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Report

Teaser, summary, work performed and final results

Periodic Reporting for period 2 - TILOS (Technology Innovation for the Local Scale, Optimum Integration of Battery Energy Storage)

Teaser

Summary

\"Introduction
TILOS aims to demonstrate the optimal integration of local scale energy storage in a fully-operated, smart microgrid (Fig. 1) on Tilos island, currently supplied with oil-based generated electricity via an undersea cable from Kos island. This allows for the investigation of the interplay between an interconnector and storage, and of energy trade between a smart microgrid (Tilos) and a macrogrid (Kos).

Problem of Interest and Challenges
According to the Amsterdam Treaty, declaration No. 30, \"\"â€¦insular regions suffer from structural handicaps linked to their island status, the permanence of which impairs their economic and social development\"\". In this context, it is important to note that even today many of the European islands suffer from the so called insularity. To this end, one of the ground-breaking objectives of TILOS project is to address energy supply problems of island regions, through the implementation of optimally integrated, local scale, RES-based energy storage systems that can also confront collaboration with grid interconnectors.

Objectives
Specific objectives of TILOS include the following:
o To deliver a prototype battery storage system that can efficiently support stand-alone and grid-connected operation of a microgrid.
o To value the multiple services provided by local scale battery storage, considering also social benefits produced.
o To build novel business models for local scale battery storage, considering also the option of private-public partnerships and the active engagement of consumers at the community level.
o To illustrate the complementary character and optimal interplay between local scale energy storage and grid interconnectors to achieve efficient exploitation of RES power generation.
o To demonstrate the ability to integrate DSM for electricity storage in the required product (e.g. DHW storage).
o To demonstrate the real-life operation of a smart microgrid comprising centralized RES and battery storage, distributed, electricity grid heat storage, smart metering and DSM, RES production and demand forecasting, centralized operation and remote control through SCADA.
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Work performed

The most significant technical accomplishments of TILOS are the development of the integrated prototype battery-inverter energy storage system (Fig. 2) and of the prototype smart-meter & DSM panel. Meanwhile, all battery modules of FZSonick have been produced and delivered to Eunice (Fig. 3), together with the corresponding containers and the two battery inverters of IDT, with their shipment and installation to Tilos planned for the end of September 2017. On the other hand, rolling-out of the smart meter & DSM devices in the residential sector of Tilos has been ongoing (Fig. 4), with the total number of installed devices so far reaching ~75 out of 150.

Furthermore, the installation of RES units was accomplished in June 2017 (Fig. 5). At the same time, the rest of permits, including the Connection Contract were also issued. This means that TILOS has now reached the final milestone which is the PPA, issuance of which will also signal grid-connection and trial operation for the TILOS system.

In addition, the first stage of SCADA commissioning took place in September 2016 (Fig. 6), when a fully-equipped SCADA control room was installed onsite, establishing communication with the existing measuring equipment. The second phase of SCADA commissioning is planned for autumn-winter 2017, the aim being to interface the rest of main field units.

To reach the point of operation for the integrated TILOS system, other parallel work streams have also progressed considerably, the most important being the development of a forecasting platform (Fig. 7) where all 27 developed models can be automatically executed and optimally ensembled to feed the operation of the EMS . Of equal importance is also the development of the project simulators under WP7, i.e. the Microgrid Simulator and the Extended Microgrid Simulator (Fig. 8).

Furthermore, following the series of seminars under WP8 (Fig. 9), the dissemination campaign and win of awards in the EUSEW also paid off in terms of local population engagement. In the meantime, together with the installation of RES units, the renovation of the info-kiosk building was completed, signaling its operation from summer 2017 (Fig. 10).

Moreover, WP9, WP10 and WP11, all starting in the last semester of the second reporting period, have recorded appreciable progress. Overall, it is believed that despite of delays and small deviations faced, all main work streams showed satisfactory progress. In this context, for those tasks associating with the demonstration phase and requiring extra time for their completion, the plan is to accelerate progress and ensure that results obtained will enable the beginning of the former in February 2018.

Final results

\"TILOS project addresses different innovation aspects and goes beyond the state of the art. To this end, significant progress was achieved with regards to the development of two prototypes, i.e. the integrated battery-inverter system and the smart meter & DSM device. Furthermore, according to the simulation studies, TILOS system is expected to achieve high RES shares, in the order of 70% for the entire Tilos, which is enabled from the prototype battery storage system and is beyond the state of art.

This is in line with the goal to develop a multifunctional, local-scale battery system with value-adding attributes and builds upon the development of the battery system prototype mentioned earlier.

In parallel, the conduction of 5 training seminars for the local population together with the double win of EUSEW 2017 awards, the physical implementation of the project and the operation of the info-kiosk, has gradually achieved high levels of local engagement. This effort is largely assisted by the ongoing roll-out of smart meter & DSM panels, turning the local electricity consumers into active contributors. Adoption of this interactive process with the local population of Tilos introduces societal implications and challenges the norms of communication with consumers, while contributing also to the design of preliminary DSM strategies.

This is in line with the goal to evolve microgrid-level DSM by bringing innovation both from the DSM device and the DSM strategies point of view.

Next, issuance of the first ever production and installation license for a battery-based hybrid power station in Greece disrupted the local energy market and challenged the regulatory framework in force by introducing the special technological characteristics of battery storage, paving also the way for the commercial exploitation and replication of the TILOS system. Meanwhile, it should be mentioned that the Greek islands alone already represent a market potential of ~1GW of fuel generators to be replaced on the basis of TILOS system, something that was also identified from the EUSEW 2017 jury of experts, giving to TILOS the Award of \"\"Energy Islands\"\" and recognizing the project solution as the blueprint for the clean energy development of island regions.

This is in line with the project goal to develop an integrated system offer and with the aim to overcome the subsidy barrier, i.e. the subsidy scheme applying to all non-interconnected European islands in order to cover the expensive production costs of oil-based power generation, which reflects upon the socio-economic impact of the project.
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