Towards the modernisation of the supervisory control and data acquisition systems of the Hellenic electricity distribution network operator: considerations and steps forward

Currently, Hellenic Electricity Distribution Network Operator (HEDNO) undergoes an upgrade of its supervisory control and data acquisition systems. As part of this, the information and communication technology (ICT) infrastructure of the organisation will undergo a respective change towards data harmonisation and smooth interoperation between the heterogeneous ICT systems it consists of. This work presents the current state of the most important of HEDNO ICT systems, in an attempt to point out the diversity and complexity of the ICT infrastructure of such a large organisation, and, then, it proposes the implementation of the enterprise service bus approach as a means to achieve the desired integration, interoperability and data harmonisation between the various ICT systems of HEDNO.