Modernization of the Alperia distribution network.
The solution proposed and implemented by SELTA is based on the installation of STCE-RTU devices in the secondary substations of the distribution network managed by Alperia. One of the sites on the network, deemed suitable, was chosen as the central node from which to supervise and control the network. In this node, a SCADA eXpert DMS system was installed and it's capable of interfacing with the 17 primary substations, remotely controlled with Enel RTU devices, and the 2500 secondary substations. The eXpert database is an Oracle one and has been configured with the network substations data, besides being the repository where all the significant quantities are stored, whose historicization is foreseen for subsequent display by the operator in tables or graphs . With eXpert and STCE-RTU the network is remotely controlled in real time, it is possible to view the individual substations/ stations with zoom, to perform offline analysis of the network in standard and fault configuration. Among other functions we have alarm management, periodic storage of network status and operations (circuit breakers closing / opening, disconnectors), automatic search for broken trunk. The solution uses the following products:
- STCE-RTU is an integrated system for remote control, advanced monitoring of events and perturbations, and local automation of VHV / HV transmission electrical stations and HV / MV distribution substations. It is also available in a compact form (STCE-R).
- The solution is designed to preserve existing investments and includes both redundant hardware and supervision software. The central site provides a series of servers dedicated to the main functions including front-end, HMI/DMS, switch and satellite receiver.
- eXpert also performs SCADA simulator functions by replicating the actual DMS to study the data collected, validate and reconstruct events chronologically. eXpert also implements the operating automatons of the secondary substations.
- With the SELTA solution, the operator can perform offline network analysis even in a fault state to reconstruct the occurrence of specific events, understand them and plan specific actions.
As part of the project aimed to optimize and modernize the distribution network, Alperia, an utility operating in Alto Adige, wants to activate new intelligent services for network remote monitoring. Besides the most innovative functions of telecontrol and supervision, the goal is also to have suitable front-ends to interface existing systems and to have the possibility to store data and track events to make them analyzable at a later time. Alperia wants to strengthen the central point of management, minimizing the upgrade interventions in the peripheral sites, preserving the investments in place and optimizing rollout times.
SELTA deployed an RTU/SCADA solution in an overall plant made up of 17 primary stations, remote controlled with Enel equipment, and 2500 secondary substations for a total value of about 35,000 I/O. The SCADA eXpert DMS has been installed in addition to SELTA STCE-RTU system in the secondary stations. SCADA eXpert allows Alperia to remotely monitor the entire network in real time, view the topology with the possibility of zooming on specific stations/substations, perform off-line network analysis in standard and fault setting, and finally record data. eXpert also plays the role of SCADA simulator replicating the actual DMS to study collected data, validate and chronologically reconstruct events.
SELTA solution has introduced multiple advantages for the operator. First of all, it has modernized and made the management of the network and its own behavior more intelligent by using innovative protocols such as IEC61850. This has also led to advantages in terms of security and connectivity, thanks to the use of protocols such as IEC870.5.101/104 and Modbus RTU/IP. In addition, a Disaster Recovery Plan has been implemented ensuring high availability of the entire network that is combined with greater scalability, both as number and type of interfaceable systems and opportunities for systems’ hardware upgrade.