.

The first version of the Operational Planning Data Environment (OPDE) platform on which the Common Grid Model and other future business processes will be supported, is being rolled out with the aim to be operational by the end of the year, Ivens said.

Initially its application is restricted to the TSOs and RSCs but in the future, it may be opened up to other market players such as the distribution system operators (DSOs).

Wim Ivens discusses ENTSO-E's Common Grid Model.View the full webinar

Power data exchange

Key to the operation of the OPDE platform, and in turn the implementation of the European network codes, is the data management process.

To this end a Common Grid Model Exchange Specification (CGMES) has been developed, to which all the data and the grid model applications must conform, in order to facilitate the data exchange and ensure interoperability between them.

In an interview with Engerati, Modesto Gabrieli Francescato, Senior Manager of Strategy and Market Analysis at Italian TSO Terna and convenor of ENTSO-E’s data model committee, said that the CGMES along with a conformity assessment process had been developed in partnership with the vendors.

Modesto Gabrieli Francescato talks about the new standard data exchange specification for Europe.

“There is a common ground between the TSOs and vendors so it was important to establish a common framework in setting up the models, which the vendors can follow,” he says.

Validation of the CGMES has come in the form of its adoption as an internationally recognised technical specification for electricity data exchange by the International Electrotechnical Commission (IEC).

“This is a recognition of European power networks’ ability to innovate,” says Laurent Schmitt, ENTSO-E’s Secretary General, in a statement. “The CGMES will facilitate information exchange among an increasing number of actors and notably with the DSOs.”

He adds that a lot of work is ongoing between ENTSO-E and EU associations of DSOs to make this seamless stream of data across power networks happen.

“The CGMES and the Common Grid Model in general are true springboards for the smartening of the European power system.”