Smart grids San Severino
|Name of the Hosting Project Partner:
Municipality of San Severino Marche / SVIM
|Contact person(s) for Study Visit (Name, e-mail):
Pier Pierandrei (City Councilor – Municipality of San Severino Marche), firstname.lastname@example.org
SHORT DESCRIPTION OF THE TOOL/MEASURE
|Name of the Measure:
Smart Grids Project – A.S.SE.M. S.p.A
|Type: (autonomous or part of an integrated action plan?)
Autonomous / Pilot Project
· Integrated energy
· Innovative financing solutions
|Managing Organisation (if not project partner, please provide name of the organization and website):
A.S.SE.M. S.p.A; Municipality of San Severino Marche
|Geographic Coverage (Country/Region):
Local – Municipality of San Severino Marche (Marche, Italy)
|Starting Date and Expected Ending of the tool or measure:
2011 – 2015
|Beneficiaries / Target Group:
– Local Authority (Municipality of San Severino Marche);
– Distribution System Operator (A.S.SE.M. S.p.A).
– 11 Active Users (10 MV Active Users and oneLV Active User, local companies)
|Rationale (starting point, challenge, objectives, initiator/s and stakeholders involved):
The A.S.SE.M. S.p.A. Smart Grids Project was submitted to the selection procedure established by Resolution ARG/elt 39/10 and approved on February 8, 2011 under Resolution ARG/elt 12/11. It is a Smart Grid designed to improve the standards of the electrical distribution grid. Its objective is to actively manage the grid using innovative technologies while minimizing costs.
The project included investments in both the Primary Station (PS) of the electricity provider A.S.SE.M. SpA in San Severino Marche (MC) and in the associated grid. It involved a number of Active Users (AU) to develop a Smart Grid prototype to facilitate optimal, efficient operation of the Distribution Grid (DG), and enable collaborative production using renewable energy.
The project’s objectives were as follows:
1. Create remote WG network tripping via signals, to prevent undesired events such as unintentionally isolated areas and improve service continuity (avoiding untimely short-outs of the GD);
2. Create logical selectivity between protectors in the PS and in the Distributor Satellite Center (Cabina Smistamento Contro) to improve service stability for users;
3. Create remote control for Secondary Stations (SS) using an always-on communication system, to improve service stability for users and grid management efficiency;
4. Create centralized voltage regulation that is performed by modulating the reactive power injections of each WG unit. Tension regulation allows increased productivity from renewable sources, improving tension quality and MT distribution grid efficiency.
5. Limit/modulate active power fed to the grid by each WG unit in emergencies, to reduce the impact of renewable sources on the electric system during critical high- and medium-voltage situations;
6. Monitor production of WG via signal exchange with Terna (Transmission System Operator – TSO). The WG monitoring system allows more efficient management of the electrical grid by the A.S.SE.M. team (i.e. to manage emergencies that require rearrangement of the grid). Moreover, the architecture permits data to be sent to Terna and allows remote energy production tripping under Annex A72, for improved conduction of the transmission network.
Pilot Project incentivized by the Italian Energy Authority (Autoritàper l’Energia Elettrica il Gas ed il Sistema Idrico, AEEG) in the framework of Resolution ARG/elt 39/10. In 2010, AEEG launched a selection process for Smart Grid demonstration projects, providing an innovative incentive scheme for SG experiments implemented on active MV networks
|Implementation Modality / Methodology:
Advanced control and communication systems exchange information with individual energy producers using renewable sources (Widespread Generation: WG) and integrate them into the distribution grid and, more widely, into the whole electric system.
|Internal organization of the implementation of the measure / Administrative Work-Flow:
|Performance Indicators (if applicable):
ICT technologies permit signal exchange between AU and a series of peripheral distributor sites, which allows integration with the grid and the entire electrical system. This new management system can thus overcome problems related to monitoring, control, protection, and automation (which normally occur in the traditional distribution grids), fostering the development of the WG and more efficient use of all resources involved. This in turn maintains high levels of the system’s security and reliability, as well as overall service quality.
Testing highlighted the fact that, in general, monitoring of the WG (and the load) can already be done today, without any unique technology developments and/or new regulations.
The Smart Grid functions which use modulation commands for active/reactive power do not present particular problems on the communication side (current TLC technologies fully meet requirements). However, devices installed for Active Users (AU) must be capable of receiving and processing transmitted commands (otherwise there is a risk of incurring prohibitive costs to retrofit). Additionally, existing rules must enable the DSO to issue commands to the user, clearly defining scenarios where the instrument can be used. Functions designed to ensure more efficient protection of the electrical grid (remote tripping and logical selection) had, as expected, higher requirements on the communication side.
The experimental system architecture will have a series of impacts on the distributor’s and the producer’s activities. The distributor’s processes will be simplified by the availability of real-time information and by the opportunity to limit or temporarily detach generation facilities to allow continuity for users of the entire network.
The distributor’s user continuity indexes will benefit from logical protector selection and advanced remote SS control. Likewise, centralized voltage regulation will improve quality on the distribution grid both for medium- and low-voltage, while also increasing hosting capacity (capacity of the distribution grid to accept more production from renewable energy sources). And through remote control of active power injections, AU will be enabled to enjoy additional services.
|Strong features of the tool/measure:
The project improved understanding of the legislative framework’s evolution, especially for employees involved with the experimental activities. Moreover, A.S.SE.M. initiated round table discussions related to the new functionalities. These provided an opportunity to share reasoning behind recent important regulatory changes with all participants, the strong impact being on third parties and in particular AU. To that end, the project has certainly yielded a better understanding of recent best practices in the field.
Weak features and criticalities of the tool/measure:
Field testing highlighted the need for A.S.SE.M. S.p.A. to anticipate and improve the professional competencies/skills necessary to manage ICT technologies.
|From the starting, did you apply any change in design and implementation? Any corrective action?
[Implementation issues] – The main problems encountered during the implementation of the project are due to:- Different installation configurations and varying AU equipment;
– The necessity of retrofitting certain AU components to support expected functionality;
– The experimental nature of the project, with the consequent need to develop ad hoc technological solutions;
– An uncertain normative and legal scenario (after the experimental phase), which created initial reluctance in investors, who did not perceive future benefits;
– Evolution of the normative and technical framework (CEI 0-16, CEI 0-21, Annexes A70 and A72 to the Terna Code, Del. 84/12/R/eel, Del.421/14/R/eel), which forced changes to the original solutions and designs to accommodate unforeseen variations.
|What are the lessons learned for your region? For other regions? What would be conditions for potential transfer? N/A|
|What are the next steps/follow up actions? N/A|
More information is available at the following link: http://www.autorita.energia.it/it/operatori/smartgrid.htm