Green flexibility for network resilience
The city of Xanthi is the capital of Xanthi prefecture, which is in the northern part of Greece. The city of Xanthi has a population of 63,083 (according to 2011 inventory). The area experiences harsh winters and extreme weather events, mainly including snowfall and strong rain storms.
In terms of its distribution network, the area is being supplied by the HV-MV substations of Xanthi and Magiko (200 MVA in total), while part of its loads is being served by the substations of Iasmos and Zarkadia. The length of the overhead MV and LV network is 1,302 km and 1,330 km respectively. The MV underground network has length of 42 km, while the LV underground network has a total length of 115 km, most of which can be found within the city of Xanthi. There are more than 1,900 MV/LV distribution substations with total capacity exceeding 244,000 kVA.
For the pilot site of Xanthi, two local partners shall cooperate involving their assets for the implementation of the developed tools: HEDNO S.A., as the network operator, and Systems Sunlight S.A., with the microgrid installed in their facilities. For the scope of the pilot, a part of the distribution network of Xanthi will be involved with certain MV lines, selected according to specific criteria providing a representative part of the network capable to clearly demonstrate the tools operation and effectiveness of the proposed solutions.
PILOT SITE INFRASTRUCTURE
- PV Under 10kW (roof)
- PV (field) on MV and LV level (total installed power 4 MWp)
- Distribution network assets (3 MV lines from 2 HV/MV substations with 211 MV/LV substations)
- RES-powered microgrid of Sunlight S.A (AC loads, PV generation, small wind turbine, Lead-acid batteries, diesel generator, Polymer Electrolyte Membrane (PEM) electrolyser, PEM fuel cell, SCADA)
X-FLEX PILOT SITE
SERVIFLEX tool and GRIDFLEX tool will be demonstrated at Xanthi and the main users will be Sunlight and HEDNO, respectively. The goals are: to facilitate the optimal operation of Power2Gas and storage devices at the microgrid, to contribute to the increased resilience of the system under extreme weather events, to achieve power losses reduction and to increase voltage stability through RES scheduling and smart grid automation devices deployment in the field.